Abstract

The present disclosure provides a method for preparing a catalyst for pyrolysis of waste plastics to produce oil, comprising: washing and modifying coal gangue powder with acid, and then placing in an alkaline solution, etching under magnetic stirring for 20-30 minutes, and washing with water until neutral; placing the catalyst washed until neutral in a metal solution, loading the metal by impregnation, and then filtering and washing; then placing the catalyst in the molding machine and adding adhesive and water, to compress into a suitable shape, drying, and finally calcinating to activate to obtain a product. The present disclosure not only solves the problem of waste plastic pollution, but also obtains fuel oil with high valuable products while reducing the cost of waste plastic treatment, and also improves the yield of fuel oil.

IPC Classes  ?

• B01J 37/02 - Impregnation, coating or precipitation
• B01J 21/18 - Carbon
• B01J 23/06 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of zinc, cadmium or mercury
• B01J 23/28 - Molybdenum
• B01J 23/34 - Manganese
• B01J 23/75 - Cobalt
• B01J 23/755 - Nickel
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• B01J 37/06 - Washing
• B01J 37/08 - Heat treatment
• B01J 37/34 - Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 57/12 - Applying additives during coking
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste

Abstract

An assessment and control method, system and device for time-energy efficiency of CNC machine tools. The method comprises: comprehensively analyzing the influence of factors of the startup rate and extra startup frequency of a CNC machine tool on the energy efficiency of the CNC machine tool, and constructing a mathematical model of the time-energy efficiency of the CNC machine tool and the startup rate and extra startup frequency of the CNC machine tool. The time-energy efficiency of the CNC machine tool is monitored to realize the overlimit warning function for the time-energy efficiency of the CNC machine tool to finally control the time-energy efficiency of the CNC machine tool within a target range. The present invention analyzes the influence of the downtime loss of the CNC machine tool on the energy efficiency of the CNC machine tool, and can realize overlimit warning for time-energy efficiency of the CNC machine tool.

IPC Classes  ?

• G05B 19/4155 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme

Abstract

An automatic support device for resisting rock burst in mines is provided, which includes bases symmetrically distributed, sliding frames are slidably connected to the bases, hydraulic rods are fixedly connected to the bases, and telescopic ends of the hydraulic rods are fixedly connected to the adjacent sliding frames. The sliding frames are fixedly connected to brackets, and the brackets symmetrically distributed are provided with a main support plate, on which pushing rods are provided. The device can slow down the impact force of the device when rock burst occurs in the mine, at the same time, it plays a supporting role in the mine, ensuring the stability of the roof of the mine.

IPC Classes  ?

• E21D 15/44 - Hydraulic, pneumatic, or hydraulic-pneumatic props

Abstract

Disclosed is a microscopic comparison and experimental verification method for the wettability of similar surfactants on coal dust, comprising: collecting a coal sample on site from a mining area and analyzing the coal sample by infrared spectroscopy and nuclear magnetic resonance spectroscopy to obtain information on functional groups and carbon structure of coal molecules; S2: constructing a surfactant-coal molecule electrostatic interaction model and analyzing an orbital energy difference and an electrostatic potential difference between surfactant molecules and coal molecules, etc. S6. The invention provides a simple and effective idea for the selection of surfactants.

IPC Classes  ?

• G16C 20/30 - Prediction of properties of chemical compounds, compositions or mixtures
• G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solidsPreparation of samples therefor
• G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
• G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions

Abstract

A microscopic comparison and experimental verification method for the wettability of similar surfactants to coal dust, comprising the following steps: S1, collecting an on-site coal sample from a mining area, crushing into powder, and then performing infrared spectrographic analysis and nuclear magnetic resonance spectrographic analysis to obtain information of functional groups and carbon structures of coal molecules; S2, constructing a surfactant-coal electrostatic interaction model, and analyzing an orbital energy difference and an electrostatic potential difference between surfactant molecules and the coal molecules; S3, analyzing the strength and energy of hydrogen bonds between surfactants and water molecules, wherein the strength is determined by bond angles and bond lengths of the hydrogen bonds; S4, constructing a surfactant-coal-water molecule periodic solution model, and performing geometric optimization on the surfactant-coal-water molecule periodic solution model, so that the surfactant-coal-water molecule periodic solution model reaches a stable configuration; S5, performing NPT simulation and NVT simulation on the periodic solution model; and S6, performing experimental verification, so that the problems of long experimental time and high cost and the like of current selection of surfactants can be effectively solved, and a simple and effective thought is provided for the selection of surfactants.

IPC Classes  ?

• G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
• G16C 10/00 - Computational theoretical chemistry, i.e. ICT specially adapted for theoretical aspects of quantum chemistry, molecular mechanics, molecular dynamics or the like
• G06T 17/00 - 3D modelling for computer graphics
• G06F 30/10 - Geometric CAD
• G06F 30/20 - Design optimisation, verification or simulation

Abstract

A remote-sensing yield estimation method is described that is applicable to a crop whole growth period and belongs to the field of data processing methods and photogrammetry technologies with prediction purpose. In the present disclosure, in combination with agricultural knowledge of crop yields and multi-source remote-sensing data, with the biomass estimation model of whole growth period, the biomass contribution rate curve and the crop harvest index as basis, a crop yield estimation model of whole growth period with stable spatiotemporal extensibility is constructed. The yield estimation model uses the relative accumulated temperature and the remote-sensing vegetation index as variable inputs. Further, based on genetic algorithm, the parameters of the model are optimized in a case of failing to directly construct the model with data fitting due to less sample points, so as to help solve the problems of poor spatiotemporal mobility of the yield estimation model.

IPC Classes  ?

• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06N 3/126 - Evolutionary algorithms, e.g. genetic algorithms or genetic programming
• G06Q 50/02 - AgricultureFishingForestryMining

Abstract

A multifunctional teaching demonstration device for economic management is provided. It includes a folding device the back of the folding device is provided with multiple folding components, the front of the folding device is provided with a display, the front of the display is flexibly connected to a transparent board, the left side of the display is flexibly connected to the first demonstration module, the right side of the display is flexibly connected to the second demonstration module, there are two first teaching aid cabinets under the first demonstration module and the second demonstration module, the bottom of the first teaching aid cabinets is flexibly connected to the second teaching aid cabinet.

IPC Classes  ?

• G09B 19/18 - Book-keeping or economics

Abstract

A mine cooling and dehumidifying system includes a compressor, a gas-liquid separator, an evaporator, a condenser and an expansion valve. The evaporator is in an air supply well, and the condenser is in a return air well; the compressor, the gas-liquid separator and the expansion valve are all between the air supply well and the return air well; an inlet of the compressor is connected to a refrigerant outlet of the evaporator through the gas-liquid separator, and a refrigerant inlet of the evaporator is connected with an outlet of the expansion valve; an inlet of the expansion valve is connected with a refrigerant outlet of the condenser, and a refrigerant inlet of the condenser is connected with an outlet of the compressor. In the present disclosure, by vapor compression type refrigeration cycle, the downhole air heat is transferred to the return air and then discharged to the ground.

IPC Classes  ?

• E21F 3/00 - Cooling or drying of air
• E21F 1/00 - Ventilation of mines or tunnelsDistribution of ventilating currents

Abstract

Disclosed are a capillary force-based horizontal dual-layer semiconductor field effect transistor and a preparation method. The transistor comprises a substrate (1), a dielectric layer (2), a semiconductor layer (3) and a metal electrode (4), in sequence from bottom to top, the semiconductor layer (3) being a semiconductor having a horizontal dual-layer structure. The preparation method comprises: preparing a multi-channel mold having multiple first micro-channels (5) and second micro-channels (6), the left end of each first micro-channel (5) being an open end and the right end thereof being a closed end, the left end of each second micro-channel (6) being a closed end and the right end thereof being an open end, and the first micro-channels (5) and the second micro-channels (6) being disposed at intervals; and dripping a N-type semiconductor solution (7) and a P-type semiconductor solution (8) on the left side and the right side of the mold, respectively. A dual-layer semiconductor having a horizontal structure can be prepared under the action of capillary force without requiring an additional mask plate.

IPC Classes  ?

• H01L 21/331 - Transistors
• H01L 29/739 - Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field effect

Abstract

A multi-stage driven escalator with a self-healing function and an adaptive synchronous control method therefor. The multi-stage driven escalator with a self-healing function comprises: single-stage driving electric motor sets provided on two ends of the escalator, a multi-stage driving electric motor set provided between the single-stage driving electric motor sets, and a main controller (4), wherein the single-stage driving electric motor sets and the multi-stage driving electric motor set are configured for driving the escalator to move, and are further configured for collecting operation data and transmitting the operation data to the main controller (4), the operation data comprising rotational speed data and current data; and the main controller (4) is connected to the single-stage driving electric motor sets and the multi-stage driving electric motor set, and is configured for receiving the operation data and issuing a control instruction on the basis of the operation data, the control instruction being configured to control the single-stage driving electric motor sets and the multi-stage driving electric motor set to operate. The multi-stage driven escalator with a self-healing function effectively reduces the total pulling force borne by a transmission device, and when a certain driving electric motor fails, the operation power of the other driving electric motors can be automatically regulated, so as to implement fault self-healing, thereby ensuring the reliability and stability of a working process.

IPC Classes  ?

• B66B 25/00 - Control of escalators or moving walkways
• B66B 23/02 - Driving gear

Abstract

The present invention relates to the technical field of mine roadway utilization. Provided is an arrangement method for roadway junctions for compressed air energy storage in abandoned mine roadway space. The method comprises: using a geophysical prospecting method to perform preliminary prospecting on a roadway junction to determine the stress and deformation states of roadway surrounding rock at the roadway junction, so as to determine the range of elastic-plastic areas; dividing the roadway junction into a plurality of areas; digging equilateral triangle-shaped recesses in the two sides of the roadways; using grouting and grouting anchor cables to reinforce the roadway surrounding rock; providing air pipes in the middle portions of the roadways, and simultaneously providing three-way valves in roadway intersection areas, and wrapping the outer side of each air pipe with a protection layer; and, according to area division, performing filling and sealing. The method uses area-based grouting reinforcement treatment to effectively reduce the treatment difficulty and improve the bearing capacity of roadways, and uses communication pipes to connect a plurality of roadways so as to ensure smooth air circulation. In addition, roadway junctions configured by using the method have better sealing tightness and stability, thereby providing convenience for compressed air energy storage.

IPC Classes  ?

• E21F 17/16 - Modification of mine passages or chambers for storage purposes, especially for liquids or gases

Abstract

An in-situ testing apparatus and testing method for rockbolt support response characteristics under dynamic and static loading. The apparatus comprises a static load jack (1), a dynamic load jack (2), nitrogen springs (3), a pressure-bearing plate (4), a safety ring (5), a pressurizing device (6), and a remote control device (7), wherein the static load jack (1) and the dynamic load jack (2) are coaxially arranged by means of a connecting rod (8); the safety ring (5) is arranged on the side surface of the static load jack (1); the dynamic load jack (2) has an annular jack structure; the pressure-bearing plate (4) is connected to a loading end of the dynamic load jack (2); a through hole is provided in the middle of the pressure-bearing plate (4); a plurality of nitrogen springs (3) are disposed on one side of the pressure-bearing plate (4); and the pressurizing device (6) comprises an energy storage cavity (14), a plunger pump (15), and a pneumatic power device. By means of the apparatus, static load pullout characteristic testing of the support of a rockbolt (28) at an engineering site can be implemented, and the dynamic load disturbance response characteristics of the rockbolt (28) in different operating states can also be measured, thereby achieving comprehensive testing under superposition of static load and dynamic load disturbances with respect to the actual support performance of the rockbolt (28) on site.

IPC Classes  ?

• G01N 3/36 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means

Abstract

A thermal management system of a ship composite energy power system and a control method thereof are provided, including a thermal management circuit, which includes a seawater heat exchange circuit, an internal combustion engine thermal management circuit, a hydrogen fuel cell thermal management circuit, and a power battery and accessories thermal management circuit. It provides a thermal management control strategy for composite energy of internal combustion engine, fuel cell, and power battery; the various circuits can be independently adjusted; the heat dissipation effect is obvious, and the temperature of each cooling circuit can be better controlled; the energy utilization rate can be improved; the heat can be transferred to the other subsystems, and the heat dissipation area can be enlarged; and the fuel cell circuit can be elevated to the temperature by the heat exchanger and the electric heater, and it can reach the target working temperature more quickly.

IPC Classes  ?

• H01M 10/615 - Heating or keeping warm
• F01P 3/20 - Cooling circuits not specific to a single part of engine or machine
• F01P 5/10 - Pumping liquid coolantArrangements of coolant pumps
• F01P 7/14 - Controlling of coolant flow the coolant being liquid
• F02D 41/06 - Introducing corrections for particular operating conditions for engine starting or warming up
• H01M 8/04007 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
• H01M 8/04029 - Heat exchange using liquids
• H01M 8/04225 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-downDepolarisation or activation, e.g. purgingMeans for short-circuiting defective fuel cells during start-up
• H01M 8/04302 - Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
• H01M 8/0432 - TemperatureAmbient temperature
• H01M 8/04746 - PressureFlow
• H01M 10/625 - Vehicles
• H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
• H01M 10/6571 - Resistive heaters
• H01M 16/00 - Structural combinations of different types of electrochemical generators

Abstract

The present disclosure provides a method of perceiving a position and pose of a hydraulic support group based on multi-point ranging and belongs to the field of test or measurement technologies unlisted in other categories. The method uses a hydraulic support group. The hydraulic support group includes multiple juxtaposed hydraulic supports. The method includes: with a plane above a base as a reference plane, establishing a reference coordinate system; perceiving a relative position of the base and a canopy of the hydraulic supports and perceiving a position and pose of a single hydraulic support; when the hydraulic supports have axial offset and roll phenomenon, performing offset amount calculation; based on the perception of the position and pose of single hydraulic supports, performing perception on the position and pose of the hydraulic support group. In the present disclosure, the measurement devices achieve conversion of pure distance information into three-dimensional pose information of an object in time and space by using logical combination of several real-time ranging terminals, leading to simple structure; there is no interference between measurement devices, and there is wireless connection between a signal transmitting device and a signal receiving device, resulting in no rendezvous point and being free from impact of frictional force.

IPC Classes  ?

• G01S 11/02 - Systems for determining distance or velocity not using reflection or reradiation using radio waves
• F15B 15/28 - Means for indicating the position, e.g. end of stroke
• G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
• G01F 17/00 - Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
• G01S 5/02 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using radio waves
• G01B 11/27 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing the alignment of axes
• G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons

Abstract

A method of analyzing influencing factors of a contribution rate of elastic energy of a top plate during catastrophe of a coal body; the specific steps are: obtaining coal seam gas pressure; according to a drilling histogram, obtaining coal seam thickness and top plate thickness; taking a core on site and processing the core into a standard test piece; obtaining, by means of an indoor mechanical test, elastic moduli of the top plate and of gas-containing coal, respectively; substituting the obtained elastic moduli and thicknesses of the top plate and of the gas-containing coal into a calculation formula so as to obtain the contribution rate of the elastic energy of the top plate; and analyzing the influence of the contribution rate of the elastic energy of the top plate in the two situations of configuring the same thickness ratio and a different elastic modulus ratio and the same elastic modulus ratio and a different thickness ratio. In the described method, the role of the elastic energy of the top plate in a coal-gas dynamic disaster is fully considered while the influencing factors of the contribution rate of the elastic energy are analyzed. The method has important theoretical significance and practical engineering value. Moreover, the method has positive significance for the prediction and prevention of mining-induced rock burst-coal and gas outburst and other complex dynamic mining disasters.

IPC Classes  ?

• G01N 33/22 - FuelsExplosives
• G01N 3/00 - Investigating strength properties of solid materials by application of mechanical stress

Abstract

Disclosed in the present invention is a method for determining a drilling powder rate index of a large-diameter destressing drillhole on a coal seam. By means of a coal-body drilling-destressing synchronization test, by using obtained drilling powder-stress curves for a 42 mm standard hole and a large-diameter destressing drillhole, and in view of a drilling powder rate index of the 42 mm standard hole, a drilling powder rate index of the large-diameter destressing drillhole is determined. The present invention takes into consideration the influences of the diameter and a destressing effect of a drillhole, such that critical drilling powder of the large-diameter destressing drillhole that is obtained by using the drilling powder rate index reflects a coal-body burst early-warning critical stress after drillhole destressing, and when drilling-method monitoring is performed by using the large-diameter destressing drillhole, the result is more accurate. The present invention is not only suitable for determining a drilling powder rate index of a drillhole which has a destressing effect and a diameter of 100-200 mm or even larger, but is also suitable for determining drilling powder rate indexes of drillholes which have other diameters and have no destressing disturbance. The present invention performs an indoor test by using a coal body on a test working face, and takes into comprehensive consideration the influences of factors such as the strength of coal bodies of different coal mines on a drilling powder rate index, and therefore further conforms to actual site situations of a coal mine.

IPC Classes  ?

• G01N 5/00 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
• G01N 33/22 - FuelsExplosives

Abstract

Disclosed in the present invention are a system and method for monitoring a roof overburden and a coal pillar of a gob-side entry. The system comprises a top monitoring station, a coal pillar comprehensive monitoring station, a roof stress monitoring station and an upper computer. A top monitoring station is arranged in a crossheading to monitor a working face; a coal pillar comprehensive monitoring station is arranged at a horizontal roadway on a working face of a lower coal seam to monitor a coal pillar; and a roof stress monitoring station is arranged at a main roadway in a mining area to monitor the coal pillar. Each monitoring station is controlled by means of an upper computer to perform continuous monitoring, such that during tunneling or stoping of two adjacent working faces, the stress and deformation distributions of the coal pillar and a movement damage process of an overburden structure in a goaf can be continuously monitored. By means of the invention, various monitoring stations are arranged in a crossheading of an upper coal seam and an entry at a working face of a lower coal seam, thereby ensuring, to the greatest possible extent, that after the working face is stoped to form a goaf, all overburden movement monitoring stations are still in a working state, and do not fail due to the formation of the goaf. The drilling construction used in the present invention is performed in an entry, such that the monitoring safety risk can be reduced, and data support is provided for the stability analysis of a coal pillar and the movement calculation of a roof overburden.

IPC Classes  ?

• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

The present invention relates to the technical field of mine support, and in particular to an anti-rock-burst automatic support device for mines. The anti-rock-burst automatic support device for mines comprises symmetrically distributed bases, wherein slide brackets are slidably connected to the bases; hydraulic rods are fixedly connected to each base, and telescopic ends of the hydraulic rods are fixedly connected to an adjacent slide bracket; brackets are fixedly connected to the slide brackets; a main support plate is provided on the symmetrically distributed brackets; first push rods symmetrically distributed at equal intervals and third push rods symmetrically distributed at equal intervals are provided on the main support plate; and symmetrically distributed second push rods and symmetrically distributed fourth push rods are fixedly connected to the main support plate, and the second push rods and the fourth push rods are slidably connected to piston plates, respectively. In the present invention, by means of compressing springs between the piston plates and the fourth push rods, the impact force on the device when a rock burst occurs in a mine is reduced, and the device supports the mine, thereby ensuring the stability of the top of the mine.

IPC Classes  ?

• E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor

Abstract

A long-endurance self-powered ocean buoy includes a buoy body, a power generation device and a gas bag base; the power generation device is mounted at a lower end of the gas bag base and includes a housing, a first power generation assembly, a second power generation assembly and a storage battery; the first power generation assembly includes a plurality of mutually-communicated gas chambers, hydraulic bags and control integration units. The lowest gas chamber is filled with a volatile working medium which can generate gas pressure by volatilization to drive power generation fans in turbines on a vent pipe communicating adjacent gas chambers for power generation. The second power generation assembly includes a plurality of temperature difference energy modules with one end surrounded by a phase change material and the other end in contact with the housing, so as to increase the power generation efficiency.

IPC Classes  ?

• F03B 13/20 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member and another member wherein both members are movable relative to the sea bed or shore
• B63B 22/24 - Buoys container type, i.e. having provision for the storage of material
• F03G 7/05 - Ocean thermal energy conversion, i.e. OTEC
• H02K 7/18 - Structural association of electric generators with mechanical driving motors, e.g.with turbines

Abstract

Disclosed in the present invention is a multi-stage yielding and anti-impact device suitable for anchoring support, comprising an anti-impact component, a second-stage yielding component, and a first-stage yielding component. The first-stage yielding component and the second-stage yielding component each comprise an outer sleeve, an inner extrusion sleeve, and a diameter expanding stage arranged at the bottom end of the inner extrusion sleeve; a buffer energy-absorbing material filler body is arranged between the outer sleeve and the inner extrusion sleeve; the outer diameter of the outer sleeve in the first-stage yielding component is kept consistent with the large-diameter end of the diameter expanding stage in the second-stage yielding component, and the outer sleeve in the first-stage yielding component abuts against the bottom of the diameter expanding stage in the second-stage yielding component. According to the present invention, multi-stage yielding of an anchor rod/anchor cable under high working resistance is achieved, broken failure during impact dynamic load disturbance superposition is also avoided, the dual functions of multi-stage yielding and anti-impact are achieved, and effective control over deformation and breakage of tunnel surrounding rock is ensured.

IPC Classes  ?

• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection

Abstract

3333, so as to achieve the aims of reducing exhaust emissions of the underground coal mine diesel vehicle and improve exhaust purification efficiency.

IPC Classes  ?

• F01N 3/021 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters

Abstract

A multi-stage pressure yielding and anti-impact device for anchoring support is proposed, which includes an anti-impact component, a secondary pressure yielding component, and a primary pressure yielding component. The primary pressure yielding component and the secondary pressure yielding component each include an outer sleeve, an inner extrusion sleeve, and an expansion platform, and the expansion platform is arranged at a bottom end of the inner extrusion sleeve. A buffering and energy-absorbing material filling body is arranged between the outer sleeve and the inner extrusion sleeve. An outside diameter of the outer sleeve in the primary pressure yielding component is equal to that of a large-diameter end of the expansion platform in the secondary pressure yielding component, and the outer sleeve in the primary pressure yielding component is pressed against a bottom of the expansion platform in the secondary pressure yielding component.

IPC Classes  ?

• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection

Abstract

A test system for an anchoring performance of a full-size rock mass anchor bolt under combined load and relates to the technical field of detection test equipment includes a primary frame, a co-directional pull-twist loading mechanism and a vertical shear loading mechanism. The primary frame includes a dual-parallel horizontal reaction frame and a vertical reaction frame. The co-directional pull-twist loading mechanism and the vertical shear loading mechanism are arranged in synergy with the primary frame. The co-directional pull-twist loading mechanism performs synchronous pull and twist loading for the anchored rock mass and the vertical shear loading mechanism applies a static load or simulates a dynamic load disturbance. The co-directional pull-twist loading mechanism and the vertical shear loading mechanism perform separate loading.

IPC Classes  ?

• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
• G01N 3/22 - Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces

Abstract

A ship hydrogen hybrid power propulsion system and a method thereof are provided. The ship hydrogen hybrid power propulsion system includes a motor, a propeller, a power battery, an external motor controller, an internal motor controller, a hydrogen fuel cell, a hydrogen internal combustion engine, and a hydrogen storage tank. It combine the hydrogen fuel cell with the hydrogen internal combustion engine, and the hydrogen fuel cell is combined with the power battery and dynamically coupled with the internal motor and the external motor. Only a single hydrogen energy is needed, which is conducive to the layout and integration of the power system and achieves zero carbon emissions. Compared to the current dual motor power system, it has high integration, simpler power coupling, and a wider range of power output, making it particularly suitable for the high load and high-power output requirements of heavy-duty ships.

IPC Classes  ?

• B63H 21/20 - Use of propulsion power plant or units on vessels the vessels being powered by combinations of different types of propulsion units
• B63B 17/00 - Vessels parts, details, or accessories, not otherwise provided for
• B63H 21/14 - Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
• B63H 21/17 - Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
• B63H 21/21 - Control means for engine or transmission, specially adapted for use on marine vessels
• B63H 23/30 - Transmitting power from propulsion power plant to propulsive elements characterised by use of clutches
• B63H 23/34 - Propeller shaftsPaddle-wheel shaftsAttachment of propellers on shafts
• F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
• F02M 31/20 - Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
• H01M 8/04014 - Heat exchange using gaseous fluidsHeat exchange by combustion of reactants
• H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
• H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
• H01M 8/04119 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyteHumidifying or dehumidifying
• H01M 8/0662 - Treatment of gaseous reactants or gaseous residues, e.g. cleaning
• H01M 10/44 - Methods for charging or discharging
• H01M 16/00 - Structural combinations of different types of electrochemical generators
• H02K 11/33 - Drive circuits, e.g. power electronics

Abstract

The present disclosure relates to the technical field of medical supplies, in particular to a fusion cage. The fusion cage comprises a main body, which is a flat-shaped porous structural body and composed of a plurality of structural units. The fusion cage provided by the present disclosure is the flat-shaped porous structural body composed of the plurality of structural units, the porosity of the whole structure of the fusion cage is controlled by using the parametrization design, so the elastic modulus of a fusion body is effectively reduced, and then each structural unit comprises the basal body and the plurality of extension portions extending from the surface of the basal body, the surfaces of the basal body and/or the extension portions are composed of the plurality of curved surfaces through smooth connection, and such design effectively reduces the problem of stress concentration, and improving the postoperative recovery effect of patients.

IPC Classes  ?

• A61F 2/44 - Joints for the spine, e.g. vertebrae, spinal discs

Abstract

A swirl structure-based exhaust aftertreatment device for an underground mining diesel vehicle comprises a water tank, a PM collection tank, an inlet tube, a high-speed rotary exhaust separator, an exhaust catalytic converter, a circulating NOx selective catalytic reduction system and an exhaust tube. The high-speed rotary exhaust separator comprises a Laval tube, a throat tube, a swirl tube and a first deposition tube. The concentration of toxic and harmful components in exhaust can be decreased below a concentration threshold, thus avoiding pipeline blockage caused by PM accumulation.

IPC Classes  ?

• F01N 3/28 - Construction of catalytic reactors
• F01N 3/033 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
• F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
• F01N 3/037 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of inertial or centrifugal separators, e.g. associated with agglomerators
• F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
• F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features

Abstract

A thermal power plant temperature variable alarm prediction method and system based on an amplitude change trend. The method comprises: acquiring historical data and current data of a temperature variable of each measurement point of a thermal power plant device; on the basis of the historical data and the current data of the temperature variable of each measurement point, predicting a probability that the temperature variable of each measurement point leads to an alarm state, a non-alarm state, or an unknown state in the future; and according to the probability that the temperature variable of each measurement point leads to the alarm state, the non-alarm state, or the unknown state in the future, obtaining a prediction probability that a data section of an amplitude rising trend of the current data of the temperature variable of each measurement point triggers the alarm state, and a confidence interval of the prediction probability, and updating and displaying in real time in an image user interface. The present invention has important significances in improving the application effect of an alarm system in industrial production, reducing economic losses caused by production anomalies, and avoiding serious production accidents.

IPC Classes  ?

• G08B 31/00 - Predictive alarm systems characterised by extrapolation or other computation using updated historic data

Abstract

Disclosed are an underground engineering rock mass shear simulation test device, a test method and a test machine. The test method includes: setting different test conditions by a controller to perform cyclic shear test at high temperature, fracture shear seepage test, granite uniaxial compression test at high temperature and granite fracture shear test under constant normal stiffness boundary conditions at room temperature. The electric heating wire assembly, the fan assembly and the environmental box are combined to flexibly and uniformly heat the samples placed in the upper shear box and the lower shear box. In terms of shear-seepage test, this scheme proposes a second sample placing mechanism that realizes sealing through sealing capsule and sealing capsule pressing plate. It realizes stable sealing and facilitates monitoring and debugging of seepage parameters.

IPC Classes  ?

• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
• G01N 1/44 - Sample treatment involving radiation, e.g. heat
• G01N 33/24 - Earth materials

Abstract

The present disclosure discloses a method for estimating a contribution rate of elastic energy of a top plate during instability catastrophe of a deep gas-containing coal body, which specifically includes the following steps: acquiring gas pressure of a coal seam; acquiring a thickness of the coal seam and the top plate according to a borehole histogram; coring in the field, processing and pre-processing coal samples, and acquiring an elastic modulus of the top plate, gas-containing coal and standard specimens of a gas-containing coal-rock combination through indoor mechanical tests, respectively; deducing contribution of the elastic energy of the top plate with the help of a graphic area for a stress-strain curve, and obtaining a quantitative expression of the contribution rate of the elastic energy of the top plate based on the elastic modulus and the thickness of the top plate and the gas-containing coal. According to the present disclosure, the function of the elastic energy of the top plate in coal-rock gas dynamic disasters is taken into full account, and a calculation method and a specific quantitative calculation formula are given, so that the function of the elastic energy of the top plate in disasters can be more clearly understood, and beneficial reference is provided for accurate prevention and control of coal-rock gas dynamic disasters in mines.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01N 3/06 - Special adaptations of indicating or recording means
• G01N 33/24 - Earth materials

Abstract

The disclosure provides a rock stratum grouting water blocking test device and method under a mining coupling condition, and relates to the technical field of permeability testing. The device includes a solution box, a test box, a pressing plate replacement box, a grouting pump, a recovery pool and a water pump, the solution box is connected with the test box through a liquid injection pipe, the bottom of the test box is connected with the pressing plate replacement box, the pressing plate replacement box is connected with a bottom plate, and the bottom plate is connected with a control panel. The device can be used for testing the influence of the single-factor or multi-factor coupling action of temperature, water quality, water pressure, water flow and grouting pressure on the grouting effect.

IPC Classes  ?

• G01N 3/56 - Investigating resistance to wear or abrasion

Abstract

A volume liquid fixed-ratio multi-batch mixing valve includes a valve body, including a first inlet liquid chamber, a second inlet liquid chamber and a mixing chamber; a first valve core, controlling liquid inflow into the first inlet liquid chamber; a second valve core, controlling liquid inflow into the second inlet liquid chamber; a liquid drainage valve core, controlling liquid drainage; a rotary shaft includes a first impeller and a second impeller. The first impeller and the second impeller alternately control flow to the first inlet liquid chamber and the second inlet liquid chamber and to the second inlet liquid chamber and the mixing chamber. The first impeller and the second impeller are symmetrically about the rotary shaft; when the first inlet liquid chamber and the second inlet liquid chamber are communicated, the second valve core closes the second inlet liquid chamber and the mixing chamber.

IPC Classes  ?

• F16K 11/22 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F16K 31/53 - Mechanical actuating means with toothed gearing

Abstract

A subsonic compressor, a rotor blade and a method for flow stability enhancement are provided. The subsonic compressor includes a hub and a casing, a tip clearance is formed between a tip of the rotor blade and an inner wall of the casing. The tip clearance is formed as a circumferential diverging leakage passage expanding from a pressure surface side of the rotor blade of the subsonic compressor at the tip to a suction surface side of the rotor blade at the tip.

IPC Classes  ?

• F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
• F04D 17/10 - Centrifugal pumps for compressing or evacuating

Abstract

The present disclosure relates to an efficient biodegradable dust suppressant for an open-pit mine and a preparation method therefor. The dust suppressant includes the following components in percentage by weight: 2%-3.5% of gallic acid, 1.5%-2% of sodium alginate, 0.25%-2% of a surfactant, 0.5%-1% of an antifreeze liquid, and balance water. The preparation method includes the following steps: (1) preparing the gallic acid; (2) preparing the antifreeze liquid; (3) weighing the components in parts by weight; (4) mixing the gallic acid, water, sodium alginate and antifreeze liquid; (5) adding the surfactant; and (6) adding the balance water to prepare the efficient biodegradable dust suppressant for an open-pit mine. The present disclosure has the characteristics of low temperature resistance, high temperature resistance, bonding, wetting, coal dust consolidation and the like, is biodegradable, and does not cause secondary pollution. Meanwhile, the present disclosure causes no harm to human body and the environment.

IPC Classes  ?

• C09K 3/22 - Materials not provided for elsewhere for dust-laying or dust-absorbing

Abstract

Provided is a method and system for predicting a height of a confined water rising zone. The method includes: obtaining sample data; dividing the sample data into a training sample and a test sample; calculating a degree of correlation between a height and a correlation factor value sequence; screening correlation factors according to the degree of correlation to obtain screened correlation factors; calculating weights of the screened correlation factors using an entropy weight method (EWM); obtaining standardized screened correlation factor value sequences according to correlation factor value sequences corresponding to the screened correlation factors; calculating a value of each indicator according to the standardized screened correlation factor value sequences and the weights; and obtaining a height prediction model of a confined water rising zone based on principal component analysis (PCA)-particle swarm optimization (PSO)-support vector regression (SVR), the value of each indicator, and the test sample.

IPC Classes  ?

• G06N 3/006 - Artificial life, i.e. computing arrangements simulating life based on simulated virtual individual or collective life forms, e.g. social simulations or particle swarm optimisation [PSO]
• G06F 18/2135 - Feature extraction, e.g. by transforming the feature spaceSummarisationMappings, e.g. subspace methods based on approximation criteria, e.g. principal component analysis
• G06F 18/2337 - Non-hierarchical techniques using fuzzy logic, i.e. fuzzy clustering
• G06F 18/2411 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on the proximity to a decision surface, e.g. support vector machines
• G06F 18/27 - Regression, e.g. linear or logistic regression

Abstract

A drilling device for coal mining is provided, including a placement board. The placement board is fixedly connected to a first support pillar and a second support pillar, and the first support pillar and the second support pillar are together fixedly connected to a transmission rod; the transmission rod is connected to support rods symmetrically distributed in a limited sliding manner, and the support rods symmetrically distributed are connected to a connecting rod in a sliding manner; the connecting rod is provided with grooves evenly distributed in a circumferential direction, the grooves are fixedly connected to pneumatic telescopic blocks, and the telescopic end of each pneumatic telescopic block is fixedly connected to an arc-shaped plate. The arc-shaped plate is extended in a circumferential direction to support the drilled hole close to the drill bit, preventing the collapse of the drilling wall close to the drill bit.

IPC Classes  ?

• E21B 7/00 - Special methods or apparatus for drilling
• E21B 3/02 - Surface drives for rotary drilling
• E21B 19/081 - Screw-and-nut feed mechanisms
• E21B 21/01 - Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
• E21C 37/00 - Other methods or devices for dislodging with or without loading
• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal

Abstract

The present disclosure relates to the field of GNSS and INS integrated navigation technology, and specifically discloses a GNSS and INS integrated navigation positioning method and a system thereof. To addresses the technical problem of positioning error divergence in integrated navigation systems caused by insufficient satellite visibility or strong multipath effects in GNSS denial environments, a method combining motion constraint algorithm and neural network algorithm is proposed for robustness by the present disclosure. The motion constraint algorithm is very stable, but it cannot self-adaptively adjust the constraint threshold based on the vehicle motion state. The neural network algorithm has strong flexibility, but the obtained predicted values inevitably have outliers. The present disclosure combines motion constraints with the neural network algorithms, enabling these two algorithms to complement advantages of each other, thereby effectively improving the positioning accuracy and reliability of the integrated navigation system after GNSS losing lock.

IPC Classes  ?

• G01S 19/39 - Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
• G01S 19/40 - Correcting position, velocity or attitude
• G01S 19/49 - Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system whereby the further system is an inertial position system, e.g. loosely-coupled
• G01S 19/52 - Determining velocity

Abstract

A method and system for predicting water flooding recovery of fault block reservoirs considering a whole process optimization includes: determining influencing factors in water flooding recovery of fault block reservoirs; screening master parameters of the water flooding recovery of the fault block reservoirs; determining a single-factor correlation between the water flooding recovery of the fault block reservoirs and the master parameters; designing multi-factor orthogonal experimental schemes; performing a whole-process water flooding optimization for each of the experimental schemes including separate-layer injection and production, well-type conversion, and injection and production adjustment, to obtain the maximum water flooding recovery; and determining a prediction model of the water flooding recovery of the fault block reservoirs using least square method based on results of the whole process optimization of orthogonal experiments, further obtaining a prediction model of the water flooding recovery of the fault block reservoirs.

IPC Classes  ?

• E21B 43/20 - Displacing by water
• G06F 30/20 - Design optimisation, verification or simulation
• G06F 111/10 - Numerical modelling

Abstract

The present invention relates to the technical field of information detection and intelligent supervision, and provides an operation and maintenance management and control integrated system for an urban elevator. An intelligent single elevator monitoring system in the present invention is used for collecting operation parameters of parts of an in-service elevator, integrating maintenance personnel monitoring information and sensor monitoring information, and implementing accurate judgment of a fault in a single elevator by means of a cloud assessment model, and an urban GPRS data transmission system transmits online single elevator monitoring data to an urban operation and maintenance management and control big data platform; and a remote monitoring communication service system enhances maintenance and management of the transmitted data and ensures signal quality; the urban operation and maintenance management and control big data platform integrates all the intelligent single elevator monitoring systems in a city, an operation state of any elevator is monitored online in real time by means of a terminal, and a navigation positioning system is combined by means of feedback communication and an intelligent maintenance and protection system, so as to achieve functions of faulty elevator device positioning and maintenance personnel positioning, and implement rapid order dispatching for maintenance, thus forming an operation and maintenance management and control integrated system for the urban in-service elevator.

IPC Classes  ?

• B66B 9/04 - Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Abstract

The present invention relates to the technical field of dynamic safety monitoring of elevator shafts, and provides a three-dimensional scanning reconstruction and deformation dynamic monitoring system for an elevator shaft. According to the present invention, real-time reconstruction of a three-dimensional data model of an elevator shaft is implemented by using a three-dimensional scanning system consisting of upper and lower three-dimensional scanners; dynamic monitoring of elevator guide rail deformation is implemented by means of a deformation monitoring system using vibration sensors; measurement of the running speed of an elevator is implemented by using a rotational speed sensor mounted at an output port of a traction machine. Therefore, data reference is provided for safe running and risk monitoring of elevators.

IPC Classes  ?

• B66B 9/04 - Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Abstract

The present invention relates to the technical field of elevator fault diagnosis. Provided are an online state inspection system for a hoisting rope of an elevator and an inspection method therefor. The system comprises a weak magnetic induction module, an image capture module, a controller, a computer, and an alarm and brake module, wherein the controller comprises a magnetic-field change determination module and an image information transmission module; the computer comprises an image processing module and a hoisting-rope state determination module; the weak magnetic induction module and the magnetic-field change determination module communicate with each other; the controller controls the image capture module to capture a hoisting rope image and transmits the captured hoisting rope image by means of the image information transmission module to the image processing module of the computer to perform preprocessing, hoisting-rope edge detection and contour fitting; and the hoisting-rope state determination module determines the state of a hoisting rope according to a contour fitting result, and transmits a determination result to the controller, and finally the controller controls the alarm and brake module according to the determination result, and the alarm and brake module raises the alarm and performs braking control on an elevator.

IPC Classes  ?

• B66B 9/04 - Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Abstract

The present invention relates to the technical field of elevator fault diagnosis, and provided thereby is an elevator safety fault diagnosis method based on multi-source information fusion. The method comprises: first, acquiring vibration signals of an elevator car and a reduction gearbox and a visual signal of an elevator car traction cable in the operation process of an elevator, performing data preprocessing on the acquired signals, and then extracting vibration signal features of the elevator car and the reduction gearbox and a transverse displacement signal feature of the elevator car traction rope; then, performing abnormal vibration signal detection according to the vibration signal features of the elevator car and the reduction gearbox to obtain an abnormal vibration signal detection result, and performing abnormal transverse displacement detection on the basis of the transverse displacement signal feature of the elevator car traction rope to obtain an abnormal transverse detection result; and finally, fusing the abnormal vibration signal detection result and the abnormal transverse displacement signal detection result, and on the basis of the fusion result, determining whether to generate an emergency stop fault alarm for the elevator. In the method, a fuzzy information fusion theory is used to implement real-time centralized monitoring of the operating states of multiple components of the elevator.

IPC Classes  ?

• B66B 5/00 - Applications of checking, fault-correcting or safety devices in elevators
• B66B 5/02 - Applications of checking, fault-correcting or safety devices in elevators responsive to abnormal operating conditions
• B66B 7/12 - Checking, lubricating, or cleaning means for ropes, cables, or guides

Abstract

The present disclosure provides a heat supply device using an underground dry heat source. The heat supply device comprises a cold water supply device, a hot water suction pump and a heat supply pipeline, wherein the cold water supply device is arranged on the ground and used for injecting cold water into the heat supply pipeline; the hot water suction pump is connected with the heat supply pipeline; and the heat supply pipeline comprises a vertical well conduction section and a horizontal well heating section. The present disclosure further provides a heat supply method using the heat supply device using an underground dry heat source. The heat supply method comprises the followings steps: S1, exploring the underground dry heat source; S2, measuring the heat conductivity coefficient of hot dry rock; S3, drilling a well; S4, determining the number of branch wells; and S5, arranging a heat supply device.

IPC Classes  ?

• F24T 10/17 - Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using tubes closed at one end, i.e. return-type tubes

Abstract

A method and a system for determining a supporting structure by combining a stress environment and an underground surrounding rock structure are provided in the disclosure, which relates to the technical field of stability analysis of coal-mine rock mass. The method includes: defining a stress peak position and an in-situ stress position by determining the stress environment; identifying the underground surrounding rock structure, identifying lithology and constructing a three-dimensional model of a rock stratum to analyze damage degree of the rock stratum; pretreating, namely normalizing, the damage degree of the rock stratum at two sides and comparing the damage degree of the rock stratum at a roof and the floor; and identifying the supporting structure and determining supporting effectiveness and a supporting length. The method of the disclosure is different from related art, and ensures that the supporting structure meets mechanical foundation and practical engineering requirements as a whole.

IPC Classes  ?

• G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry

Abstract

The present invention relates to the technical field of inspection test apparatuses. Provided are a test system and method for anchoring performance of a full-scale rock mass anchor bolt under a combined load. The system comprises a main frame, a co-directional tension and torsion loading mechanism and a vertical shear loading mechanism. The main frame comprises a double-parallel horizontal counter-force frame and a vertical counter-force frame, and the co-directional tension and torsion loading mechanism and the vertical shear loading mechanism are cooperatively arranged with the main frame. The co-directional tension and torsion loading mechanism can synchronously load tension and torsion of an anchored rock mass, the vertical shear loading mechanism can apply static loads and simulate dynamic load disturbances, and the co-directional tension and torsion loading mechanism and the vertical shear loading mechanism can perform loading independently. Using the test system can perform anchor bolt tension tests, anchor bolt body tension and torsion tests, anchor bolt body tension, torsion and shear tests, anchor bolt and anchored rock mass tests, and apply coupled loads of tension, shear and torsion to the same anchored fracture surface at the same time, so as to effectively test the comprehensive mechanical property of anchor bolt components in rock masses in a combined stress state.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01N 3/22 - Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

The present disclosure discloses method for constructing a locomotive collaborative transportation scheduling system based on cyber-physical fusion, which provides a solution for multi-processor coordinated control of locomotive scheduling. The method includes the following steps: step 1, planning the actual on-site location of the device; step 2: constructing a distributed cyber-physical system collaborative architecture; step 3: describing the information transmission relationship between physical devices in a matrix manner to construct an information collaboration computing model; step 4: analyzing and selecting the matching controller type according to the device function implementation program; step 5: writing the controller function scheduling program to complete the construction of the locomotive collaborative transportation scheduling cyber-physical system, and realizing the locomotive automatic scheduling through this system.

IPC Classes  ?

• G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations

Abstract

The present disclosure discloses a volleyball passing training device, which includes an angle adjustment mechanism and a ball hoop arranged on the angle adjustment mechanism. The angle adjustment mechanism includes a connecting piece connected to the ball hoop, and a first connecting rod and a second connecting rod respectively hinged to the connecting piece. A sliding device which can slide or fix on the second connecting rod is arranged on the second connecting rod. The first connecting rod is hinged to the sliding device. Connecting lines of the hinge points between the first connecting rod and the connecting piece and between the second connecting rod and the connecting piece and the hinge point between the first connecting rod and the sliding device form a triangle.

IPC Classes  ?

• A63B 69/00 - Training appliances or apparatus for special sports
• A63B 47/02 - Devices for handling or treating balls for picking-up

Abstract

It discloses a sustained release grouting material, a preparation method and an application thereof; the sustained release grouting material comprises a water swelling core and a water-soluble sustained release coating, the water swelling core is composed of bentonite, SAP and xanthan gum, which is granulated by disc granulator relying on the cohesiveness of xanthan gum; the water-soluble sustained-release coating is prepared by mixing water-soluble starch, polyvinyl alcohol, poloxamer, lubricant and plasticizer with deionized water to obtain a film-forming solution, and the film-forming solution is coated on a coating machine; the invention uses a coating machine to coat a layer of slow-release coating on the surface of the water-absorbing expansion core, and adjusts the coating thickness by controlling the mass ratio of the coating film-forming liquid to the water-absorbing expansion core particles, so as to realize the controllable water absorption onset time of the expansion core.

IPC Classes  ?

• C04B 28/00 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
• C04B 24/16 - Sulfur-containing compounds
• C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
• C04B 40/06 - Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
• C04B 103/00 - Function or property of the active ingredients
• C04B 111/70 - Grouts

Abstract

A bidirectional self-regulating chemical flooding method and system for enhancing oil recovery includes: determining the average particle size of dispersed phase droplets under stable seepage flow of an oil-in-water emulsion according to the average reservoir permeability; determining injection concentration of an emulsifier which matches a target reservoir according to reservoir seepage velocity; under a condition of keeping the injection concentration of the emulsifier constant, determining the optimal injection concentration of a polymer which matches the injection concentration of the emulsifier through core flooding experiments with the maximum equivalent ton oil accumulation as a target; determining total injection amount of the emulsifier and total injection amount of the polymer for implementing well group units; and optimizing injection amount of the emulsifier and the polymer in each single well by using a numerical simulator of a chemical flooding reservoir.

IPC Classes  ?

• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons

Abstract

The present invention belongs to the technical field of mechanical fault data recognition, and discloses a cross-domain mechanical fault diagnosis method based on multi-channel feature fusion of an improved CBAM and use thereof, wherein the method comprises: conducting preliminary feature extraction in a grey-scale graph formed by original signals with convolutional neural network, obtaining high-level features, and compressing the high-level features with a full-connection layer module; conducting deep-level multi-sensor feature extraction with an improved convolutional block attention module (CBAM); conducting fusion for multi-sensor features extracted with an improved convolutional block attention module and obtaining multi-sensor fusion features; and inputting the multi-sensor fusion features into a tag assignor for fault diagnosis results. In the present invention, the latest multi-channel domain adaptation fault diagnosis method is used to realize efficiently intelligent fault diagnosis tasks of bearings in different working states.

IPC Classes  ?

• G01M 13/045 - Acoustic or vibration analysis
• G01M 13/028 - Acoustic or vibration analysis
• G06F 18/25 - Fusion techniques

Abstract

The present invention relates to the technical field of mine fire prevention and extinguishing, in particular to a liquid nitrogen direct injection and low-temperature foaming intelligent filling system based on mine fire area characteristics and an application method, comprising a liquid nitrogen storage tank, a liquid nitrogen direct injection system and a low-temperature foaming system, wherein the liquid nitrogen storage tank communicates with a liquid nitrogen pressurizing device through a main pipeline; a temperature control unit is arranged on the main pipeline; and the liquid nitrogen pressurizing device is connected with the liquid nitrogen direct injection system and the low-temperature foaming system, respectively, liquid nitrogen is directly injected into a foam liquid, to prepare a low-temperature foam type fire preventing and extinguishing material by means of forced convection, membrane boiling, explosion boiling and nucleate boiling between the liquid nitrogen and water.

IPC Classes  ?

• E21F 5/06 - Fluids used for spraying
• A62C 5/02 - Making of fire-extinguishing materials immediately before use of foam

Abstract

A rock stratum grouting and water plugging test device and method under a mining coupling condition, relating to the technical field of permeability testing. The device comprises a solution box (1), a test box (2), a press plate replacement box (5), a grouting pump (3), a recovery pool (4), and a water pump (7), wherein the solution box (7) is connected to the test box (2) by means of a liquid injection pipe (9), the bottom of the test box (2) is connected to the press plate replacement box (5), the press plate replacement box (5) is connected to a bottom plate (28), and the bottom plate (28) is connected to a control panel (6). According to the device, the performance influence test of a grouting material under a single-factor or multi-factor coupling effect of temperature, water quality, crack width, angle and roughness can be carried out, and the influence test of a single-factor or multi-factor coupling effect of temperature, water quality, water pressure, water flow and grouting pressure on the grouting effect can be carried out. According to the device, the temperature, the water injection pressure and flow, the temperature inside the box, the ion solution concentration, the leaching area, the grouting pressure, the water pressure, the water flow and the like can be controlled, and convenience is provided for related research of grouting materials and grouting effects.

IPC Classes  ?

• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

A dynamic loose vehicle formation method based on real-time online navigation map, which belongs to the field of vehicle formation technologies. The method includes a driver inputs travel information of a destination and waypoints in a GIS app; the GIS app uploads the travel information to a GIS server; the driver chooses to join a recommended formation or create a formation in the GIS app; when the driver chooses the formation and joins the formation, the formation information is displayed on the GIS app interface and sent to other vehicles within the formation for information interaction; when the driver chooses to leave the formation and leaves the formation, the formation is adjusted and the GIS server updates the formation information.

IPC Classes  ?

• G08G 1/127 - Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles to a central station
• G01C 21/00 - NavigationNavigational instruments not provided for in groups
• G01C 21/34 - Route searchingRoute guidance
• G01C 21/36 - Input/output arrangements for on-board computers

Abstract

A spindle deceleration energy-saving method for a no-load process between adjacent cutting activities of a numerical control machine tool. The method comprises: collecting a state rotational speed of a spindle and a no-load interval time between adjacent cutting activities; acquiring energy consumption of a numerical control machine tool in each motion state; on the basis of the state rotational speed of the spindle and the energy consumption of the numerical control machine tool in each motion state, acquiring energy consumption of the machine tool in a no-load motion process and energy consumption during the implementation of a spindle deceleration strategy; and presetting a precondition for energy saving, when the energy consumption of the machine tool in the no-load motion process, the energy consumption during the implementation of the spindle deceleration strategy and the no-load interval time meet the precondition for energy saving, acquiring a spindle deceleration energy-saving critical time, and when the no-load interval time is greater than the spindle deceleration energy-saving critical time, performing spindle deceleration in a no-load interval. By means of the method, the rotational speed of a spindle during no-load operation of a numerical control machine tool is decreased to reduce energy consumption of the machine tool in a no-load process, so as to increase the energy utilization rate of the machine tool, thereby avoiding the loss of a main transmission system and an electric motor caused by frequent starting and stopping of the machine tool.

IPC Classes  ?

• G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form

Abstract

The present invention discloses an energy saving method of spindle deceleration in a no-load process between adjacent cutting activities of a CNC machine tool, comprising: collecting spindle state speed and no-load interval time between adjacent cutting activities; acquiring the energy consumption of the CNC machine tool in each motion state; acquiring energy consumption of the machine tool in a no-load motion process and energy consumption when a spindle deceleration strategy is implemented based on the spindle state speed and the energy consumption of the CNC machine tool in each motion state; presetting energy saving prerequisites; acquiring the energy saving critical time of spindle deceleration after the energy consumption of the machine tool in the no-load motion process, the energy consumption when the spindle deceleration strategy is implemented and the no-load interval time satisfy the energy saving prerequisites; and conducting spindle deceleration in a no-load interval when the no-load interval time is greater than the energy saving critical time of spindle deceleration. In the present invention, the spindle speed during no-load operation of the CNC machine tool is decreased to reduce the energy consumption in the no-load process of the machine tool, so as to improve the energy utilization rate of the machine tool, and thus avoid the loss of a main transmission system and a motor caused by frequent start and stop of the machine tool.

IPC Classes  ?

• G05B 19/416 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
• H02P 3/00 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters

Abstract

Provided is a steam jet multifunctional aircraft deicing vehicle with steam jet, includes a vehicle body, where a steam generating assembly is arranged in the vehicle body, and the steam generating assembly is connected with a steam conveying assembly. A moving assembly is rotatably connected above the vehicle body, and the moving assembly is rotatably connected with an execution assembly. The execution assembly includes a first spray head assembly and a second spray head assembly. The steam conveying assembly includes a first supercharger and a second supercharger arranged side by side, where an air outlet end of the first supercharger is communicated with one end of a first air outlet pipe, and an other end of the first air outlet pipe is communicated with spray heads of the second spray head assembly through a first air pipeline.

IPC Classes  ?

• B64F 5/23 - Ground installations for de-icing aircraft by liquid applicationSpraying installations therefor, e.g. fitted on vehicles
• B05B 13/00 - Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups

Abstract

A method, system and apparatus for evaluating and controlling the time-energy efficiency of a numerical control machine tool. The method comprises: the influence of factors such as the startup rate and extra startup number of times of numerical control machine tool equipment on the energy efficiency of the numerical control machine tool is comprehensively analyzed, and a mathematical model of the time-energy efficiency of the numerical control machine tool and the startup rate and extra startup number of times of the numerical control machine tool is constructed. The time-energy efficiency of the numerical control machine tool is monitored in real time, so that an over-limit alarm function of the time-energy efficiency of the numerical control machine tool is achieved, and finally, the time-energy efficiency of the numerical control machine tool is controlled within a target range. The influence of shutdown loss of the numerical control machine tool on the energy efficiency of the numerical control machine tool is analyzed, and an over-limit alarm for the time-energy efficiency of the numerical control machine tool can be achieved. Therefore, corresponding measures can be taken quickly and in a targeted manner during machining, and the method is a low-carbon and practical method for evaluating and controlling the energy efficiency of a machine tool.

IPC Classes  ?

• G05B 19/408 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data

Abstract

The present disclosure provides a grouting and water-plugging device for a fractured rock in a mine coupling state and a test method, and relates to the technical field of rock mechanics testing. The device includes a pressurizer, a reservoir, a test box, and a grouting pump. The reservoir includes a temperature sensor and a pressing-water plate. The pressing-water plate is connected to the pressurizer through a pressurizing rod. A pressure measuring pipe and a drainage pipe are installed on an outer side of the reservoir. The reservoir is connected to a water pump through a water injection pipe. The test box includes a rock, a transverse force exerting plate, a longitudinal force exerting plate, a stress sensor and the temperature sensor. The longitudinal force exerting plate is provided with multiple water through holes. A sliding box door is hinged to a front wall of the test box. The pressure measuring pipe and the drainage pipe are installed on a rear wall of the test box. The rear wall of the test box is connected to the grouting pump through a grouting pipe. A water pressure gauge is installed on the grouting pipe. Valves are installed on the grouting pipe, the pressure measuring pipe, the water injection pipe, and the drainage pipe. The device can be used to conduct a test, simulating coupling conditions of stress-temperature-water pressure in a mine, for a rock, and to verify the effectiveness of water plugging.

IPC Classes  ?

• G01N 3/12 - Pressure-testing
• G01N 33/24 - Earth materials

Abstract

The present disclosure relates to a hydraulic support with a quick response function for coal wall spalling, which includes a base, an upright post, a top beam, an extensible canopy, a face guard, and a vibration meter. The vibration meter is mounted on a hydraulic support, and detects a vibration signal of a coal wall in a non-contact mode. The face guard includes a primary face guard, a secondary face guard, and a tertiary face guard connected in sequence. One side, close to a coal wall, of the primary face guard is connected to a quick response device. The quick response device is in signal communication with the vibration meter. After receiving the vibration signal of the coal wall, the quick response device is abutted against the coal wall before the secondary face guard and the tertiary face guard fit the coal wall.

IPC Classes  ?

• E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor
• E21D 23/00 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyors, mining machines or guides therefor
• E21D 23/16 - Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

A system for deformation measurement in an indoor rock mechanics test based on a cable sensing technology and a method, relating to the technical field of rock mechanics tests. The system comprises a strain sensor, a coal rock sample (1), a monitoring apparatus, and a computer. The strain sensor comprises a coaxial cable (2), a joint press-fit device (6), and a male connector (5). The joint press-fit device (6) is disposed on the coaxial cable (2). The strain sensor determines an attachment manner on the basis of the coal rock sample (1) and to-be-measured parameters. The monitoring apparatus comprises a vector network analyzer (7) and a terminal load (3). The computer processes and records collected data, records frequency values of feature valleys corresponding to reflection points, and calculates strain values between the reflection points by means of data conversion, to determine displacement parameters. According to the method, strain and deformation at a surface of the sample, inside the sample, and near any cracks in the sample during deformation and damage of the coal rock sample (1) can be monitored. The invention has advantages such as bendability, anti-interference, large measurement range.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details
• G01N 3/06 - Special adaptations of indicating or recording means
• G01N 3/20 - Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge

Abstract

The present invention relates to the technical field of intelligent calculation. Disclosed is a sensor network coverage optimization method based on a novel compact particle swarm algorithm. A novel compact particle swarm optimization algorithm is utilized to optimize network coverage of sensors. In the novel compact particle swarm optimization algorithm, the Pareto distribution is used to describe the location of a particle swarm, and a Gaussian perturbation policy is synchronously added. Sensors in a sensor network coverage optimization problem are equivalent to a particle swarm in the optimization algorithm. The sensors are randomly arranged in an initial environment, and then the locations of the sensors are moved and optimized according to the optimization algorithm. The coverage of the sensors after each movement corresponds to a fitness value in the algorithm. The locations of the sensors are determined according to the dimensions of particles and a three-dimensional simulated environment diagram. Finally, the locations of the sensors are rearranged according to the dimensions of the particles obtained by the optimization algorithm. In the present invention, by adopting an improved optimization algorithm, a sensor network can reach maximum coverage.

IPC Classes  ?

• H04W 16/10 - Dynamic resource partitioning

Abstract

A dynamic shear test device and method based on a Hopkinson bar system, relating to the technical field of rock detection tests. Rapid fixing of a cylindrical sample (8) is achieved by means of rapid assembly of fixed shells (6); the cylindrical sample (8) is limited in the left-right direction by means of a limiting rotating plate (4) and a limiting block plate (5), and the limiting rotating plate (4) mates with a spring limiting rod (17), so that the cylindrical sample (8) rotates under the limiting of an extrusion rotating block (14) of an extrusion block (13); a comparative experiment is carried out on one cylindrical sample (8), and under the action of the liquid pressure in cooperation with extrusion plates (12), the temperature environment of the cylindrical sample (8) is well maintained, and the extrusion plates (12) made of organic silicon materials enable the cylindrical sample (8) to be better fixed in a large pressure environment, and do not block the rotation of the cylindrical sample (8) in a low pressure environment, so that the test position can be conveniently switched; a threaded limiting rod (21) mates with holders (20), so that a tester can conveniently and quickly switch the state of the test device, and the test efficiency is improved.

IPC Classes  ?

• G01N 3/30 - Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force
• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details

Abstract

The present invention relates to the technical field of mine devices, and provides an anti-impact protection apparatus using anchor cables to form a mesh, and a use method. According to the present invention, in view of the problems that ejected coal rock blocks are easily stuck on existing protection meshes and the existing protection meshes cannot cushion and intercept the ejected coal rock blocks, which may easily cause the coal rock blocks to rebound to injure operators, the anti-impact protection apparatus using the anchor cables to form the mesh is provided. The apparatus comprises fixing mechanisms, the fixing mechanisms are provided on a heading machine, interception mechanisms are mounted on the fixing mechanisms, and a resistance mechanism and a tightening mechanism are provided on each interception mechanism. The interception mechanisms of the present invention intercept the ejected coal rock blocks, and first steel wire ropes and second steel wire ropes cushion the ejected coal rock blocks, thereby reducing the impact force of the coal rock blocks; the resistance mechanisms realize slow reset of the first steel wire ropes and the second steel wire ropes, so as to prevent the intercepted coal rock blocks from being ejected due to the reset thereof; and the tightening mechanisms realize the interception and clasping of the coal rock blocks while preventing the coal rock blocks from being stuck in holes of the mesh.

IPC Classes  ?

• E21C 35/04 - Safety devices

Abstract

A monitoring and controlling method for a supporting pose of a hydraulic support includes reading length parameters of props; establishing a pose monitoring mathematic model; based on an interpolation algorithm, obtaining pose parameters including associated pose parameters of an angle of height, an angle of roof attachment, and angles of inclination of the props. The method further includes based on the support pose monitoring process, determining a current supporting pose; obtaining a contour line of a roof above the support, and determining a bulging edge of the roof; obtaining a height difference of a support canopy and the roof; calculating a target height and a target angle of roof attachment of the hydraulic support; based on a pose control mathematic model, calculating a target angle of height of the support; and substituting the target parameters into the pose monitoring mathematic model to solve target lengths of the props.

IPC Classes  ?

• G05D 3/20 - Control of position or direction using feedback using a digital comparing device

Abstract

A cyclic dynamic loading-confining pressure instantaneous unloading test device includes a load-supporting frame system, a cyclic dynamic loading system, a confining pressure loading system, a monitoring system, a control system and a data analysis system; the top of the load-supporting frame system is equipped with the cyclic dynamic loading system, the cyclic dynamic loading system is connected with the control system, the bottom of the load-supporting frame system is equipped with the confining pressure loading system, the cyclic dynamic loading system and the confining pressure loading system are equipped with the monitoring system, the monitoring system and the control system are connected with the data analysis system.

IPC Classes  ?

• G01N 3/34 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
• G01N 3/04 - Chucks
• G01N 3/38 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
• G01N 33/24 - Earth materials

Abstract

A long-endurance self-powered ocean buoy, comprising a buoy body (01), a power generation device (03) and an air bag base (02). The power generation device (03) is mounted at a lower end of the airbag base (02) and comprises a housing (1), a first power generation assembly, a second power generation assembly (6) and a storage battery (5). The first power generation assembly comprises: a plurality of air chambers, which are in communication with each other, a hydraulic bag (7) and a control integration unit, wherein the lowest air chamber is filled with a volatile working medium, and the air pressure generated by the volatilization of the working medium is utilized to drive a power generation fan in a turbine (8) on a vent pipe (9), which communicates adjacent air chambers, to generate power. The second power generation assembly (6) comprises a plurality of temperature difference energy modules, which each have one end surrounded by a phase change material and the other end coming into contact with the housing. The long-endurance self-powered ocean buoy generates power itself during the process of floating upwards and diving, a generated electric current is rectified and then stored in the storage battery, and same is then supplied to a buoy power supply, such that the endurance capability of the ocean buoy is greatly improved.

IPC Classes  ?

• B63B 22/00 - Buoys
• F03G 7/05 - Ocean thermal energy conversion, i.e. OTEC

Abstract

A dynamic load shearing test device and method based on a hopkinson bar system are provided in this disclosure, which relates to the technical field of rock detection tests. The device according to the disclosure includes a bearing frame, a carriage, a sample holding unit, a pressure environment generating unit, a sample switching unit, an incident bar and a transmission bar, and the test method includes following steps: test device assembly, device leveling, pre-test preparation, test conducting, sample angle switching and test device resetting. The disclosure has advantages that the cylindrical sample can be quickly fixed, a required temperature environment can be well maintained, the cylindrical sample can be better fixed in a high-pressure environment, rotation of the cylindrical sample is not hindered in a low-pressure environment, switching of test positions is facilitated, and test efficiency can be accelerated.

IPC Classes  ?

• G01N 3/04 - Chucks
• G01N 3/24 - Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces

Abstract

An anchor cable water diversion device for a rock burst risk mine, provided with a clamping mechanism (2); when a pressure sleeve (206) is pressed downwards, clamping jaws (203) get away in the circumferential direction, and after sleeving the water diversion device on an anchor cable, the pressure sleeve (206) is loosened to enable the clamping jaws (203) to clamp the anchor cable to complete mounting; the clamping jaws (203) are fixed by means of a locking assembly (209), so as to prevent the device from swinging, and make the device more firmly mounted on the anchor cable; a sealing mechanism (3) is arranged, so that when an anchor cable port is inserted into a rubber sleeve (302), the rubber sleeve (302) wraps the anchor cable port, and squeezes a fourth spring (303) during a downward pressing process, thus making the fourth spring (303) keep a certain squeezing force, and achieving a better sealing effect; and a steering mechanism (4) is arranged, when the direction of a water outlet pipe (10) is adjusted, a toothed disc (402) is made to slide upwards, so that the toothed disc (402) loses fit with a toothed circular tube (404), the toothed circular tube (404) is rotated to adjust the direction of the water outlet pipe (10), and then the toothed disc (402) is reset and fit with the toothed circular tube (404) again, thus manually changing the direction of the water outlet pipe (10) without removing the water diversion device.

IPC Classes  ?

• E21F 16/00 - Drainage
• E21D 21/00 - Anchoring-bolts for roof, floor, or shaft-lining protection

Abstract

Disclosed in the present invention is an oil port resource optimization scheduling method, comprising: step S11: establishing a lower-level scheduling model; step S12: establishing an upper-level scheduling module; step S13: using a multi-objective evolutionary algorithm to solve the lower-level scheduling model and the upper-level scheduling model; and step S14: determining a target berth and a berthing sequence of an oil tanker according to a solving result. According to the present invention, on one hand, the operation of the whole oil port can be ensured to be relatively balanced and relatively stable under the factor conditions of multiple storage tanks and multiple oil pipelines, and on the other hand, control targets of maximum profit of an oil port wharf and minimum total in-port time of the oil tanker can be achieved, the present invention is an optimal scheduling solution, and compared with a traditional manual compilation method, the intelligence and rationality are both obviously improved.

IPC Classes  ?

• G06Q 50/28 - Logistics, e.g. warehousing, loading, distribution or shipping

Abstract

a coal mine seismic event generation and seismic wave response monitoring method and apparatus. The apparatus comprises: a frame that is height-adjustable and used for simulating a high level hard and thick rock strata distribution structure being mined at the work face of a mine; a strong mine seismic event triggering apparatus used for simulating the generation of a seismic event; an equivalent energy calculation method used for simulating the generation of a strong seismic event; and a ground surface building model and a seismic wave response monitoring apparatus. The physically implemented apparatus and the method can simulate the mechanical process of triggering a high energy strong mine seismic event by the rupture of a high level hard and thick rock stratum, and can simulate the process and occurrence of multiple strong mine seismic events being triggered by the rupture of a plurality of high level hard and thick rock strata. Calculating the actual energy of a hypocenter at the work site allows for the source of the energy of a strong mine seismic event to be evidence-based, and the actual effect of a mining seismic effect on ground surface and downhole buildings can be obtained according to a hypocenter → surrounding rock media → target object actual propagation path, which conforms to the real conditions of a site.

IPC Classes  ?

• G01V 1/104 - Generating seismic energy using explosive charges
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection

Abstract

A collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting provided by the disclosure includes the following steps: step 1, driving into a coal seam to release pressure; step 2, low roof pre-splitting during driving process; step 3, supporting of roadway surrounding rock and support reinforcement; step 4, floor destressing of the roadway; step 5, high roof pre-splitting before mining; step 6, destressing and supporting of the advanced roadway surrounding rock during the mining process of the working face. The collaborative erosion-control method of releasing-splitting-supporting based on coal mass pressure relief and roof pre-splitting, and to carry out local pressure relief, roof pre-splitting and reinforcement support construction in the whole cycle of the coal working face in a progressive manner, so as to achieve the prevention and control of rock burst in the working face.

IPC Classes  ?

• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
• E21D 21/02 - Anchoring-bolts for roof, floor, or shaft-lining protection having means for indicating tension
• E21D 20/00 - Setting anchoring-bolts

Abstract

The present invention relates to the technical field of coal mine rock burst prevention and control, and provides a releasing-cracking-supporting cooperative burst prevention method based on coal body pressure relief and roof pre-cracking. The releasing-cracking-supporting cooperative burst prevention method based on coal body pressure relief and roof pre-cracking of the present invention comprises the following steps: step 1, pressure relief by driving into a coal seam; step 2, pre-cracking of a low-position roof during driving; step 3, supporting of roadway surrounding rocks and supporting reinforcement; step 4, pressure relief of a roadway floor; step 5, pre-cracking of a high-position roof before mining of a working face; and step 6, advance pressure relief and supporting of the roadway surrounding rocks during stoping of the working face. According to the releasing-cracking-supporting cooperative burst prevention method based on coal body pressure relief and roof pre-cracking of the present invention, local pressure relief, roof pre-cracking and supporting reinforcement construction are progressively performed in all periods of the stoping working face of a coal mine, thereby preventing and controlling the rock burst of the stoping working face.

IPC Classes  ?

• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
• E21F 17/18 - Special adaptations of signalling or alarm devices

Abstract

An intelligent control system for an emulsion pump comprises an emulsion pump (6), a housing (8), a coupling (9), a motor (10), a liquid supply tank (1), and an industrial personal computer (15). The emulsion pump (6) is embedded in the housing (8) and is connected to the motor by means of the coupling (9); the liquid supply tank (1) is connected to a filter core (4), and an outlet end of the filter core (4) is connected to the emulsion pump (6); a liquid level sensor (14) and a pressure sensor (12) provided in the liquid supply tank (1), a pressure relief valve (13) provided on the liquid supply tank (1), a mass sensor (3) outside the filter core (4), a PH sensor (7) provided in the housing (8), and a temperature sensor (11) mounted outside the housing (8) are all electrically connected to the industrial personal computer (15). The system is high in automation degree and reliability.

IPC Classes  ?

• F04B 49/06 - Control using electricity
• F04B 49/02 - Stopping, starting, unloading or idling control

Abstract

Disclosed are a compound impact-resistant device and an application thereof. The compound impact-resistant device includes an inner cylinder, a first pressure sensor and an outer cylinder; an inner cavity of the inner cylinder is connected to a magnetorheological damper, a spiral valve element, a floating piston and a spring from bottom to top; and the outer cylinder is connected to a piston rod, a bottom end of the piston rod penetrates a top of the inner cylinder, the spring and the floating piston to be connected to the spiral valve element, and a portion below the spiral valve element is filled with hydraulic oil. The compound impact-resistant device can provide specific initial support force and achieve active self-adaptation to dynamic impact, thus solving the problems that traditional hydraulic buffers cannot provide initial support force and traditional mechanical crushing members have difficulty in providing large support force.

IPC Classes  ?

• F16F 13/00 - Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
• F16F 9/34 - Special valve constructionsShape or construction of throttling passages
• F16F 9/36 - Special sealings, including sealings or guides for piston-rods
• F16F 9/53 - Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
• F16F 7/12 - Vibration-dampersShock-absorbers using plastic deformation of members
• F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details

Abstract

An intelligent control system for a high-pressure and high-flow emulsion pump station. The system comprises a high-flow water treatment system (1), a high-flow automatic liquid preparation apparatus (3), a large-capacity emulsion tank (8), a high-flow emulsion supply station (14), a high-pressure backwash filtering station (19), an emulsion pump and a pipeline booster pump. The control system can realize on-line monitoring and automatic liquid preparation, ensure that the internal and external pressure of a pipeline are balanced, eliminate pipeline vibration and meet the control requirements of a pump station system for medium contamination.

IPC Classes  ?

• E21F 17/00 - Methods or devices for use in mines or tunnels, not covered elsewhere
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Abstract

A dual-helical-gear speed reduction structure, comprising an input shaft, a high-speed shaft, a high-speed-level helical gear, a low-speed-level helical gear, a low-speed shaft, and an output shaft. The input shaft and the high-speed shaft are coaxially connected by means of a high-speed-level shaft coupling; a high-speed-level buffer pad is arranged between the high-speed shaft and the high-speed-level shaft coupling in an axial direction, and the input shaft is equipped with a high-speed-level brake drum; the output shaft and the low-speed shaft are coaxially connected by means of a low-speed-level shaft coupling, a low-speed-level buffer pad is arranged between the low-speed shaft and the low-speed-level shaft coupling in the axial direction, and the output shaft is equipped with a low-speed-level brake drum; the high-speed-level helical gear is fixedly installed on the high-speed shaft, the low-speed-level helical gear is fixedly installed on the low-speed shaft, the high-speed-level helical gear is engaged with the low-speed-level helical gear, and the high-speed-level helical gear and the low-speed-level helical gear have the same normal modulus, normal pressure angle, transverse modulus and transverse pressure angle. According to the present invention, the gear reduction error can be reduced, the gear reduction reliability is improved, and the engagement transmission performance is better than traditional spur gear engagement transmission.

IPC Classes  ?

• F16H 1/08 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes the members having helical, herring-bone, or like teeth

Abstract

A crankshaft of a seven-bellcrank six-support structure. A through-type central lubricating oil hole (20) is formed in the crankshaft and located at the rotation center of an input shaft (1); branch lubricating oil holes communicated with the through-type central lubricating oil hole (20) are formed in all connecting rods; the front three bellcranks and the rear three bellcranks of the crankshaft are mirror-symmetrically distributed relative to a middle bellcrank; and a keyway (28) is formed on the input shaft (1) of the crankshaft. The crankshaft is different from a traditional seven-bellcrank that needs eight supports, and only needs six supports, is smaller in required size, and is not fully supported. Further provided is a machining method for a crankshaft, comprising the following steps: performing rough machining on the crankshaft by using a turning-milling composite machining center, i.e., sequentially performing rough turning, fine turning, fine milling, and milling machining on a keyway (28), and performing drilling machining on a through-type central lubricating oil hole (20) and all branch lubricating oil holes; and performing fine grinding on the crankshaft by using a numerically controlled crankshaft grinding machine. According to the method, a high-precision device is used for machining, so that high-speed cutting machining can be achieved, a requirement for machining precision can also be satisfied, guarantee is provided for the machining precision of a seven-bellcrank six-support crankshaft, and the machining efficiency of the crankshaft is improved.

IPC Classes  ?

• F16C 3/08 - Crankshafts made in one piece
• F16C 3/14 - Features relating to lubrication
• F16C 3/06 - Crankshafts

Abstract

A vaneless contra-rotating compressor with multiple contra-rotating interfaces and application of the vaneless contra-rotating compressor is provided, which includes at least two vaneless contra-rotating interfaces. For each of the at least two contra-rotating interfaces, the contra-rotating interface corresponds to two of vaneless contra-rotating rotors. A rotating direction of an upstream rotor of the two vaneless contra-rotating rotors and a rotating direction of a downstream rotor of the two vaneless contra-rotating rotors are opposite. Rectifier stator vanes are not provided among all the rotors to supply sufficient inlet negative pre-swirl for the downstream rotors through the upstream rotors. Only the outlet guide vanes of the last stage, of the vaneless contra-rotating rotors are provided. The number of stages and the number of vaneless contra-rotating interfaces may be set flexibly according to the actual pressurization requirements.

IPC Classes  ?

• F04D 19/02 - Multi-stage pumps
• F04D 29/32 - Rotors specially adapted for elastic fluids for axial-flow pumps

Abstract

The present invention relates to the technical field of rock mechanics tests, and provides a grouting and water plugging device and test method for fractured rock in a mine coupling state. The device comprises a pressurizer, a water storage tank, a test box, and a grouting pump. The water storage tank comprises a temperature sensor and a water pressure plate; the water pressure plate is connected to the pressurizer by means of a pressurizing rod; pressure measuring pipes and drainage pipes are mounted on the outer side of the water storage tank; and the water storage tank is connected to a water pump by means of a water injection pipe. The test box comprises rock, transverse force applying plates, a longitudinal force applying plate, a stress sensor, and a temperature sensor; a plurality of water through holes are formed in the longitudinal force applying plate; a push-pull box door is hingedly connected to the front wall of the test box by means of a hinge member; pressure measuring pipes and drainage pipes are mounted on the rear wall of the test box; the rear wall of the test box is connected to the grouting pump by means of a grouting pipe; a water pressure gauge is mounted on the grouting pipe; and valves are mounted on the grouting pipe, the pressure measuring pipes, the water injection pipe, and the drainage pipes. The device is used for performing a rock simulation test under the stress-temperature-water pressure coupled condition in a mine, and the water plugging effect is verified.

IPC Classes  ?

• G01N 3/12 - Pressure-testing
• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details

Abstract

A three-dimensional dynamic and static load test system for simulating deep roadway excavation and a method thereof are provided, which relates to the technical field of indoor simulation testing in underground engineering. The system includes a mobile platform, a box body, a support frame, a roadway excavation device, and a data monitoring unit. The system and method of the disclosure can reproduce the whole process of roadway excavation, simulate the multi-directional loading of deep roadway, and restore the real stress state of deep roadway under the influence of dynamic and static load superimposed disturbance. The problem of insufficient research under the condition of unidirectional static loading and lack of multi-directional dynamic and static loading in current large-scale experimental devices has been solved, and the stress and deformation of the surrounding rock of the roadway are reflected in real-time through the data monitoring unit.

IPC Classes  ?

• G01N 3/34 - Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
• G01N 3/12 - Pressure-testing

Abstract

A coupling thermal management system of a pure electric vehicle based on phase change heat storage. The system includes a refrigerant circuit and a coolant circuit, where heat exchange can be achieved between the refrigerant circuit and the coolant circuit through a plate type heat exchanger. The refrigerant circuit includes an electric compressor, an inside-vehicle heat exchanger, an outside-vehicle heat exchanger, a bidirectional electronic expansion valve, a four-way directional valve, a gas-liquid separator, first three-way valve, a first gate valve, a second gate valve, a plate type heat exchanger and a refrigerant tube. The coolant circuit includes a battery pack, a phase change material, a heat storage heat exchanger, a water pump, a second three-way valve, a third three-way valve, a fourth three-way valve and a coolant tube. The plate type heat exchanger is also included in the coolant circuit.

IPC Classes  ?

• B60H 1/00 - Heating, cooling or ventilating devices

Abstract

Disclosed is a method for deep-sea extraction of natural gas hydrates with reservoir top control and sand prevention, belonging to the technical field of natural gas hydrates mining. A grouting layer is constructed between a natural gas hydrates reservoir layer and an upper overburden layer by adopting a multi-branch horizontal well process, a vertical shaft is drilled further into the natural gas hydrates reservoir layer after the grouting layer is stabilized, and a mining device and a bottom plugging device are installed in the vertical shaft according to a thickness of the reservoir.

IPC Classes  ?

• E21B 41/00 - Equipment or details not covered by groups
• E21B 7/04 - Directional drilling
• E21B 33/13 - Methods or devices for cementing, for plugging holes, crevices or the like
• E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
• E21B 33/12 - PackersPlugs

Abstract

A transfer point chute blockage detection system based on dynamic material measurement. The system comprises: a conveying module, a transfer point chute (1), a signal collection carrier roller group (10), a signal collection module and a control module, wherein the control module determines a material blocking state according to measured material flow change situations at fixed-point positions on a first conveyor (8) and a second conveyor (9), has a material blocking state information prompt or display function, and can directly send an alarm, control or stop signal according to the material blocking state. The detection system is installed on a conveyor outside a chute, is not affected by the operation environment in the chute, performs chute blockage detection by means of real-time comparison and analysis of material flows, and has an adjustable detection range and a high detection precision.

IPC Classes  ?

• B65G 43/08 - Control devices operated by article or material being fed, conveyed, or discharged
• G01G 17/06 - Apparatus for, or methods of, weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge

Abstract

A method for estimating the contribution rate of elastic energy of a top plate during an instability-incurred catastrophe of a deep gas-containing coal body. The method comprises the specific steps of: acquiring the gas pressure of a coal seam; acquiring the thicknesses of the coal seam and a top plate according to a drilling histogram; performing on-site coring, processing and pretreating a coal rock sample, and respectively acquiring elastic moduli of the top plate, gas-containing coal and a gas-containing coal-rock combined standard piece by means of an indoor mechanical test; and deducing the contribution amount of elastic energy of the top plate by means of a stress-strain curve and by using the area of a graph, and obtaining a quantitative expression of the contribution rate of the elastic energy of the top plate on the basis of the elastic moduli and thicknesses of the top plate and the gas-containing coal. The function of elastic energy of a top plate in a dynamic disaster involving coal rock gas is taken into full consideration, a calculation method and a specific quantitative calculation formula are given, and a clearer understanding about the function of the elastic energy of the top plate in a catastrophe can be gained, thereby providing beneficial reference for precise prevention and control over dynamic disasters involving coal rock gas of a mine.

IPC Classes  ?

• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
• G01N 3/12 - Pressure-testing

Abstract

A method for analyzing factors influencing the contribution rate of roof plate resilience during a coal disaster; the specific steps are: obtaining coal seam gas pressure; according to a drilling histogram, obtaining coal seam thickness and roof plate thickness; taking a core on site and processing said core into a standard test piece; obtaining, by means of an indoor mechanical test, elastic moduli of the roof plate and of gas-containing coal, respectively; substituting the obtained elastic moduli and thicknesses of the roof plate and of the gas-containing coal into a calculation formula so as to obtain the contribution rate of roof plate resilience; and analyzing the influence of the contribution rate of roof plate resilience in the two situations of configuring the same thickness ratio and a different elastic modulus ratio and the same elastic modulus ratio and a different thickness ratio. In the described method, the role of roof plate resilience in a coal-gas dynamic disaster is fully considered while the factors influencing the contribution rate of resilience are analyzed. The method has important theoretical significance and practical engineering value. Moreover, said method has positive significance for the prediction and prevention of mining-induced rockburst-coal and gas outburst and other complex dynamic mining disasters.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation

Abstract

The present invention provides a three-dimensional dynamic and static load test system and method for simulating deep roadway excavation, and relates to the technical field of indoor simulation tests of underground engineering. The three-dimensional dynamic and static load test system for simulating deep roadway excavation comprises a mobile platform, a box body, a supporting frame, a roadway tunneling device, and a data monitoring unit. According to the three-dimensional dynamic and static load test system and method for simulating deep roadway excavation, the whole roadway excavation process can be reproduced, multidirectional loading of a deep roadway is simulated, the deep roadway is influenced by dynamic and static load superposition disturbance, and the real stress state of the deep roadway is restored. The problem of insufficient research under the conditions that only unidirectional static loading can be achieved and multidirectional dynamic and static loading is lacked in an existing large experimental device is solved, and the stress and deformation conditions of roadway surrounding rock are reflected in real time by means of the data monitoring unit.

IPC Classes  ?

• G01N 3/12 - Pressure-testing

Abstract

The present disclosure relates to the technical field of medical supplies, in particular to a fusion cage. The fusion cage comprises a main body, which is a flat-shaped porous structural body and composed of a plurality of structural units. The fusion cage provided by the present disclosure is the flat-shaped porous structural body composed of the plurality of structural units, the porosity of the whole structure of the fusion cage is controlled by using the parametrization design, so the elastic modulus of a fusion body is effectively reduced, and then each structural unit comprises the basal body and the plurality of extension portions extending from the surface of the basal body, the surfaces of the basal body and/or the extension portions are composed of the plurality of curved surfaces through smooth connection, and such design effectively reduces the problem of stress concentration, and improving the postoperative recovery effect of patients.

IPC Classes  ?

• A61F 2/44 - Joints for the spine, e.g. vertebrae, spinal discs

Abstract

A method for monitoring and controlling a supporting posture of a supporting-type hydraulic support on the basis of a dense point group, which method relates to the technical field of intelligent mining devices. The method comprises: basic structure parameters being built in a control panel for a hydraulic support, and determining variable posture parameters during the operation process of the support; establishing a posture monitoring mathematical model for the support, and sequentially inputting stroke data of a front stand column and a rear stand column of the support into the model at an interval; on the basis of a dense point group interval definition, establishing, by using an N-X division method, a dense point group sample graph for posture monitoring of the hydraulic support; establishing a posture control mathematical model for the support, inputting, at equal intervals, full posture data of an elevation angle and a vertex angle within a rational supporting swing angle range of the support, and establishing a dense point group sample graph for posture control of the hydraulic support; and quickly searching, by using the N-X division method, for the current supporting posture of the support in the dense point group sample graph, and quickly searching, by using the N-X division method, for target lengths of the front and rear stand columns of the support in the dense point group sample graph. The efficiency and precision of monitoring and controlling a hydraulic support are thus improved.

IPC Classes  ?

• E21D 23/12 - Control, e.g. using remote control
• E21D 23/04 - Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of propsMeans for counteracting lateral sliding on inclined floor
• G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation

Abstract

A method for monitoring and controlling the supporting posture of a supporting-type hydraulic support, which method relates to the technical field of intelligent mining devices. The method for monitoring and controlling the supporting posture of a supporting-type hydraulic support comprises: a support posture monitoring process, which involves: reading length (L8, L7) parameters of stand columns using stand column liquid level sensors (8) of a hydraulic support, establishing a posture monitoring mathematical model, and solving same by means of an interpolation algorithm, so as to acquire posture parameters comprising associated posture parameters such as an elevation angle (J1), a vertex angle (J7), and inclination angles (J8, J9) of the stand columns; and a support posture control process, which involves: according to the current supporting posture obtained in the monitoring process, first acquiring a contour line (11) of a top plate above the support by means of an area array laser sensor (10) and determining a protruding edge of the top plate, so as to obtain the elevation difference (ΔH) between a top beam (5) of the support and the top plate, calculating a target elevation (H') and a target vertex angle (J7') of the hydraulic support, calculating a target elevation angle (J1') of the support using a posture control mathematical model, substituting a target parameter into the posture monitoring mathematical model, obtaining, by means of calculation, target lengths (L7', L8') of the stand columns, and controlling the supporting posture. Full-time monitoring and control over an action posture of a hydraulic support can thus be realized.

IPC Classes  ?

• G01C 1/00 - Measuring angles
• G05D 3/12 - Control of position or direction using feedback
• E21D 15/44 - Hydraulic, pneumatic, or hydraulic-pneumatic props

Abstract

A photothermal seawater desalination material with a multi-stage structure and a preparation method and application thereof. The photothermal seawater desalination material includes a light-absorbing material having a C/WO3-x heterogeneous junction, which is obtained by depositing a nano-C material on a porous metal foam material using plasma enhanced chemical vapor deposition (PECVD), and then synthesizing WO3-x with plasma resonance effect by a solvothermal reaction.

IPC Classes  ?

• C01G 41/02 - OxidesHydroxides
• B01D 1/00 - Evaporating
• C01G 53/00 - Compounds of nickel
• C02F 1/14 - Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
• C23C 16/26 - Deposition of carbon only
• C23C 16/513 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• C02F 103/08 - Seawater, e.g. for desalination

Abstract

A self-propelled towing simulator for a hydraulic lift system carries a gyro pose control system and a six-degree-of-freedom (DOF) platform to control the overall pose of the simulator, so that the simulator simulates six-DOF motion states including swaying, surging, yawing, rolling, pitching and heaving generated by a mining vessel under the combined action of waves and flows and required by the experimental working conditions; interventions in the pose of the simulator may be positive or negative, so that the simulator may be applied to the uncontrollable natural water bodies so as to approximate to the working conditions of the experimental requirements. The simulator may carry out experiments in open natural water bodies by use of its own autonomous sailing capability under remote wireless control and may acquire parameters such as dynamic characteristics and spatial configuration and the like of a deep-sea mining hydraulic lift subsystem in real time.

IPC Classes  ?

• E21C 50/02 - Obtaining minerals from underwater, not otherwise provided for dependent on the ship movements
• B63B 21/56 - Towing or pushing equipment
• B63B 21/66 - Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables

Abstract

An intelligent skin based on a small-size distributed optical fiber sensing array. The intelligent skin includes an epidermis sensing array, an embedded optical fiber sensing array, a data collection system module, and a data processing mode recognition module. The body of the intelligent skin is made of a flexible material. The embedded optical fiber sensing array in an epidermis includes a plurality of all-fiber interferomatic sensing arrays. The data collection system module includes a broadband light source, an optical combiner/splitter, an optical path change-over switch, a signal detector and a computer. The data processing mode recognition module includes mode recognition and training of a neural network. The intelligent skin further includes an external display software used to perform intelligent sensing recognition for sense of touch, position, shape, and ingredient, temperature and vibration of an object and so on.

IPC Classes  ?

• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

The present application provides a two-gear transmission electric wheel, comprising a driving motor, a two-gear transmission mechanism, a housing, a rim, and a main shaft. The housing wraps the driving motor and the two-gear transmission mechanism; the two-gear transmission mechanism comprises a planetary gear assembly, a first disc brake, and a second disc brake; a first oil path leading to the first disc brake is formed in the housing; a second oil path leading to the second disc brake is provided in the main shaft; a rotor of the driving motor is transmitingly connected to a power input end of the planetary gear assembly; the rim is transmitingly connected to a power output end of the planetary gear assembly; the started first disc brake and the closed second disc brake enable the planetary gear assembly to work in a first-gear mode; and the started second disc brake and the closed first disc brake enable the planetary gear assembly to work in a second-gear mode. The electric wheel of the present application facilitates improvement in the power performance of the whole vehicle, and achieves the heat dissipation of a driving system.

IPC Classes  ?

• B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
• B60K 17/04 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
• F16H 3/44 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion

Abstract

A cluster control method and system for a magnetorheological anti-impact device. The method comprises: obtaining analog quantity and digital quantity signals uploaded by all anti-impact hydraulic support magnetorheological anti-impact devices on site, and on the basis of all the obtained signals, generating, by means of a first fuzzy control algorithm, the number of magnetorheological anti-impact devices that act cooperatively; if an impact force of a rock burst is greater than a preset impact force threshold, controlling the corresponding number of magnetorheological anti-impact devices to increase a damping force thereof to absorb more impact energies to resist impact; and if the impact force of the rock burst is less than the preset impact force threshold, controlling the corresponding number of magnetorheological anti-impact devices to decrease the damping force thereof to give way. According to the method, the defect that the existing anti-impact devices work independently and do not interfere with each other is overcome, so that a single hydraulic support anti-impact device in the cluster control system can realize complex collaborative impact resistance by means of interaction with other anti-impact devices.

IPC Classes  ?

• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators

Abstract

A method is to excavate main roadways in the upper and lower parts separately and an inclined intake roadway in the central part of the mine and pre-excavate an inclined seam roadway as the first mining face at the boundary on one side of the mine. Staring from the mine boundary, the retreating mining shall be carried out on the first mining face strip by strip with belt conveyors arranged in the upper main roadway and assistant conveying devices in the lower main roadway and inclined intake roadway; the open-off cut of the first mining face shall be built on the underside of the upper main roadway at the boundary of the mine to carry out the downward inclined mining on the strike and along the inclination.

IPC Classes  ?

• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
• E21F 1/00 - Ventilation of mines or tunnelsDistribution of ventilating currents
• E21F 13/06 - Transport specially adapted to underground conditions at or adjacent to the working face

Abstract

The present invention provides a method for realizing high stability of micro-nano optical fiber sagnac loop output by means of filter mode control, and belongs to the field of photoelectric detection technologies. In the present invention, the optical filter is combined with the micro-nano optical fiber Sagnac interference structure so as to control the Sagnac in-loop working mode by use of the mode selection characteristics of the filter. In this way, the interference mode is suppressed to better concentrate energy on the working mode, thereby improving the spectrum output uniformity and stability of the Sagnac loop. Further, the reflection and transmission modes of the optical filter do not participate in interference spectrum output and thus the performance of the system will not be affected. By designing and changing the parameters of the optical filter, the output characteristics of the interferometer can be dynamically controlled.

IPC Classes  ?

• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

Disclosed is a method of preparing artificial experimental samples imitating natural rock samples, comprising: on-site sampling; sample scanning by CT and building a 3D model of the rock mass sample; supporting by shaping a tunnel model and providing a plurality of rock bolts; making hole and fissure mold by making a rock mass model configured to generate holes and fissures; 3D printing the artificial experimental sample with mortar. When the 3D printing reaches a corresponding height and position of a hole or fissure, the rock mass model is placed on the unset mortar in a corresponding position, and the 3D printing continues, wherein the making hole and fissure molds includes: based on the 3D structures of the holes and fissures in the 3D model, making corresponding holes or fissures in the rock mass model with soluble solid materials, and filling a hollow structure of the rock mass model with solvent.

IPC Classes  ?

• G01N 37/00 - Details not covered by any other group of this subclass
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B28B 19/00 - Machines or methods for applying the material to surfaces to form a permanent layer thereon

Abstract

Disclosed is an auxiliary device for making a 3D printed tunnel model. The auxiliary device includes a main rod and an anchor insertion mechanism extendable into a tunnel opening of a physical model. The anchor insertion mechanism comprises a feed assembly comprising a fixed member on the main rod and a rotating member, and a power assembly installed on the main rod and configured to drive the rotating member. A surface of an anchor rod is defined with a slot in an axial direction; the rotating member is threadedly connected with the anchor rod; the fixed member is provided with a perforation coaxial with a screw hole on the rotating member for the anchor rod to pass through. The fixed member comprises a limiting ridge cooperating with the slot to limit the circumferential rotation of the anchor rod. A method of using the auxiliary device is also provided.

IPC Classes  ?

• B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber

Abstract

Disclosed in the embodiments of the present application is a method for measuring upward and downward displacement of a fully mechanized mining face device. The method comprises: receiving first point cloud data which corresponds to a first tunnel wall and is collected by a first laser radar; receiving second point cloud data which corresponds to a second tunnel wall and is collected by a second laser radar; respectively performing filtering processing and surface fitting processing on the first point cloud data and the second point cloud data, so as to obtain a first reference plane and a second reference plane; determining a first distance between the first laser radar and the first reference plane, and a second distance between the second laser radar and the second reference plane; determining a first displacement on the basis of the first distance and a pre-stored first standard distance, and determining a second displacement on the basis of the second distance and a pre-stored second standard distance; and according to the first displacement and the second displacement, determining a displacement type of a fully mechanized mining device. The present application is used for solving the technical problem of the measurement accuracy of an existing displacement measurement method for a fully mechanized mining device being low.

IPC Classes  ?

• G01B 11/03 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness by measuring coordinates of points
• G01B 11/02 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness

Abstract

The present invention relates to a speed-reducer operating condition and structure parameter optimization method based on transmission efficiency. The method comprises: step one, proposing a speed-reducer transmission efficiency expression, and various power loss expressions; step two, extracting structure parameters and operating condition parameters that can optimize the transmission efficiency of a speed reducer; step three, establishing a speed-reducer transmission efficiency simulated analysis model, analyzing the relationship between the structure parameters and operating condition parameters extracted in step two and the transmission efficiency, and selecting at least five parameters having the greatest influence to serve as optimized parameters for an orthogonal test; and step four, optimizing the transmission efficiency of the speed reducer by means of designing an orthogonal test scheme, simulation analysis, and optimization result evaluation, and finally obtaining an optimal parameter combination that meets the evaluation requirement. By means of the present invention, influence factors during the whole optimization process are taken into comprehensive consideration, such that the method is more suitable for the actual operation situations and has a wide application range; and for speed reducers with different structures, the optimization method can be used for greatly improving the transmission efficiency.

IPC Classes  ?

• G06F 30/17 - Mechanical parametric or variational design
• G06F 30/20 - Design optimisation, verification or simulation

Abstract

Disclosed in the present invention is a method for relieving the stope mine pressure based on a key layer reconstruction principle, comprising: first, determining by means of theoretical calculation the geometric dimension of a reconstructed key layer, comprising four parameters of a dip length, a strike length, the thickness, and the distance from a mining coal seam, while taking into full consideration the thickness and the lithology difference of the coal seam; establishing the quantitative mutual feedback relation between the strength and the thickness of the key layer, and from the perspective of ensuring that slip and instability do not occur to the key layer, providing a method for determining the strength and thickness of the key layer, and achieving the quantization design of a key layer reconstruction scheme; secondly, determining a key layer reconstruction field scheme, providing a cross-step bottom reverse grouting scheme, and designing parameters such as a drilling arrangement, a drilling variable diameter, a grouting material, and grouting time, the scheme being reasonable in design and high in operability; and finally, determining a key layer reconstruction construction process, comprising grouting time, a procedure, a labor organization, etc.

IPC Classes  ?

• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
• E21D 11/10 - Lining with building materials with concrete cast in situShuttering or other equipment adapted therefor
• G06F 17/10 - Complex mathematical operations