A foldable super-lifting device, comprising a super-lifting boom (1), and a super-lifting pedestal and a super-lifting winch (2) which are provided at two ends of the super-lifting boom (1). The super-lifting boom (1) comprises a fixed boom (101) connected to the super-lifting pedestal, and a folding boom (102) connected to the super-lifting winch (2). The folding boom (102) is connected to the fixed boom (101) by means of a rotating shaft. The length of the super-lifting boom (1) is adjusted by means of unfolding and folding. Also disclosed are a crane comprising the foldable super-lifting device, and a multi-angle tensioning control system and method. By guiding the foldable super-lifting device for tensioning before hoisting operation, and using different two-stage unfolding schemes on the basis of main boom lengths and combinations, the relationship of a super-lifting length with unfolding angles and the main boom lengths is optimized, so that the stress state of main booms can be improved to the greatest extent, the strength and rigidity of the main booms are increased, and product performance is improved.
B66C 23/76 - Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
2.
TRAVELING CONTROL METHOD FOR WHEELED VEHICLE, AND WHEELED VEHICLE
Provided in the present disclosure are a traveling control method for a wheeled vehicle, and a wheeled vehicle. The traveling control method for a wheeled vehicle comprises the following steps: acquiring the current operating state of a differential, wherein the current operating state comprises a disengaged state and an engaged state; acquiring a request instruction for controlling the differential, wherein the request instruction comprises a disengagement instruction and an engagement instruction; and according to the current operating state of the differential and the request instruction, controlling a steering mechanism to act. In the traveling control method of the present disclosure, when steering control is performed on a steering mechanism, the current operating state of a differential and a request instruction for the differential are comprehensively taken into consideration, for example, when the differential is in an engaged state, the steering mechanism needs to be controlled to steer within a limited range at this time, so as to ameliorate the problems of abnormal tire damage, etc. caused by steering when in an engaged state of a differential, thereby improving the reliability of a vehicle.
The present invention relates to a hybrid-power control method and system, and a crane. The control method comprises: reading an opening-degree signal of an operation handle, and calculating the displacement of an oil pump, which displacement is required by an operation; reading information of a pressure sensor at an oil outlet of the oil pump to obtain the pressure of a hydraulic system, and by means of the displacement of the oil pump, calculating a torque required by the operation of a crane; reading an opening-degree signal of an accelerator, and calculating a rotation speed required by the operation, so as to obtain a target rotation speed of an engine and a target rotation speed of an electric motor; reading information of the electric quantity and charging and discharging operation power of a power battery, and outputting charging and discharging power requirements of the power battery according to electric balance requirements of a vehicle; and by means of integrating the information, calculating an optimal torque actually emitted by the engine, and adjusting the engine to operate within an optimal economic interval. The hybrid-power control method and system, and the crane of the present invention can effectively improve the operation stability and economical efficiency of a hybrid power system. Products that balance stability, economical efficiency and environmental protection requirements can be created for crane users.
Disclosed in the present invention is a boom, comprising a front end boom, the front end boom being provided with multiple groups of front boom sections, and adjacent front boom sections being connected by a telescopic oil cylinder; a rear end boom, the rear end boom being provided with multiple groups of rear boom sections, the front and rear boom sections as well as adjacent rear boom sections being both connected by a pulley structure; and a locking structure (A), which is provided at the tail part of the boom sleeve of a rear boom section at the tail end. The locking structure of the boom has a compact structure and occupies a small overall space, thus effectively increasing the cross-sectional size of the boom sleeve of a six-section boom, and improving the bearing capacity of the boom. Further disclosed in the present invention is a jib crane.
The invention discloses a steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a mid-position locking cylinder, a first power steering cylinder, a second power steering cylinder, a first steering linkage and a second steering linkage; one end of the mid-position locking cylinder is connected with the steering rocker arm unit, and the other end is hinged to a frame; one ends of the first power steering cylinder and the second power steering cylinder are connected with the steering rocker arm unit, and the other ends are hinged to the frame; and one ends of the first steering linkage and the second steering linkage are connected with the steering rocker arm unit, the other ends are connected with knuckle arms, and the knuckle arm is fixed on a wheel rim.
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B60G 11/26 - Resilient suspensions characterised by arrangement, location, or kind of springs having fluid springs only, e.g. hydropneumatic springs
B60G 11/27 - Resilient suspensions characterised by arrangement, location, or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
A multi-pulley telescopic mechanism, comprising a telescopic mechanism (24), a first extension boom pulling rope (19), a second extension boom pulling rope (18), a third extension boom pulling rope (17), a basic boom (1), a second boom section (2), a third boom section (3), a fourth boom section (6) and a fifth boom section (10), the second boom section (2), the third boom section (3), the fourth boom section (6) and the fifth boom section (10) being sequentially sleeved in the basic boom. Also disclosed is a crane, the crane comprising said multi-pulley telescopic mechanism. By providing the multi-pulley telescopic mechanism and the crane, the technical problems of high cost, low telescopic efficiency, and severe limitation on lifting capacity of five-boom section cranes in the prior art are solved.
The present invention relates to the technical field of engineering machinery. Disclosed are an extended-range hybrid power system and a control method therefor, and a crane. The extended-range hybrid power system comprises a power battery, an all-in-one controller, a first electric motor, a second electric motor and an engine, wherein the first electric motor is connected to a lower-part driving mechanism; the engine is connected to the second electric motor, and the second electric motor is connected to an upper-part operation mechanism; and the power battery, the first electric motor and the second electric motor are all connected to the all-in-one controller, and the all-in-one controller is connected to an external power source. In the present invention, an upper-part operation may be carried out in one of a plug-in operating mode, a pure electric operating mode, a pure fuel operating mode and a hybrid operating mode, and lower-part driving may be carried out in a pure electric driving mode or an extended-range driving mode, which is conducive to improving the engine operating efficiency, reducing fuel consumption and exhaust emissions, and achieving good environmental protection performance.
A gasoline-electric hybrid operating system of a truck crane, comprising: an engine (1), an all-in-one controller (2), a power battery (3), a battery management system (BMS) (4), and a range-extending mechanism (5). The power battery (3) is connected to the BMS (4); the BMS (4) is connected to the all-in-one controller (2); the all-in-one controller (2) is connected to a central slewing unit high-voltage slip ring (6); and the central slewing unit high-voltage slip ring (6) is connected to a first motor controller (7). The range-extending mechanism (5) comprises an ISG motor (501) and a second motor controller (502). When an external power supply is provided, the truck crane provides electric energy for a superstructure operation motor (8) by means of the external power supply; and when no external power supply is provided, the engine (1) drives the ISG motor (501) to generate power. Also disclosed is a crane. The problems that in working conditions of operations of existing truck cranes, the energy utilization efficiency of engines is low, and a large amount of pollutants are emitted during the operations are solved.
B66C 13/12 - Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts or devices
B66C 13/20 - Control systems or devices for non-electric drives
B66C 13/22 - Control systems or devices for electric drives
B60L 50/62 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
A hydraulic steering system, comprising a steering pump and a plurality of digital steering cylinder assemblies Each digital steering cylinder assembly includes a steering cylinder and a digital hydraulic valve configured to selectively communicate a rodless cavity of the steering cylinder with one of the steering pump and a return oil circuit, and communicate a rod cavity of the steering cylinder with the other of the steering pump and the return oil circuit.A controller can be configured to emit a digital pulse signal to a motorand cause the digital hydraulic valve to move towards a first working position or a second working position andA mechanical feedback structure can be configured to be driven by a piston rod of the steering cylinder when the valve core of the digital hydraulic valve moves towards the first working position or the second working position, so as to drive the digital hydraulic valve to return to a neutral position. The system can improve the control precision and the response speed of the steering system.
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B62D 5/09 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
A steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a neutral position locking cylinder (18), a first steering cylinder (9), a second steering cylinder (11), a first steering pull rod (12), and a second steering pull rod (14); one end of the neutral position locking cylinder (18) is connected to the steering rocker arm unit, and the other end is used for being hinged to a vehicle frame (1); one end of each of the first steering cylinder (9) and the second steering cylinder (11) is respectively connected to the steering rocker arm unit, and the other end is used for being hinged to the vehicle frame (1); one end of each of the first steering pull rod (12) and the second steering pull rod (14) is respectively connected to the steering rocker arm unit, and the other end is connected to a steering knuckle arm (15); the steering knuckle arms (15) are used for being fixed on rims (4).
A steering mechanism and an independent suspension system. The steering mechanism comprises a steering rocker arm unit, a neutral position locking cylinder (18), a first steering cylinder (9), a second steering cylinder (11), a first steering pull rod (12), and a second steering pull rod (14); one end of the neutral position locking cylinder (18) is connected to the steering rocker arm unit, and the other end is used for being hinged to a vehicle frame (1); one end of each of the first steering cylinder (9) and the second steering cylinder (11) is respectively connected to the steering rocker arm unit, and the other end is used for being hinged to the vehicle frame (1); one end of each of the first steering pull rod (12) and the second steering pull rod (14) is respectively connected to the steering rocker arm unit, and the other end is connected to a steering knuckle arm (15); the steering knuckle arms (15) are used for being fixed on rims (4).
Disclosed are an auxiliary boom, a crane, a method for unfolding an auxiliary boom and a method for retracting an auxiliary boom. The auxiliary boom comprises an auxiliary boom body and a jackscrew mechanism. The auxiliary boom body comprises a connecting frame with a first connecting hole and a second connecting hole which are coaxially arranged. The jackscrew mechanism comprises a first shaft, a second shaft and a driving mechanism; the first shaft and the second shaft are both arranged between the first connecting hole and the second connecting hole and coaxial with the first connecting hole; the driving mechanism is in driving connection with the first shaft and the second shaft to drive the first shaft and the second shaft to protrude simultaneously and retract simultaneously. In which, when the first shaft is in a protruded state, the first shaft is inserted into the first connecting hole, and when the first shaft is in a retracted state, the first shaft leaves the first connecting hole; when the second shaft is in the protruded state, the second shaft is inserted into the second connecting hole, and when the second shaft is in the retracted state, the second shaft leaves the second connecting hole. The connecting frame of the auxiliary boom body of the auxiliary boom is cooperated with the first shaft and the second shaft of the jackscrew mechanism, and the auxiliary boom is mounted and dismounted through simultaneous extension and simultaneous retraction of the first shaft and the second shaft, so that the operation is very convenient. In addition, mounting and dismounting of the first shaft and the second shaft are realized by one operation, and the mounting efficiency is at least doubled.
A jib, a crane, a jib unfolding method, and a jib retraction method. The jib comprises a jib body (1) and a jackscrew mechanism (2); the jib body (1) comprises a connecting frame (11) provided with a first connecting hole (111) and a second connecting hole (112), the first and second connecting holes (111 and 112) being coaxially arranged. The jackscrew mechanism (2) comprises a first shaft (21), a second shaft (22), and a driving mechanism (23); the first shaft (21) and the second shaft (22) are both arranged between the first connecting hole (111) and the second connecting hole (112), and the first shaft (21) and the second shaft (22) are both coaxial with the first connecting hole (111); the driving mechanism (23) is connected to the first shaft (21) and the second shaft (22) in a driving manner, so as to drive the first shat (21) and the second shaft (22) to extend and retract simultaneously. When the first shaft (21) is in an extended state, the first shaft (21) is inserted into the first connecting hole (111), and when the first shaft (21) is in a retracted state, the first shaft (21) is separated from the first connecting hole (111); when the second shaft (22) is in an extended state, the second shaft (22) is inserted into the second connecting hole (112), and when the second shaft (22) is in a retracted state, the second shaft (22) is separated from the second connecting hole (112). According to the jib, the connecting frame of the jib body works in conjunction with the first shaft and the second shaft of the jackscrew mechanism, and the first shaft and the second shaft extend and retract simultaneously, so that the mounting and removal of the jib are implemented, and the operation is convenient; moreover, the mounting and removal of the first shaft and the second shaft can be implemented by only one operation, and thus the mounting efficiency is at least doubled.
A load sensing pump system, a hydraulic control system, and construction machinery. The load sensing pump system comprises: a variable displacement pump (1); a fixed displacement pump (2), driven by a same drive mechanism as the variable displacement pump (1); a variable displacement control mechanism, used for controlling the variable displacement pump (1); a control oil circuit; and a pressure valve (3), configured to make, by means of the control oil circuit, part of output pressure of the fixed displacement pump (2) act on a control end of the variable displacement control mechanism, so as to increase the maximum displacement of the variable displacement pump (1) when the driving rotation speed of the drive mechanism increases.
F15B 11/04 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the speed
A hydraulic steering system, comprising a steering pump and a plurality of digital steering cylinder assemblies. Each digital steering cylinder assemblies includes: a steering cylinder; a digital hydraulic valve, wherein a valve core thereof is driven by a motor?and the digital hydraulic valve is configured to selectively communicate a rodless cavity of the steering cylinder with one of the steering pump and a return oil circuit, and communicate a rod cavity of the steering cylinder with the other of the steering pump and the return oil circuit; a controller configured to emit a digital pulse signal to the motor, and cause the digital hydraulic valve to move towards a first working position or a second working position; and a mechanical feedback structure connected between the steering cylinder and the valve core of the digital hydraulic valve, and configured to be driven by a piston rod of the steering cylinder when the valve core of the digital hydraulic valve moves towards the first working position or the second working position, so as to drive the digital hydraulic valve to return to a neutral position. The system can improve the control precision and the response speed of the steering system.
B62D 5/08 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of valve used
B62D 5/09 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
A hydraulic steering system, comprising a steering pump (1) and a plurality of digital steering cylinder components (2). Each digital steering cylinder component (2) comprises: a steering cylinder (21); a digital hydraulic valve (22), wherein a valve core thereof is driven by a motor (23), and the digital hydraulic valve (22) is configured to selectively enable a rodless cavity of the steering cylinder to be in communication with one of a steering valve and an oil return oilway, and enable a rod cavity of the steering cylinder to be in communication with the other one of the steering valve and the oil return oilway; a controller configured to send a digital pulse signal to the motor, so that the digital hydraulic valve moves to a first working position or a second working position; and a mechanical feedback structure connected between the steering cylinder and the valve core of the digital hydraulic valve, and configured to be driven by a piston rod of the steering cylinder when the valve core of the digital hydraulic valve moves to the first working position or the second working position, so as to drive the digital hydraulic valve to return to a neutral position. The system can improve the control precision and the response speed of the steering system.
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B62D 5/09 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
17.
Operating method of a wind power jib of a crane and crane
The present disclosure discloses an operating method of a wind power jib of a crane and a crane, and relates to the field of engineering machinery. The method includes the following steps: rotatably connecting a main boom and a wind power jib; overturning the wind power jib to a first preset position by using a traction means of the crane; contacting a cushioning member with the wind power jib provided at the first preset position; further drawing the wind power jib to overturn to a second preset position; releasing the traction means, such that the wind power jib overturns automatically under the effect of self gravity and a cushioning member until the wind power jib is overturned in position.
B66C 23/68 - Jibs foldable or otherwise adjustable in configuration
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
18.
CONTROL METHOD AND SYSTEM FOR POWER MATCHING OF CRANE, AND CRANE
The present disclosure relates to a control method and system for power matching of a crane, and a crane. The control method comprises: outputting, according to an angle of an operating handle, a control current which is proportional to the angle of the operating handle, so as to control the openness of a multi-way valve; calculating the required power of a hydraulic pump according to the control current, the position of an accelerator pedal, and an outlet pressure of the hydraulic pump; according to a preset optimal working curve of an engine, obtaining an optimal rotation speed, corresponding to the required power, of the engine, so as to minimize the oil consumption of the engine; and controlling the engine to operate at the optimal rotation speed.
F02D 31/00 - Use of non-electrical speed-sensing governors to control combustion engines, not otherwise provided for
F02D 29/04 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
B66C 13/20 - Control systems or devices for non-electric drives
A hydraulic system, which comprises: an accumulator (7), a hydraulic cylinder (6) including a rod cavity (62) and a rodless cavity (61), a hydraulic pump (5), an oil tank (4), a first valve assembly (1) and a second valve assembly (2). The first valve assembly comprises a first port (f) connected to the rodless cavity, a second working port (d) connected to the rod cavity, a third port (a) connected to the hydraulic pump, and a fourth working port (c) connected to the oil tank, and has a first working state in which the first working port and the third working port are connected; the second valve assembly comprises a first port (g) connected to the rodless cavity, a second working port (h) connected to the rod cavity, a third port (i) connected to the accumulator, and has a first control state in which the first working port, the second working port and the third working port are all connected, and the hydraulic system can improve the energy recovery efficiency of the accumulator.
Disclosed are a crane energy-saving control method and a crane energy-saving control system. The crane energy-saving control method is: a controller calculating a speed requirement of a user according to a handle signal and a signal of an electronic accelerator pedal, checking the pressure of a pump outlet, and then being able to calculate a power requirement corresponding to this speed; according to a fuel characteristic of an engine and an efficiency characteristic of the pump, being able to calculate a load torque and a rotation speed of the engine with the lowest fuel consumption rate at this power; and the controller controlling the rotation speed of the engine and a displacement of the pump according to the calculation result and the pressure of the pump, such that under the condition of meeting the requirements of the user, the engine works under a working condition with the optimal fuel economy. The energy-saving control method retains a handle and an accelerator pedal as in a traditional crane, and a controller can automatically match a displacement of a pump and a rotation speed of an engine, such that the aim of saving energy is achieved.
F02D 29/04 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
F02D 11/02 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
The present disclosure provides a lifting device comprising: a telescopic boom, comprising a basic section, at least one primary telescopic section and at least one secondary telescopic section; a telescopic control mechanism, comprising a primary telescopic drive mechanism that controls synchronous telescoping of the at least one primary telescopic section and a secondary telescopic drive mechanism that controls synchronous telescoping of the at least one secondary telescopic section; a torque limiter, comprising a first length sensor and a second length sensor, wherein a first sensor body and a telescopic end of a first length measuring cable of the first length sensor are respectively connected to tails of adjacent two section in the basic section and the at least one primary telescopic section; and a second sensor body and a telescopic end of a second length measuring cable of the second length sensor are respectively connected to tails of adjacent two section in the primary telescopic section adjacent to the at least one secondary telescopic section and the at least one secondary telescopic section. The lifting device of the present disclosure can reduce the length of the length measuring cable of a length sensor and thus reduce its volume and weight.
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
F16D 43/20 - Internally controlled automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
B66F 9/065 - Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
The present disclosure provides a lifting device comprising: a telescopic boom, comprising a basic section, at least one primary telescopic section and at least one secondary telescopic section; a telescopic control mechanism, comprising a primary telescopic drive mechanism that controls synchronous telescoping of the at least one primary telescopic section and a secondary telescopic drive mechanism that controls synchronous telescoping of the at least one secondary telescopic section; a torque limiter, comprising a first length sensor and a second length sensor, wherein a first sensor body and a telescopic end of a first length measuring cable of the first length sensor are respectively connected to tails of adjacent two section in the basic section and the at least one primary telescopic section; and a second sensor body and a telescopic end of a second length measuring cable of the second length sensor are respectively connected to tails of adjacent two section in the primary telescopic section adjacent to the at least one secondary telescopic section and the at least one secondary telescopic section. The lifting device of the present disclosure can reduce the length of the length measuring cable of a length sensor and thus reduce its volume and weight.
A rotation control valve group, a rotation control system and a crane. The rotation control valve group (3) has an oil inlet opening (P), an oil discharge opening (T), a first working oil opening (A) and a second working oil opening (B), and has a rotation control state, a first rotation stop control state and a second rotation stop control state. The rotation control valve group (3) comprises a shuttle valve (36), an overflow valve (33), a rotation switch valve (31) and a switch control valve (35), and in the rotation control state and the first rotation stop control state, the switch control valve (35) controls a switching oil passage between the oil inlet opening (P) and an oil outlet opening of the shuttle valve (36) to be disconnected; in the second rotation stop control state, the switch control valve (35) controls the switching oil passage between the oil inlet opening (P) and the oil outlet opening of the shuttle valve (36) to be communicated.
Provided are a method and a system for controlling operation of a crane, and a crane. The method includes: scanning dynamically, by a 3D imaging device, a plurality of objects within an operating range of the crane to obtain 3D spatial information of each of the plurality of objects, wherein the plurality of objects includes the crane and an obstacle, the 3D spatial information includes 3D spatial coordinates; determining a distance from the obstacle to a preset position of the crane based on the 3D spatial coordinates of the crane and the obstacle; judging whether the distance from the obstacle to the preset position is less than a preset distance corresponding to the preset position; and performing an alarm if the distance from the obstacle to the preset position is less than the preset distance corresponding to the preset position.
The present disclosure relates to the technical field of cranes, and in particular to a crane hydraulic control system and a crane. The crane hydraulic control system of the present disclosure includes a prime mover, an execution control mechanism, a hydraulic baking device, a running energy recycling device and an operation energy recycling device. By means of cooperation among the operation energy recycling device, the energy recovery device and the hydraulic energy conversion device, kinetic energy in a driving braking process of the crane and the potential energy in a load lowering process are respectively converted into hydraulic energy for recovery, storage and reuse, therefore, the present disclosure can achieve the recovery of the superstructure energy and the lower vehicle energy of the crane so as to effectively reduce the energy waste.
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
B66C 13/20 - Control systems or devices for non-electric drives
F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
The present application discloses a steering control system, a method and a crane. The steering control system includes: one or more first angle sensors, one or more second angle sensors, and a steering controller; each of the first angle sensors collects an actual steering angle of a wheel corresponding to a mechanical steering axle as a first steering angle; each of the second angle sensors an actual steering angle of a wheel corresponding to an electrically controlled steering axle as a second steering angle; the steering controller obtains a theoretical steering angle of the wheel corresponding to the electrically controlled steering axle in a corresponding travel mode according to the first steering angle, and compares the second steering angle with the theoretical steering angle, to control the wheel corresponding to the electrically controlled steering axle to steer according to a difference therebetween.
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
27.
Active steering system for hoisting machinery and hoisting machinery
A hoisting machinery comprises a steering wheel and wheels, wherein the active steering system comprises an active steering device, a hydraulic power steering gear and a hydraulic power steering system, the active steering device is arranged between the steering wheel and a pitman arm of the hoisting machinery, so as to adjust a steering ratio of the steering wheel to the pitman arm according to a driving cycle of the hoisting machinery, and the hydraulic power steering gear is arranged between the steering wheel and the pitman arm, so as to control the hydraulic power steering system to drive steering of the wheels. In the active steering system of the present invention, a hydraulic power steering system is adopted to drive steering of wheels, which can improve capability of overcoming steering resistance and can be applicable to multiple chassis of cranes, thereby enlarging application ranges of the active steering system.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
28.
SINGLE-CYLINDER LATCH-TYPE TELESCOPIC CYLINDER, TELESCOPIC BOOM, AND CONSTRUCTION MACHINERY APPARATUS
Provided is a single-cylinder latch-type telescopic cylinder, comprising a piston rod (1) and a cylinder barrel (2). The piston rod (1) or the cylinder barrel (2) is provided with a first cylinder head (3), a second cylinder head (6), a cylinder pin driving mechanism and a dovetail groove driving mechanism. A cylinder pin (5) of the first cylinder head (3) and a cylinder pin (8) of the second cylinder head (6) are both driven by the cylinder pin driving mechanism. A dovetail groove (4) of the first cylinder head (3) and a dovetail groove (7) of the second cylinder head (6) are both driven by the dovetail groove driving mechanism. According to the single-cylinder latch-type telescopic cylinder, the cylinder pin (5) of the first cylinder head (3) and the cylinder pin (8) of the second cylinder head (6) are both driven by the cylinder pin driving mechanism, and the dovetail groove (4) of the first cylinder head (3) and the dovetail groove (7) of the second cylinder head (6) are both driven by the dovetail groove driving mechanism, so as to achieve the motion synchronization of the cylinder pins and the motion synchronization of the dovetail grooves and reduce the number of driving components and sensors, thereby reducing the machining cost of the telescopic cylinder and also improving the reliability and the maintainability of the telescopic cylinder. A telescopic boom comprising the single-cylinder latch-type telescopic cylinder is provided. A construction machinery apparatus comprising the telescopic boom is also provided.
F15B 15/16 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
B66C 23/693 - Jibs telescopic while in use extensible by fluid pressure
29.
CONTROL SYSTEM OF WHEELED CRANE, AND WHEELED CRANE
Provided are a control system of a wheeled crane, and a wheeled crane. The control system of a wheeled crane comprises an on-board hydraulic system, a hydraulic pump, an engine (1) and a hydraulic secondary element (3), the hydraulic secondary element (3) having a pump operating mode and a motor operating mode; when the on-board hydraulic system is in a rising state, the hydraulic secondary element (3) is in the pump operating mode and supplies, together with the hydraulic pump, oil for the on-board system; and when the on-board hydraulic system is in a falling state, the hydraulic secondary element (3) is in the motor operating mode, and the hydraulic secondary element (3) is driven by the oil return pressure of the on-board hydraulic system to rotate and assists the engine (1) in driving the operation of the hydraulic pump. The secondary element of the control system of a wheeled crane can be used, instead of a main pump (31), to supply oil for the on-board hydraulic system, and can also recover and utilize the gravitational potential energy when the on-board hydraulic system is in the falling state, thereby simplifying the structure of the control system and also better improving the energy-saving performance of the wheeled crane.
Disclosed are a special wind-power boom structure and a crane. The boom structure comprises a main boom (1), a boom head (2), a super-lift device (3), and a first connecting device, wherein the boom head (2) is connected to the main boom (1); one end of the super-lift device (3) is connected to one end, away from the boom head (2), of the main boom (1); and the other end of the super-lift device (3) is connected to an end part of one end, away from the main boom (1), of the boom head (2) by means of the first connecting device so as to enable the entirety of the special wind-power boom structure to be a hyperstatic structure. Therefore, the overall strength of the special wind-power boom structure is increased, the overall stability of the boom structure is better, and the lifting performance is greatly improved.
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
31.
OPERATION CONTROL METHOD AND SYSTEM FOR CRANE, AND CRANE
An operation control method and system for a crane and the crane, which relate to the technical field of engineering machinery. The method comprises : dynamically scanning objects within the operation range of a crane by using a 3D imaging device, so as to obtain three-dimensional spatial information of the objects, the objects comprising the crane and an obstacle, and the three-dimensional spatial information comprising three-dimensional spatial coordinates; determining a distance from the obstacle to a preset position of the crane according to the three-dimensional spatial coordinates of the crane and the three-dimensional spatial coordinates of the obstacle; determining whether the distance from the obstacle to the preset position is shorter than a preset distance corresponding to the preset position; and giving a warning if the distance from the obstacle to the preset position is shorter than the preset distance corresponding to the preset position. By means of the arrangement, the safety of the operation of the crane can be improved.
A crane hydraulic control system and a crane. The crane hydraulic control system comprises a prime mover (1), an execution control mechanism, a hydraulic energy conversion device (3), a running energy recycling device, and an operation energy recycling device. By means of cooperation among the operation energy recycling device, the running energy recycling device and the hydraulic energy conversion device (3), kinetic energy generated in a running brake process of the crane and potential energy generated in a heavy object drop process are respectively converted into hydraulic energy, and the hydraulic energy is recycled, stored and reused. By means of the structure, energy generated when the crane gets on a lorry and energy generated when the crane gets off from the lorry can be recycled, and energy waste is effectively reduced.
A lifting arm (3) of a crane and the crane provided with the same. The lifting arm (3) of the crane comprises multiple lifting arm sections (3) connected in sequence, pins (2) and a pin (2) insertion and pull mechanism. The pins (2) comprises a first pin (21) used for connecting the two adjacent lifting arms (3) or a second pin (22) used for connecting the corresponding lifting arm sections (3) and a drive oil cylinder (76) used for driving the lifting arm sections (3) to move. The pin (2) insertion and pull mechanism comprises connecting components (11, 12) and moving portions (51, 52). The connecting components (11, 12) can be connected to the pins (2) and can move in the extension direction of the pins (2) so as to insert and pull the pins (2). The moving portions (51, 52) can move along a path perpendicular to the pins (2) and are provided with slideways (61, 62) matching the connecting components (11, 12). The slideways (61, 62) are inclined relative to the path. The moving portions (51, 52) can move along the path so as to enable the connecting components (11, 12) to move along the slideways (61, 62), so that the connecting components (11, 12) move in the extension direction of the pins (2). The pin (2) insertion and pull mechanism guides, by means of the slideways (61, 62), the connecting components (11, 12) used for connecting the pins (2) to move, so as to insert and pull the pins (2). The pin (2) insertion and pull mechanism has a simple structure and is reliable in operation, and the problem in the prior art of clamping stagnation that is easy to happen during insertion and pull of the pins (2) of the lifting arms (3) is alleviated.
The present disclosure provides a method and a system for controlling operation ot a crane, and a crane, relating to the technical field of engineering machinery. The method includes: scanning dynamically, by a 3D imaging device, a plurality of objects witnin an operating range of the crane to obtain 3D spatial information of each of the plurality of objects, wherein the plurality of objects comprises the crane and an obstacle, and the 3D spatial information comprises 3D spatial coordinates; determining a distance from the obstacle to a preset position of the crane based on the 3D spatial coordinates of the crane and the obstacle; judging whether the distance from the obstacle to the preset position is less than a preset distance corresponding to the preset position; and performing an alarm if :he distance from the obstacle to the preset position is less than the preset distance corresponding to the preset position. The present disclosure can improve safety of operation of a crane.
A steering device (100), a suspension cylinder (111), a control system and method and a crane, which relate to the field of engineering machinery. The steering control system comprises a first angle sensor (301), a second angle sensor (302), and a steering controller (310, 610). The first angle sensor (301) collects a first steering angle of a wheel (51, 52) corresponding to a mechanical steering shaft (401, 402), and transmits the first steering angle to the steering controller (310). The second angle sensor (302) collects a second steering angle of a wheel (53, 54, 55, 56, 57) corresponding to an electric control steering shaft (403, 404, 405, 406, 407), and transmits the second steering angle to the steering controller (310, 610). The steering controller (310, 610) obtains a theoretical steering angle of the wheel (53, 54, 55, 56, 57) corresponding to the electric control steering shaft (403, 404, 405, 406, 407) in a corresponding running mode according to the first steering angle, compares the second steering angle with the theoretical steering angle, and controls, according to a difference between the second steering angle and the theoretical steering angle, the wheel (53, 54, 55, 56, 57) corresponding to the electric control steering shaft (403, 404, 405, 406, 407) to steer, until the difference between the second steering angle and the theoretical steering angle falls within a preset range. By means of the steering control system, the objective of controlling the steering of the wheels (51, 52, 53, 54, 55, 56, 57) is achieved.
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
A hydraulic cylinder, a hydraulic system, and a crane. The hydraulic cylinder comprises a cylinder body (1), a first piston (2), and a piston rod (3). The first piston (2) is disposed in the cylinder body (1), and can move in the axial direction of the cylinder body (1). One end of the piston rod (3) is connected to the first piston (2), and extends in the axial direction of the cylinder body (1). The cylinder body (1) is provided with a first cavity (5) located on one side of the first piston (2) back to the piston rod (3), the first cavity (5) can introduce and discharge a hydraulic fluid. The piston rod (3) is provided with a second cavity (6) extending in the axial direction of the cylinder body (1). The hydraulic cylinder also comprises a second piston (7) capable of moving along the second cavity (6). The second piston (7) is fixed relative to the cylinder body (1), and the second cavity (6) comprises an accommodating cavity (4) located on one side of the second piston (7), facing to the first piston (2). When the hydraulic fluid is introduced into the first cavity (5), the accommodating cavity (4) can discharge the hydraulic fluid; and when the first cavity (5) discharges the hydraulic fluid, the accommodating cavity (4) can introduce the hydraulic fluid. The technical solution in the present application alleviates the problem in the prior art of high variation of the hydraulic fluid in the hydraulic cylinder in the moving process of the piston rod (3).
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 11/08 - Servomotor systems without provision for follow-up action with only one servomotor
37.
STEEL WIRE ROPE TENSIONING DEVICE, TENSIONING METHOD, AND ENGINEERING MACHINERY
A steel wire rope tensioning device, tensioning method, and engineering machinery. The steel wire rope tensioning device (1) comprises a force applying portion and a tensioning portion. The tensioning portion is disposed on an extension path of a steel wire rope (2). The force applying portion is connected to the tensioning portion, and is used to provide, if a load is smaller than a predetermined value when the steel wire rope (2) is being wound, to the tensioning portion an external force in a reverse direction to the winding direction of the steel wire rope (2), thus providing a tensioning force to the steel wire rope (2). The steel wire rope tensioning device (1) of the present invention enables a steel wire rope (2) to be wound smoothly and tightly, and prevents the steel wire rope (2) on one layer from pulling in another layer when the steel wire rope (2) is loaded afterwards, thus eliminating pressure and abrasion between different layers of the steel wire rope (2) caused by the pulling-in problem, and increasing the service life of the steel wire rope (2). In addition, the present invention reduces vibration generated during load lowering of the steel wire rope (2), thus improving safety of engineering machinery.
B66D 1/50 - Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchorsWarping or mooring winch-cable tension control
An active steering system for use in hoisting machinery, and hoisting machinery, the hoisting machinery comprising a steering wheel (1) and vehicle wheels, the active steering system comprising an active steering apparatus (3), a hydraulic power steerer (6) and a hydraulic power steering system, the active steering apparatus (3) being disposed between the steering wheel (1) and a vertical steering arm (7) of the lifting machinery, so as to adjust a steering transmission ratio between the steering wheel (1) and the vertical steering arm (7) according to driving conditions of the lifting machinery, and the hydraulic power steerer (6) being disposed between the steering wheel (1) and the vertical steering arm (7), so as to control the hydraulic power steering system to drive the vehicle wheels to steer. The present invention uses a hydraulic power steering system to drive vehicle wheels to steer and hence can increase ability to overcome steering resistance, and is applicable to multiple types of crane chassis, increasing application scope of the active steering system.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
Disclosed are a wheeled chassis and a crane. The wheeled chassis comprises a suspension cylinder assembly (1), a steering mechanism (2), a frame (4), a wheel (31) and a steering knuckle (32). The suspension cylinder assembly (1) comprises a suspension cylinder (11), and a frame mounting base (12) and a steering knuckle mounting base (13) arranged on the suspension cylinder (11). The suspension cylinder (11) is connected to the frame (4) through the frame mounting base (12) and is rotated around an axis of the suspension cylinder (11) relative to the frame (4). The suspension cylinder (11) is connected to the steering knuckle (32) through the steering knuckle mounting base (13). The steering mechanism (2) is used for driving the suspension cylinder (11) to rotate so as to drive the steering knuckle (32) to rotate and further control the wheel (31) to steer. According to the present wheeled chassis, the suspension cylinder is arranged as rotating around the axis of the suspension cylinder relative to the frame, so that the steering mechanism can drive the suspension cylinder to rotate so as to drive the steering knuckle to rotate. The position of the steering mechanism in the wheeled chassis can be flexibly configured.
The present disclosure discloses an operating method of a wind power jib of a crane and a crane, and relates to the field of engineering machinery. The method includes the following steps: rotatably connecting a main boom and a wind power jib; overturning the wind power jib to a first preset position by using a traction means of the crane; contacting a cushioning member with the wind power jib provided at the first preset position; further drawing the wind power jib to overturn to a second preset position; releasing the traction means, such that the wind power jib overturns automatically under the effect of self gravity and a cushioning member until the wind power jib is overturned in position.
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
B66C 23/68 - Jibs foldable or otherwise adjustable in configuration
41.
OPERATING METHOD OF A WIND POWER JIB OF A CRANE AND CRANE
The present disclosure discloses an operating method of a wind power jib of a crane and a crane, and relates to the field of engineering machinery, in order to decrease time, labor and transition cost in the installation and removal process. The method includes the following steps: rotatably connecting a main boom and a wind power jib; overturning the wind power jib to a first preset position by using a traction means of the crane; contacting a cushioning member with the wind power jib provided at the first preset position; further drawing the wind power jib to overturn to a second preset position; releasing the traction means, such that the wind power jib overturns automatically under the effect of self gravity and a cushioning member until the wind power jib is overturned in position.
B66C 23/18 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes
F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
B66C 1/62 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
B66C 13/08 - Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack for depositing loads in desired attitudes or positions
42.
Cylinder head body, single cylinder bolt system and crane
The invention relates to a cylinder head body, a single cylinder bolt system and a crane, wherein, the cylinder head body comprises at least two branch bodies of cylinder head body, a cooperative positioning structure and a fixed connection structure are provided between two adjacent branch bodies of cylinder head body of the at least two branch bodies of cylinder head body, the branch body of cylinder head body has a cylindrical branch body structure, the cylindrical branch body structures of the at least two branch bodies of cylinder head body are cooperatively positioned by means of the cooperative positioning structure and are detachably connected by means of the fixed connection structure to form a barrel. The cylinder head body is composed of at least two branch bodies of cylinder head body in a dismountable way, which are cooperatively positioned and detachably connected by the cooperative positioning structure and the fixed connection structure, respectively, such that the cylinder head body may be dismounted into branch body structures during assembling, assembling manner thereof is not restricted by traditional assembling sequence, thereby improving the assembling efficiency and production efficiency. Moreover, the branch body structure of the cylinder had body is easy to dismount and maintain, which saves maintenance cost.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
F15B 15/16 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
Disclosed in the present invention are a lattice boom structure and a crane. The lattice boom structure comprises a connecting frame (1), a rotating frame (2), and a variable amplitude oil cylinder (3). The connecting frame (1) is rotationally connected to the rotating frame (2). One end of the variable amplitude oil cylinder (3) is rotationally connected to the connecting frame (1), the other end of the variable amplitude oil cylinder (3) is rotationally connected to the rotating frame (2), and the variable amplitude oil cylinder (3) bears a pressure. By means of the structure form of the pressure cylinder type lattice boom, the structures of the rotating frame and the connecting frame are changed, so that the variable amplitude oil cylinder can be disposed at the bottom and bears a pressure and does not bear a tensile force, and accordingly potential safety hazards caused by internal leakage of a hydraulic oil cylinder are avoided.
The present application relates to a switching valve, a switching hydraulic system, and a crane, in which the switching valve having an oil inlet and an oil outlet comprises at least two pairs of valve oil ports, a pair of cartridge valves provided between each pair of valve oil ports, and the oil inlet and the oil outlet are controlled such that the oil inlet and the oil outlet are capable of shifting between communications with the at least two pairs of valve oil ports. The switching valve switches on and off communication between the oil inlet and the oil outlet and the at least two pairs of valve oil ports by controlling opening or closing of the cartridge valves.
A wheeled crane and self-demounting and self-mounting methods for supporting legs thereof is disclosed. The wheeled crane includes a vehicle frame and auxiliary supports, and the auxiliary supports can enable the vehicle frame to keep balance. Since the wheeled crane has auxiliary supports, when the supporting legs are demounted or mounted, the auxiliary supports function as supporting legs, so that the supporting legs can be mounted and demounted by the operation part of the wheeled crane with no need of using an auxiliary crane, and thus the self-mounting and self-demounting of the supporting legs of the wheeled crane are realized.
B66C 23/78 - Supports, e.g. outriggers, for mobile cranes
B66C 23/34 - Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
46.
Mobile counterweight mechanism of a hoisting machine as well as a hoisting machine
The present application relates to a mobile counterweight mechanism of a hoisting machine, comprising a support portion, a drive portion and a counterweight which is articulated to said support portion by means of a first articulation portion, said drive portion connected between said support portion and the counterweight so that said counterweight turns over outwards about said first articulation portion relative to a center of rotation of said hoisting machine, so as to increase a distance between a center of gravity of said counterweight and a center of rotation of said hoisting machine. The present application also relates to a hoisting machine. The present application raises a movement distance of a mobile counterweight and improves the overall stability of a hoisting machine in a turnover manner.
B66C 23/76 - Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
B66C 23/78 - Supports, e.g. outriggers, for mobile cranes
47.
POWER TAKE-OFF CONTROL SYSTEM AND CONSTRUCTION VEHICLE
Provided are a power take-off control system and a construction vehicle, the power take-off control system comprising: a power take-off gas source (1), a power take-off cylinder (3), and a power take-off control valve (2) connected between the power take-off gas source (1) and the power take-off cylinder (3). The power take-off control system further comprises a brake valve (4, 5), the brake valve (4, 5) comprising a power take-off linkage air inlet (41, 51) and a power take-off linkage air outlet (42, 52). The brake valve (4, 5) and the power take-off control valve (2) are connected in series between the power take-off gas source (1) and the power take-off cylinder (3) via the respective power take-off linkage air inlet (41, 51) and the power take-off linkage air outlet (42, 52). The power take-off linkage air inlet (41, 51) is in communication with the power take-off linkage air outlet (42, 52) when the brake valve (4, 5) is in a parking braking state, and the power take-off linkage air inlet (41, 51) is disconnected from the power take-off linkage air outlet (42, 52) when the brake valve (4, 5) is in a parking brake-release state. The power take-off control system can take power off by the operation of the power take-off control valve (2) only when the brake valve (4, 5) is in the parking braking state, thus the safety of power take-off is improved.
A steering arm assembly includes a steering arm body, a first rotary connecting part and a second rotary connecting part. A first end and a second end of the steering arm body are fixedly connected with a first rocker arm and a second rocker arm, respectively. The first rotary connecting part and the second rotary connecting part are respectively connected with the first end and the second end of the steering arm body, and the steering arm body is configured to rotate relative to the first rotary connecting part and the second rotary connecting part. The steering arm body is able to be detachably located on a mounting bracket through the first rotary connecting part and the second rotary connecting part; and the first rotary connecting part and the second rotary connecting part respectively include a first shaft housing and a second shaft housing, which are engaged with a first mounting plate and a second mounting plate respectively.
B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
B62D 7/14 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
The present invention discloses a power transmission control method and device for a crane and the crane. The method includes: setting the maximum working displacement of a secondary element corresponding to each gear of the crane; determining the current gear state and specific gear of the crane; determining the working mode of the secondary element from the gear state, and setting the maximum allowable displacement of the secondary element as the maximum working displacement corresponding to the specific gear.
F15B 1/02 - Installations or systems with accumulators
B60K 6/12 - Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
F16H 61/02 - Control functions within change-speed- or reversing-gearings for conveying rotary motion characterised by the signals used
The present disclosure discloses a method and system for positioning an engineering machinery work object. The method comprises: a reference station collects in real time satellite positioning information as a reference station current measurement value D0, and transmits D0 to first and second mobile stations; the first mobile station and the second mobile station respectively collect in real time satellite positioning information as a first mobile station current measurement value D1 and a second mobile station current measurement value D2, and respectively perform dynamic differential processes on D0 and D1 and D0 and D2 to obtain relative coordinate information of the first mobile station and the second mobile station; a crane resolving unit determines the boom extension length, the boom pitch angle and boom rotating angle based on the relative coordinate information of the first mobile station and the second mobile station; based on the boom extension length, the boom pitch angle and the boom rotating angle, a crane controller controls the boom to move to a hoisting position of the object to hoist the object. The present disclosure can greatly increase the precision of positioning the work object, and can also automatically track the boom to avoid errors and risks resulting from visual adjustment.
A track hitching structure is for a wheeled crane and the wheeled crane, and includes a vehicle frame and a connecting cross beam. The first end of the connecting cross beam is connected with a track. The second end of the connecting cross beam is connected with the vehicle frame. The second end of the connecting cross beam is higher than the first end of the connecting cross beam. The vehicle frame is connected with the track by the connecting cross beam with one high end and one low end, so the long-distance force transfer from the track to the race of the vehicle frame can be handled, then the shortcomings of tedious structure, large size, large weight and the like of the connecting device caused by a horizontal connecting cross beam are avoided, and the reliability and the working performance of the entire crane are improved.
B62D 55/04 - Endless-track vehicles with tracks and alternative ground wheels, e.g. changeable from endless-track vehicle into wheeled vehicle and vice versa
B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
A method and a system for recovering and utilizing crane operating energy and a crane includes converting by a first hydraulic power means hydraulic energy generated by a hydraulic actuator into mechanical energy of a transmission shaft; driving, by the transmission shaft, a second hydraulic power means to rotate so as to convert the mechanical energy of the transmission shaft into mechanical energy of the second hydraulic power means; filling, by the second hydraulic power means, pressurized oil into an accumulator so as to convert the mechanical energy of the second hydraulic power means into hydraulic energy for storage.
Disclosed is a drive axle assembly for an engineering vehicle, comprising a left wheel (141), a right wheel (142), a live axle, a final drive (11) and a transfer case (12). The final drive (11) is drivingly connected to the left wheel (141) and the right wheel (142) via the live axle. The final drive (11) is drivingly connected to the transfer case (12), and a shell of the final drive is connected to a shell of the transfer case. The final drive (11) is fixedly connected to a frame (6) of the engineering vehicle. Also disclosed is an engineering vehicle comprising the drive axle assembly. The transfer case and the final drive based on the live axle are integrated into an integral structure, wherein same can not only save arrangement space and achieve more drive solutions, but also has a small unsprung mass, thereby reducing the impact on the vehicle and improving the handling stability of the vehicle.
B60K 17/04 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
B60K 17/344 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
54.
Combined counterweight hitching device and method thereof, and counterweight mounting structure
The present invention relates to a combined counterweight hitching device and method thereof, and a counterweight mounting structure. The combined counterweight hitching device is mounted on a turntable tail framework, wherein the combined counterweight hitching device includes a turntable tail framework bottom plate, a lifting oil cylinder, a lifting oil cylinder fixing seat and a hitching driving mechanism, the turntable tail framework bottom plate is fixed on the turntable tail framework, the lifting oil cylinder fixing seat is arranged on the upper surface of the turntable tail framework bottom plate and is hinged with the turntable tail framework bottom plate, the lifting oil cylinder is fixed at one end of the lifting oil cylinder fixing seat, the one end distal to a point on which the turntable tail framework bottom plate is hinged with the lifting oil cylinder fixing seat, a hitching platform is mounted at a piston rod end of the lifting oil cylinder, and the hitching driving mechanism is connected with the lifting oil cylinder fixing seat, and drives the lifting oil cylinder fixing seat to make the hitching platform enter a hitching platform groove on the counterweight to complete a hitching operation. By adopting the combined counterweight hitching device and method, and the counterweight mounting structure provided by the present invention, the mounting and demounting of the combined counterweight are more convenient, and the mounting space is smaller.
B66C 23/76 - Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
B66C 23/74 - Counterweights or supports for balancing lifting couples separate from jib
55.
DUAL-POWER DRIVE SYSTEM, ENGINEERING MACHINERY VEHICLE, AND CONTROL METHOD
A dual-power drive system, comprising a mechanical power drive subsystem and a hydraulic power drive subsystem which are respectively used for driving different axles, wherein when both power drive subsystems are enabled, the off-ground rotation speed of a wheel corresponding to the mechanical power drive subsystem is controlled not to be higher than the off-ground rotation speed of a wheel corresponding to the hydraulic power drive subsystem. The hydraulic power drive subsystem comprises: a hydraulic motor (6); a hydraulic pump mechanism; an on-off mechanism provided on a hydraulic circuit between the hydraulic pump mechanism and the hydraulic motor (6) for enabling or disabling the hydraulic oil supply to the hydraulic motor (6) by the hydraulic pump mechanism; and an overflow mechanism provided at an inlet of the hydraulic motor (6) for implementing an overflowing function of excess hydraulic oil at the inlet position of the hydraulic motor (6). Also provided are an engineering machinery vehicle comprising the dual-power drive system and a control method for the dual-power drive system. The dual-power drive system is capable of supplying drive power when non-rigid connection is utilized between axles driven by different power drive systems.
F16H 47/06 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
B60K 6/00 - Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
56.
SPEED REDUCER, HYDRAULIC DRIVE SYSTEM, AND DUAL-POWER DRIVE SYSTEM
A speed reducer, a hydraulic drive system, and a dual-power drive system. The speed reducer (7) comprises a first shaft (73), a second shaft (74), and a clutch means, wherein the clutch means comprises a pneumatic control unit (1) and a transmission unit (2); the transmission unit (2) is connected to the first shaft (73); the pneumatic control unit (1) provides air pressure to drive the transmission unit (2) to carry out a reciprocating motion, so that the first shaft (73) and the second shaft (74) can be connected and disconnected. When the first shaft (73) and the second shaft (74) are connected, the speed reducer (7) can amplify drive torque provided by a hydraulic motor (6) and transmit the amplified drive torque to an axle (9); by amplifying the drive torque, power of the hydraulic drive system can be equal to that of a mechanical drive system, and the drive performance of the hydraulic drive system is improved. When the first shaft (73) and the second shaft (74) are disconnected, power transmission between the hydraulic motor (6) and the axle (9) can be disconnected, and the hydraulic drive system is utilized selectively.
The present invention relates to a steering system and an independent suspension wheel-type heavy vehicle. The steering system comprises a steering mechanism for providing a steering force to wheels and a steering hydraulic assisting system for providing a steering assisting force overcoming a steering resistance moment from the ground to the wheels. According to the invention, by providing the steering mechanism for providing a steering force to wheels and by providing the steering hydraulic assisting system for providing a steering assisting force overcoming a steering resistance moment from the ground to the wheels, the steering resistance moment from the ground can be effectively overcome, and the vehicle is offered the steering capability for various places, as compared with a steering system only depending on the torque output by a steering gear or only depending on the torque output by the steering gear and a steering assisting follower.
B62D 7/14 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B62D 5/065 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
B62D 5/08 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of valve used
B62D 5/26 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for pivoted axles
58.
Telescopic device of single-cylinder latch type and crane
The present invention relates to a telescopic device of single-cylinder latch type and a crane. The telescopic device of single-cylinder latch type is applied to a telescopic boom system and includes: a telescopic cylinder, for driving telescopic boom sections of the telescopic boom system to execute a telescopic action relative to a basic boom section; double boom pin structures, arranged on both sides of the tails of the telescopic boom sections to lock and unlock the telescopic boom sections; an boom pin pulling and plugging mechanism, arranged on the cylinder barrel of the telescopic cylinder to execute pulling and plugging operations on the double boom pin structures; and a cylinder pin structure and a cylinder pin cylinder, both arranged on the cylinder barrel of the telescopic cylinder and to lock and unlock the cylinder barrel of the telescopic cylinder and the telescopic boom sections. In the present invention, the double boom pin structures are arranged on both sides of the tails of the telescopic boom sections, compared with the existing upper boom pin solution, the double boom pin structures in the present invention are arranged on both sides of the telescopic boom sections, so that the stress is more uniform compared with a structure which is singly arranged on the upper side of a telescopic boom, and the influence of flexural deformation of a telescopic boom on the position of a pin hole and the stress of an boom pin is reduced.
An independent suspension system includes two suspension oil cylinders, respectively arranged between wheels at two sides and a frame: and a steering mechanism, configured to be driven by a steering booster oil cylinder to drive the wheels at two sides to turn. The independent system also includes two swing links arranged corresponding to the wheels at two sides, an end at one side of each of the swing links is hinged to a wheel hub of the wheel at the corresponding side via a spherical hinge, and an end at another side of each of the swing links is hinged to a fixing member fixed below a main speed reducer via two spherical hinges respectively along a fore-and-aft direction. A crane having the independent suspension system is further provided.
B60G 13/08 - Resilient suspensions characterised by arrangement, location, or type of vibration-dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
B60G 15/12 - Resilient suspensions characterised by arrangement, location, or type of combined spring and vibration- damper, e.g. telescopic type having fluid spring and fluid damper
B60G 21/05 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
B60G 13/00 - Resilient suspensions characterised by arrangement, location, or type of vibration-dampers
B60G 3/20 - Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
B60G 3/06 - Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially transverse to the longitudinal axis of the vehicle the arm being rigid
B60G 11/26 - Resilient suspensions characterised by arrangement, location, or kind of springs having fluid springs only, e.g. hydropneumatic springs
B62D 7/08 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle
B62D 7/14 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B66C 9/00 - Travelling gear incorporated in, or fitted to, trolleys or cranes
60.
Apparatus and method for detecting and protecting telescopic oil cylinder of crane
An apparatus for a crane comprises a large-cavity pressure sensor, a small-cavity pressure sensor, a controller, a telescopic oil cylinder, and a telescopic oil cylinder regulator. The large-cavity pressure sensor can measure the oil pressure in a large cavity of the telescopic oil cylinder. The small cavity pressure sensor can measure the oil pressure in a small cavity of the telescopic oil cylinder. The controller can control an output electrical signal according to a large-cavity oil pressure fed back by the large-cavity pressure sensor and a small-cavity oil pressure fed back by the small-cavity pressure sensor, and, by means of the electrical signal, control a change of the amount of hydraulic oil flowing into and out of the large cavity and the small cavity of the telescopic oil cylinder so as to regulate the oil pressures in the large cavity and the small cavity.
F15B 11/08 - Servomotor systems without provision for follow-up action with only one servomotor
F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
61.
CYLINDER HEAD BODY, SINGLE CYLINDER BOLT SYSTEM AND CRANE
The invention relates to a cylinder head body, a single cylinder bolt system and a crane, wherein, the cylinder head body comprises at least two branch bodies of cylinder head body, a cooperative positioning structure and a fixed connection structure are provided between two adjacent branch bodies of cylinder head body of the at least two branch bodies of cylinder head body, the branch body of cylinder head body has a cylindrical branch body structure, the cylindrical branch body structures of the at least two branch bodies of cylinder head body are cooperatively positioned by means of the cooperative positioning structure and are detachably connected by means of the fixed connection structure to form a barrel. The cylinder head body is composed of at least two branch bodies of cylinder head body in a dismountable way, which are cooperatively positioned and detachably connected by the cooperative positioning structure and the fixed connection structure, respectively, such that the cylinder head body may be dismounted into branch body structures during assembling, assembling manner thereof is not restricted by traditional assembling sequence, thereby improving the assembling efficiency and production efficiency. Moreover, the branch body structure of the cylinder head body is easy to dismount and maintain, which saves maintenance cost.
A switching valve, switching hydraulic system, and crane. The switching valve has a working oil inlet (P) and a working oil return port (T), comprising at least two sets of valve oil ports in pair. Cartridge valves in pair are provided between each set of valve oil ports in pair and the working oil inlet (P) and provided between each set of valve oil ports in pair and the working oil return port (T). The cartridge valves are controlled to be open or closed to enable the working oil inlet (P) and the working oil return port (T) to be switched between communications with the at least two sets of valve oil ports in pair. By controlling the cartridge valves to be open or closed, the switching valve enables or disables the communication between the working oil inlet (P) and the at least two sets of valve oil ports in pair and the communication between the working oil return port (T) and the at least two sets of valve oil ports in pair, stably enabling a hydraulic pump system to switch between communications with at least two closed systems, reducing the number of pumps in a hydraulic system, greatly reducing cost of a hydraulic system and total vehicle weight, and having a higher reliability.
The present application relates to a switching valve, a switching hydraulic system and a crane, in which the switching valve having an oil inlet and an oil outlet, comprises at least two pairs of valve oil ports, a pair of cartridge valves provided between each pair of valve oil ports, and the oil inlet and the oil outlet are controlled such that the oil inlet and the oil outlet are capable of shifting between communications with the at least two pairs of valve oil ports. The switching valve switches on and off communication between the oil inlet and the oil outlet and the at least two pairs of valve oil ports by controlling opening or closing of the cartridge valves, thereby stably effectuating shifting between communications of a system hydraulic pump with at least two closed systems.
Disclosed are a cylinder head body, a single cylinder bolt system, and a crane. The cylinder head body comprises at least two cylinder head body split bodies (1, 2), a matching and positioning structure and a fixing and connecting structure being arranged between two adjacent cylinder head body split bodies within the at least two cylinder head body split bodies, the cylinder head body split bodies (1, 2) being provided with tube body split body structures, the tube body split body structures of the at least two cylinder head body split bodies being matched and positioned via the matching and positioning structure and detachably fixed and connected via the fixing and connecting structure to jointly form a tube body. The cylinder head body detachably consists of the at least two cylinder head body split bodies, and matching and positioning and fixing and connecting are respectively implemented via the matching and positioning structure and the fixing and connecting structure, so that the cylinder head body can be disassembled into the split body structures during assembly, and the assembly means are not limited by a traditional assembly sequence, increasing assembly efficiency and production efficiency. In addition, the cylinder head body split body structure is easy to disassemble, convenient to repair, and saves repair costs.
A movable counterweight mechanism of a hoisting machinery, comprising a supporting part (2), a driving part and a counterweight (1). The counterweight (1) is hingedly connected to the supporting part (2) by means of a first hinge part (3), and the driving part is connected between the supporting part (2) and the counterweight (1) so that the counterweight (1) can be overturned outwards relative to a rotary center of the hoisting machinery around the first hinge part (3), and furthermore, the distance from the gravity center of the counterweight (1) to the rotary center of the hoisting machinery is increased. Also disclosed is a hoisting machinery comprising the movable counterweight mechanism. The movement distance of the movable counterweight is increased by overturning the movable counterweight and the whole stability of the hoisting machinery is improved.
B66C 23/76 - Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
66.
Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm
The present invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescopic method thereof. The single-cylinder plug pin type telescopic arm includes a basic arm and at least one telescopic arm sleeved in the basic arm, wherein coaxial center holes are formed in the tails of the telescopic arms, and a telescopic oil cylinder is arranged in the center holes; the telescopic oil cylinder includes a cylinder rod and a cylinder barrel, at least two cylinder heads are fixedly sleeved on the outer side of the cylinder barrel in the longitudinal direction, and at least three arm pin holes are formed in each of the basic arm and the telescopic arms in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the present invention adopts one telescopic oil cylinder and at least two cylinder heads, each cylinder head is adapted to lock and unlock the telescopic oil cylinder and any telescopic arm, the telescopic arms are extended out or retracted in a relay transmission manner to achieve the extension and retraction of the single-cylinder plug pin type telescopic arm, the length of the oil cylinder is shortened, the cylinder diameter and the rod diameter of the oil cylinder are decreased, the cost of the oil cylinder is lowered, the upperstructure weight is reduced, the lifting capacity is improved, and there are more crane design spaces.
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
B66C 23/70 - Jibs assembled from separate sections to form jibs of various discrete lengths
67.
ROTATING ROCKER ARM ASSEMBLY, ROTATING MECHANISM AND MULTI-AXIS ROTATING WHEEL-TYPE HEAVY-DUTY VEHICLE
A rotating rocker arm assembly, comprising a rotating rocker arm body (7), a first rotating connection portion and a second rotating connection portion; a first end and a second end of the rotating rocker body (7) are fixedly connected to a first rocker arm (s1) and a second rocker arm (S2) respectively. The first rotating connection portion and the second rotating connection portion are respectively connected to the first end and the second end of the rotating rocker arm body (7), and the rotating rocker arm (7) can rotate with respect to the first rotating connection portion and the second rotating connection portion. The rotating rocker body (7) is detachably located on a to-be-mounted frame (4) via the first rotating connection portion and the second rotating connection portion. The rotating rocker arm assembly enhances connection strength of a rotating rocker arm, and is prevented from affecting a frame when a connection portion is damaged. The rotating rocker arm assembly reduces costs and subsequent maintenance costs. Further disclosed are a rotating mechanism and multi-axis rotating wheel-type heavy-duty vehicle.
Disclosed is a track hitching structure for a wheeled crane. The track hitching structure has a frame (1) and a connection cross beam (3), wherein a first end of the connection cross beam (3) is used for being connected to a track (2), a second end of the connection cross beam (3) is connected to the frame (1), and the second end of the connection cross beam (3) is higher than the first end of the connection cross beam (3). The track hitching structure uses the connection cross beam (3) with one end being higher and the other lower to connect the frame (1) and the track (2), and that is able to cope with a long-distance power transmission from the track to a frame race, and accordingly to avoid defects such as the complicated structure, large volume and heavy weight of a connection device due to a horizontal connection cross beam, thereby improving the reliability and working performance of the entire machine. Further disclosed is a wheeled crane comprising the track hitching structure.
Disclosed are a wheel type crane and a self-detaching and self-mounting method for a support leg thereof. The wheel type crane comprises a vehicle frame (1) and auxiliary supports (3), wherein the auxiliary supports (3) can enable the vehicle frame (1) to keep balance. Since the wheel type crane has the auxiliary supports, when a support leg is detached or mounted, an auxiliary support serves the function of a landing leg so that an operation part of the wheel type crane itself can be used to mount or detach the support leg, and an auxiliary crane is no longer needed to use, thereby the self-mounting and self-detaching of the support leg on the wheel type crane are realized.
Disclosed are a power transmission control method and device for a crane, and a crane. The method comprises: setting maximum working displacements of a secondary component corresponding to various gears of a crane; obtaining a current gear state of the crane and a specific gear; and determining, according to the current gear state, the working mode of the secondary component, and setting a maximum displacement allowed by the secondary component to be a maximum working displacement corresponding to the specific gear. According to the method, maximum displacements of the secondary component with respect to different gears are controlled, power impact can be reduced, by adding a buffer mode, the influence of instant power loss on the whole vehicle when energy is released can be avoided, vehicle bouncing due to unstable power when the vehicle is at a low speed or the system is abruptly disconnected is prevented, the comfort and safety of a driver is improved, the rotation speed of the secondary component is restricted, and the service life and energy recovery efficiency are increased.
Disclosed are a method and a system for recovering and utilizing duty energy of a crane, and a crane. The method for recovering and utilizing duty energy of a crane comprises: a first hydraulic power device (2) converts the hydraulic pressure energy produced by a hydraulic actuating mechanism (101) into the mechanical energy of a transmission shaft (102); the transmission shaft (102) drives a second hydraulic power device (4) to rotate, and converts the mechanical energy of the transmission shaft (102) into the mechanical energy of the second hydraulic power device (4); the second hydraulic power device (4) fills an energy storage (5) with a pressure oil, and stores the hydraulic energy converted from mechanical energy of the second hydraulic power device (4). The method can effectively recycle gravitational potential energy during the fall of weight in the lifting and luffing duty of the crane, and the recycled energy can be re-used to drive hoisting and luffing, which reduces the fuel consumption of lifting duty, saves energy and reduces emissions.
Disclosed are a crane hydraulic system and a control method based on the system. The crane hydraulic system comprises a load sensing sub-system, said sub-system comprising a variable pump (1-1), a variable pump oil inlet path (1-2), a load feedback path (1-3), an oil return path (1-4) and a pressure compensator (1-5), the pressure compensator (1-5) being provided with an oil inlet port (1-51), an oil outlet port (1-52), a first oil control port (1-53), a second oil control port (1-54) and a control spring (1-55), the oil inlet port (1-51) being connected to the variable pump oil inlet path (1-2), the oil outlet port (1-52) being connected to the oil return path (1-4), the first oil control port (1-53) being connected to the load feedback path (1-3), the second oil control port (1-54) also being connected to the variable pump oil inlet path (1-2), the control spring (1-55) and the first oil control port (1-53) being located at a same end of the pressure compensator (1-5), the set pressure of the control spring (1-55) being greater than the pressure difference of the variable pump (1-1). Via the load sensing sub-system, the pressure compensator can be turned on at the moment when a winch system starts up and shuts down, and the variable pump oil inlet path is connected to the oil return path, implementing pressure relief, and thereby reducing pressure spikes.
Disclosed are a crane operation range compensation method and apparatus. During the operation of a crane, obtaining the current operation range of the crane in real time, the operation of the crane including crane hook raising and lowering; determining whether the absolute value of the value difference between the current operation range of the crane and the operation range of the crane before the operation is less than a first threshold; if the absolute value of the value difference between the current operation range of the crane and the operation range of the crane before the operation is not less than the first threshold, determining the target range-changing angle value according to the operation range before the operation; adjusting the crane operation range according to the target range-changing angle value. The present method implements automatic compensation for the operation range when the crane raises or lowers a hook, and effectively prevents the problem wherein the suspended weight swings and cannot be vertically raised or lowered due to the telescopic boom deformation during hook raising/lowering, thereby enhancing crane operation safety. The invention is also portable and highly intelligent and precise.
B66C 23/06 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes with jibs mounted for jibbing or luffing movements
74.
RIM FOR HEAVY ENGINEERING MACHINERY VEHICLE AND HEAVY ENGINEERING MACHINERY VEHICLE
A rim for a heavy engineering machinery vehicle and a heavy engineering machinery vehicle. The rim comprises a folio aluminum alloy rim structure connected by means of bolts and nuts. The aluminum alloy rim structure is divided into a rim inner body (4) and a rim outer body (1). The external outline of the rim inner body (4) is partially matched with the internal outline of the rim outer body (1), so that positioning in both the axial direction and the radial direction is realized. The rim structure is simpler and more convenient in tire assembly, meets the bearing requirement of the heavy engineering machinery vehicle, and avoids ejecting risk of a locking collar of an existing three-piece steel rim.
A hoisting rope connection device and hoisting equipment; the hoisting rope connection device comprises a connecting bracket (10) provided with at least two inverted-V-shaped connectors, a connecting cylinder (15) and a connecting shaft (14); first connecting holes (11) are provided at the corners of the at least two inverted-V-shaped connectors for connecting to the hoisting rope (3); the connecting shaft (14) passes through the first connecting holes (11) and the connecting cylinder (15) and is fixedly connected to the at least two inverted-V-shaped connectors; the two ends on the bottom of the at least two inverted-V-shaped connectors are respectively detachably connected to two sides on an upper portion of a distal end (2) of a main arm to form a firm and reliable triangular structure; and a height difference between the top and bottom of the connectors allows the connection points of the hoisting rope (3) connected to the first connecting holes (11) on the top to be located at a higher position, thus effectively reducing the deformation of a hoisting main arm. In addition, in a non-hoisting working condition, the hoisting rope connection device can be detached to ensure that the height of the entire hoisting equipment does not exceed a height limit during transportation.
The present invention relates to a combined counterweight hitching device and method thereof, and a counterweight mounting structure. The combined counterweight hitching device is mounted on a turntable tail framework, wherein the combined counterweight hitching device includes a turntable tail framework bottom plate, a lifting oil cylinder, a lifting oil cylinder fixing seat and a hitching driving mechanism, the turntable tail framework bottom plate is fixed on the turntable tail framework, the lifting oil cylinder fixing seat is arranged on the upper surface of the turntable tail framework bottom plate and is hinged with the turntable tail framework bottom plate, the lifting oil cylinder is fixed at one end of the lifting oil cylinder fixing seat, the one end distal to a point on which the turntable tail framework bottom plate is hinged with the lifting oil cylinder fixing seat, a hitching platform is mounted at a piston rod end of the lifting oil cylinder, and the hitching driving mechanism is connected with the lifting oil cylinder fixing seat, and drives the lifting oil cylinder fixing seat to make the hitching platform enter a hitching platform groove on the counterweight to complete a hitching operation. By adopting the combined counterweight hitching device and method, and the counterweight mounting structure provided by the present invention, the mounting and demounting of the combined counterweight are more convenient, and the mounting space is smaller.
Disclosed are a combined counterweight hooking apparatus and method, and a counterweight mounting structure. The combined counterweight hooking apparatus is mounted on a rotary table tail framework (8), and comprises a rotary table tail framework base plate (6), lifting oil cylinders (1), lifting oil cylinder fixing seats (7), and a hooking driving mechanism. The rotary table tail framework base plate (6) is fixed on the rotary table tail framework (8). The lifting oil cylinder fixing seats (7) are disposed on an upper surface of the rotary table tail framework base plate (6) and are hingedly connected with the rotary table tail framework base plate (6). The lifting oil cylinders (1) are fixed on one end of the lifting oil cylinder fixing seats (7) far away from a hinged point of the rotary table tail framework base plate (6). Piston rod ends of the lifting oil cylinders (1) are provided with hooking tables (13). The hooking driving mechanism is connected to the lifting oil cylinder fixing seats (7). By driving the lifting oil cylinder fixing seats (7), the hooking tables (13) enter a hooking groove (3) in a counterbalance so as to complete the hooking operation, so that the combined counterweight is more convenient to mount and dismount and requires a smaller mounting space.
A single-cylinder bolt stretching device and a crane are disclosed. The single-cylinder bolt stretching device is applied to a stretching arm system, and comprises: a stretching oil cylinder (5) used for driving each stretching arm (1) in a stretching arm system to make stretching motion relative to a basic arm; double arm bolt structures (3) arranged on two sides of the tail part of each stretching arm (1) and used for realizing locking and unlocking between each stretching arm (1); an arm bolt pulling and inserting mechanism (4) arranged on the cylinder barrel of the stretching oil cylinder (5) and used for pulling and inserting the double arm bolt structures (3); cylinder bolt structures (2) and cylinder bolt oil cylinders (42) arranged on the cylinder barrel of the stretching oil cylinder (5) and used for realizing locking and unlocking between the cylinder barrel of the stretching oil cylinder (5) and each stretching arm (1). The double arm bolt structures of the single-cylinder bolt stretching device are arranged at two sides of the stretching arm and are more uniform in stress than the structure arranged on the upper side of a suspending arm, so that the influences of flexibility deformation of a crane arm on the bolt hole position and the arm bolt stress situation are reduced.
Disclosed are a single-engine power-driven device and method and a crane, the single-engine power-driven device comprising a lower engine (102), a slewing driving mechanism, and an upper transfer case (110), wherein the lower engine for providing power for a lower front drive axle and a lower rear drive axle is connected to the upper transfer case via the slewing driving mechanism; the slewing driving mechanism is able to drive the upper transfer case by means of the torque and/or power from the lower engine; and various power output ports of the upper transfer case are respectively connected to corresponding upper hydraulic pumps (111). The single-engine power-driven device has a purely mechanical power transmission mode, relatively high operating efficiency and relatively low energy loss, can ensure the operation of upper crane hoisting in various working conditions, and is not only suitable for medium and small tonnage cranes, but also for large tonnage cranes.
B66C 23/40 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with a single prime mover for both crane and vehicle
B60K 25/06 - Auxiliary drives from the transmission power take-off
B60K 17/28 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
The present application discloses an engine system of a crane, which includes a natural gas engine (11) arranged on a walking platform plate (30) between a crane cab (31) and a turntable (32), a liquid storage tank (12) for containing liquefied natural gas, and a liquefied natural gas (LNG) system composed of a vaporization assembly (13), wherein an outlet of the liquid storage tank (12) is in communication with a gas inlet of the natural gas engine (11) through the vaporization assembly (13). The present application further discloses a crane having the above-mentioned engine system. The present application can reduce the cost of using the crane and noise, and is environmentally friendly.
A target positioning method and system for construction machine operation. The method comprises: A reference station (901) collects satellite positioning information in real time, uses said information as current measurement value D0, and transmits D0 to a first mobile station and a second mobile station (902, 903); the first mobile station and the second mobile station separately collect satellite positioning information in real time, use said information as current measurement values D1 and D2, and separately perform real-time dynamic differential processing on D0 and D1 and on D0 and D2 so as to obtain the relative coordinates of the first mobile station and the second mobile station; a resolution unit of a crane (904) determines, according to the relative coordinates of the first mobile station and the second mobile station, the jib extension length, the jib pitch angle, and the jib rotation angle; a controller of the crane (905) controls, according to the jib extension length, the jib pitch angle, and the jib rotation angle, the jib to move to the lifting position where the object to be lifted is so as to lift the object to be lifted. The system substantially enhances the positioning precision of the operation target and automatically tracks the jib, thereby avoiding errors and risks caused by adjustment made using visual measurement.
Disclosed are a follow-up steering control system for a multi-axle automobile crane and the multi-axle automobile crane. In a steering state of the multi-axle automobile crane, an output oil pressure of a first oil pressure output port is greater or less than that of a second oil pressure output port; a piston rod of a left-turning hydraulic cylinder is lengthened and a piston rod of a right-turning hydraulic cylinder is shortened, or the piston rod of the left-turning hydraulic cylinder is shortened and the piston rod of the right-turning hydraulic cylinder is lengthened; and a first knuckle arm and a second knuckle arm are driven to make a rear left steering wheel and a rear right steering wheel turn left or right.
B62D 5/20 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
B62D 7/14 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B62D 5/065 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
Disclosed is an independent suspension system, comprising: two suspension cylinders (1) which are respectively arranged between wheel edges (21) of wheels at two sides and a frame (8); and a steering mechanism (3) which is used for driving the steering of the wheels at the two sides under the drive of a steering cylinder. The independent suspension system also comprises two swing links (4) which are arranged corresponding to the wheels at the two sides, wherein the end portion of each swing link (4) at one side is hinged to the wheel edge (21) of the wheel at the corresponding side via a spherical hinge; and the end portion thereof at the other side is respectively hinged to a fixed component which is fixed below a main reducer (5) in forward and backward directions via two spherical hinges. Also disclosed is a crane having the independent suspension system. By means of the improvement of the structure, the alignment of tires mounted at the wheel edges is achieved, thereby ensuring that the movement of the tires conforms to the design requirements when the crane is travelling, thereby avoiding destructive effects which the suspension cylinders may have, so that the mutually independent movement of the wheels at the left side and the right side can be reliably achieved.
B60G 21/05 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
B60G 13/08 - Resilient suspensions characterised by arrangement, location, or type of vibration-dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
84.
INDEPENDENT SUSPENSION SYSTEM AND CRANE HAVING SAME
Disclosed is an independent suspension system, comprising: two suspension cylinders (1) which are respectively arranged between wheel edges (21) of wheels at two sides and a frame (8); and a steering mechanism (3) which is used for driving the steering of the wheels at the two sides under the drive of a steering cylinder. The independent suspension system also comprises two swing links (4) which are arranged corresponding to the wheels at the two sides, wherein the end portion of each swing link (4) at one side is hinged to the wheel edge (21) of the wheel at the corresponding side via a spherical hinge; and the end portion thereof at the other side is respectively hinged to a fixed component which is fixed below a main reducer (5) in forward and backward directions via two spherical hinges. Also disclosed is a crane having the independent suspension system. By means of the improvement of the structure, the alignment of tires mounted at the wheel edges is achieved, thereby ensuring that the movement of the tires conforms to the design requirements when the crane is travelling, thereby avoiding destructive effects which the suspension cylinders may have, so that the mutually independent movement of the wheels at the left side and the right side can be reliably achieved.
B60G 21/05 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
B60G 13/08 - Resilient suspensions characterised by arrangement, location, or type of vibration-dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
85.
APPARATUS AND METHOD FOR DETECTING AND PROTECTING TELESCOPIC OIL CYLINDER OF CRANE
Disclosed is an apparatus for detecting and protecting a telescopic oil cylinder of a crane, comprising a large-cavity pressure sensor (205), a small-cavity pressure sensor (206), a controller (203), a telescopic oil cylinder (213), and a telescopic oil cylinder regulator. Further disclosed is a method for detecting and protecting a telescopic cylinder of a crane in which the large-cavity pressure sensor (205) measures the oil pressure in a large cavity of the telescopic oil cylinder (213); the small cavity pressure sensor (206) measures the oil pressure in a small cavity of the telescopic oil cylinder (213); the controller (203) controls an output electrical signal according to a large-cavity oil pressure fed back by the large-cavity pressure sensor (205) and a small-cavity oil pressure fed back by the small-cavity pressure sensor (206), so as to control a change of the amount of hydraulic oil flowing into and out of the large and small cavities by means of the electrical singla, in order to regulate the oil pressure in the large and small cavities.
A single-acting pin-type telescoping arm, a crane, and a telescoping method thereof. The single-acting pin-type telescoping arm has a basic arm (11) and at least one section of telescoping arm (12, 13, 14, 15, 16) sleeved inside the basic arm (11). A coaxial central hole is disposed at an end portion of the telescoping arm (12, 13, 14, 15, 16). A telescoping cylinder is disposed in the central hole. The telescoping cylinder comprises a piston rod and a cylinder barrel (17). At least 2 cylinder heads (18, 19) are fixedly sleeved longitudinally on an outer side of the cylinder barrel (17). At least 3 arm pinholes (23, 24, 25) are disposed longitudinally on both the basic arm (11) and the telescoping arm (12, 13, 14, 15, 16). The single-acting pin-type telescoping arm uses one telescoping cylinder and at least 2 cylinder heads (18, 19), where each cylinder head (18, 19) can implement locking and unlocking between the telescoping cylinder and any telescoping arm (12, 13, 14, 15, 16), and perform extension or retraction of the telescoping arm (12, 13, 14, 15, 16) in a relay transmission manner to implement telescoping of the single-acting pin-type telescoping arm, thereby shortening the cylinder, reducing a cylinder diameter and a rod diameter of the cylinder, lowering a cost of the cylinder, reducing an onboard weight, enhancing a hoisting capability, and providing higher flexibility for the design of a crane.
The present invention relates to a single-cylinder plug pin type telescopic arm, a crane and a telescopic method thereof. The single-cylinder plug pin type telescopic arm includes a basic arm and at least one telescopic arm sleeved in the basic arm, wherein coaxial center holes are formed in the tails of the telescopic arms, and a telescopic oil cylinder is arranged in the center holes; the telescopic oil cylinder includes a cylinder rod and a cylinder barrel, at least two cylinder heads are fixedly sleeved on the outer side of the cylinder barrel in the longitudinal direction, and at least three arm pin holes are formed in each of the basic arm and the telescopic arms in the longitudinal direction. The single-cylinder plug pin type telescopic arm provided by the present invention adopts one telescopic oil cylinder and at least two cylinder heads, each cylinder head is adapted to lock and unlock the telescopic oil cylinder and any telescopic arm, the telescopic arms are extended out or retracted in a relay transmission manner to achieve the extension and retraction of the single- cylinder plug pin type telescopic arm, the length of the oil cylinder is shortened, the cylinder diameter and the rod diameter of the oil cylinder are decreased, the cost of the oil cylinder is lowered, the upperstructure weight is reduced, the lifting capacity is improved, and there are more crane design spaces.
The present invention relates to a turning system and a heavy-load wheeled vehicle having independent suspension. The turning system comprises a turning mechanism and a turning hydraulic assisting system; the turning mechanism is used to provide turning force for wheels, and the turning hydraulic assisting system is used to provide assisting turning force for the wheels so as to overcome the turning resistance torque from the ground. In the present invention, the turning mechanism is provided to provide turning force for wheels and the turning hydraulic assisting system is provided to provide assisting turning force for the wheels to overcome the turning resistance torque from the ground. Compared to the turning systems that rely only on the torque outputted by a turning device or rely only on the torque outputted by a turning device and a turning assisting servo, the present invention can effectively overcome the turning resistance torque from the ground, and provide vehicles with turning capability in different types of sites.
Disclosed are a follow-up steering control system of a multi-axle automobile crane and the multi-axle automobile crane, wherein in a steering state of the multi-axle automobile crane, an output oil pressure of a first oil pressure output port is larger or less than that of a second oil pressure output port; a piston rod of a left-turning hydraulic cylinder (8) is lengthened and a piston rod of a right-turning hydraulic cylinder (13) is shortened, or the piston rod of the left-turning hydraulic cylinder (8) is shortened and the piston rod of the right-turning hydraulic cylinder (13) is lengthened; and a first steering knuckle arm (17) and a second steering knuckle arm (18) are driven to make a rear left steering wheel (11) and a rear right steering wheel (15) turn left or right. The follow-up steering control system of the multi-axle automobile crane provides a hydraulic control follow-up steering control method for a vehicle with an active steering rear axle, so that the low-speed steering maneuverability and curve passing capacity of the multi-axle automobile crane are improved, and the drift phenomenon which may occur during high-speed driving is avoided.
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B66C 23/36 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes
90.
ELECTRIC-CONTROL MULTIMODE STEERING VALVE, STEERING HYDRAULIC CONTROL SYSTEM, AND WHEEL TYPE CRANE
Disclosed is an electric-control multimode steering valve. The steering valve comprises: a flow distributing and collecting valve (Y), a first electromagnetic exchange valve (Y1), and a second electromagnetic exchange valve (Y2). A valve body comprises four groups of paired valve oil ports. First oil ports of the first electromagnetic exchange valve (Y1) and the second electromagnetic exchange valve (Y2) are respectively in communication with a first group of valve oil ports (PR, PL) of the valve body. Second oil ports of the first electromagnetic exchange valve (Y1) and the second electromagnetic exchange valve (Y2) are respectively in communication with a second group of valve oil ports (A1, B1) of the valve body. A third oil port of the first electromagnetic exchange valve (Y1) is in communication with a flow collecting port of the flow distributing and collecting valve (Y). A first flow distributing port of the flow distributing and collecting valve (Y) and a third oil port of the second electromagnetic exchange valve (Y2) are respectively in communication with a third group of valve oil ports (A2, B2) of the valve body. A second flow distributing port of the flow distributing and collecting valve (Y) and the third oil port of the second exchange valve (Y2) are respectively in communication with a fourth group of valve oil ports (A3, B3) of the valve body. Further disclosed are a steering hydraulic control system and a wheel type crane. The steering valve can implement multimode steering of engineering vehicles, and the working is reliable and the cost is low.
B62D 5/06 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
B62D 5/08 - Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of valve used
91.
HYDRAULIC CONTROL VALVE, DUAL-CYLINDER EXTENSION SYSTEM AND AERIAL WORK ENGINEERING MACHINE
A hydraulic control valve, a dual-cylinder extension system and an aerial work engineering machine. The control valve comprises a flow distributing and collecting valve, and control valve body is provided with a first oil opening, a second oil opening and a third oil opening. A first oil opening, a second oil opening and a third oil opening of said flow distributing and collecting valve are respectively communicated with the first oil opening, the second oil opening and the third oil opening of the valve body. The control valve has two working states, wherein, in the first working state, the oil path between the second oil opening and the third oil opening of the valve body is blocked; and in the second working state, the oil path between the second oil opening and the third oil opening of the valve body is opened. The hydraulic control valve is able to make the two cylinders of the dual-cylinder extension system extend synchronously so as to shorten the action time of the extension system, thereby improving the working efficiency.
Disclosed in the present invention is a water plunger pump has two plunger groups (1, 2) each comprised bynsists of a water cylinder (11, 12) and an oil cylinder (12, 22). A water cylinder piston and an oil cylinder piston of each plunger group (1, 2) move synchronously, and the water port of each water cylinder canister (111, 211) is provided with a water inlet check valve (12, 23) for unidirectionally admitting from the outside to the inner cavity of the canister and a water outlet check valve (14, 24) for unidirectionally admitting from the inner cavity of the canister to an outside water outlet. Two oil cylinders (12, 22) are configured to alternatively stretch under the control of a control valve. Said water plunger pump breaks through the configuration and principle of the traditional water pump and enables switching between two working states by alternative movement of two water cylinder pistons which are driven by alternative stretch of two oil cylinders (12, 22). Compared with the prior art, based on supplying water without interruption, said water plunger pump can enhance outlet flow and water pressure. Based on this, a hydraulic control system of said water plunger pump is provided.
F04B 9/113 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor
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