179results about How to "Improve passability" patented technology

The utility model discloses a wheat and corn triangular final singling interplanting close planting planter, which comprises a traction frame, a land wheel and seeding monomers, the seeding monomers perform small double-row triangular final singling mode seeding during seeding, at least two seeding monomers are arranged on the traction frame side by side through a four-bar linkage, the land wheel is connected with the traction frame through a connecting frame, and the land wheel is connected with the traction frame through a connecting frame. The land wheel is linked with a transmission through a transmission mechanism, the transmission drives the seeding monomers to synchronously rotate through a driving mechanism to realize seeding operation, and the distance between the seeding monomers is matched with a corn interplanting area reserved during wheat planting and seeding; the sowing machine is improved on the basis of an existing sowing machine, a small double-row triangular final singling sowing mode is adopted for corn sowing in a corn interplanting area reserved during wheat sowing, the wheat and corn interplanting mode is optimized, the corn sowing density is increased, the interplanting land utilization rate is increased, and the yield is increased.

The utility model relates to the technical field of municipal engineering and robot technology intersection, especially a kind of self-propelled dredging robot of municipal sewer pipeline inner wall.The utility model provides a kind of self-propelled dredging robot of municipal sewer pipeline inner wall, including frame, track module and electric telescopic rod etc., two track modules are slidably installed in the left and right sides of frame, track module is all arranged obliquely, two electric telescopic rods are installed in the left and right sides of frame, and the telescopic end of electric telescopic rod is connected with the track module that is close to each other.The utility model provides walking power source by track module, significantly enhances the passing capacity of equipment whole, so that it can adapt to a variety of complex terrain environment in pipeline, simultaneously, under the assistance of supporting wheel and electric push rod, ensure that track is always close to inner wall, improve grip, and then effectively improve the operating stability and operation reliability of equipment.

This invention discloses a core retrieval or recovery tool for drilling, relating to the field of drilling engineering technology. The internal drill string assembly is suspended within the central channel of the external drill string assembly via a centralizer. The lower end of the internal assembly is a retaining spring assembly, and the lower end of the external assembly comprises the drill bit and multiple sliding blocks. One end of each sliding block extends into one end of the drill bit and is suspended by an elastic element. One end of the retaining spring assembly passes through the drill bit and extends between the sliding blocks, with the outer wall of the retaining spring assembly engaging with the inner wall of each sliding block via a bevel. Drilling fluid is introduced into the internal drill string assembly, causing it to move downwards relative to the external assembly. The downward movement of the retaining spring assembly pushes the sliding blocks outwards away from the drill bit's centerline. When the internal drill string assembly resets, the elastic element drives the sliding blocks back towards the drill bit's centerline. This invention improves drill string throughput and prevents the loss of incomplete or fragmented core samples at the drill bit, thereby increasing the core retrieval rate or core recovery rate.

The utility model relates to a cleaning robot and a cleaning system. The cleaning robot comprises a body and a lifting mechanism, and the lifting mechanism is arranged on the body and used for driving at least one side of the body to be lifted. The lifting mechanism comprises at least two walking assemblies, a transmission assembly and a driving assembly, each walking assembly comprises a wheel shell and a wheel rotationally arranged on the wheel shell, the wheel shells are connected with the body, the transmission assembly is connected with the at least two wheel shells, and the driving assembly is connected with the transmission assembly. In the process that the driving assembly drives the transmission assembly to move from the first position to the second position, the transmission assembly applies acting force facing the target face to at least one of the at least two wheel shells, so that the first side of the body is driven to be lifted relative to the target face when the at least two wheel bodies are supported on the target face. The cleaning robot in the embodiment of the utility model can autonomously get out of trouble and pass through the obstacle through the lifting mechanism, a user does not need to frequently intervene manually, and the use experience of the user is improved.

The utility model discloses a kind of peanut seeding devices for agricultural machinery, including carrier structure, which is dragged forward by agricultural machinery, ditching device, the ditching device is installed at the bottom of the carrier structure, and the ditching device is provided with more than one, seeding mechanism, the seeding mechanism is installed by the carrier structure, the seeding mechanism corresponds to the ditching device, and the seeding mechanism spreads seeds into planting groove opened by the ditching device;Soil covering mechanism, the soil covering mechanism is installed by the carrier structure, and the soil covering mechanism re-enters planting groove into soil that ditching device pushes away;The device advances in the form of dragging, and high-efficiency seeding can be realized.

This application relates to the field of robotic arm technology and provides a flexible robotic arm and a control method for the flexible robotic arm. The flexible robotic arm of this application includes a drive assembly, a connecting assembly disposed on the drive assembly, and an execution assembly disposed on the connecting assembly. The connecting assembly includes multiple sequentially connected connecting units. The drive assembly drives each connecting unit to change the orientation and position of the execution assembly. The execution assembly receives the drive from the drive assembly to perform a grasping action. The flexible robotic arm described in this application improves the usability of robotic arms.

The invention relates to the technical field of deep sea resource development, in particular to a magnetic type deep sea ore collecting device which comprises a rigid pressure-resistant main frame, mechanical legs, mechanical arms, an ore processing module, a communication module, a pushing module and a positioning module. A sealed pressure-resistant cabin is arranged in the rigid pressure-resistant main frame; the mechanical legs are symmetrically installed on the two sides of the rigid pressure-resistant main frame. The mechanical arm is installed on the front end face of the rigid pressure-resistant main frame. The ore processing module is arranged along the center line of the rigid pressure-resistant main frame; the communication module is connected with the water surface support mother ship through an armored cable; the pushing module comprises a plurality of horizontal propellers and a plurality of vertical propellers; the positioning module is installed on the upper side face of the rigid pressure-resistant main frame. The device provided by the invention has the advantages of good terrain adaptability, high collection integrity, small disturbance and reliable operation, and is suitable for selective collection operation of resources in a deep sea complex environment.

The utility model belongs to the field of grease filters, and particularly relates to an anti-blocking grease filter which comprises a grease filter body, according to the grease filter, the grease filter body, the stirring mechanism and the extension mechanism are matched for use, so that in order to prevent the situation that the filtering effect is weakened due to the fact that the filtering net is blocked, impurities accumulated on the surface of the filtering net can be scattered to be loose through the stirring mechanism, and the passing ability during grease filtering is facilitated; in order to prevent clothes from being stained by splashed oil when a worker pours oil, the extending cover is adjusted through the extending mechanism to prevent the oil from being splashed to places outside the grease filter body to a certain extent, and the problems that the oil needing to be filtered is generally poured into the grease filter, impurities are accumulated due to the increase of filtering times, and the oil filtering efficiency is reduced are solved. Excessive impurities can press the impurities at the bottom in contact with the filter screen, so that the filter screen is blocked, and the filtering efficiency is reduced or the filtering effect cannot be completely realized.

The invention provides a large sprinkling machine truss device which comprises a main frame, two auxiliary frames and a traction mechanism, and the main frame is installed on a sprinkling machine; the two auxiliary frames are symmetrically arranged at the two ends of the main frame, the auxiliary frames and the main frame are rotationally connected through shaft bodies, and the auxiliary frames can be screwed into the main frame; a locking assembly is arranged between the auxiliary frame and the main frame, and the shaft body and the locking assembly are located at the ends, connected with the main frame, of the auxiliary frame respectively. The traction mechanism comprises a base plate, a telescopic supporting assembly, a winding assembly and two steel wire ropes, and the base plate is connected with the main frame and located in the middle of the main frame; the telescopic supporting assembly and the winding assembly are installed on the base plate. And the two steel wire ropes are symmetrically arranged. According to the truss device of the large sprinkling machine, the auxiliary frame is stored in the main frame through the traction mechanism, the disassembly and assembly process is simplified, the occupied space is reduced, and therefore convenient conditions are provided for transfer.

The invention relates to the technical field of medical instruments, and discloses a micro catheter. Wherein the microcatheter is sequentially provided with a lining tube and a high polymer material layer from inside to outside in the radial direction, a variable-diameter section is arranged at the far end of the microcatheter, a small-diameter section is arranged on one side of the far end of the variable-diameter section, and a large-diameter section is arranged on one side of the near end of the variable-diameter section; the high polymer material layer comprises a first hardness area, a second hardness area and a third hardness area which are sequentially arranged from the far end to the near end, the first hardness area is located on a part of the small-diameter section, the second hardness area is located on the other part of the small-diameter section, the variable-diameter section and a part of the large-diameter section, and the third hardness area is located on the other part of the large-diameter section; the hardness of the first hardness area is smaller than that of the second hardness area, the hardness of the second hardness area is smaller than that of the third hardness area, and smooth transition of different hardness materials of the large-diameter section and the small-diameter section of the microcatheter is achieved; the flexural rigidity of the reducing section is reduced, so that the change value of the flexural rigidity is reduced, the stress concentration is reduced, and the reliability of the microcatheter is improved.

The utility model discloses a food metal detector, including mounting rack, conveyer belt, protection support and detection device, the both sides of mounting rack outer wall are fixedly provided with fixed plate, the inside of fixed plate is rotatingly provided with screw, the upper part of screw outer wall is in threaded connection with threaded cylinder, and the threaded cylinder is in threaded connection with the screw. And the threaded cylinder is fixedly installed at the bottom of the protection support, a double-head motor is fixedly arranged at the bottom of the installation frame, the two output ends of the double-head motor are both connected with rotating shafts, a driving wheel is fixedly arranged at one end of each rotating shaft, and a driven wheel is meshed with one side of each driving wheel. The food metal detector relates to the technical field of metal detectors, the screw rod and the threaded cylinder are arranged between the mounting rack and the protection support, and under the driving of the double-head motor, the lifting control of the protection support is realized, so that the overall trafficability of the food metal detector is improved, and the safety of the food metal detector is improved. Meanwhile, the phenomenon that signals are weak when small food passes through the detector is avoided.

The present application relates to the technical field of pipeline construction, and provides a pipeline intelligent assembly robot and an automatic assembly method, the robot comprising: a mobile carriage provided with a plurality of supporting legs at the bottom, and each supporting leg is provided with a mobile pulley at the bottom; a mobile sliding rail provided on the top surface of the mobile carriage along the length direction of the mobile carriage; two sliding plates, each provided with a driving assembly and a lifting assembly, the driving assembly being used for moving the sliding plate along the mobile sliding rail; an image acquisition sensor provided on the sliding plate; an intelligent remote controller in communication connection with the driving assembly, the lifting assembly and the image acquisition sensor; wherein the lifting assembly is used for hoisting the pipeline, and the image acquisition sensor is used for acquiring the position information of the pipeline interface; the assembly method comprising: S1, transportation preparation; S2, visual positioning; S3, intelligent centering; S4, fixed evacuation; having the characteristics of compact structure, high assembly precision and high construction safety and efficiency.

The utility model discloses a robot test track, which relates to the field of tracks, and aims to solve the problems of simple structure, low test efficiency, incomplete parameter coverage and insufficient dynamic adaptability of the conventional robot test track, and comprises a low-rail support frame, a connecting beam is fixedly connected to one side of the low-rail support frame, and a high-rail support frame is fixedly connected to the other end of the connecting beam. The low-rail supporting frame and the high-rail supporting frame are fixedly connected with semi-ring rails, one sides of the two semi-ring rails are jointly connected with a low-gradient rail, the other ends of the two semi-ring rails are jointly connected with a high-gradient rail, and the cross sections of the semi-ring rails, the low-gradient rail and the high-gradient rail are all of an I-shaped structure. The two semi-ring tracks, the low-gradient track and the high-gradient track form a closed-loop structure. The comprehensive testing device has the advantages that the comprehensive testing on the turning radius and different climbing gradients is realized; meanwhile, by adjusting the lengths of the high-gradient track and the low-gradient track, the gradient of the tracks can be adjusted, so that the trafficability of the robot on different gradients can be conveniently tested.

This utility model belongs to the field of coal mine inspection technology, specifically an inspection robot lifting platform. It includes a chassis with a liftable lifting platform mounted on top. An electric rotating gimbal is mounted on the upper surface of the lifting platform, which drives the gimbal to move up and down. A robotic arm is mounted on the upper surface of the electric rotating gimbal. This inspection robot lifting platform, with its tracks on the chassis, increases the stability and obstacle-crossing performance of the inspection robot, thus adapting to various complex underground road environments, especially better handling uneven and potholed road sections. The liftable platform on top of the chassis, using a hydraulic pump station to drive hydraulic cylinders, allows for flexible adjustment of the inspection robot's height, adapting to different underground environments, enhancing passability, and providing different viewing angles.

The utility model discloses a front end base, a front end assembly, an insertion portion and an endoscope, and relates to the field of medical instruments, the front end base is used for the endoscope, an installation cavity is arranged in the front end base, the installation cavity is communicated with the far end face of the front end base, the installation cavity is used for installing a camera module and an illumination module, and the side face of the installation cavity is open. At least one of the camera module and the lighting module is exposed. The camera module and the lighting module are located in the mounting cavity, it is avoided that a plurality of components are arranged in a plurality of cavities respectively, partition plates among the cavities can reduce the volume utilization rate of the front end base, the internal space of the front end base can be optimized due to the fact that the camera module and the lighting module are located in the same mounting cavity, and therefore when the lighting module and the camera module of the same specification are arranged, the volume utilization rate of the front end base is increased. The size of the front-end assembly can be smaller, and the trafficability of the front-end assembly is higher. The front end seat can be provided with a lighting module and a camera module which are larger in size. In addition, installation personnel can install the camera module and the lighting module at the same time, and assembling steps are reduced.

This disclosure relates to a stabilizer bar system and a vehicle. The stabilizer bar system includes a stabilizer bar, a hydraulic cylinder, a hydraulic flow path, and a regulating valve assembly. The stabilizer bar includes a first half-bar and a second half-bar. The hydraulic cylinder includes a cylinder body and a piston. The cylinder body is divided into two hydraulic chambers by the piston. One of the first half-bar and the second half-bar is connected to the cylinder body, and the other is connected to the piston. The hydraulic flow path connects to both hydraulic chambers. The regulating valve assembly includes multiple regulating valves connected in series in the hydraulic flow path. Through this configuration, the equivalent stiffness of the stabilizer bar system can be adjusted, allowing the resistance of the stabilizer bar to the suspension to be adjustable. This enables the vehicle to better adapt to different road conditions and improves vehicle stability and passability.

The application discloses a spherical tire for a vehicle and the vehicle, and the spherical tire comprises a shell assembly, the shell assembly is configured as a spherical structure; a plurality of transmission members are arranged in the shell assembly along a circumferential direction of the shell assembly, and the center points of the plurality of transmission members coincide with the center point of the shell assembly; a plurality of driving assemblies are arranged in the shell assembly, any one of the transmission members is correspondingly arranged with at least one of the driving assemblies and is in transmission connection, and the driving assemblies are suitable for driving the transmission members to rotate, so that the shell assembly moves in any direction. The spherical tire disclosed by the application can break the limitation of the turning angle of the vehicle and greatly improve the passing performance of the vehicle.

This invention belongs to the technical field of mechanical sand-fixing equipment, specifically relating to a straw checkerboard laying vehicle. It includes a chassis supporting the upper structure, with a traveling mechanism at the lower end of the chassis. In this embodiment, the traveling mechanism is a tracked type. A straw roll conveyor is bolted to the top of the chassis, and a pressing machine is installed at the rear end of the conveyor. A hopper is installed at the top of the conveyor. The straw rolls are laid on the sand by the conveyor, and then the pressing machine presses the laid straw rolls into the sand along the middle to fix them in place. This system enables automated, integrated straw checkerboard laying. The robot is small in size, has excellent maneuverability, and can adapt to various complex terrains in the desert. Its high degree of automation reduces the trampling of straw checkerboards and effectively improves the efficiency of straw checkerboard laying.

This invention relates to the field of motorsports technology, and more particularly to a transmission system for an off-road rally car and a race car equipped with the transmission system. The system includes a frame and a transmission system mounted on the frame. Wheels are mounted on the frame via a suspension system. The transmission system includes a gearbox mounted at the rear of the frame and a differential mounted at the front of the frame; the gearbox and the differential are connected by a first driveshaft positioned at the front and rear. The suspension system includes front steering knuckles located inside the two front wheels, both of which are fixed to the front side of the frame via upper and lower double wishbone suspensions. This off-road rally car has advantages such as lighter weight, more compact structure, better handling, superior passability, and higher safety. The lighter vehicle has sufficient power performance, and its low self-friction resistance during travel improves its ability to traverse uneven roads, reducing the risk of rollover and thus improving race performance.

The invention relates to the technical field of vehicles, in particular to an air spring rigidity adjusting system and a vehicle. The air spring rigidity adjusting system comprises two air spring sets which are oppositely arranged on the two sides of the vehicle, and each air spring set comprises at least one air spring. The air storage device comprises at least two air storage cylinders, and the air springs are connected with the air storage cylinders through air paths; the valve group comprises a plurality of valves, and the plurality of valves are respectively arranged in the gas path; the air spring is used for being communicated with different air storage cylinders through opening and closing of the multiple valves. The air springs are communicated with the air storage cylinders with different volumes to adjust the rigidity of the air springs, so that the rigidity of the air springs on the two sides of the vehicle can be changed, the rigidity of the air springs on the two sides of the vehicle can be switched in real time according to the driving condition of the vehicle during driving, and the vehicle obtains excellent stability and trafficability.

The utility model discloses a kind of gas cylinder carrying slope frame of adjustable gradient, including antiskid bottom plate and transport plate, the end of the antiskid bottom plate with the transport plate is rotatably connected by pivot, another side of the antiskid bottom plate is provided with multiple gradient adjustment power assembly, the top of the gradient adjustment power assembly with the transport plate is in contact together, the gradient adjustment power assembly is electrically connected with gradient adjustment controller assembly, the gradient adjustment controller assembly is connected with remote end by wireless signal, this kind of gas cylinder carrying slope frame of adjustable gradient, can be adjusted gradient, end height in real time by remote control mode, to interface different height's barrier, transport gas cylinder to required position, with the advantages that operation is simple, flexibility is high, passability is good.

The utility model discloses a kind of underflow slurry pumps, it includes: motor, the motor is arranged on motor support, one end of the motor support is provided with bearing support, intermediate connecting pipe is provided on the bearing support;Slurry pump body, the slurry pump body is connected with the intermediate connecting pipe, impeller is provided in the slurry pump body, the rear cover plate of the impeller is provided with a plurality of back vanes;Shaft, the shaft is built in the intermediate connecting pipe, one end of the shaft is connected on the output shaft of the motor, the other end of the shaft is connected the impeller, sliding bearing is provided on the shaft, intermediate support is provided on the sliding bearing, the intermediate support is connected with the intermediate connecting pipe.The utility model compared with prior art by increasing sliding bearing on the shaft, increase fulcrum, reduce the flexible deformation amount in the process of shafting operation, ensure the stability of impeller operation, reduce the risk of broken shaft, good safety.

The utility model discloses a combined spliced graphitization furnace waste gas treatment device relates to graphitization furnace waste gas treatment device technical field, the utility model discloses a bottom plate is installed the filter jar at the top of bottom plate, the water tank is installed at the top of bottom plate, the top fixedly connected with exhaust pipe of water tank. The utility model discloses a filter part, specifically when the waste gas that enters the inside of filter jar is primarily filtered, the rotation of pivot one will drive the rotation of vibrating piece one, and the convex block on vibrating piece one will contact with the convex block on vibrating piece two when vibrating piece one rotates, makes filter plate slide on guide rod, and makes spring contract, when the convex block on vibrating piece one and vibrating piece two no longer contact, spring drives filter plate reset, to this realizes the vibration effect of filter plate, reduces the dust in waste gas and adheres the situation on filter plate, has promoted the passability of filter plate, has reduced the jam problem that filter plate appeared because of dust adhesion, has guaranteed the filtration effect.

The invention relates to the technical field of fire-fighting robots, and discloses a fire rescue robot anti-collision structure based on visual feedback. High-pressure water flushing protection mechanisms are arranged on the two sides of the fire-fighting robot. The high-pressure water flushing protection mechanism comprises a U-shaped pipe, control equipment and a plurality of high-pressure nozzles; the fire-fighting robot is further provided with induction equipment. The sensing device monitors the surrounding environment in real time, when obstacles in the advancing direction are detected, high-pressure water flow is sprayed out in advance through the high-pressure spray head for buffering, and surrounding residual fire is extinguished. The high-pressure water flushing protection mechanism can be rotatably stored, a U-shaped pipe of the high-pressure water flushing protection mechanism is composed of a curved pipe and a rotatable straight pipe, and the conversion between a buffering mode and a fire extinguishing mode is achieved by switching a high-pressure spray head and a diffusion spray head. And an anti-collision fence structure is arranged on the periphery and is linked with the spray head to form a water cushion effect to enhance buffering. According to the robot, collision is actively prevented through visual feedback, multi-mode water spraying and anti-collision fence linkage are combined, and the anti-collision capacity and the fire extinguishing efficiency of the robot are remarkably improved.

The invention discloses a double-layer lifting type automatic loading and unloading assault boat transport vehicle, which relates to the technical field of emergency rescue transport equipment, and comprises a transport vehicle body, a lifting mechanism, a loading and unloading mechanism and an assault boat trailer frame, the lifting mechanism comprises an upper-layer plate, a lower-layer plate, a vertical plate, a first fixing block, a second fixing block, a rectangular frame, an extension rod, a matching block and a first electric-hydraulic push rod. According to the double-layer lifting type automatic loading and unloading assault boat transport vehicle, an assault boat body, an outboard engine and a trailer frame do not need to be disassembled, overall loading and unloading of the assault boat and the trailer frame can be achieved, the tedious disassembling and on-site assembling steps in a traditional transport mode are thoroughly omitted, large-scale external equipment such as a crane and a loading vehicle does not need to be relied on, and the transportation cost is reduced. The loading and unloading operation can be completed only through the device carried by the vehicle, equipment deployment can be rapidly carried out even in complex terrains or remote rescue sites, the rescue preparation time is remarkably shortened, and it is ensured that water area rescue work is put into the first time.

This invention discloses a microporous fluid control component and fluid processing assembly, relating to the fields of micro / nano fluid control and precision manufacturing technology. It includes a substrate and a flow field control structure. The substrate has a first surface for receiving fluid and interacting with an external shear flow field, and a second surface for discharging fluid. Several main flow channels are disposed on the substrate, penetrating the first and second surfaces. The flow field control structure includes several flow field control subsystems. The solid region of the first surface and / or the inner wall of the main flow channels are provided with flow field control subsystems. Each flow field control subsystem includes multiple micro-fluid interference components with preset three-dimensional geometric shapes. This microporous fluid control component and fluid processing assembly causes shear thinning of the fluid, significantly reducing near-wall viscosity, eliminating stagnant layers, and thus improving the filling efficiency and throughput of the slurry entering the main flow channels.

The utility model provides a robot solar panel folding device, and mainly relates to the field of search and rescue robot equipment. A robot solar panel folding device comprises a solar folding panel and a bottom plate. The beneficial effects of the utility model are that through the arrangement of the solar panel which can be folded and stored and the arrangement of the solar panel folding storage bin, the solar panel can be driven by the power device to be folded and stored in the folding storage bin; furthermore, track rods capable of horizontally moving left and right are arranged on the two sides of the device to limit the folding position of the solar panel to prevent deflection, an inclined plate structure is further arranged on the power structure to adjust the width of the track rods on the two sides, and after the solar panel is unfolded, the track rods on the two sides move towards the inner side to limit the solar panel folding mechanism; furthermore, a solar folding plate bin cover is arranged on the rear portion of the power device to shield an opening of the folding storage bin, and then the solar panel is further protected.

The application relates to a stabilizer bar assembly and a vehicle, the stabilizer bar assembly comprising a housing, a transmission shaft, a first bar, a second bar and an oil cup. The housing is internally provided with a first vane, the transmission shaft is rotationally arranged in the housing, the transmission shaft is provided with a second vane, the first vane, the transmission shaft and the second vane divide the housing into a first cavity and a second cavity, and the oil cup is connected with the first cavity and the second cavity respectively. One end of the first bar is connected to one end of the housing, the other end of the first bar is used for being connected with a wheel on one side of the vehicle, one end of the second bar is connected to the transmission shaft away from the other end of the first bar, and the other end of the second bar is used for being connected with a wheel on the other side of the vehicle. The stabilizer bar assembly and the vehicle provided by the application can ensure that all the wheels can land at the same time when the wheels run on various road conditions through the cooperation of the first bar, the second bar, the housing and the transmission shaft, and the passability and comfort of the vehicle on different road conditions are improved.

The application discloses a suspension valve group, an oil-gas suspension lifting and leveling system and an all-terrain crane. The suspension valve group comprises a working oil port A, a working oil port B, a return oil port T, an oil inlet port P and an SP port for being connected with an accumulator, and further comprises a suspension lifting control valve, a suspension lowering control valve, a suspension rapid lifting control valve, a suspension slow lifting damping hole, a suspension slow lowering damping hole and a suspension rapid lowering control valve. The suspension lifting control valve and the suspension slow lifting damping hole are connected in series between the P port and the A port of the suspension valve group, and the suspension rapid lifting control valve is connected in parallel with the suspension slow lifting damping hole. The suspension lowering control valve and the suspension slow lowering damping hole are connected in series between the T port and the A port of the suspension valve group, and the suspension rapid lowering control valve is connected in parallel with the suspension slow lowering damping hole. The application considers one-key leveling and control of suspension lifting and lowering speed, so that the vehicle can quickly lift and lower the suspension to adjust the vehicle body height under complex road conditions, and the suspension operation efficiency and the vehicle passing performance are improved.