Abstract

An intelligent optimization method for welded beam includes the following steps: utilizing a Bernoulli map from a chaotic map to replace an original random population generation method; optimizing a linear decay pattern of Pal in a first strategy of NOA into a nonlinear decay pattern; applying Brownian motion strategy and Levy flight strategy to perform a position update of reference points PR1 and PR2 in a second strategy; and incorporating the sine cosine operator into the position updates of the second strategy. The method utilizes MATLAB software for programming, analyzing the original NOA algorithm and BSCNOA, and compares their optimization effects with GWA, WOA, and PSO. The results of the BSCNOA show better performance. The method addresses the shortcomings of the Nutcracker Algorithm and applies the proposed algorithm to the optimization problem of welded beam, significantly reducing the cost of welded beam.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G06F 119/18 - Manufacturability analysis or optimisation for manufacturability

Abstract

An auxiliary support device for a rolling-cut shear, including: a lower cutting table; a plurality of first hydraulic support cylinders, a plurality of support plates, a plurality of second hydraulic support cylinders shorter than the first hydraulic support cylinders, a slide plate, and a plurality of horizontal hydraulic cylinders. The lower cutting table includes a first front end including a first mounting groove, and a second mounting groove, and an inner plate. The bottom wall of the second mounting groove includes a plurality of first bolt holes and a plurality of first recesses. The inner plate is embedded in the second mounting groove through a plurality of bolts passing through the plurality of first bolt holes. The inner plate includes a plurality of second bolt holes and a plurality of second recesses. The plurality of support plates lean against the inner plate.

IPC Classes  ?

• B23D 15/06 - Sheet shears
• B23D 15/14 - Shearing machines or shearing devices cutting by blades which move parallel to each other characterised by drives or gearings therefor actuated by fluid or gas pressure
• B23D 33/02 - Arrangements for holding, guiding, or feeding work during the operation
• B23D 35/00 - Tools for shearing machines or shearing devicesHolders or chucks for shearing tools
• B23D 36/00 - Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock while the latter is travelling otherwise than in the direction of the cut

Abstract

A casting-rolling side sealing device with an electromagnetic stirring function is provided and includes a pair of side sealing plates covering two side ends of a casting-rolling zone from a casting-rolling starting end to a casting-rolling ending end respectively, a pre-tightening force is formed between one of the side sealing plates and adjacent casting rolls. A pulse end of a first electromagnetic assembly releases first pulses along a first axis direction parallel to a direction from the side ends to a center of the casting-rolling zone. The first pulses are configured to generate an electromagnetic stirring effect in the casting-rolling zone. A second electromagnetic assembly is arranged on each of the side sealing plates, a pulse end of the second electromagnetic assembly releases second pulses along a second axis direction perpendicular to the first axis direction.

IPC Classes  ?

• B22D 11/115 - Treating the molten metal by using agitating or vibrating means by using magnetic fields
• B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars

Abstract

1; 3. dividing the contour region in the single crystal region to find the corresponding cutting line; and 4. determining the final cutting line.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06F 30/392 - Floor-planning or layout, e.g. partitioning or placement
• G06T 7/11 - Region-based segmentation
• G06T 7/12 - Edge-based segmentation
• G06T 7/136 - SegmentationEdge detection involving thresholding

Abstract

Disclosed is a multi-angle image semantic segmentation method for cadmium zinc telluride chips, belonging to the field of image quality augmentation. Firstly, construction of an n+1 dataset is performed by using acquire CZT images, and then pixel-level and latent-level knowledge representation is performed through a Pixel Aggregation Network PAN and a Latent Aggregation Network LAN in a Progressive Complementary Knowledge Aggregation network PCKA, which ultimately improves the quality and speed of CZT image segmentation. The method is suitable for applications that require multi-angle image acquisition and semantic segmentation, such as semiconductor material segmentation.

IPC Classes  ?

• G06V 10/00 - Arrangements for image or video recognition or understanding
• G06T 7/00 - Image analysis
• G06V 10/141 - Control of illumination
• G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
• G06V 20/70 - Labelling scene content, e.g. deriving syntactic or semantic representations

Abstract

A wireless secure communication method based on RIS-NOMA under complex channel conditions, the method including: firstly, an intelligent surface is assume to be disposed between the base station and legitimate NOMA users, and between the base station and eavesdroppers; the signal to interference plus distortion noise ratio (SIDNR) for the legitimate NOMA user and the eavesdropper is calculated in the presence of RHI in the system; secondly, considering shadow fading and to simplify the overly complex calculation process, the probability density function and cumulative distribution function of the shadow fading are approximated; finally, the outrage probability and intercept probability of the legitimate users and eavesdroppers are calculated.

IPC Classes  ?

• H04B 7/04 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
• H04B 17/336 - Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A conveyor belt lifting mechanism which includes an L-shaped arm, a telescopic arm, and a supporting shaft and an online operation and maintenance robot for a pipe belt conveyor are provided. One end of the L-shaped arm is rotatable, an axial direction of a rotating shaft is parallel to a conveying direction of a conveyor belt, the telescopic arm is slidably connected to the other end of the L-shaped arm, and the telescopic arm extends and retracts in an extension direction of the L-shaped arm. A universal rotary driving portion is connected to an end of the telescopic arm, the supporting shaft is fixed to an output end of the universal rotary driving portion, and two supporting rollers are arranged on the supporting shaft. An included angle between rotating shafts of the two supporting rollers is the same as that between two adjacent idlers in the pipe belt conveyor.

IPC Classes  ?

• B25J 11/00 - Manipulators not otherwise provided for
• B25J 5/02 - Manipulators mounted on wheels or on carriages travelling along a guideway

Abstract

A fatigue bending and folding test device for an ultra-thin metal strip, including: a first driver module, a first folding module, a first diameter adjustment module, an expansion module, and a frame. The first driver module, the first folding module, the first diameter adjustment module, and the expansion module are all disposed on the frame. The first driver module includes a servo motor, a coupler, and a drive gearbox; the drive gearbox includes a driving gear shaft, a driven gear shaft, a plurality of output end covers, and a plurality of bearings. The first folding module includes an upper folding member, a lower folding member, and a first mounting base. The first clamping member includes a sliding block, a lower clamping plate, an upper clamping plate, a rotating shaft, an intermediate pressure plate, and a plurality of fixing bolts.

IPC Classes  ?

• G01N 3/20 - Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
• G01N 3/06 - Special adaptations of indicating or recording means
• G01N 33/20 - Metals

Abstract

The invention provides a dynamic proportional-integral-derivative (PID) method for plate straightening based on changes in yield strength. The method includes the steps of determining yield strength of a plate at an initial temperature; calculating a predicted straightening force of each straightening roll based on the yield strength; obtaining a measured straightening force of each straightening roll; determining yield strength errors Δσfront, Δσmiddle, and Δσrear using a numerical approximation method; determining parameters of a PID controller based on the yield strength errors Δσfront, Δσmiddle, and Δσrear; calculating a target reduction of a corresponding straightening roll based on the yield strength error Δσmiddle and the yield strength at the initial temperature; and adjusting a measured reduction of the current straightening roll using the PID controller with the parameters determined based on the target reduction.

IPC Classes  ?

• G05B 11/42 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
• B21D 1/02 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefromStretching sheet metal combined with rolling by rollers

Abstract

1 of the upper roller as the origin, a transverse end coordinate system is established, and the six segments of the left-half tooth are designed regarding parameters.

IPC Classes  ?

• B23P 15/28 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools

Abstract

Disclosed in the present invention are a method and apparatus for electrodepositing active material particles on an electrode current collector. The apparatus comprises an electrophoresis tank (2), wherein an electrolyte is contained in the electrophoresis tank (2), and solid particles to be deposited and the electrolyte form a sol; said solid particles are a substance or a mixture of a plurality of substances; a deposited conducting strip (5) vertically stands in the middle of the electrophoresis tank (2), and is connected to a positive electrode or a negative electrode of a direct-current power source (10), and a counter electrode (1) is divided into two parts, which are symmetrically distributed on two sides of the deposited conducting strip (5); the deposited conducting strip (5) is a flexible conducting strip or a non-flexible conducting strip; and the solid particles dispersed in the electrolyte are electrodeposited on two surfaces of the deposited conducting strip (5) by means of electrophoresis. By means of the present invention, an active material can be directly deposited on a flexible porous material, and continuous coating of a deposited conducting strip during a moving process can be realized by means of continuous electrodeposition.

IPC Classes  ?

• C25D 13/22 - Servicing or operating
• C25D 13/02 - Electrophoretic coating characterised by the process with inorganic material
• H01M 4/04 - Processes of manufacture in general
• H01M 4/139 - Processes of manufacture

Abstract

An intelligent cross wedge rolling mill for a large-sized axle in rail traffic. Two lower journals (409) are respectively detachably connected to left and right end faces of a lower roller (451); two upper journals (408) are respectively detachably connected to left and right end faces of an upper roller (452); separation shaft sleeves (454) are provided between an upper sliding shaft (405) and an upper bearing seat (401) and between a lower sliding shaft (407) and a lower bearing seat (402); each separation shaft sleeve is in the form of an inner spline structure; the upper sliding shaft or the lower sliding shaft is in the form of an outer spline structure; and the separation shaft sleeves are in meshing connection with the upper sliding shaft or the lower sliding shaft, so as to achieve rapid disconnection of the upper and lower rollers and the upper and lower journals, achieve the rapid operating and mounting of the rollers, satisfy requirements of rapid replacement, and increase the flexibility of rolling.

IPC Classes  ?

• B21B 13/02 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
• B21B 31/12 - Interchanging rolls, roll mountings, or stand frames by vertically displacing
• B21B 31/16 - Adjusting rolls
• B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
• B21B 38/08 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force

Abstract

A method for preparing a multilayer metal composite pipe. The method comprises the following steps: internally and externally grinding blank pipes; cleaning oil stains; performing multi-layer metal pipe sleeving; drawing to reduce the diameter; performing pipe end and pipe surface high-speed friction welding; performing a heating treatment; performing four-roller cross rolling; performing a straightening treatment; performing two-roller cold rolling; performing cold drawing to reduce the diameter; performing cold expansion to reduce a wall and expand the diameter; performing precise cold rolling; performing a degreasing treatment; performing a brightening treatment; performing a surface grinding treatment; cleaning dust; detecting multilayer metal interface bonding; detecting flaws; testing the metal structure performance; and performing a sizing and packaging treatment. According to the method, products with a higher precision, a better performance and more prominent limit specifications can be obtained. The composite pipe prepared by the method has a high bonding capacity, and the bonding rate between multiple layers of dissimilar metals can be significantly improved.

IPC Classes  ?

• B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
• B21B 25/00 - Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group Accessories or auxiliary means therefor
• B21D 3/02 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
• B21C 3/06 - DiesSelection of material thereforCleaning thereof with adjustable section
• B21C 37/08 - Making tubes with welded or soldered seams

Abstract

A method for preparing a high-performance and difficult-to-deform metal precision seamless tube, comprising the following steps: heating treatment, perforation treatment, external grinding of a raw tube, internal grinding of the raw tube, straightening treatment, four-roller warm rolling, warm drawing and diameter reducing, warm drawing, wall reducing and diameter expanding, precision cold rolling, degreasing treatment, polishing treatment, surface grinding treatment, dust sweeping, flaw detection, metal structure performance detection, and sizing and packaging treatment. By means of multiple cycles of steps of warm drawing and diameter reducing, warm drawing, wall reducing and diameter expanding, and precision cold rolling, the cooperative control of key indexes, such as product size precision, surface quality, material performance and grain size, can be achieved, and products with higher precision, better performance and more outstanding limit specifications can be obtained, satisfying the requirements of products of different difficult-to-deform metal materials and different final product specifications, and flexibly dealing with the preparation of metal tube products with different material characteristics; moreover, the production efficiency is increased, and the production cost is effectively reduced.

IPC Classes  ?

• B21C 37/06 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided forManufacture of tubes of special shape of tubes or metal hosesCombined procedures for making tubes, e.g. for making multi-wall tubes

Abstract

A large-scale axle intelligent cross wedge rolling mill for rail transit includes a main transmission device, a memorial arch unit, two worm-gear pressing devices, a roll assembly and two guide devices. The separation sleeves are engaged with the upper slide shaft and the lower slide shaft, respectively. Two lower shaft necks are detachably connected with the left end surface and the right end surface of the lower roller, respectively; two upper shaft necks are detachably connected with the left end surface and the right end surface of the upper roller, respectively, so that the quick disconnection of the upper and lower rollers with the upper and lower shaft necks is able to be achieved, so as to quickly operate and install the roll to meet the requirement of quick mold replacement, thus improving the flexibility of rolling.

IPC Classes  ?

• B21B 13/02 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
• B21B 19/16 - Rolling tubes without additional rollers arranged inside the tubes

Abstract

A robot includes a truss assembly, a walking assembly, a power unit, and a rack including a guide pillar, a second link. The truss assembly is disposed on the top of the rack. The walking assembly is disposed in the rack and fixedly connected to the rack through a bearing. The power unit is disposed on the rear end of the rack. An oil tank is provided with a hole. The truss assembly is configured to place the robot into the oil tank through the hole. The walking assembly is configured to drive the robot to move along the axis of the oil tank and to prevent the robot from toppling in the oil tank. The power unit is configured to clean the inside of the oil tank. The walking assembly includes two active walking assemblies, a drive assembly, and a folding assembly.

IPC Classes  ?

• B08B 9/08 - Cleaning of containers, e.g. tanks

Abstract

A device for binding rod bundles includes a tilting apparatus, a wire stripper, a binding apparatus, and a collection apparatus. The tilting apparatus includes a tilting platform, a hydraulic cylinder, and an articulated base. The wire stripper includes a main body, a first sliding mechanism, a second sliding mechanism, a first slide block, and a second slide block. The binding apparatus includes an electric clamp, a clamping frame, a sliding rail, a rail base, and a drive motor. The collection apparatus is hinged to the tilting apparatus; the wire stripper is disposed below the tilting apparatus; the tilting platform includes a hinge hole for receiving one end of the clamping frame. The collection apparatus includes a shaft hole for receiving one end of the tilting platform. The hydraulic cylinder is hinged to the articulated base and the other end of the tilting platform is hinged to the hydraulic cylinder.

IPC Classes  ?

• B65B 27/10 - Bundling rods, sticks, or like elongated objects
• B65B 13/18 - Details of, or auxiliary devices used in, bundling machines

Abstract

A method for forming a flow channel on a metal bipolar plate of a fuel cell includes: pre-treating a metal polar plate; subjecting the metal polar plate to low-temperature heating; forming a flow channel on the metal polar plate by rolling; cutting an inlet and outlet for gas and cooling liquid on the metal polar plate; performing surface treatment on the metal polar plate; bonding two metal polar plates to form a metal bipolar plate; and trimming the metal bipolar plate. The flow channel is formed by two pre-forming and one truing, and design parameters of punches and dies of the rollers used are determined by calculation models.

IPC Classes  ?

• H01M 8/026 - CollectorsSeparators, e.g. bipolar separatorsInterconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
• H01M 8/0206 - Metals or alloys

Abstract

A special roller machine for a metal polar plate. A box body is a square with a circular through hole in the middle part. Upper and lower pressing rollers are mounted in the circular through hole; the upper and lower pressing rollers are mounted in grooves formed in the lower sides of upper and lower sector rotating bodies through bearing seats and are connected with upper and lower rotating blocks respectively; the rotating blocks are symmetrically arranged and are connected with upper and lower servo electric cylinders through connecting rod mechanisms respectively, then the pressing rollers are finely adjusted; four identical arch-shaped plates are mounted on the inner surface of the circular through hole for locating the rotating blocks; and main transmission is implemented in such a way that a servo motor drives the lower pressing roller to move through a safety coupling, a reduction gearbox and a cross coupling.

IPC Classes  ?

• B21B 13/00 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
• B21B 13/02 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally

Abstract

A method for preparing a high-performance difficult-to-deform metal precision seamless pipe includes steps of performing a heat treatment; drilling; externally grinding; internally grinding; straightening; performing four-roller warm-rolling; performing warm-drawing to reduce a diameter; performing warm-expansion to reduce a wall thickness and increase the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting flaws; testing metal structure performance; and sizing and packaging. By cycling the warm-drawing, the warm-expansion, and the precision cold-rolling, key indicators such as product dimensional accuracy, surface quality, material properties, and crystal grain size can be collaboratively controlled, to achieve higher accuracy, better performance, and more outstanding extreme specifications. Product requirements of different hard-to-deform metal materials and different product specifications can be satisfied, to flexibly prepare metal pipe products with different material characteristics, which greatly improves production efficiency and effectively reduces production costs.

IPC Classes  ?

• B21B 19/04 - Rolling basic material of solid, i.e. non-hollow, structurePiercing

Abstract

A method for preparing a multilayer metal composite pipe includes steps of: internally and externally grinding blank pipes; cleaning oil stains; assembling a multilayer metal pipe; drawing to reduce a diameter; performing high-speed friction welding at the pipe ends; performing heat treatment; performing four-roller cross-rolling; straightening; performing two-roller cold-rolling; performing cold-drawing to reduce the diameter; performing cold-expansion to reduce the diameter; performing precise cold-rolling; degreasing; brightening; performing surface grinding; cleaning dust; detecting multilayer metal interface bonding; detecting flaws; testing metal structure performance; and sizing and packaging. By cycling the cold-drawing, the cold-expansion, and the precision cold-rolling, key indicators such as product dimensional accuracy, surface quality, material properties, and crystal grain size can be collaboratively controlled, so as to achieve higher accuracy, better performance, and more outstanding extreme specifications. The present invention solves the problem of inconsistent extension due to differences in metal properties.

IPC Classes  ?

• B21C 37/08 - Making tubes with welded or soldered seams
• B21C 3/06 - DiesSelection of material thereforCleaning thereof with adjustable section
• B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
• B21B 25/00 - Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group Accessories or auxiliary means therefor

Abstract

A dynamic straightening method for a left/right tilt. The method includes: drawing an unevenness curve according to a distance from a shapemeter to a surface of a plate, where there are a plurality of unevenness curves; using a barycentric formula to obtain a first barycentric coordinate of each unevenness curve; calculating a tilt value of a straightening roll corresponding to each unevenness curve according to the first barycentric coordinate of each unevenness curve; determining an unevenness curve of a current straightening roll; adjusting the straightening roll according to the tilt value of the straightening roll corresponding to the unevenness curve, to straighten the plate; and going back to the step of determining an unevenness curve of a current straightening roll until the plate is totally straightened. Such method improves plate straightening accuracy by dynamically adjusting parameters of the straightening roll.

IPC Classes  ?

• B21D 1/02 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefromStretching sheet metal combined with rolling by rollers
• B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses

Abstract

A system for flattening steel plates includes crane, a first conveyor, a second conveyor, a first shape detector, a second shape detector, a first rangefinder, a second rangefinder, a first detection device, a second detection device, a first idler roller, a second idler roller, a flattening machine, a first robot, a second robot, a third robot, and a fourth robot. The flattening machine is connected to one end of the first conveyor and one end of the second conveyor. The first shape detector is disposed above a middle part of the first conveyor. The second shape detector is disposed above a middle part of the second conveyor. The first rangefinder is disposed at one end of the first conveyor. The first detection device is disposed between the first rangefinder and the flattening machine. The second rangefinder is disposed on one end of the flattening machine.

IPC Classes  ?

• B21D 1/02 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefromStretching sheet metal combined with rolling by rollers
• B21D 43/08 - Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
• B21D 1/06 - Removing local distortions
• B21D 43/00 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profilesAssociations therewith of cutting devices
• B21D 43/20 - Storage arrangementsPiling or unpiling
• B21D 43/04 - Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work

Abstract

A device for detecting the flatness of a sheet material includes a conveyor, a gantry, a beam, an industrial camera unit, a speed measurement unit, a vibration measurement unit, a multi-line laser, a cable carrier, an industrial controller, and a control cabinet. The conveyor is disposed beneath the gantry and includes a plurality of pinch roll assemblies for feeding a sheet material. The beam is disposed on the gantry and includes a first side and a second side. The industrial camera unit is disposed on the first side of the beam and includes at least two industrial cameras. The speed measurement unit is disposed between the at least two industrial cameras. The vibration measurement unit is disposed on the second side of the beam and includes at least two distance measurement devices. The multi-line laser is disposed between the at least two distance measurement devices.

IPC Classes  ?

• G06T 7/207 - Analysis of motion for motion estimation over a hierarchy of resolutions
• B65H 43/04 - Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty articles

Abstract

Provided is a method for forming a straight flow channel of a metal bipolar plate of a fuel cell, belonging to the technical field of fuel cell polar plate production, and solving the technical problems of being unable to realize continuous production and power required for machining being high in existing methods for machining a metal bipolar plate. The technical solution used relates to a method for forming a straight flow channel of a metal bipolar plate of a fuel cell, the process thereof involving: plate material pretreatment, low-temperature plate material heating (6), metal polar plate straight flow channel rolling (7), cutting of a gas and cooling liquid inlet and outlet on a metal polar plate (8), metal polar plate surface treatment (9), metal polar plate bonding to form a bipolar plate (10), and bipolar plate trimming (11), wherein hot rolling of a straight flow channel of the metal bipolar plate involves each straight flow channel on a plate material being formed by means of carrying out pre-forming twice and shaping once, and specifically, after all flow channels on the plate material are pre-formed twice, all the straight flow channels are shaped by a pair of shaping rollers to obtain the shape of the straight flow channels; and the design parameters of rollers for carrying out pre-forming twice and punch-dies of the shaping rollers are determined.

IPC Classes  ?

• H01M 8/0258 - CollectorsSeparators, e.g. bipolar separatorsInterconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant

Abstract

A method for planning the gait of an ultra-large polar region scientific investigation vehicle having six crawler feet when crossing a snowbank, comprising the following steps: step 1, when a distance measuring sensor on a scientific investigation vehicle detects that a snowbank is present at the front, six crawler feet (6) all stop advancing, the whole scientific investigation vehicle remains still, and preparation for a snowbank crossing action is started; step 2, legs (3) are unfolded; step 3, the vehicle advances to cross the snowbank; and step 4, the legs (3) are withdrawn. When planning the gait during leg (3) unfolding and leg (3) withdrawing, the crawler feet (6) are continuously in contact with the surface of ice, thus preventing the problems of the severe deviation and tilting of a vehicle body when the scientific investigation vehicle crosses an obstacle, and ensuring that the ultra-large polar region scientific investigation vehicle having six crawler feet travels stably when crossing snowbanks and snow ridges in the Antarctic.

IPC Classes  ?

• B62D 57/02 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members
• B62D 57/032 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members with alternately or sequentially lifted supporting base and legVehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members with alternately or sequentially lifted feet or skid
• B25J 11/00 - Manipulators not otherwise provided for

Abstract

A gait planning method for a giant six-limb leg crawler foot polar scientific expedition vehicle spanning ice cracks, comprising an ice crack spanning preparation state, an ice crack spanning advancing state, and an ice crack spanning recovery state; the ice crack spanning preparation state comprises a total of 9 sequential decomposed action steps including overall forward movement, left middle limb leg crawler foot (C) and right middle limb leg crawler foot (D) rotation support, left front limb leg crawler foot (A) adduction, and right front limb leg crawler foot (B) adduction; the ice crack spanning advancing state comprises a total of 11 sequential decomposed action steps including right front limb leg crawler foot (B) and left front limb leg crawler foot (A) outward swinging, overall forward movement, right middle limb leg crawler foot (D) and left middle limb leg crawler foot (C) side swinging, and right rear limb leg crawler foot (F) and left rear limb leg crawler foot (E) inward swinging; and the ice crack spanning recovery state comprises a total of 3 sequential decomposed action steps including overall forward movement and left rear limb leg crawler foot (E) and right rear limb leg crawler foot (F) folding toward one another. Ice crack spanning by the giant six-limb leg crawler foot polar scientific expedition vehicle is thereby implemented, avoiding the occurrence of personnel and vehicle safety accidents.

IPC Classes  ?

• B62D 57/02 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members

Abstract

Disclosed are an airport power-assisted take-off and landing device, a take-off and landing method, and an ornithopter take-off device. The airport power-assisted take-off and landing device comprises a transverse cable (IV), fixed pulley assemblies (III) symmetrically arranged on two sides of an airport pavement (I), and reel assemblies (V) symmetrically arranged on the two sides of the airport pavement (I); the transverse cable (IV) is sequentially wound around a reel assembly (V), the fixed pulley assembly (III) at the same side, the fixed pulley assembly (III) at the opposite side, and the reel assembly (V) at the opposite side; and the reel assemblies (V) are driven by means of a superconductive external-rotor electric machine (6).

IPC Classes  ?

• B64F 1/04 - Ground or aircraft-carrier-deck installations for launching aircraft
• B64F 1/00 - Ground or aircraft-carrier-deck installations
• B64C 33/00 - Ornithopters

Abstract

A method for checking the design of locking assemblies is provided. A pressure on each contact surface and a torque that can be transferred by a spindle and a bushing after locking assemblies are locked are calculated. The calculated torque is compared with the designed maximum transferable torque to calculate a torque safety coefficient. Based on a minimum fit clearance, a resultant stress of components is calculated and is compared with a yield strength of the material of the components to calculate a strength safety coefficient of the components. A pre-tightening force of the bolts is obtained according to a given pre-tightening moment of the bolts. A maximum equivalent stress of the bolts is calculated to obtain a safety coefficient of the bolts. This method is able to be applied to the manufacturing of the locking assemblies.

IPC Classes  ?

• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• F16D 1/09 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces

Abstract

A giant six-legged polar research vehicle with tracked feet, including a platform, six legs arranged at six ends of the platform and six tracked feet arranged below the six legs. A monitoring device is arranged on a top cover. Six power compartments each having a steering device are arranged at six ends of a chassis in the platform. Each leg includes a main traveling device with an upper end and a lower end respectively connected to the steering device and a tracked foot, an auxiliary traveling device with an upper end and a lower end respectively connected to the chassis and the main traveling device, and a connecting device arranged on the main traveling device. The tracked foot includes a main flipping mechanism, an auxiliary flipping mechanism, a tracked foot slewing device, a crawler, a sliding plate and a suspension.

IPC Classes  ?

• B62D 57/02 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members
• H02S 10/12 - Hybrid wind-PV energy systems
• H02S 10/40 - Mobile PV generator systems
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• B62D 11/04 - Steering non-deflectable wheelsSteering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of separate power sources
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• B62D 55/104 - Suspension devices for wheels, rollers, bogies or frames

Abstract

A giant gully-crossing vehicle for polar scientific expeditions, including a gully-crossing bridge and a vehicle body. The vehicle body includes a stage and a travelling portion. The stage includes a top platform, a front bottom plate, a rear bottom plate and a multifunctional lock platform assembly. The front bottom plate and the rear bottom plate are capable of sliding independently relative to the top platform. The travelling portion includes a first travelling component, a second travelling component, a third travelling component, a fourth travelling component, a fifth travelling component and a sixth travelling component which are symmetrically provided at left and right sides of the stage and below the stage. Bridge bodies of the bridge components can be assembled to two gully-crossing bridges, and are connected to the multifunctional lock platform assembly when crossing gullies.

IPC Classes  ?

• B62D 57/032 - Vehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members with alternately or sequentially lifted supporting base and legVehicles characterised by having other propulsion or other ground-engaging means than wheels or endless track, alone or in addition to wheels or endless track with ground-engaging propulsion means, e.g. walking members with alternately or sequentially lifted feet or skid
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01D 15/127 - Portable or sectional bridges combined with ground-supported vehicles for the transport, handling or placing of such bridges or of sections thereof

Abstract

A short stress path-type electrode sheet rolling machine and an integrated machine equipment for manufacturing lithium battery electrode sheets, whereby the rolling machine comprises: an upper roller mechanism, a lower roller mechanism, an upper bearing base, a lower bearing base and a roller-gap adjusting mechanism; the upper roller mechanism is connected to the upper bearing base, and the lower roller mechanism is connected to the lower bearing base; the upper bearing base and the lower bearing base are connected by means of a guide shaft; the roller-gap adjusting mechanism is connected to the upper roller mechanism so as to adjust a roller gap between the upper roller mechanism and the lower roller mechanism. The rolling machine has a simpler and more reliable structure, has a shorter stress return path when performing electrode sheet rolling, and may improve rolling precision and rolling quality.

IPC Classes  ?

• B05B 3/04 - Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
• H01M 4/04 - Processes of manufacture in general
• H01M 4/139 - Processes of manufacture
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• B30B 3/04 - Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
• B05C 3/12 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length

Abstract

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform.

IPC Classes  ?

• B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
• B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
• B22D 11/16 - Controlling or regulating processes or operations
• B22D 11/124 - Accessories for subsequent treating or working cast stock in situ for cooling

Abstract

A production line for recycling and processing waste materials of steel rolling, the production line including: an electromagnetic hoisting equipment; a conveying platform; a clamping-and-feeding device; a segmentation shear; a swing conveyor device; a pushing device; a rolling-type shearing machine; a chain-type conveyor track; a material guiding device; two shredding-type shearing machines; and a scrap collection device. The electromagnetic hoisting equipment is connected to the conveying platform, and is configured to hoist waste materials of steel rolling to the conveying platform; the conveying platform is connected to the clamping-and-feeding device, and is configured to convey the waste materials to the clamping-and-feeding device; the segmentation shear cooperates with the clamping-and-feeding device and is configured to segment the waste materials of steel rolling into steel plates; the pushing device is configured to push the steel plates to the rolling-type shearing machine.

IPC Classes  ?

• B02C 23/38 - Adding fluid, other than for crushing or disintegrating by fluid energy in apparatus having multiple crushing or disintegrating zones
• B02C 19/00 - Other disintegrating devices or methods
• B02C 21/00 - Disintegrating plant with or without drying of the material
• B02C 23/02 - Feeding devices
• B23D 31/00 - Shearing machines or shearing devices covered by none or more than one of the groups Combinations of shearing machines
• B23D 15/12 - Shearing machines or shearing devices cutting by blades which move parallel to each other characterised by drives or gearings therefor
• B23D 33/08 - Press-padsCounter-basesHold-down devices
• B21D 43/00 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profilesAssociations therewith of cutting devices
• B23D 15/04 - Shearing machines or shearing devices cutting by blades which move parallel to each other having only one moving blade
• B23D 31/04 - Shearing machines or shearing devices covered by none or more than one of the groups Combinations of shearing machines for trimming stock combined with devices for shredding scrap
• B23D 31/02 - Shearing machines or shearing devices covered by none or more than one of the groups Combinations of shearing machines for performing different cutting operations on travelling stock, e.g. slitting and severing simultaneously
• B23D 35/00 - Tools for shearing machines or shearing devicesHolders or chucks for shearing tools
• B23D 33/02 - Arrangements for holding, guiding, or feeding work during the operation

Abstract

Disclosed in the present invention are a short stress path-type electrode sheet rolling machine and an integrated machine equipment for manufacturing lithium battery electrode sheets; the rolling machine comprises: an upper roller mechanism, a lower roller mechanism, an upper bearing base, a lower bearing base and a roller-gap adjusting mechanism; the upper roller mechanism is connected to the upper bearing base, and the lower roller mechanism is connected to the lower bearing base; the upper bearing base and the lower bearing base are connected by means of a guide shaft; the roller-gap adjusting mechanism is connected to the upper roller mechanism so as to adjust a roller gap between the upper roller mechanism and the lower roller mechanism. The rolling machine has a simpler and more reliable structure, has a shorter stress return path when performing electrode sheet rolling, and may improve rolling precision and rolling quality.

IPC Classes  ?

• H01M 4/1395 - Processes of manufacture of electrodes based on metals, Si or alloys
• H01M 4/04 - Processes of manufacture in general
• B30B 3/04 - Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
• H01M 10/058 - Construction or manufacture
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

A magnesium alloy cast-rolling unit, including: a main body; a fluid supplier; an electric pushrod; a linkage mechanism; a horizontal platform; a screw; dovetail guide rails; and a bottom plate. The main body includes a base, a spring cylinder, a hydraulic adjustment cylinder, a connection portion, and a cast-rolling unit body. The connection portion includes an arc-shaped rail. The spring cylinder includes an actuation element. The actuation element includes a piston rod and a pressure strip. The piston rod includes an external thread at one end; and the pressure strip includes an internal thread corresponding to the external thread. The fluid supplier includes a head box, a corrugated pipe, a compression spring assembly including a gland cover, a connection pipe including a convex pipe joint and a concave pipe joint, a flat plate including a groove, a smelting furnace, and a horizontal operation platform.

IPC Classes  ?

• B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
• B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
• B22D 11/16 - Controlling or regulating processes or operations
• B22D 11/124 - Accessories for subsequent treating or working cast stock in situ for cooling

Abstract

Hydraulic two-side rolling-cut shears, including: a front transport roller device, a rear transport roller device, a shear body, and a roller carrier. The front transport roller device includes a laser scriber, a magnetic alignment device, and a pinch roller device. The rear transport roller device includes a vertical guide roller. The laser scriber is disposed on the front end of the front transport roller device. The magnetic alignment device is disposed in the middle part of the front transport roller device. The pinch roller device is disposed on the rear end of the front transport roller device in front of the shear body. The roller carrier is disposed longitudinally in the middle of the shear body. The vertical guide roller is disposed on the rear transport roller device and behind the shear body.

IPC Classes  ?

• B23D 15/06 - Sheet shears
• B23D 15/14 - Shearing machines or shearing devices cutting by blades which move parallel to each other characterised by drives or gearings therefor actuated by fluid or gas pressure
• B23D 36/00 - Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock while the latter is travelling otherwise than in the direction of the cut
• B23K 26/38 - Removing material by boring or cutting

Abstract

A heavy-duty hydraulic rotary machine direction bilateral cutting machine for a metal sheet comprises a front transmission roller device and a rear transmission roller device. The cutting machine further comprises a line laser (1), magnetic center alignment device (2), entry single drive pinch roller device (3), main body (4) of the machine direction bilateral cutting machine for a metal sheet, middle support roller device (5) and exit vertical guide roller (6). The line laser (1) is disposed at the front end of the front transmission roller device, the magnetic center alignment device (2) is disposed at the middle of the front transmission roller device, the entry single drive pinch roller device (3) is disposed at the rear end of the front transmission roller device, the middle support roller device (5) is disposed in the machine direction at the middle of the main body (4) of the machine direction bilateral cutting machine for a metal sheet, and the exit vertical guide roller (6) is disposed on the rear transmission roller device and after the main body (4) of the machine direction bilateral cutting machine for a metal sheet. The present invention addresses primarily the technical problems of the low yield rate, poor quality, structural complexity and high costs of the existing bilateral cutting machines for a metal sheet.

IPC Classes  ?

• B23D 31/04 - Shearing machines or shearing devices covered by none or more than one of the groups Combinations of shearing machines for trimming stock combined with devices for shredding scrap
• B23D 33/00 - Accessories for shearing machines or shearing devices

Abstract

The present invention discloses a method for rolling a metal composite plate/strip, comprising the following steps: 1) selecting a metal base plate and a metal cladding plate, cleaning the surfaces of the base plate and the cladding plate to be composited until the metal matrixes are exposed; 2) sequentially laminating the base plate and the cladding plate to obtain a composite plate slab; 3) rolling the composite plate slab through a composite rough rolling mill having a corrugated roll to obtain a composite plate having a corrugated mating surface on its composite surface; and 4) flattening the composite plate having a complete corrugated cladding plate by a composite finish rolling mill to a desirable thickness to obtain a composite plate/strip.

IPC Classes  ?

• B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
• B21D 13/04 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by rolling
• B21H 8/00 - Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects

Abstract

A method for preparing a metal composite plate by rolling includes the following steps: 1) rolling composite surfaces of a base plate and a cladding plate, respectively, to obtain the base plate corrugation and the cladding plate corrugation for mating with each other; 2) cleaning the composite surfaces of the base plate and the cladding plate to expose the metal matrixes of the base plate and the cladding plate; 3) laminating the base plate and the cladding plate sequentially so that the base plate corrugation on the base plate and cladding plate corrugation on the cladding plate mate with each other, compacting, and performing welding sealing treatment to the base plate and the cladding plate to obtain a composite plate slab; and 4) rolling the composite plate slab after inspection by using a compositing machine to a desirable thickness, to obtain a metal composite plate.

IPC Classes  ?

• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
• B21H 8/00 - Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects
• B23K 9/18 - Submerged-arc welding
• B21D 13/04 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by rolling
• B23K 11/11 - Spot welding
• B23K 9/025 - Seam weldingBacking meansInserts for rectilinear seams

Abstract

Disclosed is a single hydraulic cylinder driven roll-cutting type plate shearing machine, belonging to the field of metal plate shearing machines, which comprises a rack, a shearing mechanism, a connecting rod mechanism and a horizontally arranged hydraulic cylinder, wherein the horizontally arranged hydraulic cylinder (7) is mounted on a hydraulic cylinder rack (8) by means of a pin shaft in a hinged manner, the top end of a piston rod of the hydraulic cylinder (7) is respectively hinged to an upper beam connecting rod (2), an upper cutter holder connecting rod (6) and one end of a middle synchronous connecting rod (3) on the side of the hydraulic cylinder rack (8) by means of a pin shaft, the other end of the synchronous connecting rod (3) is respectively hinged to an upper beam connecting rod (4) and an upper cutter holder connecting rod (5) on the side of a guiding rod rack (9) by means of a pin shaft, the other end of each of the upper beam connecting rods (2), (4) is respectively hinged to an upper beam (1) by means of a pin shaft, the other end of each of the upper cutter holder connecting rods (5), (6) is hinged to an upper cutter holder (11) by means of a pin shaft, one end of a guiding rod (10) is hinged to the upper cutter holder (11), and the other end thereof is hinged to the guiding rod rack (9).

IPC Classes  ?

• B23D 31/00 - Shearing machines or shearing devices covered by none or more than one of the groups Combinations of shearing machines

Abstract

A method for rolling a metal compound plate strip, comprising the following steps: 1) selecting a metal base plate and a metal compound plate and cleaning a surface for compounding of the base plate and that the compound plate until the metal bases are exposed; 2) sequentially stacking the base plate and the compound plate for slab manufacturing to acquire a compound slab; 3) passing the compound slab through a compound rough rolling mill fitted with corrugated rollers to produce by rolling a compound plate provided on a compound surface thereof with a corrugated meshing surface; and, 4) passing the compound plate produced by the rough rolling mill and provided with an overall corrugated compound plate through a compound fine rolling mill for flat rolling until a desired thickness, thus acquiring a compound plate strip. The method utilizes binding of the rough-rolled overall corrugated compound plate and the base board meshing surface to solve a difference in plastic deformation of metals due to a difference in deformation resistances of heterologous metals, thus increasing the binding force between metal layers, and substantively improving compound effects.

IPC Classes  ?

• B21B 1/24 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process

Abstract

A method for manufacturing a metal compound plate strip by rolling. The compounding surfaces of a base plate (1, 5, 8, 11, 14, and 14') and a compound plate (2, 6, 9, 9', 12, 12', 15, and 15') are corrugated using rolling, the base plate corrugation and the compound plate corrugation being fitting with one another; the compounding surface of the base plate and that of the compound plate are cleaned; the base plate and the compound plate are stacked to allow the base plate corrugation on the base plate and the compound plate corrugation on the compound plate to mesh with one another; a compound slab is produced after pressing, welding, and sealing processes; and, the compound slab is rolled to a desired thickness to produce a compound plate strip. The engagement force between the base plate corrugation and the compound plate corrugation is utilized to increase the binding force between the base plate and the compound plate, thus increasing compounding rate between plates of dissimilar metals.

IPC Classes  ?

• B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets