3219 results about "Air spring" patented technology

The embodiment of the invention provides an air supply system and an air supply method of an air suspension. The air supply system of the air suspension comprises an air storage tank, a plurality of air springs, an air supply valve body unit, a dryer, a heating element, an electronic control unit and a humidity sensor. The air storage tank is used for storing compressed air; the air spring is used for inputting high-pressure gas to each wheel of the vehicle; the air supply valve body unit comprises a reversing valve; the reversing valve is arranged on an air channel, so that the air supply system is driven to be switched between the air suction mode and the reverse blowing mode through reversing of the reversing valve; the cavity of the dryer is communicated with the air supply valve body unit through an air channel; the heating element is arranged in a cavity of the dryer, the humidity sensor is arranged on the air channel, and the humidity sensor corresponds to the electronic control unit in a signal mode. Therefore, the air supply system of the air suspension has the advantage that the regeneration efficiency of the dryer is improved.

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 discloses a high-performance ozone-resistant air spring and a preparation method thereof. An inner-layer rubber material and an outer-layer rubber material of the air spring are mainly prepared from the following components: chloroprene rubber, natural rubber, butadiene rubber, an anti-aging agent AW-66, an anti-aging agent 4010NA, an anti-aging agent 4020, microcrystalline wax, N660 carbon black, naphthenic oil, zinc oxide, CZ and insoluble sulfur. The preparation method comprises the steps of first-stage mixing, rubber discharging, standing, second-stage mixing, rubber discharging, standing, rubber sheet calendering, blastocyst forming, wrapping the blastocyst on the surface of a capsule, and performing high-pressure nitrogen vulcanization to form the air spring. The chloroprene rubber, the natural rubber and the butadiene rubber are blended and modified, so that the rubber has the following characteristics that the ozone resistance and the weather aging resistance are remarkably improved; the properties such as tensile strength, stress at definite elongation and tear resistance are improved; the production process properties such as extrusion and calendaring properties are improved, the deflection resistance of the rubber material is improved, and the service life of the product is prolonged.

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.

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.

The multifunctional acoustic device is formed by periodically arranging unit cells in the horizontal direction, and each unit cell comprises an upper frame body, a lower frame body and a vibration absorption sandwich layer located between the upper frame body and the lower frame body; the upper frame body is provided with a through hole; the vibration absorption sandwich layer comprises a central cantilever beam located at the transverse center position, a sandwich plate surrounding the periphery of the central cantilever beam and fixed between the upper frame body and the lower frame body, and vibrator mass blocks arranged above and below the central cantilever beam; the sandwich plate is connected with the central cantilever beam through a plurality of L-shaped beams; and the plurality of L-shaped beams surround the periphery of the central cantilever beam. The lattice sandwich structure is used as a basic frame, a local resonance system with a spring mass part is formed, a sub-wavelength elastic wave band gap frequency band is obtained, a low-frequency vibration reduction effect is generated, holes are formed in the upper frame body, the remaining part in the structure is used as an air spring, a Helmholtz resonant cavity is formed, and meanwhile low-frequency vibration reduction and broadband sound absorption are achieved.

The invention provides an air spring automatic assembly production line and an automatic assembly method. The air spring automatic assembly production line comprises an automatic assembly area, a man-machine cooperation area, a routine test area and a post-processing area which are arranged in sequence. The man-machine collaboration area comprises a collaboration area robot, and collaboration assembly equipment and collaboration feeding and discharging equipment which are arranged along the two sides of the collaboration area robot; the automatic assembly area comprises an assembly area robot, and assembly equipment and assembly loading and unloading equipment which are arranged around the assembly area robot; the routine test area comprises a test area robot, and test equipment and test feeding equipment which are arranged around the test area robot. The automatic assembly method of the automatic assembly production line for the air springs comprises the steps of man-machine cooperation assembly, automatic assembly, automatic detection, post-treatment and the like. According to the air spring automatic assembly production line and the automatic assembly method, the problems that an existing air spring production scheme is low in automation degree and insufficient in universality are solved.

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 invention provides a free boundary supporting system for a horizontal modal test of a large rocket. The free boundary supporting system at least comprises a rack car, a pressure container, a free membrane type air spring and a control assembly. The rack car at least comprises a bottom truss and a top truss, and the bottom truss is provided with a moving device; the pressure container is specifically a gas storage container located between the bottom truss and the top truss, and the top of the pressure container is provided with a sealing flange connector. The free membrane type air spring is arranged on the upper end face of the top truss, the bottom of the free membrane type air spring communicates with the pressure container through the sealing flange connector, and a bracket used for supporting a rocket is arranged on the top of the free membrane type air spring. The control assembly at least comprises an acquisition module, a controller and an execution module which are in communication connection in sequence; freedom degrees of translation, rotation and torsion of the rocket in a modal test are provided by the free membrane type air spring.

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.

The invention discloses vacuum ring pushing equipment and method for assembling a rear air spring. The vacuum ring pushing equipment comprises a rack base, and a deck plate is installed at the upper end of the rack base; a capsule skin vacuum adsorption assembly and a capsule skin bulging assembly are arranged above the deck plate, and the capsule skin bulging assembly and the capsule skin vacuum adsorption assembly are arranged side by side; a supporting ring feeding assembly is further arranged on the table top plate, and a ring conveying assembly is arranged on one side of the supporting ring feeding assembly. The airbag skin is fixed in a vacuum adsorption mode, and the problems of airbag deformation and abrasion caused by a traditional forced pushing mode are effectively avoided; according to the bag skin vacuum adsorption assembly, through the design of a vacuum cylinder and a forming adsorption cylinder, the bag skin is accurately adsorbed and fixed according to the negative pressure adsorption principle, the stability of an air bag in the assembling process is guaranteed, the damage risk caused by physical contact is reduced, and it is guaranteed that the bag skin is not damaged in the supporting ring assembling process; and the assembly precision and the qualified rate of finished products are greatly improved.

The invention discloses a dust cover and an air spring. The dust cover comprises a guide cylinder, a leather bag, a dust cover body, an exhaust groove, a hoop, a thickened wall, an upper top seat, an edge, a piston, a mounting part and a groove, the exhaust of the dust cover is designed at the lower part, so that the exhaust of the dust cover is smoother when the air spring moves; dust is prevented from entering and discharging, and the service life of the leather bag is prolonged; and due to the flexibility of the rubber, the risk of howling caused by unsmooth exhaust during movement of the air spring is reduced, and the NVH effect is improved.

The invention belongs to a diaphragm type air spring stiffness valve in the technical field of air spring systems. The diaphragm (13) is sleeved on the push rod (17) from one side of the push rod big head (17-2) through a central hole (13-3) of the diaphragm central hard core part (13-2), the diaphragm convex part (13-1) falls into the front yoke sleeve diaphragm groove (7-1) of the front yoke sleeve (7), the gland (14) is pressed into the front yoke sleeve (7) in an interference manner and tightly presses the diaphragm convex part (13-1), and the pressing plate (12) is pressed on one side of the push rod big head (17-2) in an interference manner and tightly presses the diaphragm central hard core part (13-2). The diaphragm type air spring stiffness valve is simple in structure and reliable in control, good sealing performance is guaranteed in the moving process of the valve element, meanwhile, friction resistance can be remarkably reduced, and the action of an electromagnetic valve is smoother.

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.

Air springs for bicycle components are described herein. An example air spring includes a tube, a first sealhead coupled to the tube, a second sealhead coupled to the tube such that a sealed pressure chamber is formed in the tube between the first and second sealheads, and a seal coupled to the second sealhead. The second sealhead and the tube are coupled along an axial interface locking length. The tube has a vent port. The seal is spaced from the vent port by a port seal gap that is less than the axial interface locking length such that as the second sealhead is being decoupled from the tube, the seal loses sealing contact with the inner surface to enable at least a portion of the sealed pressure chamber to be equalized with atmospheric air before the second sealhead is fully decoupled from the tube.

The invention provides a vehicle attitude control device and method, and relates to the technical field of vehicle control. The device comprises the steps that a brake-by-wire system collects the wheel speed of each wheel of a vehicle and obtains attitude data, deviation calculation is conducted on the attitude data and the wheel speeds, an attitude deviation value is obtained, and the vehicle state of the vehicle is matched from a stability degree table according to the attitude deviation value; the air suspension system collects suspension height signals of all wheels of the vehicle, when the brake-by-wire system judges that the state of the vehicle is an unstable state, the suspension height signals of all the wheels are adjusted according to adjusting rules, and height adjusting signals corresponding to all the wheels are obtained; the air suspension system adjusts the height of the air spring of the corresponding wheel according to the plurality of height adjustment signals. The vehicle is jointly controlled through the brake-by-wire system and the air suspension system, the height of an air spring of the vehicle is adjusted, the vehicle is prevented from rolling over due to the unstable gravity center, and the safety of the vehicle is improved.

A double-piston membrane type air spring comprises a shell, an upper installation base used for being fixedly connected with a vehicle body and a lower installation base used for being fixedly connected with a suspension swing arm, the upper installation base is provided with a first piston installation column extending downwards, and a first piston is fixedly arranged on the first piston installation column. The lower mounting seat is provided with a second piston mounting column extending upwards, a second piston is fixedly arranged on the second piston mounting column, a space distance is reserved between the first piston mounting column and the second piston mounting column, and a rubber air bag is arranged between the first piston and the second piston and located in the shell. The upper end of the rubber air bag is fixedly connected with the first piston installation column, the lower end of the rubber air bag is fixedly connected with the second piston installation column, the axial length ratio of the first piston installation column to the second piston installation column is 2: 1-4: 1, the axial length of the first piston is the same as that of the first piston installation column, and the axial length of the second piston is the same as that of the second piston installation column.

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.

The invention discloses a seat height adjusting valve mechanism, relates to the technical field of seat height adjusting valve mechanisms, serves as an integrated adjusting structure to realize height adjustment and suspension adjustment of a seat, and has the advantages of high integration level, high precision, long stroke, small size and high utilization rate. According to the technical scheme, an inner cavity of the valve body is hollow, the valve body is used for controlling inflation and deflation of an air spring, a piston shaft is arranged in the middle of the inner cavity of the valve body, a movable opening matched with the piston shaft is formed in the end, facing a support, of the valve body, one end of the piston shaft penetrates out of the valve body through the movable opening and is in sliding connection with the valve body, and a valve element is fixed to the other end of the piston shaft. The valve body is provided with an air inlet pipe communicated with an external air source, an air bag connector pipe communicated with the air spring and an air discharging pipe for discharging air in the air spring, and an inner cavity of the valve body is provided with a control assembly matched with the piston shaft and the valve element to control air flow.

The invention discloses a photovoltaic curtain wall pressure resistance detection device and detection method, and relates to the related field of photovoltaic curtain wall detection. According to the invention, through the arrangement of the limiting strips, stable positioning of the photovoltaic curtain wall before testing is ensured, and testing errors caused by offset are avoided; the displacement mechanism is matched with the pressure detection device, accurate pressing and real-time detection of test pressure are achieved, so that the reliability of pressure resistance data is guaranteed, when the curtain wall is broken, the supporting plate can be rapidly overturned and in butt joint with a collection station under linkage of transmission structures such as a driving motor, a synchronous belt and a pull arm, the broken curtain wall is smoothly poured, and the production efficiency is improved. Meanwhile, the supporting plate is automatically reset under the action of the air spring, residual fragments are removed in cooperation with external blowing equipment, secondary pollution and clamping stagnation are avoided, and the cleanliness of the testing environment is guaranteed.

The utility model discloses a normally open solenoid valve for an automobile multi-cavity air spring, which comprises a shell, a framework arranged in the shell, an enameled wire wound on the outer side of the framework, a magnetism isolating tube arranged in an inner hole in the middle of the framework, a movable iron core arranged in the magnetism isolating tube, and a cushion block assembly arranged between the magnetism isolating tube and the end part of the movable iron core, an electrical interface is installed at the end of the shell, a valve seat is installed at the second axial end of the shell, a base is installed between the valve seat and the framework, an ejector rod piece capable of moving axially is arranged at the position, corresponding to the valve port, between the base and the valve seat, the first end of the ejector rod piece penetrates through the base to abut against the movable iron core, and a connecting socket is arranged at the end of the framework. The connecting socket is connected with a PIN needle in the electrical interface, a limiting claw is arranged at the side end of the PIN needle, and after the limiting claw is bent, the enameled wire is pressed and fixed on the PIN needle and is subjected to spot welding. The electromagnetic valve can solve the problems that an electric power connection structure of an existing electromagnetic valve is complex, and power connection is not reliable.

A velocity dependent flow control unit for an air spring. The velocity dependent flow control unit including a compression fluid pathway with a one-way valve and a rebound fluid pathway with a one-way valve. The velocity dependent flow control unit can be fixed and coupled between two additional air chambers of the air shock. A spring curve of said air shock can be dependent upon a velocity of a compression of the air shock and can be controlled by a flow rate of a fluid passing the two additional chambers and the velocity dependent flow control unit.

The utility model relates to an electric control valve, an air spring, an active suspension and a vehicle. The electric control valve comprises a shell, a transmission terminal and a sealing seat, and the transmission terminal is located at the axial end of the shell; the sealing seat is arranged at one end, close to the transmission terminal, of the shell, and the sealing seat is in sealing connection with the transmission terminal and the shell. According to the electric control valve, the sealing seat is connected with the transmission terminal and the shell in the sealed mode so that the interior of the shell can be isolated from the outside, it can be prevented that outside impurities or water invades and influences normal work of important components such as a coil in the shell, the sealing performance of the electric control valve is improved, and the electric control valve has higher reliability.

The invention belongs to the technical field of automobile suspensions, and particularly relates to an independent type double-cavity air spring which comprises a base, an air bag and a piston, and the base, the air bag and the piston define a closed air containing cavity. A column cavity with a downward opening is formed in the piston, a plunger in axial sealing sliding fit with the inner side wall of the piston is arranged in the column cavity, the plunger divides the gas containing cavity into a main gas chamber and an auxiliary gas chamber which are isolated from each other, the main gas chamber is located on the lower side of the plunger, and the auxiliary gas chamber is located on the upper side of the plunger. The piston is provided with a first inflation inlet communicated with the main air chamber and a second inflation inlet communicated with the auxiliary air chamber. The upper end of the push rod is connected to the plunger, and the lower end of the push rod is connected to the base; the axis of the push rod and the axis of the piston inner column cavity are arranged in the same direction. The rigidity adjusting range of the air spring is expanded, the high-pressure air in the auxiliary air chamber provides buffering limiting for compression movement of the air spring, thrust is provided for reset movement of the air spring and a vehicle body to enable the vehicle body to reset quickly, and the driving comfort of the vehicle is improved.

The embodiment of the invention provides an air supply system and an air supply method of an air suspension with multiple working modes. Wherein the air supply system comprises an air storage tank, a plurality of air springs, an air supply valve body group, a temperature pressure sensor, a vacuum suction valve pipeline, an air inlet valve pipeline and a negative pressure pipeline. The air supply valve body group is provided with a first ventilation port, a second ventilation port and a plurality of third ventilation ports, the second ventilation port is communicated with the air storage tank, and the plurality of third ventilation ports are communicated with the plurality of air springs in a one-to-one correspondence manner; the vacuum suction valve pipeline comprises a vacuum generator, the air inlet valve pipeline comprises a dryer, a first ventilation port of the air supply valve set is communicated with the outside through the vacuum suction valve pipeline and the air inlet valve pipeline which are arranged in parallel, and the vacuum generator is selectively communicated with the dryer through a negative pressure pipeline. Therefore, the air supply system provided by the embodiment of the invention has the advantages of reducing the regeneration temperature of the drying agent and prolonging the service life of the electric appliance element.

The invention discloses a membrane type air spring parameter identification and dynamic mechanical property calculation method and a medium. The method comprises the following steps: establishing an air spring parameter identification and mechanical property calculation model; acquiring static performance data of the air spring; acquiring structural calculation parameters of the air spring; acquiring quasi-static performance data of the air spring; according to the static and quasi-static mechanical property test results of the air spring, the structural calculation parameters and the thermodynamic parameters of the air spring can be identified, the identified parameters can be effectively applied to the mechanical property calculation model of the air spring to calculate the dynamic characteristics, the test times can be effectively reduced, and the test efficiency is improved. And a reference basis is provided for design optimization of the air spring.

A power tool includes an air spring cylinder, a piston movably positioned within the air spring cylinder along a longitudinal axis of the air spring cylinder and a driver blade fixedly attached to the piston. The power tool includes a lifter that is attached to the piston via an elastic member so as to extend side by side with the driver blade. The elastic member serves as a jam bumper that absorbs jam shock due to abnormal tool operation.