682results about "Dampers-spring combinations" patented technology

The invention relates to the technical field of damping and shock absorption, in particular to a damping-adjustable composite shock absorption system for textile printing and dyeing equipment, which comprises a bottom plate and a top plate, a first shock absorption unit and a movable plate are mounted between the bottom plate and the top plate, and a first buffer spring is fixedly connected between the top plate and the movable plate; a second damping unit is installed between the movable plate and the bottom plate. During damping, vibration is buffered through telescopic deformation of a first buffer spring and a second buffer spring, oil liquid is pushed to flow in backflow oil pipes through vertical movement of a first piston rod, vibration energy is consumed through friction force between the oil liquid and the backflow oil pipes, and vibration of a machine body is restrained; the different backflow oil pipes are switched to be communicated with the oil storage cavity through the switching mechanism, the longer the backflow oil pipes are, the larger the on-way resistance when oil passes through the backflow oil pipes is, the higher the damping force is, and the damping device can be conveniently installed on textile printing and dyeing equipment with different vibration intensities for damping.

A hydraulic mount capable of damping both an up-down vibration and a front-rear vibration of a motor module includes an internal pipe; a main rubber formed on an external circumferential surface of the internal pipe, and provided with a plurality of liquid chambers in which fluid is sealed; an orifice unit mounted to an external circumferential surface of the main rubber to cover the plurality of liquid chambers; and an external pipe surrounding and mounted on the orifice unit, and the orifice unit includes a first flow path connecting an upper liquid chamber and a lower liquid chamber among the plurality of liquid chambers provided in the main rubber in a fluidable manner; and a second flow path connecting a front liquid chamber and a rear liquid chamber among the plurality of liquid chambers provided in the main rubber in a fluidable manner.

A hydro engine mount for a vehicle may include a locking body including a plurality of locking portions; a body plate including a plurality of fastening grooves configured to be fastened to the plurality of locking portions, wherein a main rubber is mounted in the body plate; and a diaphragm stacked between the main rubber and the locking body.

The multi-directional controllable suspension system comprises a linear electromagnetic vibration reduction assembly and an arc-surface electromagnetic vibration reduction assembly, when the multi-directional controllable suspension system is used, when a vehicle frame at the lower end vibrates vertically, a first guide rod moves in the axial direction of an outer cylinder, and a cylindrical electromagnetic coupling unit fixed to the first guide rod moves between an outer permanent magnet array and an inner permanent magnet array; when the vehicle body inclines laterally or twists, the outer cylinder rotates around the hinged point of the outer cylinder and the lower end vehicle frame, the cambered surface electromagnetic coupling unit is driven to deflect between the upper permanent magnet array and the lower permanent magnet array, the gradient magnetic field is cut to generate resistance moment, and vibration is reduced. The first elastic piece and the second elastic piece provide elastic restoring force for the upper permanent magnet array and the lower permanent magnet array correspondingly to cooperatively inhibit side inclination and torsion, so that multi-dimensional vibration reduction in the horizontal direction is achieved, and the dynamic stability of the vehicle is improved.

The utility model relates to the technical field of buffering protection, and discloses a spring hydraulic buffering protection device which comprises a damping piston cylinder and a piston rod, the damping piston cylinder is matched with the piston rod, a collided head is installed at the top of the piston rod, an elastic buffering cap is installed at the top of the collided head, a thrust spring is sleeved outside the piston rod, and the elastic buffering cap is sleeved outside the piston rod. The two ends of the thrust spring are fixed to the top of the damping piston barrel and the bottom of the elastic buffer cap respectively, the elastic buffer cap is made of high-elasticity materials and can effectively absorb impact force, and the bottom of the piston rod penetrates into the damping piston barrel in a sealed mode. By utilizing the damping characteristic of liquid flow and the elastic deformation of the spring, double buffering on impact force is realized, the stability and durability of the device are obviously improved, the vibration frequency of equipment in high-speed operation is effectively reduced, and the service life of the equipment is prolonged.

The application discloses a damping-adjustable hydraulic bushing and a control method thereof. The damping-adjustable hydraulic bushing is composed of a hydraulic bushing body and a solenoid valve. The hydraulic bushing body comprises a bushing support, a main spring rubber, a cast aluminum inner tube, an aluminum outer tube and a cage-shaped framework. The cast aluminum inner tube, the main spring rubber and the aluminum outer tube are coaxially arranged from inside to outside. The cage-shaped framework is arranged in the main spring rubber and used for supporting the main spring rubber. Two flow channel plates are assembled between the aluminum outer tube and the main spring rubber, so that a brake liquid chamber and an acceleration liquid chamber are formed between the main spring rubber and the flow channel plates respectively. A brake flow channel on the brake side flow channel plate cooperates with an acceleration flow channel on the acceleration side flow channel plate to form a passage. A connecting bridge is arranged on the cage-shaped framework. The solenoid valve is connected to the connecting bridge through bolts. An axial actuating hole is arranged on the cage-shaped framework. An actuating rod is arranged in the axial actuating hole and controlled by the solenoid valve.

The invention discloses a bridge electromagnetic inertial mass hybrid control damping system and an overall hybrid control method. The damping system comprises an inertial mass assembly, an electromagnetic assembly, a rigidity assembly and a corresponding parameter adjusting circuit. Wherein the ball screw system is used for converting linear translation into rotation, the inertial mass assembly is used for providing acceleration type inertial mass damping, the electromagnetic assembly is used for providing speed type electromagnetic damping, and the rigidity assembly is used for providing rigidity. In a normal operation stage, a parameter adjusting circuit is utilized, and the purpose of adjusting electromagnetic damping and rigidity values is achieved by changing circuit input, so that semi-active tuning is realized; under the action of an earthquake, circuit input is fixed, so that parameters of the damper are constant, and the anti-seismic robustness of the damper can be improved.

A shock absorber includes a cylinder, a sleeve provided so as to surround the outer circumferential surface of the cylinder, the cylinder formed of a different material from a material for the cylinder, first and second springs provided along the outer circumferential surface of the sleeve, and a slider provided between the first spring and the second spring, and capable of being displaced in an axal direction. The materials for the cylinder and the sleeve are a combination of materials that causes corrosion due to a contact of either one of those with the other one of those. A corrosion inhibitor is provided which suppresses an occurrence of corrosion on the cylinder or on the sleeve. In one embodiment, the materials are metals.

The invention provides a fan tuned mass inerter damper structure and a parameter design method, and belongs to the field of ocean engineering vibration reduction. The structure comprises an engineering structure, an outer sleeve, a roller, an inner sleeve, an additional mass block, four damper spring units and four inerter system units. The engineering structure is fixed with the external sleeve, and a guide rail is formed between the engineering structure and the external sleeve; the additional mass block is arranged in the center of the inner sleeve, the four inerter system units are connected with the damper spring unit and located on the same plane, the other ends of the four inerter system units are connected with the inner wall of the inner sleeve, and each inerter system unit comprises an inerter system spring, a damping unit, a first inerter unit and a second inerter unit. According to the structure, translation-rotation conversion is achieved through the inerter unit, efficient inertia synergy is achieved with small physical mass, and the load of a draught fan is relieved; the four units are symmetrically arranged to ensure omnidirectional vibration suppression; the roller guide rail reduces friction and improves response sensitivity and energy consumption efficiency; according to the parameter design method, parameters are accurately optimized, and broadband vibration reduction performance and engineering reliability are guaranteed.

Disclosed are a bushing mount and a manufacturing method thereof that may relieve residual stress of a rubber bushing molded on a middle pipe and increase durability. The manufacturing method of the bushing mount includes disposing the middle pipe coaxially with an expansion pipe, molding the rubber bushing on the middle pipe to be joined to an outer circumferential surface of the expansion pipe and surround the middle pipe, press-fitting the rubber bushing into an outer pipe, and press-fitting an inner pipe having a radius greater than a radius of the expansion pipe into the expansion pipe to expand the expansion pipe.

The invention discloses a built-in electromagnetic valve type semi-active shock absorber and a working method, the built-in electromagnetic valve type semi-active shock absorber comprises a working cylinder, a floating piston is arranged in the working cylinder, and an inner cavity of the working cylinder is divided into an air cavity and an oil cavity by the floating piston; the damping adjusting valve is slidably arranged in the oil cavity and divides the oil cavity into a compression cavity and a recovery cavity, and the upper end of the damping adjusting valve is connected with the piston rod; the damping adjusting valve comprises a valve body, a containing cavity is formed in the valve body, and a main valve seat hole is formed in the lower end face of the valve body. The main valve seat hole is communicated with the accommodating cavity in the valve body and the compression cavity; the valve core comprises a main valve core, a main valve spring and a main valve spring seat; the main valve spring seat is fixed in a containing cavity of the valve body assembly, and a pilot cavity is formed by the main valve spring seat and the electromagnetic valve assembly; the main valve spring is arranged between the main valve spring seat and the main valve element in a sleeved mode and abuts against the main valve element on the end face of the main valve seat hole. And the main valve core and the main valve seat hole form a main valve port. According to the built-in electromagnetic valve type semi-active shock absorber and the working method, machining is easy, and meanwhile the quick response capacity is achieved.

The utility model belongs to the technical field of dampers, and particularly relates to a magnetorheological damper which comprises an outer cylinder, an inner cylinder is coaxially arranged in the outer cylinder, and a circulation channel is reserved between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder. The circulating holes are formed in the top and the bottom of the side wall of the inner cylinder, and the circulating channel communicates with the interior of the inner cylinder through the circulating holes, so that the magnetorheological fluid circularly flows between the circulating channel and the interior of the inner cylinder; and the side wall of the inner cylinder is filled with the anti-freezing cooling liquid, and the anti-freezing cooling liquid is used for heat exchange with the magnetorheological fluid. According to the utility model, the problems of magnetorheological fluid sedimentation and temperature rise can be solved.

The application provides an electromagnetic inertial actuator, permanent magnets, inner yoke iron and outer yoke iron are fixedly connected by using non-magnetic retainer, so that only ampere force exists in the magnetic circuit system, and good output linearity of the actuator is ensured. On this basis, disc-shaped spring plates with quasi-zero stiffness characteristics are arranged, the inherent frequency of the system is reduced, and low-frequency output performance is ensured. The permanent magnets, the inner yoke iron, the outer yoke iron, the end cover and the heat dissipation device are integrally designed, a large inertial actuator mover mass is formed, the effective mass of the actuator, i.e. the ratio of the mass of the movable part to the total mass, is maximized. In this way, the low-frequency output and the output value per unit mass can be improved, the total volume and mass of the inertial actuator are effectively reduced, and the installation space is saved. Meanwhile, increasing the mass of the mover can effectively reduce the low-frequency vibration displacement of the inertial actuator, and the quasi-zero stiffness characteristics can be further ensured to be realized and stable.

The invention relates to an electromagnetic hydraulic mount, a control method thereof and a vehicle, and belongs to the technical field of vibration isolation devices. The electromagnetic hydraulic suspension comprises a containing structure, a coil assembly, a main spring and an auxiliary spring. The coil assembly is arranged in the containing structure. The main spring is connected with the containing structure, and a first liquid cavity is formed between the main spring and the containing structure. The auxiliary spring is connected with the containing structure, and a second liquid cavity is formed between the auxiliary spring and the containing structure. Two first damping channels and a second damping channel are arranged in the containing structure, the two first damping channels communicate with the second damping channel, and the two first damping channels communicate with the first liquid cavity and the second liquid cavity correspondingly. The two first damping channels are located at the two opposite ends of the coil assembly respectively, and liquid flowing through the first damping channels cuts magnetic induction lines at the corresponding ends of the coil assembly. According to the electromagnetic hydraulic mount, the control method thereof and the vehicle, the vibration excitation attenuation effect can be improved.

The utility model discloses a durable shock absorber with a good shock absorption effect, which comprises a protection component, a shock absorption component and a shock absorption component, and is characterized in that the protection component comprises a lower protection plate mounted at the bottom or below equipment, and a part of the weight of the equipment is supported on the shock absorber through adjustment of a screw rod; and the damping assembly is mounted between the protective lower plate and the protective shell in the protective assembly and is used for reducing or eliminating the vibration of the equipment through a damper. The reset spring connected to the outer side of the positioning seat in a sleeving mode and the positioning sleeve at the upper end jointly act to form a damping system in the horizontal direction, front-back vibration of equipment can be effectively absorbed and relieved, vertical vibration of the equipment can be effectively relieved through composite damping in the vertical direction and the horizontal direction, and the service life of the equipment is prolonged. And the front-back vibration of equipment can be effectively reduced, so that the technical problem that an existing spring shock absorber can only reduce the up-down vibration but cannot reduce the front-back vibration is effectively solved, meanwhile, the defect that an air bag shock absorber is high in manufacturing cost is overcome, and the input cost of a user is reduced.

The invention discloses a hydraulic bushing with excellent torsion performance. The hydraulic bushing comprises an outer pipe, and a hydraulic main spring assembly used for second-stage vibration reduction and a solid bushing assembly used for first-stage vibration reduction are sequentially and concentrically arranged in the outer pipe from outside to inside; the hydraulic main spring assembly comprises a first middle pipe, and the outer side wall of the first middle pipe is connected with the inner side wall of the outer pipe through a first rubber body. The solid bushing assembly comprises a second middle pipe and an inner pipe, and the outer side wall of the second middle pipe is connected with the inner side wall of the first middle pipe; the inner pipe is arranged in the second middle pipe, and the outer side wall of the inner pipe is connected with the inner side wall of the second middle pipe through a second rubber body. The damping device is provided with the first-stage damping solid bushing assembly and the second-stage damping hydraulic main spring assembly, and the hydraulic main spring assembly on the outer side provides a hydraulic characteristic and meanwhile provides a part of rigidity characteristic. When the hydraulic main spring assembly on the outer side is twisted and the torsion reaches a certain degree, the solid lining assembly on the inner side not only provides axial and radial rigidity, but also starts to provide the torsional rigidity characteristic.

The liquid elastic vibration isolator integrally comprises a liquid cavity surrounded by a vulcanized body, the upper portion of the liquid cavity is sealed by an upper cover plate, the interior of the liquid cavity is divided into an upper liquid cavity body and a lower liquid cavity body through a flow channel body, the flow channel body is provided with a liquid channel for communicating the upper liquid cavity body with the lower liquid cavity body, and a lower cover plate is assembled below the vulcanized body. A rubber elastic piece is arranged between the runner body and the lower cover plate, a lower liquid cavity is defined by the rubber elastic piece and the vulcanized body, and an air cavity is defined by the rubber elastic piece and the lower cover plate. In the initial state, the rubber elastic piece is in a bowl shape with the center protruding upwards, an upper protruding arc is formed at the center protruding position, the outer periphery of the upper protruding arc is concaved downwards to form a lower concave ring, the outer periphery of the lower concave ring protrudes upwards to form an upper protruding ring, the outer periphery of the upper protruding ring is a horizontal annular straight edge, and any adjacent shapes are in smooth transition connection. The size of the liquid cavity and the size of the air cavity are changed by changing the shape of the rubber elastic piece, and then the load transmitted to the machine body is reduced.

A force damper arranged to progressively arrest a first force imparted by an object moving in a first direction is disclosed. The force damper includes a housing enclosure having a first housing end and a second housing end. The first housing end includes a first connection point, and the second housing end includes an opening. A driving member is disposed within the housing enclosure and includes a first shaft end, a second shaft end, and a shaft therebetween. The first shaft end includes a stop and the second shaft end includes a second connection point. A compressible member is disposed within the housing enclosure between the stop and the opening. The compressible member is formed from a material that at least partially undergoes plastic deformation when the first force is arrested and imparts a second force on the stop toward first housing end.

The invention discloses an active vibration reduction damper for oil field drilling, and belongs to the technical field of oil field drilling equipment, the active vibration reduction damper comprises an upper damping shell and a lower damping shell, the upper damping shell and the lower damping shell are mutually sleeved, and a grouting conveying pipe is arranged in the upper damping shell and the lower damping shell; a driving rod frame is installed on the grouting conveying pipe, a primary vibration reduction assembly and a multi-stage vibration reduction assembly are arranged in the lower damping shock absorption shell, a fixing disc is arranged above the primary vibration reduction assembly and the multi-stage vibration reduction assembly, and the fixing disc is fixedly connected into the upper damping shock absorption shell. By means of the primary vibration reduction assembly, the vibration reduction requirement can be met when the vibration amplitude is small, when the vibration amplitude exceeds a preset threshold value, the multi-stage vibration reduction assembly is started to achieve stepped step-by-step vibration reduction, the overall vibration reduction capacity is improved, the problem of vibration reduction failure caused by dynamic changes of the vibration amplitude in the well drilling process is effectively solved, and stable operation of well drilling equipment is guaranteed.

The utility model discloses a shockproof damping device for a bridge, and relates to the technical field of bridge damping. The damping device comprises two mounting plates, a mounting seat is fixedly connected between the two mounting plates, a viscous damper is movably connected to the inner side of the mounting seat through a rotating shaft, and a damping support is fixedly connected to one side of each mounting plate; a main buffering assembly is arranged on one side of the mounting plate and comprises a supporting ring fixedly connected to one side of the damping support. Through the coupling effect of the friction dampers of the main buffering assembly and the first springs, dual energy consumption of coulomb friction and elastic deformation is generated in the initial vibration stage, the peak acceleration is effectively reduced, the eight friction dampers distributed at equal angles form an annular buffering array, omni-directional dissipation of horizontal vibration in any direction is achieved, and the vibration damping effect is improved. The three-dimensional supporting structure of the damping support is matched, and the stress concentration phenomenon of a traditional one-way damper is eliminated.

The utility model relates to the technical field of automobile accessories, and discloses a bionic multi-cavity structure automobile shock absorber which comprises a main shock absorption mechanism, an auxiliary shock absorption mechanism is arranged at the bottom end of the main shock absorption mechanism, the main shock absorption mechanism comprises a first damping telescopic rod, and the upper fixed end and the lower movable end of the first damping telescopic rod are each fixedly connected with a cover plate. A first damping spring is fixedly connected between the side walls of the opposite sides of the two cover plates. By the adoption of the structural design which is simplified and beneficial to maintenance, the shock absorber comprises a main shock absorber structure, a sliding sleeve structure is arranged on the outer side of the middle of the movable end of the main shock absorber structure in a sliding mode, and four auxiliary shock absorber structures are fixedly installed between the sliding sleeve structure and a bottom cover plate of the main shock absorber structure at equal angles. Damping structures of the main shock absorber structure and the auxiliary shock absorber structure are damping telescopic rods, cavities are formed in the damping telescopic rods, the whole automobile shock absorber is provided with a plurality of cavity structures which are mutually independent, the structure is simple, and production, manufacturing and maintenance are facilitated.

The invention discloses a liquid damping shock absorber which comprises an outer shell (6) and a middle shaft (2) and is characterized in that the outer shell (6) is in a barrel shape, the middle shaft (2) is installed at the bottom of the barrel through an axial supporting mechanism (14), a damping barrel is arranged in the outer shell (6) and installed on the middle shaft (2), and the damping barrel is of a cavity structure with an elastic gap in the lower bottom face. The upper end of the middle shaft (2) penetrates out of the center of an upper end cover (3) of the outer shell (6), damping liquid is contained in the outer shell (6), and the liquid level of the damping liquid is higher than the lower bottom face of the damping cylinder. According to the shock absorber, the damping liquid and the damping cylinder are organically combined, the damping cylinder extrudes the damping liquid when the shock absorber is subjected to an external load, vibration energy is counteracted through viscous dissipation and dynamic pressure generated by liquid shaking, gaps can be changed when pressure is received by the porous structure characteristics of the bottom of the damping cylinder, and the flow of the damping liquid penetrating through the gaps is influenced; therefore, the damping of the shock absorber is variable.

The utility model discloses a sliding type damping box, including upper connecting plate and the box of being located below upper connecting plate, the lower part fixedly connected with plunger of upper connecting plate, the right baffle and left baffle of opposite setting are equipped with in box inner chamber seal, the cavity formed by right baffle, left baffle and box is equipped with damping liquid, the lower part of plunger is inserted into damping liquid, the lower part both sides of upper connecting plate are fixedly connected with the right support plate and left support plate of inserting into the inner chamber of box, and the lower end of right support plate and left support plate respectively abuts with the sliding body of a plurality of located at the bottom of box. The utility model discloses the lower end of right support plate and left support plate abuts with a plurality of sliding bodies, can be used to bear the weight load of equipment, realizes the horizontal free sliding under heavy load working condition, can improve the friction damping effect of right support plate and left support plate through rubber pad, improves the damping effect of damper, makes up the problem that damper damping force is not enough in high temperature environment, guarantees the damping effect of damper.

The application relates to the technical field of vehicle parts, and provides a hydraulic suspension and a vehicle provided with the same. The hydraulic suspension provided by the application comprises a suspension main body with a first liquid chamber and a second liquid chamber, a flow channel assembly and a volume compensation part arranged in the suspension main body; the first liquid chamber and the second liquid chamber are communicated through the flow channel assembly; wherein the volume of the first liquid chamber can change along with the change of a rubber main spring in the suspension main body, and the volume compensation part is arranged in the second liquid chamber; when the fluid in the second liquid chamber flows into the first liquid chamber, the volume of the volume compensation part increases along with the decrease of the pressure in the second liquid chamber, and when the fluid in the first liquid chamber flows into the second liquid chamber, the volume of the volume compensation part decreases along with the increase of the pressure in the second liquid chamber. The hydraulic suspension provided by the application improves the sealing effect of the hydraulic suspension, and is beneficial to making the hydraulic suspension have good use effect.

A high damped elastomer high energy rope mount isolator is described. Two mounting bars are strategically positioned to interconnect the turns of a single-strand or multi-strand cable in two diametrically opposite zones. The mounting bars may include mounting holes to fasten the isolator to a load and / or a floor. The mounting bars may further have mounting holes for screws to fasten the cable in place. The cable and the mounting bars are encapsulated by a high damped elastomer compound providing an isolator with significantly higher damping characteristics than traditional rope mount isolators, while limiting negative performance effects due to temperature, flammability, and toxicity.

This invention provides a novel fluid-sealed vibration damping device that can suppress the influence of hydraulic pressure absorption on a rubber elastic plate and tune the switching characteristics of the opening and closing of the communication port. In this fluid-sealed vibration damping device, the communication port connecting the pressure chamber and the balance chamber is covered by a rubber elastic plate, and the device absorbs minor pressure fluctuations based on the elastic deformation of the rubber elastic plate. A peripheral abutment holding portion, which overlaps with a partition member, is partially provided circumferentially on the rubber elastic plate. An elastic deformation region is provided circumferentially between the peripheral abutment holding portions in the rubber elastic plate. This elastic deformation region separates from the partition member, thereby allowing fluid flow from the balance chamber to the pressure chamber through the communication port. Radial reinforcing ribs are formed protruding from the rubber elastic plate, extending outwards from the inner peripheral abutment holding portion, which overlaps with the partition member, toward the elastic deformation region.

A hydraulic mount for a vehicle configured to control and dampen behavior of a motor mounted on a vehicle body. The hydraulic mount includes an inner tube, a main rubber body molded on an outer circumferential surface of the inner tube having an upper front liquid chamber and an upper rear liquid chamber and a lower front liquid chamber and a lower rear liquid chamber, and an outer tube fitted to an outer circumferential surface of the main rubber body to seal each liquid chamber, wherein the main rubber body includes a first flow path connecting the upper front liquid chamber and the lower rear liquid chamber filled with a fluid such that the fluid is movable therebetween, and a second flow path connecting the upper rear liquid chamber and the lower front liquid chamber filled with the fluid such that the fluid is movable therebetween.

A liquid-sealed mount (10) includes a body (12) having one end closed by a body rubber (14) and the other end closed by a diaphragm (16), a membrane (34) which partitions an inside of the body (12) into a first liquid chamber (22f) and a second liquid chamber (22s), a plurality of crosspieces (44) placed on both sides in an axial direction of the membrane (34) with the membrane (34) therebetween, and extending radially with a predetermined point as a center, and a passage (33) which communicates the first liquid chamber (22f) and the second liquid chamber (22s). The membrane (34) has at least one protrusion group (52) formed from a plurality of protrusions placed on a circle which is approximately concentric with the predetermined point, and the at least one protrusion group (52) satisfies the condition y > 2x + 2a when an average value of spacing between protrusions (50) adjacent in a circumferential direction is x, a diameter of the protrusion (50) is a, and a width of the crosspiece (44) is y.

The application discloses a kind of with multi-channel nitrogen filling's automobile suspension magnetorheological shock absorber, including shell assembly, piston rod, double buckling sealing type locking assembly, nitrogen chamber and multi-channel nitrogen filling assembly.The gas connector of the present application is designed with multiple specifications of different diameter through holes, which can be flexibly selected according to different use requirements such as nitrogen filling, pressure detection and micro pressure regulation, and completely solves the problem of single channel of existing devices;The multi-channel design greatly improves the nitrogen filling accuracy of the nitrogen chamber, and makes the pressure detection and pressure regulation operation more convenient, effectively ensures the elastic buffering performance of the nitrogen chamber, lays the foundation for the overall damping effect of the shock absorber, solves the problems of poor sealing protection of existing piston rod locking structure, easy to enter impurities and inconvenient assembly and disassembly, enhances the sealing protection effect of the locking structure, prolongs the service life of the component, and at the same time simplifies the locking operation process, improves the convenience of automobile suspension maintenance.