Three-cylinder shock absorber structure

Abstract

The utility model discloses a three-cylinder shock absorber structure, which belongs to the technical field of shock absorbers and comprises an oil storage cylinder, and a machine core component for buffering is mounted at the upper end of the oil storage cylinder. The machine core assembly comprises a connecting device, a sealing device and a movable cylinder device, the oil storage cylinder is connected with the connecting device, the sealing device and the movable cylinder device, and the connecting device is connected with the sealing device, the movable cylinder device and the supporting and buffering assembly. The oil storage cylinder is provided with an outer cylinder assembly for further protection; a supporting and buffering assembly used for buffering is installed on the connecting device and connected with the outer cylinder assembly. By means of the mode, the outer cylinder structure is additionally arranged on the outer side of the working cylinder of the three-cylinder shock absorber structure, the capacity of bearing lateral force or bending moment is greatly enhanced, rotation pairs are changed to the upper side and the lower side of the spiral spring, the resistance moment during steering is reduced, the service life of the shock absorber is prolonged, and the three-cylinder shock absorber structure is suitable for a heavy-load vehicle type suspension.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a three-cylinder shock absorber structure. Background Art

[0002] Shock absorbers are an indispensable and important component in automobile production. When a car is driving on uneven ground, in order to reduce the vibration of the car body during driving and thus improve the comfort of the car during driving, the vibration of the car is absorbed by installing shock absorbers.

[0003] For example, Chinese utility model patent CN212455313U discloses a working cylinder necking shock absorber, in which the working cylinder and the guide bear lateral force and are steered by a flat steering bearing at a support assembly at the top of the shock absorber.

[0004] However, it still has the following disadvantages: the working cylinder and the guide are weak in their ability to withstand lateral forces and cannot be applied to heavy-loaded vehicles; the steering resistance borne by the flat steering bearing at the top support assembly is large and easy to be damaged.

[0005] Based on this, the utility model designs a three-cylinder shock absorber structure to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a three-cylinder shock absorber structure.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A three-cylinder shock absorber structure comprises an oil storage cylinder, and a core assembly for buffering is installed on the upper end of the oil storage cylinder;

[0009] The movement assembly comprises a connecting device, a sealing device and a movable cylinder device, the oil storage cylinder is connected with the connecting device, the sealing device and the movable cylinder device, and the connecting device is connected with the sealing device, the movable cylinder device and the supporting buffer assembly;

[0010] The oil storage cylinder is connected with an outer cylinder assembly for further protection;

[0011] A support buffer assembly for buffering is installed on the connecting device, and the support buffer assembly is connected to the outer cylinder assembly.

[0012] Furthermore, the connecting device includes a bushing, an upper connecting block, a working cylinder one and a working cylinder two. The inner wall of the left end of the oil storage cylinder is fitted and connected to the working cylinder two, the inner wall of the right end of the oil storage cylinder is fitted and connected to the working cylinder one, the left end of the oil storage cylinder is threadedly connected to the upper connecting block, the left end of the upper connecting block is fixedly connected to the bushing, the upper connecting block is connected to the sealing device and the supporting buffer assembly, the right end of the upper connecting block is fixedly connected to the working cylinder two, the working cylinder two is connected to the sealing device, the sealing device is connected to the working cylinder one, and the working cylinder one is connected to the movable cylinder device.

[0013] Furthermore, the sealing device includes O-ring 1, a cylindrical compression spring, a floating piston, O-ring 3, a support seat, a compression valve assembly and O-ring 2, the outer wall of the upper connecting block is fixedly connected with O-ring 1, O-ring 1 is fitted and contacted with the inner wall of the oil storage cylinder, the right end of the upper connecting block is fixedly connected with one end of the cylindrical compression spring, the other end of the cylindrical compression spring is fixedly connected with the floating piston, the right end outer wall of O-ring 1 is fixedly connected with O-ring 2, O-ring 2 is fitted and connected with the inner wall of working cylinder 2, the outer wall of the left end of the floating piston is fixedly connected with the floating piston, the floating piston is fitted and contacted with the inner wall of working cylinder 2, the right end of working cylinder 2 is contacted and connected with the support seat, the right end of the support seat is fixedly connected with the compression valve assembly, and the right end of the compression valve assembly is contacted and connected with working cylinder 1.

[0014] Furthermore, the movable cylinder device includes a restoring valve assembly, a restoring limit assembly, a guide assembly, a gasket, a nut body, a piston rod, a limit rubber block and a nut. The right end of the oil storage cylinder is fixedly connected to the nut body, the inner wall of the working cylinder is slidably connected to the restoring valve assembly, the right end of the restoring valve assembly is fixedly connected to the piston rod, the left end of the piston rod is fixedly connected to the gasket, the right end of the nut body is fixedly connected to the guide assembly, the right end of the guide assembly is in contact with the working cylinder, the right end of the piston rod is fixedly connected to the restoring limit assembly, the piston rod is fitted and slidably connected to the nut body and the guide assembly, and the right end of the piston rod is fixedly connected to the limit rubber block through a nut.

[0015] Furthermore, the outer cylinder assembly includes a movable device and a supporting device, the oil storage cylinder is connected to the movable device, the movable device is connected to the supporting device, and the supporting device is connected to the supporting buffer assembly.

[0016] Furthermore, the movable device includes a dustproof oil seal, a nut body, a skeleton oil seal 1, a self-lubricating copper sleeve 1, a support tube, a self-lubricating copper sleeve 2 and a skeleton oil seal 2. The outer wall of the oil storage cylinder is slidably connected with the support tube, the support tube is connected to the support device, the left and right ends of the support tube are respectively fixedly connected with the self-lubricating copper sleeve 1 and the self-lubricating copper sleeve 2, the left end outer wall of the self-lubricating copper sleeve 1 is fixedly connected with the skeleton oil seal 1, the right end outer wall of the self-lubricating copper sleeve 2 is fixedly connected with the skeleton oil seal 2, the left end of the self-lubricating copper sleeve 1 is fixedly connected with the nut body, the left end of the nut body is fixedly connected with the dustproof oil seal, the dustproof oil seal, skeleton oil seal 1 and skeleton oil seal 2 are connected to the supporting device.

[0017] Furthermore, the supporting device includes a base, an outer tube, a suspension mounting seat and a lower bearing support seat. The outer wall of the supporting tube is slidably connected to the outer tube, the inner wall of the right end of the outer tube is fixedly connected to the base, the outer wall of the outer tube is fixedly connected to the suspension mounting seat and the lower bearing support seat, the lower bearing support seat is located at the left end of the suspension mounting seat, the lower bearing support seat is connected to the supporting buffer assembly, and the dustproof oil seal, skeleton oil seal one and skeleton oil seal two are in contact with the outer tube.

[0018] Furthermore, the support and buffer assembly includes an upper dust cover, an upper plane thrust bearing, an upper spring support, a coil spring, a coil spring lower support, a lower plane thrust bearing, and a lower dust cover, the upper connecting block outer wall is fixedly connected with the upper dust cover, the right end of the upper connecting block is fixedly connected with the upper plane thrust bearing, the right end of the upper plane thrust bearing is fixedly connected with the upper spring support, the right end of the upper spring support is fixedly connected to one end of the coil spring, the right end of the coil spring is fixedly connected to the coil spring lower support, the right end of the coil spring lower support is fixedly connected to the lower plane thrust bearing, the right end of the lower plane thrust bearing is fixedly connected to the lower bearing support seat, and the lower dust cover is fixedly connected to the outer wall of the lower bearing support seat.

[0019] The utility model has the following technical effects:

[0020] In the embodiment of the utility model, when the device starts to absorb shock, the limiting rubber block fixed by the nut of the movable cylinder device of the compression sealing device moves to the left, and the limiting rubber block moving to the left drives the piston rod to move to the left, and the piston rod drives the restoration valve combination and the restoration limiting combination to move to the left in the working cylinder 1 of the connecting device, and the support seat and the compression valve combination of the sealing device are compressed to move to the left by the left-moving restoration valve combination, and the cylindrical compression spring is compressed by the support seat to shrink in the working cylinder 2, and the impact force is relieved by the contraction of the oil and the cylindrical compression spring, and the left end of the device is sealed by the bushing and O-ring 1 and the gap is sealed by the O-ring 1, and the left end of the working cylinder 2 is sealed by the O-ring 2, and the oil at both ends is prevented from being connected by the sealing of the floating piston and the O-ring 3, and the guide assembly is fixed in the device by the gasket and the nut body 1, and the double buffering of the hydraulic oil and the cylindrical compression spring can better absorb the energy of the impact, and the limiting and buffering of the device can prevent the position deviation when the device is reset or the impact force is too large to cause damage to the device.

[0021] In the embodiment of the utility model, when the device starts to run, the outer cylinder of the supporting device of the outer cylinder assembly moves to the left, driving the self-lubricating copper sleeve 1, the supporting tube and the self-lubricating copper sleeve 2 of the movable device to move to the left, and the nut body is driven to move to the left by the self-lubricating copper sleeve 1, and the device is sealed by the dustproof oil seal, the nut body and the skeleton oil seal 2. Various components are installed through the base, and the suspension mounting seat and the lower bearing support seat are used to fix the support buffer assembly. The three-cylinder shock absorber structure adds an outer cylinder structure on the outside of the working cylinder, which greatly enhances the ability to withstand lateral force or bending moment. This structure changes the rotating pair to the upper and lower sides of the coil spring, reduces the resistance torque during steering, and increases the service life of the shock absorber. It is suitable for the suspension of heavy-duty vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A front view of a three-cylinder shock absorber structure of the utility model Figure 1 ;

[0024] Figure 2 A front view of a three-cylinder shock absorber structure of the utility model Figure 2 ;

[0025] Figure 3 A front view of a three-cylinder shock absorber structure of the utility model Figure 3 ;

[0026] Figure 4 This is a partial enlargement of a three-cylinder shock absorber structure of the utility model. Figure 1 ;

[0027] Figure 5 This is a partial enlargement of a three-cylinder shock absorber structure of the utility model. Figure 2 .

[0028] The numbers in the figure represent:

[0029] 1. Oil storage cylinder 2. Movement assembly 21. Connecting device 22. Sealing device 23. Movable cylinder device 211. Bushing 212. Upper connecting block 213. Working cylinder 1 214. Working cylinder 2 221. O-ring 1 222. Cylindrical compression spring 223. Floating piston 224. O-ring 3 225. Support seat 226. Compression valve assembly 227. O-ring 2 231. Restoration valve assembly 232. Restoration limit assembly 233. Guide assembly 234. Gasket 235. Nut body 1 236. Piston rod 237. Limit rubber block 23 8. Nut 3. Outer cylinder assembly 31. Movable device 32. Support device 311. Dustproof oil seal 312. Nut body 313. Skeleton oil seal 1 314. Self-lubricating copper sleeve 1 315. Support tube 316. Self-lubricating copper sleeve 2 317. Skeleton oil seal 2 321. Base 322. Outer cylinder 323. Suspension mounting seat 324. Lower bearing support seat 4. Support buffer assembly 41. Upper dust cover 42. Upper plane thrust bearing 43. Spring upper support 44. Coil spring 45. Coil spring lower support 46. Lower plane thrust bearing 47. Lower dust cover. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The utility model is further described below in conjunction with embodiments.

[0032] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0033] Example 1

[0034] Please refer to the instruction manual Figure 1-5 , a three-cylinder shock absorber structure, comprising an oil storage cylinder 1;

[0035] A core assembly 2 for buffering is installed at the upper end of the oil storage cylinder 1, and the core assembly 2 is connected to the supporting buffer assembly 4;

[0036] The movement assembly 2 includes a connecting device 21, a sealing device 22 and a movable cylinder device 23, the oil storage cylinder 1 is connected with the connecting device 21, the sealing device 22 and the movable cylinder device 23, and the connecting device 21 is connected with the sealing device 22, the movable cylinder device 23 and the supporting buffer assembly 4;

[0037] The connecting device 21 includes a bushing 211, an upper connecting block 212, a working cylinder 1 213 and a working cylinder 2 214. The inner wall of the left end of the oil storage cylinder 1 is fitted with the working cylinder 2 214, and the inner wall of the right end of the oil storage cylinder 1 is fitted with the working cylinder 1 213. The left end of the oil storage cylinder 1 is threadedly connected with the upper connecting block 212, and the left end of the upper connecting block 212 is fixedly connected with the bushing 211. The upper connecting block 212 is connected to the sealing device 22 and the support buffer assembly 4. The right end of the upper connecting block 212 is fixedly connected with the working cylinder 214. The working cylinder 214 is connected to the sealing device 22, and the sealing device 22 is connected to the working cylinder 1 213. The working cylinder 1 213 is connected to the movable cylinder device 23.

[0038] The sealing device 22 includes an O-ring 1 221, a cylindrical compression spring 222, a floating piston 223, an O-ring 3 224, a support seat 225, a compression valve assembly 226 and an O-ring 2 27. The outer wall of the upper connecting block 212 is fixedly connected with the O-ring 1 221, and the O-ring 1 221 is in contact with the inner wall of the oil storage cylinder 1. The right end of the upper connecting block 212 is fixedly connected to one end of the cylindrical compression spring 222, and the other end of the cylindrical compression spring 222 is fixedly connected to the floating piston 223. The outer wall of the right end of the O-ring 1 221 is fixedly connected with the O-ring 227, the O-ring 227 is fitted and connected with the inner wall of the working cylinder 2 214, the outer wall of the left end of the floating piston 223 is fixedly connected with the floating piston 223, the floating piston 223 is fitted and contacted with the inner wall of the working cylinder 2 214, the right end of the working cylinder 214 is in contact with the support seat 225, the right end of the support seat 225 is fixedly connected with the compression valve assembly 226, and the right end of the compression valve assembly 226 is in contact with the working cylinder 1 213;

[0039] The movable cylinder device 23 includes a restoring valve assembly 231, a restoring limit assembly 232, a guide assembly 233, a gasket 234, a nut body 235, a piston rod 236, a limit rubber block 237 and a nut 238. The right end of the oil storage cylinder 1 is fixedly connected with the nut body 235, the inner wall of the working cylinder 213 is slidably connected with the restoring valve assembly 231, the right end of the restoring valve assembly 231 is fixedly connected with the piston rod 236, the left end of the piston rod 236 is fixedly connected with the gasket 234, the right end of the nut body 235 is fixedly connected with the guide assembly 233, the right end of the guide assembly 233 is in contact with the working cylinder 213, the right end of the piston rod 236 is fixedly connected with the restoring limit assembly 232, the piston rod 236 is fitted and slidably connected with the nut body 235 and the guide assembly 233, and the right end of the piston rod 236 is fixedly connected with the limit rubber block 237 through the nut 238;

[0040] In the embodiment of the utility model, when the device starts to absorb shock, the limiting rubber block 237 fixed by the nut 238 of the movable cylinder device 23 of the sealing device 22 is pressed to move to the left, and the limiting rubber block 237 moving to the left drives the piston rod 236 to move to the left, and the piston rod 236 drives the restoration valve assembly 231 and the restoration limiting assembly 232 to move to the left in the working cylinder 1 213 of the connecting device 21, and the support seat 225 and the compression valve assembly 226 of the sealing device 22 are pressed to move to the left by the restoration valve assembly 231 moving to the left, and the cylindrical compression spring 222 is compressed in the working cylinder 2 214 by the support seat 225. The impact force is relieved by the contraction of the oil and the cylindrical compression spring 222, the left end of the device is sealed by the bushing 211 and the O-ring 1 221 and the gap is sealed by the O-ring 1 221, the left end of the working cylinder 2 214 is sealed by the O-ring 227, the oil communication at both ends is prevented by the sealing of the floating piston 223 and the O-ring 3 224, the guide assembly 233 is fixed in the device by the gasket 234 and the nut body 1 235, the double buffering of the hydraulic oil and the cylindrical compression spring 222 can better absorb the energy of the impact, and the device can be prevented from being damaged due to position deviation or excessive impact force when the device is reset by limiting and buffering the device.

[0041] In some embodiments, please refer to the attached instructions. Figure 4-5 , an outer cylinder assembly 3 for further protection is installed on the oil storage cylinder 1, and the outer cylinder assembly 3 is connected to the support buffer assembly 4;

[0042] The outer cylinder assembly 3 includes a movable device 31 and a supporting device 32, the oil storage cylinder 1 is connected to the movable device 31, the movable device 31 is connected to the supporting device 32, and the supporting device 32 is connected to the supporting buffer assembly 4;

[0043] The movable device 31 includes a dustproof oil seal 311, a nut body 312, a skeleton oil seal 1 313, a self-lubricating copper sleeve 1 314, a support tube 315, a self-lubricating copper sleeve 2 316 and a skeleton oil seal 2 317. The outer wall of the oil storage cylinder 1 is fitted and slidably connected with the support tube 315, and the support tube 315 is connected to the support device 32. The left and right ends of the support tube 315 are respectively fixedly connected with the self-lubricating copper sleeve 1 314 and the self-lubricating copper sleeve 2 316. The outer wall of the left end of the self-lubricating copper sleeve 1 314 is fixedly connected with the skeleton oil seal 1 313, and the outer wall of the right end of the self-lubricating copper sleeve 2 316 is fixedly connected with the skeleton oil seal 2 317. The left end of the self-lubricating copper sleeve 1 314 is fixedly connected with the nut body 312, and the left end of the nut body 312 is fixedly connected with the dustproof oil seal 311. The dustproof oil seal 311, the skeleton oil seal 1 313 and the skeleton oil seal 2 317 are connected to the support device 32.

[0044] The supporting device 32 includes a base 321, an outer cylinder 322, a suspension mounting seat 323 and a lower bearing support seat 324. The outer wall of the supporting tube 315 is fitted and slidably connected with the outer cylinder 322. The inner wall of the right end of the outer cylinder 322 is fixedly connected with the base 321. The outer wall of the outer cylinder 322 is fixedly connected with the suspension mounting seat 323 and the lower bearing support seat 324. The lower bearing support seat 324 is located at the left end of the suspension mounting seat 323. The lower bearing support seat 324 is connected to the supporting buffer assembly 4. The dustproof oil seal 311, the skeleton oil seal 1 313 and the skeleton oil seal 2 317 are fitted and contacted with the outer cylinder 322.

[0045] In the embodiment of the utility model, when the device starts to run, the outer cylinder 322 of the supporting device 32 of the outer cylinder assembly 3 moves to the left, driving the self-lubricating copper sleeve 1 314, the supporting tube 315 and the self-lubricating copper sleeve 2 316 of the movable device 31 to move to the left, and the nut body 312 is driven to move to the left by the self-lubricating copper sleeve 1 314, and the device is sealed by the dustproof oil seal 311, the nut body 312 and the skeleton oil seal 2 317, and various components are installed through the base 321. The suspension mounting seat 323 and the lower bearing support seat 324 are used to fix the support buffer assembly 4; the three-cylinder shock absorber structure adds an outer cylinder structure on the outside of the working cylinder, which greatly enhances the ability to withstand lateral force or bending moment. This structure changes the rotating pair to the upper and lower sides of the coil spring, reduces the resistance torque during steering, and increases the service life of the shock absorber, which is suitable for heavy-duty vehicle suspension.

[0046] In some embodiments, please refer to the attached instructions. Figure 1-2 A support buffer component 4 for buffering is installed on the movement component 2, and the support buffer component 4 is connected to the outer cylinder component 3;

[0047] The support buffer assembly 4 includes an upper dust cover 41, an upper plane thrust bearing 42, a spring upper support 43, a coil spring 44, a coil spring lower support 45, a lower plane thrust bearing 46, and a lower dust cover 47. The upper dust cover 41 is fixedly connected to the outer wall of the upper connecting block 212, the upper plane thrust bearing 42 is fixedly connected to the right end of the upper connecting block 212, the upper spring support 43 is fixedly connected to the right end of the upper plane thrust bearing 42, the right end of the upper spring support 43 is fixedly connected to one end of the coil spring 44, the right end of the coil spring 44 is fixedly connected to the coil spring lower support 45, the right end of the coil spring lower support 45 is fixedly connected to the lower plane thrust bearing 46, the right end of the lower plane thrust bearing 46 is fixedly connected to the lower bearing support seat 324, and the outer wall of the lower bearing support seat 324 is fixedly connected to the lower dust cover 47;

[0048] In the embodiment of the utility model, when the device needs to buffer and unload force, the lower plane thrust bearing 46 and the lower coil spring support 45 supporting the buffer assembly 4 are driven to move to the left through the lower bearing support seat 324, and the coil spring 44 is compressed by the lower coil spring support 45 moving to the left to contract, and the contracted coil spring 44 is supported by the upper plane thrust bearing 42 and the spring upper support 43. The function of the upper dust cover 41 and the lower dust cover 47 is to prevent dust from entering the device and affecting the operation of the device, and to avoid damage to the device caused by excessive impact force by buffering the device. At the same time, the device can be pushed to automatically reset to avoid deviation of the device.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-cylinder shock absorber structure, comprising an oil storage cylinder (1), characterized in that: A movement assembly (2) for buffering is installed at the upper end of the oil storage cylinder (1); The movement assembly (2) comprises a connecting device (21), a sealing device (22) and a movable cylinder device (23); the oil storage cylinder (1) is connected to the connecting device (21), the sealing device (22) and the movable cylinder device (23); the connecting device (21) is connected to the sealing device (22), the movable cylinder device (23) and the supporting buffer assembly (4); The oil storage cylinder (1) is connected to an outer cylinder assembly (3) for further protection; A support buffer component (4) for buffering is installed on the connecting device (21), and the support buffer component (4) is connected to the outer cylinder component (3).

2. The three-cylinder shock absorber structure according to claim 1, characterized in that: The connecting device (21) comprises a bushing (211), an upper connecting block (212), a working cylinder 1 (213) and a working cylinder 2 (214); the inner wall of the left end of the oil storage cylinder (1) is fitted and connected to the working cylinder 2 (214); the inner wall of the right end of the oil storage cylinder (1) is fitted and connected to the working cylinder 1 (213); the left end of the oil storage cylinder (1) is threadedly connected to the upper connecting block (212); the left end of the upper connecting block (212) is fixedly connected to the bushing (211); the upper connecting block (212) is connected to the sealing device (22) and the supporting buffer assembly (4); the right end of the upper connecting block (212) is fixedly connected to the working cylinder 2 (214); the working cylinder 2 (214) is connected to the sealing device (22); the sealing device (22) is connected to the working cylinder 1 (213); and the working cylinder 1 (213) is connected to the movable cylinder device (23).

3. The three-cylinder shock absorber structure according to claim 2, characterized in that: The sealing device (22) comprises an O-ring 1 (221), a cylindrical compression spring (222), a floating piston (223), an O-ring 3 (224), a support seat (225), a compression valve assembly (226) and an O-ring 2 (227); the outer wall of the upper connecting block (212) is fixedly connected with the O-ring 1 (221); the O-ring 1 (221) is in close contact with the inner wall of the oil storage cylinder (1); the right end of the upper connecting block (212) is fixedly connected with one end of the cylindrical compression spring (222); the other end of the cylindrical compression spring (222) is fixedly connected with the floating piston (223); The outer wall of the right end of the O-ring 1 (221) is fixedly connected with the O-ring 2 (227), the O-ring 2 (227) is fitted and connected with the inner wall of the working cylinder 2 (214), the outer wall of the left end of the floating piston (223) is fixedly connected with the floating piston (223), the floating piston (223) is fitted and contacted with the inner wall of the working cylinder 2 (214), the right end of the working cylinder 2 (214) is in contact with the support seat (225), the right end of the support seat (225) is fixedly connected with the compression valve assembly (226), and the right end of the compression valve assembly (226) is in contact with the working cylinder 1 (213).

4. The three-cylinder shock absorber structure according to claim 3, characterized in that: The movable cylinder device (23) comprises a restoring valve assembly (231), a restoring limit assembly (232), a guide assembly (233), a gasket (234), a nut body (235), a piston rod (236), a limit rubber block (237) and a nut (238); the right end of the oil storage cylinder (1) is fixedly connected to the nut body (235); the inner wall of the working cylinder (213) is slidably connected to the restoring valve assembly (231); the right end of the restoring valve assembly (231) is fixedly connected to the piston rod (236); the piston rod The left end of (236) is fixedly connected with a gasket (234), the right end of the nut body (235) is fixedly connected with a guide assembly (233), the right end of the guide assembly (233) is in contact with the working cylinder (213), the right end of the piston rod (236) is fixedly connected with a restoring limit assembly (232), the piston rod (236) is fitted and slidably connected with the nut body (235) and the guide assembly (233), and the right end of the piston rod (236) is fixedly connected with a limit rubber block (237) through a nut (238).

5. The three-cylinder shock absorber structure according to claim 4, characterized in that: The outer cylinder assembly (3) comprises a movable device (31) and a supporting device (32); the oil storage cylinder (1) is connected to the movable device (31); the movable device (31) is connected to the supporting device (32); and the supporting device (32) is connected to the supporting buffer assembly (4).

6. The three-cylinder shock absorber structure according to claim 5, characterized in that: The movable device (31) comprises a dustproof oil seal (311), a nut body (312), a skeleton oil seal (313), a self-lubricating copper sleeve (314), a support pipe (315), a self-lubricating copper sleeve (316) and a skeleton oil seal (317). The outer wall of the oil storage cylinder (1) is slidably connected with the support pipe (315), the support pipe (315) is connected to the support device (32), and the left and right ends of the support pipe (315) are respectively fixedly connected with the self-lubricating copper sleeve (314) and the self-lubricating copper sleeve (316). The outer wall of the left end of the self-lubricating copper sleeve 1 (314) is fixedly connected to a skeleton oil seal 1 (313), the outer wall of the right end of the self-lubricating copper sleeve 2 (316) is fixedly connected to a skeleton oil seal 2 (317), the left end of the self-lubricating copper sleeve 1 (314) is fixedly connected to a nut body (312), the left end of the nut body (312) is fixedly connected to a dustproof oil seal (311), and the dustproof oil seal (311), the skeleton oil seal 1 (313) and the skeleton oil seal 2 (317) are connected to the support device (32).

7. The three-cylinder shock absorber structure according to claim 6, characterized in that: The support device (32) comprises a base (321), an outer cylinder (322), a suspension mounting seat (323) and a lower bearing support seat (324); the outer wall of the support tube (315) is fitted and slidably connected to the outer cylinder (322); the inner wall of the right end of the outer cylinder (322) is fixedly connected to the base (321); the outer wall of the outer cylinder (322) is fixedly connected to the suspension mounting seat (323) and the lower bearing support seat (324); the lower bearing support seat (324) is located at the left end of the suspension mounting seat (323); the lower bearing support seat (324) is connected to the support buffer assembly (4); and the dustproof oil seal (311), the skeleton oil seal 1 (313) and the skeleton oil seal 2 (317) are fitted and contacted with the outer cylinder (322).

8. The three-cylinder shock absorber structure according to claim 7, characterized in that: The support buffer assembly (4) comprises an upper dust cover (41), an upper plane thrust bearing (42), an upper spring support (43), a coil spring (44), a lower coil spring support (45), a lower plane thrust bearing (46), and a lower dust cover (47); the upper dust cover (41) is fixedly connected to the outer wall of the upper connecting block (212); the upper plane thrust bearing (42) is fixedly connected to the right end of the upper connecting block (212); the upper plane thrust bearing (42) is fixedly connected to the right end of the upper plane thrust bearing (42); A spring upper support (43) is connected, the right end of the spring upper support (43) is fixedly connected to one end of a coil spring (44), the right end of the coil spring (44) is fixedly connected to a coil spring lower support (45), the right end of the coil spring lower support (45) is fixedly connected to a lower plane thrust bearing (46), the right end of the lower plane thrust bearing (46) is fixedly connected to a lower bearing support seat (324), and the outer wall of the lower bearing support seat (324) is fixedly connected to a lower dust cover (47).

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