2863 results about "Gas spring" patented technology

An adjustable mount including a bracket adapted for anchoring the bracket to a surface and an elongated link pivotally connected to the bracket. A faceplate adapted for connecting to the display screen is pivotally connected to the link. The faceplate has a rail below the link. A body is slidably mounted on the rail, and a clamp alternatively holds the body at a selected position on the rail. The mount includes a pair of elongated bars. Each bar is pivotally connected to the bracket below the link and pivotally connected to the faceplate below the link. The mount has one gas spring pivotally connected to the bracket below the link and above each bar and pivotally connected to the body. The faceplate is moveable to raise and lower the display screen. A force required to move the faceplate changes depending upon the selected position of the body on the rail.

The invention provides an air spring performance degradation characterization method and system, and the method comprises the steps: obtaining a spring stiffness physical parameter generated in a performance degradation test process of an air spring based on an air suspension test system; inputting the spring stiffness physical parameters into an air spring performance degradation model to obtain dynamic stiffness performance degradation data; the dynamic stiffness performance degradation data comprises dynamic stiffness frequency correlation data and dynamic stiffness amplitude correlation data; the air spring performance degradation model comprises a dynamic stiffness frequency correlation model and a dynamic stiffness amplitude correlation model, and the dynamic stiffness frequency correlation model is used for obtaining stiffness frequency correlation data according to air spring internal gas pressure change data in spring stiffness physical parameters; the dynamic stiffness amplitude correlation model is used for obtaining dynamic stiffness amplitude correlation data according to air bag degradation data in the spring stiffness physical parameters. According to the method, more accurate air spring performance prediction and degradation analysis results can be provided.

The invention relates to an air pressure self-adaptive control method and device for a seat suspension and a computer readable medium, the seat suspension is connected with a seat body, an air spring is arranged on the seat suspension, and the method comprises the steps that in response to the situation that a passenger sits on the seat body, the air pressure self-adaptive control device is arranged on the seat body; and the air quantity of the air spring is adjusted according to the deviation between the current height of the seat suspension and the preset balance position, so that a passenger borne by the seat body moves to the preset balance position, and the air spring is in a pressure maintaining state meeting the design requirement. The air volume of the air spring in the seat suspension can be dynamically and adaptively adjusted according to the weights of different passengers, the function that one person has one air pressure is achieved, the transmission rate of vibration is effectively reduced, and the vibration reduction effect of the seat suspension, the riding comfort and stability of the passengers and the universality and environmental adaptability of a seat suspension system are improved.

Vibration in a drill string is damped with a damping system coupled to the drill string. The damping system includes a chamber, a gas and piston in the chamber, and a mass connected to the piston. The gas defines a spring having a spring coefficient that is dependent on a volume or temperature of the chamber. The damping system is tunable in real-time by varying the volume or temperature of the chamber. In alternatives with multiple chambers interconnected to one another via ports, chamber volume at the existing pressure can be varied by selective actuation of valves between the chambers or the pressure of the gas can be varied by compressing or expanding a connected bellows or by heating or cooling the temperature of the gas. The damping system can selectively damp both radial and torsional vibrations.

The invention belongs to the technical field of automobile suspensions, and particularly relates to a gas damping independent air spring which comprises a base, an air bag, a piston and a protective cylinder. The open end of the piston is connected with the upper end of the air bag; the piston is provided with a partition plate dividing the gas containing cavity into a main gas chamber and an auxiliary gas chamber, the main gas chamber is located on the side, close to the gas bag, of the partition plate, and the auxiliary gas chamber is located in the piston cavity. A compression throttling hole and a stretching throttling hole which are communicated with the main air chamber and the auxiliary air chamber are formed in the partition plate; a first elastic valve plate for sealing the compression throttling hole is arranged in the auxiliary air chamber, and a second elastic valve plate for sealing the stretching throttling hole is arranged in the main air chamber. The pressure difference between the main air chamber and the auxiliary air chamber is used for controlling opening and closing of the compression throttling hole and the stretching throttling hole, so that effective air containing cavities of the air spring are rapidly switched, and the rigidity of the air spring is adjusted in time. The air flow is limited through the compression throttling hole and the stretching throttling hole, and damping force is provided for the telescopic movement of the air spring.

The invention discloses a tool for assembling an air spring sealing assembly, and the tool is characterized in that the tool comprises a positioning mechanism which is used for positioning and fixing an air spring body; the press fitting mechanism comprises a guide sleeve and a pressure head; the guide sleeve is provided with a vertically-through guide cavity, and the guide sleeve is driven by a first driving piece to move up and down and can cover the mounting end part in the down stroke; the pressure head is coaxially arranged above the guide sleeve, and is driven by a second driving piece to independently move up and down; the clamp spring guide-in seat is arranged at the top of the guide sleeve, a guide-in cavity penetrating up and down is formed in the clamp spring guide-in seat, and the guide-in cavity is coaxially communicated with the guide cavity; and the snap spring pre-tightening mechanism is used for performing radial extrusion on the snap spring placed at the port position of the guide-in cavity, so that the snap spring falls into the guide-in cavity after being tightened. The press-fitting device has the advantages that the press-fitting of the sealing cover and the snap spring is combined in one step, the problems of deflection, popping and the like of the snap spring in the assembling process are effectively solved, operation is simple and safe, and assembling efficiency is high.

The invention belongs to the technical field of vehicle control, and particularly relates to a stiffness regulating valve for a multi-cavity air spring for a passenger car, comprising a communicating air passage, one end of the communicating air passage is used for communicating with the air spring, the side wall of the communicating air passage is provided with an air port, and the joint of the communicating air passage and the air spring is provided with a first sealing part; the rigidity valve shell is fixedly connected to the other end of the communicating air channel, the communicating air channel and the rigidity valve shell are provided with second sealing parts, and the air port is located on the outer side of the rigidity valve shell; the piston is used for controlling the opening degree of the air port, the piston is arranged in the communicating air channel in a sliding mode, and a third sealing part is arranged between the communicating air channel and the piston; the sliding driving part is used for driving the piston to slide in the communicating air channel; the output end of the speed reduction part is in transmission connection with the sliding driving part; the input end of the driving part is in transmission connection with the input end of the speed reduction part. When the air spring is used, the opening degree of the air port is controlled by driving the piston to move in the communicating air channel, and then the rigidity of the air spring is adjusted.

Rear cargo tray systems to provide extra storage within a vehicle and related methods are provided herein. A rear cargo tray system for rotatable securement to an interior portion of a vehicle can include a tray body and first and second tray brackets that provide support surfaces on which the tray body can rest. The rear cargo system can comprise first and second hinges secured to the tray body and the respective first and second tray brackets and first and second gas springs anchored to the respective first and second tray brackets with piston arms that can be secured to the tray body. Further, the rear cargo system can comprise at least one latch secured to the tray body distal from the first and second hinges configured to engage a locking plate on one of the first or second tray brackets.

The invention discloses a low-vibration long-service-life rotary split type Stirling cryocooler, relates to the technical field of cryocoolers, and aims to solve the technical problems that reciprocating movement of a single compression piston has rotary inertia force, and a connecting rod in the single compression piston swings during movement, so that large vibration is generated. Comprising a compressor body and an expansion machine body which are arranged in a split mode. The motion states of the two compression pistons can be the same all the time through the symmetrical centering crank sliding block mechanisms which are completely equal in size and weight, then the momentum of the compressor is balanced, and finally reciprocating and rotating inertia force of the crank sliding block mechanisms is completely eliminated, and only extremely small vibration is generated. And a compressor is assisted to generate periodic pressure wave driving, and a gas spring is formed by using a dynamic seal, so that the discharger and the gas spring supported by the discharger form a forced vibration system, the formed damping force can generate a proper phase difference, and finally, an effective refrigeration effect is generated.

The invention relates to the technical field of vehicle suspension testing, and particularly discloses an air spring suspension durability testing device, which is used for vertical static, transverse dynamic and longitudinal dynamic durability testing of an air spring suspension, and comprises an upper mounting unit, a lower mounting unit, a lower mounting unit and a lower mounting unit, and is characterized in that the upper mounting unit comprises an outer cylinder and an inner ejector rod which are nested, and the outer cylinder is matched with an upper piston rod of the air spring suspension; the posture adjusting unit comprises a fixed disc fixed to the base and a movable disc movably arranged on the fixed disc, a transverse guide groove and a longitudinal guide groove which are perpendicularly intersected are formed in the fixed disc, and a first guide block and a second guide block are arranged on the lower end face of the movable disc; and the lower mounting unit is used for being matched with a lower piston rod suspended by the air spring. Through cooperation of different states of the first guide block and the second guide block in the movable disc, the degree of freedom of the movable disc relative to the fixed disc is adjusted, so that durability testing of the air spring suspension in different working condition simulation states is realized, and the performance of the air spring suspension in an actual working condition is fully reflected.

The embodiment of the utility model discloses a valve opening device and baking equipment, and relates to the technical field of battery production equipment. The valve opening device comprises a base, a movable mounting piece, a valve opening unit and an air spring. The movable mounting piece and the base are arranged at an interval. The valve opening unit is arranged on the side, away from the base, of the movable installation piece. And the air spring is connected with the base and the movable mounting piece. The air spring can be used for driving the movable installation part to be away from or close to the base. According to the valve opening device, the air spring is adopted to drive the valve opening unit to open the switch valve, the air spring has the characteristic of high temperature resistance, in the high-temperature and vacuum environment, the air spring provides driving force through expansion and contraction of the air bag of the air spring, the integrity is better, and therefore the good air tightness is achieved; the possibility of generating a leakage problem is relatively low, so that the valve opening unit can be stably driven to open the switch valve of the battery, namely, the reliability of the valve opening device is improved.

The present invention relates to a rebound composite electromagnetic energy dissipation device for reducing sloshing with a liquid-filled ball for a large liquefied natural gas (LNG) storage tank. When the liquid surface sloshes around, the gas spring is pulled by the steel strand to produce vertical displacement and provide a restoring force, and the vertical displacement of the gas spring drives the fan blades on the sleeves of the ball screws at the bottom to rotate in the damping fluid, consuming energy. The present invention uses hydraulic transmission instead of mechanical transmission of traditional piston motion, and the horizontal pistons produce horizontal displacement in the case of pressure unbalance, thus increasing the flexibility of horizontal piston motion; magnets are arranged in the horizontal slideways and the horizontal pistons to intensify the motion of the horizontal pistons and the relative motion between the horizontal pistons and the interior.

A powered fastener driver including a driver blade movable from a top-dead-center (TDC) position toward a bottom-dead-center (BDC) position for driving a fastener into a workpiece, a nosepiece through which the fastener is driven into the workpiece that is configured to guide the driver blade and the fastener into the workpiece, and a lifting assembly for providing torque to move the driver blade from the (BDC) position toward the TDC position. The lifting assembly includes a rotary lifter for engaging the driver blade to move the driver blade toward the (TDC) position. The rotary includes a body having a central aperture, a flange radially extending from the body that defines an outer radial profile configured to contact the driver blade to return the driver blade from the BDC position toward the TDC position, and a non-rotating mounting shaft coupled to the central aperture to rotatably support the rotary lifter thereon.

The invention discloses a compact rigidity damping inerter self-control type hydro-pneumatic spring and a working method. The bottom of the lower end of a plunger of a hollow structure is sealed, is downwards connected with a wheel and extends into an oil cylinder from bottom to top, the top of the upper end of the plunger is fixedly connected with a piston, and a row of plunger holes are formed in the upper portion of the plunger; the upper part of an upper cavity of the oil cylinder is sequentially connected with a damper and a small oil-gas chamber; the lower part of a lower cavity is sequentially connected with an inerter pipe, an adjustable throttle valve and a large oil-gas chamber; the upper end of the self-control device outer cylinder is fixedly connected with the piston; a self-control device inner barrel capable of moving up and down is coaxially sleeved in the self-control device outer barrel, the lower end of the self-control device inner barrel is sealed, and the upper section of the self-control device inner barrel is hinged to the oil cylinder upper end cover; an inner barrel upper row oil through hole formed in an inner barrel of the automatic control device is always located in an upper cavity of the oil cylinder, the upper edge of an inner barrel middle row oil through hole is aligned with the upper edge of an outer barrel upper row oil through hole, and the lower edge of an inner barrel lower row oil through hole is aligned with the lower edge of an outer barrel lower row oil through hole. The rigidity is changed, and the damping and the inerter can also be changed.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle and an outer rim surrounding the inner rim. The wheel assembly may also include gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension for relative movement between the inner rim and the outer rim. Each of the gas springs may have a controllable gas pressure. The wheel assembly also includes a wheel rotational position sensor, a vehicle operator control input interface, and a controller configured to control the gas pressure in each of the gas springs in a pattern in response to the wheel rotational position sensor and vehicle operator control input interface to assist in one of overcoming a rolling resistance of the wheel and a braking of the wheel.

The invention belongs to the technical field of winding equipment, and particularly relates to a flexible vibration isolation winding machine and a winding method thereof.The flexible vibration isolation winding machine comprises a winding rack, a fixed disc is fixedly connected to the upper end of the winding rack, a rotating rod is rotationally connected to the fixed disc in a penetrating mode, and the rotating rod is sleeved with a winding roller; a first supporting rod is fixedly connected to the upper end of the winding rack, a first motor used for driving the rotating rod is fixedly connected to the side wall of the first supporting rod, a fixed wheel is arranged at the upper end of the winding rack, and the fixed wheel is sleeved with a take-up roller used in cooperation with the winding roller; and the buffering mechanism comprises a plurality of sliding grooves formed in the fixed disc in a circumferential array mode, and transmission plates are linearly and slidably connected into the sliding grooves. By arranging the buffering mechanism, the rigidity of the gas spring can be continuously reduced along with winding work, so that the vibration isolation performance of the gas spring is improved, and the vibration isolation performance is always matched with the vibration amplitude of the winding roller.

The invention relates to the technical field of spring performance testing, in particular to an air spring shock absorber performance testing device which comprises an L-shaped mounting base, a limiting mounting plate, a clamping mechanism and a compression assembly, the limiting mounting plate is arranged on the horizontal section of the L-shaped mounting base, and the clamping mechanism is mounted on the front end face of the limiting mounting plate; according to the air spring shock absorber compression device, multiple positions of an air spring shock absorber are limited, clamped and fixed from bottom to top through the clamping mechanism, and the upper portion of the air spring shock absorber can be clamped and limited in a sliding mode all the time in the compression process through cooperation of a limiting clamping piece and a limiting sliding piece; the stability of the air spring shock absorber is greatly improved, the rotating motor, the limiting mounting plate and the locking assembly are matched to drive the air spring shock absorber to adjust the placement angle and then stably lock the air spring shock absorber, so that compression tests can be performed on the air spring shock absorbers arranged at different angles, and the comprehensiveness of the compression tests is improved.

A powered fastener driver including a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece. A driver may include a lifting assembly for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position, the lifting assembly including a rotary lifter configured to be selectively engageable with the driver blade, the rotary lifter having a plurality of lift pins and a roller disposed on at least one of the lift pins, wherein the roller includes a plurality of cam portions defined by cup-shaped recesses having a first radius oriented parallel to a rotational direction of the roller and a second radius perpendicular to the first radius, and wherein the driver blade includes a lift tooth having a crown disposed thereon, the crown configured to be engaged with at least one of the plurality of cam portions.

A single-leg height-adjustable table with rotation and height-adjustment functions comprise a table frame comprising a crossbar; a side tabletop fixed on the crossbar, a turnover tabletop rotatably connected with the crossbar, an angle adjuster comprising a first base and a gas spring connected with the first base; wherein the first base is fixed on the bottom surface of the turnover tabletop, and one end of the gas spring is rotatably connected with the crossbar.

The present invention relates to the technical field of rail transit evacuation mechanisms, and particularly to a new type of side door lifting evacuation ladder for urban rail vehicles; it includes a frame assembly, a driving mechanism, a rotating arm assembly, a manual operation device, and a pedal assembly: the frame assembly includes a frame structure, a guide rail slider pair, and a gas spring. The guide rail slider pairs are respectively fixed on both sides of the frame structure to guide the up and down sliding of the pedal assembly. One end of the gas spring is hinged to the frame structure, and the other end of the gas spring is hinged to the first-level pedal of the pedal assembly. The structure achieves the effect that the lifting evacuation ladder can be automatically opened and closed, with simple operation and high automation degree. At the same time, it can be used in emergency situations such as power failure, greatly improving the train's escape and evacuation ability.

A truck bed mounted carrier system includes a frame assembly installable in a truck bed with lateral supports and outer main supports, inner supports that slide within the outer main supports, a center outer support, and a second inner support that slides within the center outer support. A carrier frame coupled to the frame assembly extends from and retracts into the truck bed, supported by radius supports that provide structural integrity when extended. The system features a pulley assist mechanism with gas springs that creates a counterbalance force, a mechanical drive assembly with sprocket and roller chain for movement control, and deployable transport stands for ground support during loading operations. Adjustable bed rail struts with locking mechanisms secure the system to the truck bed without permanent modification. Low-friction materials and strategically positioned slides ensure smooth operation throughout the extension and retraction cycles.

The invention provides a nitrogen spring pressure monitoring device, a nitrogen spring pressure monitoring method and processing equipment. The nitrogen spring pressure monitoring device comprises a pressure monitoring assembly and a collector, the pressure monitoring assembly is electrically connected with the collector through a transmission line, the pressure monitoring assembly is connected with a nitrogen spring located in the mold shell through a pipeline, and the pressure monitoring assembly is used for monitoring pressure data of the nitrogen spring and transmitting the pressure data to the collector; and the collector is electrically connected with the press machine through a transmission line and is used for triggering the press machine to execute corresponding operation according to the pressure data. The pressure of the nitrogen spring can be monitored, and the collector is electrically connected with the pressure monitoring assembly and the press machine in a wired mode through the transmission lines, so that the propagation speed of electric signals among the pressure monitoring assembly, the collector and the press machine is high; therefore, when the pressure of the nitrogen spring is abnormal, the press machine can execute shutdown, alarm shutdown or alarm non-shutdown operation in time.

The deep foundation pit drainage equipment comprises an isolation cover, an inner cover is welded to the bottom end of the inner side of the isolation cover, three spiral sliding grooves are formed in the surface of the outer side of the inner cover, a rotating ring is embedded in the top end of the inner cover in a clamped mode, three sliding blocks are welded to the inner side of the rotating ring, and the sliding blocks are embedded into the inner sides of the spiral sliding grooves in a sliding mode; according to the scheme, through the structures of the inner cover, the spiral sliding groove, the rotating ring, the rotating groove, the lower push plate, the supporting rod, a waterproof air cylinder and an air spring seat, the water pumping and filtering functions are achieved, compared with the prior art, the water pumping and filtering device has the function of automatically cleaning a filtering mechanism, and the water pumping and filtering device is convenient to use and high in practicability. And through mutual cooperation of a waterproof air cylinder, a lower push plate, a rotating groove, a rotating ring and a spiral sliding groove, the effect of scraping blocked silt is achieved, and during the period, a supporting rod and an air spring base achieve the supporting and pushing effects.

The utility model discloses an air spring support seat, an air spring and a vehicle, the air spring support seat comprises an upper air chamber assembly, a lower air chamber assembly, an upper air chamber assembly and a lower air chamber assembly, the upper air chamber assembly is provided with a first accommodating cavity; the top rubber assembly comprises an elastic body, the elastic body is provided with a first flange, the elastic body comprises a first cavity and a second cavity which are separated by the first flange, and at least one groove is formed in the first flange; the top rubber assembly is arranged in the first containing cavity, the first flange is attached to the bottom wall of the first containing cavity, and the first cavity is communicated with the second cavity through the groove. According to the technical scheme, the elastic body can be prevented from moving in the radial direction, and therefore the durability of the top rubber assembly is improved.

The rigidity-adjustable air spring comprises a seat body and a leather bag, the seat body comprises a first connecting piece and a second connecting piece, and an air spring structure with an air bag cavity in the middle is defined by the first connecting piece, the second connecting piece and the leather bag; a partition plate is arranged in the middle of the air bag cavity and divides the air bag cavity into an upper air bag cavity and a lower adjusting cavity. At least two capacity increasing cavities are arranged in the lower adjusting cavity, at least one capacity increasing cavity is communicated with the upper air bag cavity, and the internal volume of the capacity increasing cavity can be adjusted; the at least one capacity increasing cavity and the upper air bag cavity can be controlled to be communicated or separated. The internal volume of the air spring can be adjusted and changed, and the rigidity of the air spring can be changed by adjusting the internal volume.

The invention discloses a cold heading forming method for an oil cylinder for a progressive gas spring by upsetting firstly and then gradually extending. The cold heading forming method comprises the following steps: (1) preparing and shaping raw materials; (2) upsetting; (3) indenting; 4) backward extrusion stretching; (5) thin-wall reducing extension one-time forming is carried out; and (6) thin-wall reducing extension secondary forming is carried out. In combination with the characteristics of small overall size, large length-diameter ratio and thin wall and batch production of the oil cylinder for the gas spring, a part with a complex structure is divided into a plurality of simple stations by adopting a method of upsetting first and then gradual extension, and through a process of upsetting, combined extrusion and multi-step diameter-reducing stretching, the length-diameter ratio of the oil cylinder for the gas spring is greatly reduced. And a reducing amount distribution formula based on a strain hardening index and a flow stress model is introduced, so that gradual reduction of the inner and outer diameters of the cylinder body and wall thickness homogenization control are realized. According to the method, on one hand, the product wall thickness uniformity is improved, and the local wall thickness abnormity condition is avoided; and on the other hand, due to the fact that the five-station progressive one-time forming technology is adopted, the auxiliary clamping time is greatly shortened, and therefore the forming efficiency is improved.

The invention discloses a waterproof ventilation plug and an automobile, and belongs to the technical field of automobiles. The waterproof ventilation plug comprises a valve seat, a valve element assembly, an exhaust spring, a ventilation film framework, a waterproof ventilation film and a ventilation plug cover; the upper portion of the valve seat and the lower portion of the breathable film framework are fixed and connected in a sealed mode to form an internal hollow structure, the valve element assembly and the exhaust spring are located in the internal hollow structure, and the exhaust spring is located at the top end of the valve element assembly. A breathable film installation hole is formed in the upper portion of the breathable film framework and used for installing the waterproof breathable film, the breathable plug cover is installed on the upper portion of the breathable film framework and wraps the structure, and the inner top face of the breathable plug cover is rigidly and fixedly connected with a plurality of top columns on the breathable film framework. The waterproof ventilation plug can achieve two-way ventilation of a transmission box body, can effectively prevent water and dust, has good ventilation performance after being durable, effectively avoids the defects of a normally-open ventilation plug, a one-way valve type ventilation plug and a waterproof ventilation film type ventilation plug in the current market, and is suitable for popularization and application. And the reliability of the oil-cooled hybrid transmission and the oil-cooled electric drive system is ensured.

The invention relates to the technical field of gas spring load protection, in particular to a gas spring which comprises a barrel, a piston and a locking assembly, the piston is provided with a first flow channel, and the barrel is provided with a containing cavity. The piston is located in the containing cavity and can move in the first direction, and the piston divides the containing cavity into a first liquid cavity and a second liquid cavity in the first direction. The piston and the side wall of the containing cavity define a second flow channel, the first liquid cavity, the first flow channel, the second flow channel and the second liquid cavity are sequentially communicated, and the second flow channel is further communicated with the first liquid cavity and the second liquid cavity. And the locking assembly is located in the second flow channel, and the locking assembly is configured to be capable of sealing the second flow channel and relatively sealing the first flow channel and the second flow channel when the moving speed in the first direction is larger than a preset value. The supporting function of the gas spring can be maintained.

The invention discloses a building external wall insulation board convenient to install, and relates to the technical field of building insulation materials, the building external wall insulation board comprises an insulation board body, a vacuum insulation board and expansion bolts, one side of the insulation board body is provided with the vacuum insulation board, and one side of the vacuum insulation board is attached to a wall in a butt joint mode through an adhesive. According to the building external wall insulation board convenient to install, the butt joint mechanism, the self-locking mechanism and the tightening mechanism are arranged in a linkage mode, a fastening pin of the butt joint mechanism is adjusted to drive an inner lock hook and an outer lock hook to clamp a limiting block, and the self-locking mechanism moves along with a guide piece to enable a swing arm to rotate to drive an air spring rod to lock an included angle between a wide supporting arm and the outer lock hook; and a limiting block is fastened through synchronous movement of a clamping plate of the tightening mechanism and an inner lock hook, so that the clamping plate extrudes and pushes two lifting pins to be inserted into the inner wall of a positioning hole of the vacuum heat insulation plate to be used for increasing the anchoring strength, and then it is guaranteed that the outer wall heat insulation plate has the anti-falling protection stable installation effect.

The invention discloses a drive-by-wire electromagnetic suspension of a heavy-duty vehicle, which belongs to the technical field of vibration reduction of the heavy-duty vehicle and comprises an upper joint and a lower joint which are arranged up and down, the shell is fixedly connected with the lower joint through a lower end cover; one end of the air spring is fixedly connected with the upper connector, and the other end of the air spring is fixedly connected with the shell; the planetary roller screw kinematic pair and the screw nut are positioned in the shell and are rotatably connected with the shell; one end of the lead screw is in threaded connection with the upper joint, and the other end extends into the shell and is matched with the lead screw nut; the permanent magnet is embedded into the outer side of the lead screw nut; and the coil winding is arranged corresponding to the permanent magnet and fixedly mounted on the inner wall of the shell, and the coil winding is matched with the permanent magnet so as to have a generator mode or a motor mode. The roller lead screw and the motor are integrated, the size is greatly reduced, the bearing capacity is improved, the angle module is suitable for a limited space of a heavy-duty vehicle, multiple control modes can adapt to complex working conditions, and the overall performance is improved.