Shock absorber and vehicle

Abstract

The application provides a shock absorber and a vehicle. The shock absorber comprises an oil storage cylinder assembly, a separation assembly and a piston rod assembly. The oil storage cylinder assembly comprises a shell and a working cylinder in the interior of the shell. The shell is provided with a first oil passing hole and a second oil passing hole. The separation assembly is located between the first oil passing hole and the second oil passing hole in the axial direction and separates the space between the working cylinder and the shell into a first cavity and a second cavity. The first cavity is arranged correspondingly to the first oil passing hole and is in fluid communication with the outside of the shell through the first oil passing hole. The second cavity is arranged correspondingly to the second oil passing hole and is in fluid communication with the outside of the shell through the second oil passing hole. The application can realize the active lifting purpose of the piston rod assembly and meet the demand of the vehicle for the active lifting function of the shock absorber.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and more particularly to a shock absorber and a vehicle. BACKGROUND

[0002] High-end vehicles on the market currently have a demand for active lifting of shock absorbers. The shock absorber in the related art includes a piston rod assembly and two damping valve assemblies. The two damping valve assemblies are respectively used to adjust the rebound damping force and the compression damping force. Since the two damping valve assemblies share an oil drain chamber, the shock absorber in the related art also belongs to a passive shock absorber and cannot achieve active lifting of the piston rod assembly. SUMMARY

[0003] A series of simplified concepts are introduced in the summary section, which will be further described in detail in the specific embodiments section. The summary section of the present application does not mean to attempt to limit the key features and essential technical features of the claimed technical solutions, nor to attempt to determine the protection scope of the claimed technical solutions.

[0004] To at least partially solve the above problems, the first aspect of the present application provides a shock absorber, comprising:

[0005] an oil storage cylinder assembly, the oil storage cylinder assembly comprising a shell and a working cylinder located inside the shell, the working cylinder being arranged along an axial direction of the shell, the shell being provided with a first oil passage hole and a second oil passage hole arranged along the axial direction; and

[0006] a separation assembly, the separation assembly being located between the first oil passage hole and the second oil passage hole along the axial direction, the separation assembly being sleeved on the outside of the working cylinder and being connected to the shell along a radial direction, so as to separate a spacing space between the working cylinder and the shell into a first cavity and a second cavity, the first cavity being arranged corresponding to the first oil passage hole and being in fluid communication with the outside of the shell via the first oil passage hole, and the second cavity being arranged corresponding to the second oil passage hole and being in fluid communication with the outside of the shell via the second oil passage hole.

[0007] According to the shock absorber of the first aspect of the present application, the spacing space between the working cylinder and the shell is separated into the first cavity and the second cavity by the separation assembly. When the first oil passage hole and the second oil passage hole are connected to the hydraulic pump assembly, it is helpful to actively adjust the lifting of the piston rod assembly by the hydraulic pump assembly, so as to achieve the purpose of active lifting of the piston rod assembly, and further meet the demand of the vehicle for the active lifting function of the shock absorber, so as to better adjust the body posture, suppress the pitch and roll of the vehicle, etc. Since the first cavity and the second cavity are separated from each other, the problem of hydraulic short circuit, abnormal lifting function, etc. can be effectively prevented in the process of adjusting the active lifting of the piston rod assembly.

[0008] Optionally, an inner portion of the working cylinder forms a working chamber.

[0009] The shock absorber further comprises:

[0010] a bottom valve located in an inner portion of the housing, the bottom valve connected to an end portion of the working cylinder along the axial direction, and the bottom valve located on a side of the second oil passage away from the first oil passage along the axial direction; and

[0011] a piston rod assembly including a piston member located in the working chamber to divide the working chamber into a first working chamber and a second working chamber, the second working chamber closer to the bottom valve than the first working chamber along the axial direction, the first working chamber in fluid communication with the first chamber, and the second working chamber in fluid communication with the second chamber,

[0012] the bottom valve configured such that, when a hydraulic resultant force on the bottom valve is toward the second working chamber, the bottom valve allows oil to flow from the second chamber into the second working chamber to push the piston rod assembly to rise, and when the hydraulic resultant force on the bottom valve is away from the second working chamber, the bottom valve allows oil to flow from the second working chamber into the second chamber to drive the piston rod assembly to descend.

[0013] Optionally, the shock absorber further comprises:

[0014] a first damping valve assembly connected to an outer portion of the housing, the first damping valve assembly connected in series between the first chamber and the first working chamber; and

[0015] a second damping valve assembly connected to the outer portion of the housing, the second damping valve assembly connected in series between the second chamber and the second working chamber.

[0016] Optionally, the shock absorber further comprises:

[0017] a hydraulic pump assembly located outside the housing, the hydraulic pump assembly in fluid communication with the first oil passage and the second oil passage, the hydraulic pump assembly configured to pump oil to or from the first oil passage or the second oil passage.

[0018] Optionally, the shock absorber further comprises:

[0019] a recovery accumulator connected in series between the hydraulic pump assembly and the first chamber, the recovery accumulator configured to store oil.

[0020] Optionally, the recovery accumulator is connected in series between the first oil passage and the hydraulic pump assembly.

[0021] Optionally, the damper further comprises:

[0022] a compression accumulator connected in series between the hydraulic pump assembly and the second chamber, the compression accumulator being configured to store oil.

[0023] Optionally, the compression accumulator is located outside the housing and connected in series between the second oil passage and the hydraulic pump assembly.

[0024] Optionally, the bottom valve comprises:

[0025] a bottom valve body portion having a compression hole and a compensation hole;

[0026] a compression valve portion movably covering the compression hole, the compression valve portion being configured to open the compression hole when a hydraulic force acting on the compression valve portion is in an axial direction away from the second working chamber, so as to allow oil to flow from the second working chamber to the second chamber; and

[0027] a compensation valve portion movably covering the compensation hole, the compensation valve portion being configured to open the compensation hole when a hydraulic force acting on the compensation valve portion is in the axial direction towards the second working chamber, so as to allow oil to flow from the second chamber to the second working chamber.

[0028] Optionally, the damper comprises a transition joint at least partially located in the second chamber, the transition joint having a first through hole passing through in the axial direction, the first through hole being in fluid communication with the second working chamber, and the first through hole being in a direction crossing the axial direction;

[0029] the second damping valve assembly comprising an oil inlet hole and an oil outlet hole, the oil inlet hole being in fluid communication with the first through hole,

[0030] wherein the transition joint is connected to the second damping valve assembly, or the transition joint and the second damping valve assembly are configured as one body.

[0031] Optionally, the piston member comprises:

[0032] a piston body portion having a second through hole; and

[0033] a flow-through valve portion movably covering the second through hole, the flow-through valve portion being configured to open the second through hole when a hydraulic force acting on the flow-through valve portion is in the axial direction towards the first working chamber, so as to allow oil to flow from the second working chamber to the first working chamber.

[0034] Optionally, the shock absorber further comprises:

[0035] a guide sleeve assembly connected to the working cylinder and located at a side of the piston member away from the bottom valve in the axial direction;

[0036] the piston rod assembly further comprises a rod member and a limiting member, the piston member is located between the guide sleeve assembly and the bottom valve in the axial direction, the rod member is movably arranged in the guide sleeve assembly in the axial direction, the limiting member is sleeved outside the rod member, the limiting member is located between the piston member and the guide sleeve assembly in the axial direction, and the limiting member is spaced apart from the piston member in the axial direction, and a radial outer dimension of the limiting member is smaller than a radial inner dimension of the working cylinder.

[0037] Optionally, the first damping valve assembly and the second damping valve assembly each comprise a throttle valve, and at least one of the first damping valve assembly and the second damping valve assembly comprises a check valve.

[0038] Optionally, the separation assembly comprises:

[0039] a separation ring sleeved outside the working cylinder, an outer circumferential surface of the separation ring is provided with a first sealing groove arranged in a circumferential direction, and an inner circumferential surface of the separation ring is provided with a second sealing groove arranged in the circumferential direction;

[0040] a first sealing ring connected to the first sealing groove to seal a gap between the separation ring and the housing; and

[0041] a second sealing ring connected to the second sealing groove to seal a gap between the separation ring and the working cylinder.

[0042] Optionally, the shock absorber further comprises:

[0043] a first intermediate cylinder located in the first cavity and sleeved outside the working cylinder, the first intermediate cylinder is connected to the separation assembly in the axial direction, the first intermediate cylinder separates the first cavity into a restoring cavity and a first intermediate cavity arranged in a radial direction, the restoring cavity is located outside the first intermediate cavity, the restoring cavity is in fluid communication with the first oil passage and the first intermediate cavity, and the first intermediate cavity is in fluid communication with the first working cavity; and

[0044] a second intermediate cylinder, the second intermediate cylinder being located in the second cavity and sleeved outside the working cylinder, the second intermediate cylinder being connected to the partition assembly and the bottom valve along the axial direction, the second intermediate cylinder dividing the second cavity into a compression cavity and a second intermediate cavity arranged along the radial direction, the compression cavity being located outside the second intermediate cavity, the compression cavity being in fluid communication with the second oil passage and the second intermediate cavity, the second intermediate cavity being in fluid communication with the second working cavity.

[0045] Optionally, the housing has a first end and a second end along the axial direction.

[0046] The piston rod assembly further comprises a rod member connected to the piston member and extending outside the first end of the housing along the axial direction.

[0047] The shock absorber further comprises a fork arm connected to the second end of the housing.

[0048] The second aspect of the present application provides a vehicle, the vehicle comprising:

[0049] an axle;

[0050] a vehicle body; and

[0051] the shock absorber described above, one of the oil storage cylinder assembly and the piston rod assembly being connected to the axle, the other of the oil storage cylinder assembly and the piston rod assembly being connected to the vehicle body.

[0052] According to the vehicle of the second aspect of the present application, by applying the shock absorber described above, the demand of the vehicle for the active lifting function of the shock absorber can be met, so as to better adjust the vehicle body posture, suppress the vehicle pitch and roll, etc. BRIEF DESCRIPTION OF DRAWINGS

[0053] The following drawings for the embodiments of the present application are hereby incorporated into the present application as a part of the present application for the purpose of understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0054] Figure 1 is a sectional view of a shock absorber according to a preferred embodiment of the present application;

[0055] Figure 2 is Figure 1 is a partial perspective view of the shock absorber shown;

[0056] Figure 3 is Figure 1 is a sectional view of a base shown; and

[0057] Figure 4 is Figure 1A sectional view of the partition assembly.

[0058] Reference numerals:

[0059] 100: oil reservoir cylinder assembly 100a: restoration cavity

[0060] 100b: first working cavity 100c: second working cavity

[0061] 100d: first intermediate cavity 100e: compression cavity

[0062] 100f: second intermediate cavity 110: bottom valve

[0063] 111: bottom valve body part 111b: compression hole

[0064] 111c: compensation hole 112: compensation valve part

[0065] 113: compression valve part 120: housing

[0066] 121: oil reservoir cylinder 122: base

[0067] 122a: first oil passage hole 122b: second oil passage hole

[0068] 122c: restoration oil passage hole 122d: compression oil passage hole

[0069] 122e: port 122f: convex ring

[0070] 123: threaded sleeve 124: sealing end cover

[0071] 125: bottom cover 130: first intermediate cylinder

[0072] 130a: first intermediate oil passage hole 131: second intermediate cylinder

[0073] 131a: second intermediate oil passage hole 140: working cylinder

[0074] 140a: first working oil passage hole 140b: second working oil passage hole

[0075] 150: connecting block 150a: first oil inlet and outlet hole

[0076] 150b: second oil inlet and outlet hole 160: first valve seat

[0077] 161: second valve seat 170: guide sleeve assembly

[0078] 171: oil seal assembly 180: partition assembly

[0079] 181: partition ring 181a: inner ring portion

[0080] 181b: outer ring portion 181c: first seal groove

[0081] 181d: second seal groove 181e: first stopper

[0082] 181f: second stopper 182: first seal ring

[0083] 183: second seal ring 200: piston rod assembly

[0084] 210: rod member 220: piston member

[0085] 221: piston body portion 221a: second through hole

[0086] 222: flow passage valve portion 230: position limiting member

[0087] 250: buffer member 300: first damping valve assembly

[0088] 310: throttle valve 320: check valve

[0089] 500b: oil outlet hole 510: second damping valve body

[0090] 520: end cover 530: transition joint

[0091] 530a: first through hole 600: hydraulic pump assembly

[0092] 700: restoration accumulator 710: compression accumulator

[0093] 720: first oil pipe 730: second oil pipe

[0094] 800: fork arm DETAILED DESCRIPTION

[0095] In the following description, numerous specific details are given to provide a thorough understanding of the application. However, it will be apparent that the application can be practiced without one or more of the specific details. In other instances, well-known

[0096] For a thorough understanding of the application, reference is made to the following description taken in conjunction with the accompanying drawings. It is apparent that the application can be practiced with the specific details set forth in connection with the

[0097] It is to be understood that the terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting of the present application, and that singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. When the term "comprising" or "including" is used in the specification, it is taken to mean that the process, method, article, or apparatus includes, but is not limited to, the recited features, integers, steps, operations, elements, or components, and that the process, method, article, or apparatus can comprise other features, integers, steps, operations, elements, components, or combinations thereof not expressly recited. The terms "upper," "lower," "front," "back," "left," "right," and similar terms are used only for ease of description and are not intended to be limiting.

[0098] The ordinal numbers such as "first" and "second" used in the present application are merely identifiers and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first member" does not by itself imply the existence of a "second member", and the term "second member" does not by itself imply the existence of a "first member".

[0099] Hereinafter, a specific embodiment of the present application will be described in more detail with reference to the accompanying drawings, which illustrate a representative embodiment of the present application and are not intended to limit the present application.

[0100] The present application provides a damper. The damper is used for a vehicle. The damper can be, for example, a part of a suspension assembly of the vehicle. The vehicle can include an axle (not shown) and a vehicle body (not shown). The damper is connected between the vehicle body and the axle to damp or attenuate a vibration received by the vehicle body.

[0101] Hereinafter, a specific embodiment of the present application will be described in more detail with reference to the accompanying drawings, which illustrate a representative embodiment of the present application and are not intended to limit the present application. Figures 1 to 4 The illustrated embodiment will be described in detail with respect to the damper according to the present application.

[0102] The shock absorber according to the present application can include an oil reservoir cylinder assembly 100, a partition assembly 180, and a piston rod assembly 200. The oil reservoir cylinder assembly 100 includes a housing 120 and a working cylinder 140 located inside the housing 120. The housing 120 herein can be a structure with a circular or close-to-circular cross section. The outer contour of the housing 120 is generally cylindrical, and the radial outer dimensions of different axial parts of the cylindrical shape can be different, such as being variable. In the mounted state of the damping-adjustable shock absorber according to the present application mounted to a vehicle, the axial direction of the housing 120 herein is generally along the height direction of the vehicle, i.e., the axial direction of the housing 120 is not parallel to the horizontal direction in the mounted state. The working cylinder 140 is arranged extending along the axial direction of the housing 120. The housing 120 is provided with a first oil passage hole 122a and a second oil passage hole 122b arranged axially spaced apart. The second oil passage hole 122b is located axially between the first oil passage hole 122a and the bottom valve 110. The partition assembly 180 is located axially between the first oil passage hole 122a and the second oil passage hole 122b. The partition assembly 180 is sleeved on the outside of the working cylinder 140 and connected to the housing 120 in the radial direction, so as to divide the spacing space between the working cylinder 140 and the housing 120 into a first cavity and a second cavity. The first cavity is arranged corresponding to the first oil passage hole 122a and is in fluid communication with the outside of the housing 120 via the first oil passage hole 122a. The arrangement of the first cavity corresponding to the first oil passage hole 122a herein can be understood as that, along the axial direction of the housing 120, the position of the first cavity corresponds to the position of the first oil passage hole 122a. The second cavity is arranged corresponding to the second oil passage hole 122b and is in fluid communication with the outside of the housing 120 via the second oil passage hole 122b. The first oil passage hole 122a and the second oil passage hole 122b herein are respectively used to connect the external hydraulic pump assembly 600.

[0103] The shock absorber according to the present application divides the spacing space between the working cylinder 140 and the housing 120 by the partition assembly 180 into a first cavity and a second cavity. When the first oil passage hole 122a and the second oil passage hole 122b are connected to the external hydraulic pump assembly 600, it is helpful to actively adjust the lifting of the piston rod assembly 200 by the hydraulic pump assembly 600, so as to achieve the active lifting purpose of the piston rod assembly 200, and further meet the demand of the vehicle for the active lifting function of the shock absorber, so as to better adjust the body posture, suppress the pitch and roll of the vehicle, etc. Since the first cavity and the second cavity are separated from each other, it is possible to effectively prevent hydraulic short circuit, abnormal lifting function, etc. during the adjustment of the active lifting of the piston rod assembly 200.

[0104] Further, the shock absorber can further include a bottom valve 110 and a piston rod assembly 200. The bottom valve 110 is connected to one end of the working cylinder 140 in the axial direction, and the other end of the working cylinder 140 is connected to the housing 120. A working chamber is formed between the inner circumferential surface of the working cylinder 140, the bottom valve 110, and the housing 120. The piston rod assembly 200 can include a piston member 220. The piston member 220 is located in the working chamber to divide the working chamber into a first working chamber 100b and a second working chamber 100c. The second working chamber 100c is closer to the bottom valve 110 in the axial direction than the first working chamber 100b. The first working chamber 100b is in fluid communication with the first chamber. The second working chamber 100c is in fluid communication with the second chamber. When the first oil passage 122a and the second oil passage 122b are connected to an external hydraulic pump assembly 600, respectively, the oil pressure of the first working chamber 100b and the second working chamber 100c can be adjusted by the external hydraulic pump assembly 600, so as to achieve the purpose of adjusting the active lifting of the piston rod assembly 200.

[0105] The bottom valve 110 is configured such that:

[0106] When the hydraulic resultant force on the bottom valve 110 is in the axial direction of the housing 120 and towards the second working chamber 100c, the bottom valve 110 allows oil to flow from the second chamber into the second working chamber 100c to push the piston rod assembly 200 to rise; when the hydraulic resultant force on the bottom valve 110 is in the axial direction of the housing 120 and away from the second working chamber 100c, the bottom valve 110 allows oil to flow from the second working chamber 100c into the second chamber to drive the piston rod assembly 200 to descend.

[0107] Further, the shock absorber can further include a first damping valve assembly 300 and a second damping valve assembly 500. The first damping valve assembly 300 is connected to the outer side of the housing 120. The first damping valve assembly 300 is connected in series between the first chamber and the first working chamber 100b. The second damping valve assembly 500 is connected to the outer side of the housing 120, and the second damping valve assembly 500 is connected in series between the second chamber and the second working chamber 100c. By providing the first damping valve assembly 300 and the second damping valve assembly 500, the damping force in the axial direction on the piston rod assembly 200 can be adjusted, so as to achieve the purpose of adjusting the speed of the axial movement of the piston rod assembly 200.

[0108] For example, the first damping valve assembly 300 and the second damping valve assembly 500 can each include a throttle valve. At least one of the first damping valve assembly 300 and the second damping valve assembly 500 includes a check valve.

[0109] Further, the first damping valve assembly 300 can include a check valve 320 and a throttle valve 310 in parallel with each other. The parallel check valve 320 and throttle valve 310 constitute a combined valve. The combined valve is connected in series between the first working oil hole 140a of the working cylinder 140 and the recovery oil hole 122c of the housing 120, so that the first working chamber 100b is fluidly connected to the first chamber or a recovery chamber 100a to be mentioned below via the combined valve. The check valve 320 allows oil to flow from the recovery chamber 100a to the first working chamber 100b via the intermediate chamber. The throttle valve 310 throttles oil flowing from the first working chamber 100b to the recovery chamber 100a via the intermediate chamber. The second damping valve assembly 500 includes a throttle valve. The throttle valve is connected in series between the second working oil hole 140b of the working cylinder 140 and the compression oil hole 122d of the housing 120. The throttle valve throttles oil flowing therethrough.

[0110] Alternatively, the first damping valve assembly 300 and the second damping valve assembly 500 can alternatively employ solenoid valves having corresponding functions. By controlling the throttling performance of the first damping valve assembly 300 and the second damping valve assembly 500, the purpose of adjusting the damping force and the active lifting speed of the piston rod can be achieved.

[0111] In addition, the shock absorber can further include a hydraulic pump assembly 600. The hydraulic pump assembly 600 is located outside the housing 120. The hydraulic pump assembly 600 is fluidly connected to the first oil hole 122a and the second oil hole 122b. The hydraulic pump assembly 600 is used to pump oil to or from the first oil hole 122a or the second oil hole 122b. By pumping oil to the first oil hole 122a or pumping oil from the second oil hole 122b by the hydraulic pump assembly 600, a positive pressure difference from the first working chamber 100b to the second working chamber 100c can be generated at the piston member 220, thereby assisting in pushing the piston member 220 to move towards the second space, and thus achieving the purpose of active retraction of the piston rod assembly 200. The process of pumping oil to the first oil hole 122a by the hydraulic pump assembly 600 and the process of pumping oil from the second oil hole 122b by the hydraulic pump assembly 600 can be performed simultaneously. By pumping oil to the second oil hole 122b or pumping oil from the first oil hole 122a by the hydraulic pump assembly 600, a positive pressure difference from the second working chamber 100c to the first working chamber 100b can be generated at the piston member 220, thereby assisting in pushing the piston member 220 to move away from the second space, and thus achieving the purpose of active extension of the piston rod assembly 200. The process of pumping oil to the second oil hole 122b by the hydraulic pump assembly 600 and the process of pumping oil from the first oil hole 122a by the hydraulic pump assembly 600 can be performed simultaneously.

[0112] Further, the damper can further include a recovery accumulator 700 and a compression accumulator 710.

[0113] The recovery accumulator 700 is connected in series between the hydraulic pump assembly 600 and the first chamber. The recovery accumulator 700 is used to store oil. For example, the recovery accumulator 700 can be used to temporarily store oil output from the first oil passage 122a to the outside of the housing 120. For another example, the recovery accumulator 700 can be used to temporarily store oil drawn by the hydraulic pump assembly 600 from the second oil passage 122b. Alternatively, the recovery accumulator 700 can be used to temporarily store oil output from the first oil passage 122a to the outside of the housing 120 and to temporarily store oil drawn by the hydraulic pump assembly 600 from the second oil passage 122b.

[0114] The compression accumulator 710 is connected in series between the hydraulic pump assembly 600 and the second chamber. The compression accumulator 710 is used to store oil. For example, the compression accumulator 710 can be used to temporarily store oil output from the second oil passage 122b to the outside of the housing 120. For another example, the compression accumulator 710 can be used to temporarily store oil drawn by the hydraulic pump assembly 600 from the first oil passage 122a. Alternatively, the compression accumulator 710 can be used to temporarily store oil output from the second oil passage 122b to the outside of the housing 120 and to temporarily store oil drawn by the hydraulic pump assembly 600 from the first oil passage 122a.

[0115] Optionally, the damper can include at least one recovery accumulator 700. At least one of the at least one recovery accumulator 700 is located outside the housing 120 and connected in series between the first oil passage 122a and the hydraulic pump assembly 600. The compression accumulator 710 is located outside the housing 120 and connected in series between the second oil passage 122b and the hydraulic pump assembly 600. This helps to reduce the occupation of the internal space of the housing 120, thereby helping to improve the utilization of the internal space of the housing 120 and to realize the miniaturization of the external dimensions of the oil storage cylinder assembly 100.

[0116] For example, the bottom valve 110 can include a bottom valve body portion 111, a compression valve portion 113, and a compensation valve portion 112. The bottom valve body portion 111 is provided with a compression hole 111b and a compensation hole 111c. The compression valve portion 113 is movably provided on the compression hole 111b. The compression valve portion 113 is configured to open the compression hole 111b when a hydraulic force acting on the compression valve portion 113 is in an axial direction away from the second working chamber 100c, so as to allow the oil to flow from the second working chamber 100c to the second chamber. The compensation valve portion 112 is movably provided on the compensation hole 111c. The compensation valve portion 112 is configured to open the compensation hole 111c when a hydraulic force acting on the compensation valve portion 112 is in an axial direction toward the second working chamber 100c, so as to allow the oil to flow from the second chamber to the second working chamber 100c. The compression valve portion 113 can play a role of overload protection during the fast retraction of the piston rod assembly 200.

[0117] For example, the damper can include a transition joint 530. The transition joint 530 is at least partially located in the second chamber, such as extending into the second chamber. The transition joint 530 is in an axial direction intersecting an axial direction of the housing 120 in the mounted state. The transition joint 530 is provided with a first through hole 530a extending in the axial direction. The first through hole 530a is in fluid communication with the second working chamber 100c. The first through hole 530a is in a hole depth direction intersecting the axial direction. The second damping valve assembly 500 includes an oil inlet hole (not labeled) and an oil outlet hole 500b. The oil inlet hole is used for flowing in oil. The oil outlet hole 500b is used for flowing out oil. The oil inlet hole is in fluid communication with the first through hole 530a and the second working chamber 100c.

[0118] Further, the second damping valve assembly 500 and the transition joint 530 can be detachably connected to each other by abutting against each other in the axial direction, etc. Alternatively, the second damping valve assembly 500 and the transition joint 530 can be fixedly connected by welding, etc. That is, the transition joint 530 is connected to the second damping valve assembly 500, or the transition joint 530 and the second damping valve assembly 500 are configured as one body.

[0119] In the illustrated example, the second damping valve assembly 500 can include an end cover 520. The end cover 520 is configured as an annular member. The oil inlet hole is at least partially located in the end cover 520. One end of the transition joint 530 in the axial direction abuts against the end cover 520, and the other end of the transition joint 530 in the axial direction is directly or indirectly connected to the working cylinder 140. Thus, the second working chamber 100c is in fluid communication with the second damping valve assembly 500 via the first through hole 530a and the oil inlet hole in turn.

[0120] In an example not shown, the transition joint 530 can be part of the second damping valve assembly 500. For example, the transition joint 530 and the above-mentioned end cover 520 are configured as one body, or are fixedly connected.

[0121] For example, the piston member 220 can include a piston body portion 221 and a flow passage valve portion 222. The piston body portion 221 has a second through hole 221a. The flow passage valve portion 222 is movably covered on the second through hole 221a. The flow passage valve portion 222 is configured to open the second through hole 221a when a hydraulic force is received along the axial direction towards the first working chamber 100b, to allow the oil to flow from the second working chamber 100c into the first working chamber 100b. By providing the second through hole 221a and the flow passage valve portion 222, the purpose of overloading protection of the second working chamber 100c and even the working cylinder 140 can be achieved, thereby preventing the second working chamber 100c from overloading during the rapid retraction of the piston rod assembly 200.

[0122] In addition, the shock absorber can further include a first intermediate cylinder 130 and a second intermediate cylinder 131. The first intermediate cylinder 130 is located in the first cavity and is sleeved on the outside of the working cylinder 140. The first intermediate cylinder 130 is connected to the partition assembly 180 in the axial direction. The first intermediate cylinder 130 divides the first cavity into a recovery cavity 100a and a first intermediate cavity 100d arranged in the radial direction. The recovery cavity 100a is located on the outside of the first intermediate cavity 100d. The recovery cavity 100a is in fluid communication with the first oil passage hole 122a and the first intermediate cavity 100d. The first intermediate cavity 100d is in fluid communication with the first working chamber 100b. The second intermediate cylinder 131 is located in the second cavity and is sleeved on the outside of the working cylinder 140. The second intermediate cylinder 131 is connected to the partition assembly 180 and the bottom valve 110 in the axial direction. The second intermediate cylinder 131 divides the second cavity into a compression cavity 100e and a second intermediate cavity 100f arranged in the radial direction. The compression cavity 100e is located on the outside of the second intermediate cavity 100f. The compression cavity 100e is in fluid communication with the second oil passage hole 122b and the second intermediate cavity 100f. The second intermediate cavity 100f is in fluid communication with the second working chamber 100c.

[0123] Further, the first intermediate cylinder 130 is provided with a first intermediate oil passage hole 130a. The first intermediate oil passage hole 130a is connected to the first damping valve assembly 300 to fluidly connect the first damping valve assembly 300 to the first intermediate cavity 100d. The second intermediate cylinder 131 is provided with a second intermediate oil passage hole 131a. The second intermediate oil passage hole 131a is connected to the transition joint 530. The working cylinder 140 is provided with a first working oil passage hole 140a and a second working oil passage hole 140b. The first working oil passage hole 140a is in communication with the first working chamber 100b and the first intermediate cavity 100d. The second working oil passage hole 140b is in communication with the second working chamber 100c and the second intermediate cavity 100f.

[0124] Further, the damper-adjustable shock absorber can further comprise a guide sleeve assembly 170. The guide sleeve assembly 170 is connected to the working cylinder 140 and axially located on the side of the piston member 220 away from the bottom valve 110. The piston member 220 is axially located between the guide sleeve assembly 170 and the bottom valve 110. The piston rod assembly 200 can further comprise a rod member 210 and a limiting member 230. The rod member 210 is movably arranged in the guide sleeve assembly 170 along the axial direction of the housing 120. The limiting member 230 is sleeved on the outer side of the rod member 210. The limiting member 230 is axially located between the piston member 220 and the guide sleeve assembly 170. The limiting member 230 is axially spaced from the piston member 220. The limiting member 230 has an outer radial dimension smaller than the inner radial dimension of the working cylinder 140. The guide sleeve assembly 170 can guide the axial movement of the rod member 210. The limiting member 230 can prevent the piston member 220 from completely compressing the first working chamber 100b when moving axially away from the bottom valve 110 to the limit position, i.e., to ensure that the first working chamber 100b always exists. Similarly, the piston rod assembly 200 can further comprise another limiting structure (not labeled). The limiting structure is located in the second working chamber 100c and connected to the rod member 210, for preventing the piston member 220 from completely compressing the second working chamber 100c when moving axially towards the bottom valve 110 to the limit position, so as to ensure that the second working chamber 100c always exists.

[0125] Further, the piston rod assembly 200 can further comprise a buffer member 250. The buffer member 250 is located on the side of the limiting member 230 away from the bottom valve 110 and fixed relative to the limiting member 230. The buffer member 250 is configured as a soft elastic structure. The soft elastic structure can be one of rubber, silicone rubber, silica gel, etc.

[0126] For example, the partition assembly 180 can comprise a partition ring 181, a first sealing ring 182 and a second sealing ring 183. The partition ring 181 is sleeved on the outer side of the working cylinder 140. The outer circumferential surface of the partition ring 181 is provided with a first sealing groove 181c arranged in the circumferential direction. The inner circumferential surface of the partition ring 181 is provided with a second sealing groove 181d arranged in the circumferential direction. The first sealing ring 182 is connected to the first sealing groove 181c to seal the gap between the partition ring 181 and the housing 120. The second sealing ring 183 is connected to the second sealing groove 181d to seal the gap between the partition ring 181 and the working cylinder 140.

[0127] Further, the partition ring 181 includes an inner ring portion 181a and two outer ring portions 181b. The inner circumferential surface of the inner ring portion 181a is provided with a second seal groove 181d. The outer ring portions 181b are sleeved on the outer side of the inner ring portion 181a. The two outer ring portions 181b are arranged axially spaced apart. The outer circumferential surface between the two outer ring portions 181b and the inner ring portion 181a defines a first seal groove 181c. The two ends of the inner ring portion 181a along the axial direction thereof respectively protrude axially beyond the outer portions of the outer ring portions 181b. The portion of the inner ring portion 181a facing the first intermediate cavity 100d and the adjacent outer ring portion 181b form a first stop 181e. The first stop 181e is in abutting stop cooperation with the end portion of the first intermediate cylinder 130 facing the second intermediate cylinder 131. The axially extending surface of the first stop 181e abuts against the inner circumferential surface of the first intermediate cylinder 130. The radially extending surface of the first stop 181e abuts against the end surface of the first intermediate cylinder 130. The portion of the inner ring portion 181a facing the second intermediate cavity 100f and the adjacent outer ring portion 181b form a second stop 181f. The second stop 181f is in abutting stop cooperation with the end portion of the second intermediate cylinder 131 facing the first intermediate cylinder 130. The axially extending surface of the second stop 181f abuts against the inner circumferential surface of the second intermediate cylinder 131. The radially extending surface of the second stop 181f abuts against the end surface of the second intermediate cylinder 131.

[0128] For example, the housing 120 has a first end and a second end axially opposite to each other. The rod member 210 of the piston rod assembly 200 is connected to the piston member 220 and extends axially beyond the first end of the housing 120. The shock absorber further includes a fork arm 800. The fork arm 800 is connected to the second end of the housing 120.

[0129] In the illustrated example, the fork arm 800 is configured as a U-shaped member. The U-shaped member includes a middle portion and two side portions arranged oppositely. The middle portion is fixed to the end portion of the second end of the housing 120. The two side portions extend away from the housing 120 along the axial direction of the housing 120. The side portions are provided with connecting holes for mounting to the vehicle by fasteners.

[0130] According to the vehicle with the above-described shock absorber of the present application, one of the oil reservoir cylinder assembly 100 and the piston rod assembly 200 is connected to the axle, and the other of the oil reservoir cylinder assembly 100 and the piston rod assembly 200 is connected to the vehicle body.

[0131] According to the vehicle of the present application, by applying the above-described shock absorber, the demand of the vehicle for the active lifting function of the shock absorber can be met, so as to better adjust the vehicle body posture, suppress the vehicle pitch and roll, etc.

[0132] Hereinafter, refer to Figures 1 to 4 The shock absorber according to the present embodiment is further described.

[0133] The damper provided by the application is arranged with a first damping valve assembly 300 and a second damping valve assembly 500 for adjusting damping force respectively, the second damping valve assembly 500 is arranged at the side of the damper, the first damping valve assembly 300 is also arranged at the side of the damper, and the first damping valve assembly 300 and the second damping valve assembly 500 are arranged in up and down directions along the central axis of the damper. The application is provided with a separation ring 181, the central axis of the separation ring 181 is parallel to the central axis of the damper, the inner ring surface of the separation ring 181 is matched with the outer circumferential surface hole of the working cylinder 140, the outer circumferential surface of the outer ring part 181b is matched with the inner circumferential surface hole of the convex ring 122f on the inner side of the base 122, the separation ring 181 separates the recovery cavity 100a and the compression cavity 100e into two independent chambers, and the separation ring 181 also separates the first intermediate cavity 100d and the second intermediate cavity 100f into two independent chambers. The first oil inlet and outlet hole 150a is led out from the recovery cavity 100a, the second oil inlet and outlet hole 150b is led out from the compression cavity 100e, and the first oil inlet and outlet hole 150a and the second oil inlet and outlet hole 150b are respectively distributed on the upper and lower sides of the separation ring 181 along the central axis direction of the damper. The first damping valve assembly 300 and the second damping valve assembly 500 are respectively distributed on the upper and lower sides of the separation ring 181 along the central axis direction of the damper, and the recovery cavity 100a and the compression cavity 100e are respectively distributed on the upper and lower sides of the separation ring 181 along the central axis direction of the damper. The application comprises a hydraulic pump and two accumulators, the hydraulic pump assembly 600 is connected and arranged between the recovery cavity 100a and the compression cavity 100e through an external oil pipe, the recovery accumulator 700 is connected in series between the recovery cavity 100a and the hydraulic pump assembly 600, the compression accumulator 710 is connected in series between the compression cavity 100e and the hydraulic pump assembly 600, and at least one compression accumulator 710 is arranged outside the damper. The accumulator can be arranged in the recovery cavity 100a or outside the damper.

[0134] According to the damper of the application, the oil storage cylinder assembly 100 comprises an oil storage cylinder 121, a fork arm 800, a base 122, a bottom cover 125, a first valve seat 160, a second valve seat 161 and an oil pipe connecting block 150. The components connected to each other can be connected by welding.

[0135] The piston rod assembly 200 can include a piston member 220, a limit member 230, a buffer member 250, a guide sleeve assembly 170, an oil seal assembly 171 and a rod member 210. The working cylinder 140, the first intermediate cylinder 130, the second intermediate cylinder 131, the bottom valve 110 and the compensation valve part 112 constitute a working cylinder 140 bottom valve 110 combination. The working cylinder 140 bottom valve 110 combination is installed on the inner bottom surface of the bottom cover 125 through the bottom valve 110. The connecting rod piston combination cooperates with the inner wall shaft hole of the working cylinder 140 through the outer circular surface of the piston member 220. The outer circular surface of the guide sleeve assembly 170 cooperates with the inner wall shaft hole of the threaded sleeve 123 and is sealed by a sealing ring. The sealing end cover 124 is fastened and connected with the threaded sleeve 123 through threads and presses the guide sleeve assembly 170, so as to constrain and lock the connecting rod piston combination and the working cylinder 140 bottom valve 110 combination in the oil storage cylinder assembly 100.

[0136] The second intermediate joint is welded on the second intermediate cylinder 131 and communicates with the second intermediate cavity 100f of the second intermediate cylinder 131 through the second intermediate oil passing hole 131a. The transition joint 530 cooperates with the second intermediate joint shaft hole and is sealed by a sealing ring. The bottom plane of the second valve seat 161 provides a limiting support for the transition joint 530. Taking the solenoid valve as an example, the end cover 520 of the solenoid valve cooperates with the end surface of the transition joint 530. The shell of the solenoid valve cooperates with the inner surface of the second valve seat 161 and is sealed by a sealing ring. The inner surface of the gland is threadedly connected with the outer surface of the second valve seat 161 and is sealed by a sealing ring. The end surface of the gland presses the end surface of the solenoid valve, so as to constrain and lock the solenoid valve in the second valve seat 161. The solenoid coil of the solenoid valve cooperates with the solenoid valve shaft hole and is constrained and locked in the solenoid valve by a snap spring.

[0137] The inner circumferential surface of the partition ring 181 is axially fitted with the outer circumferential surface of the working cylinder 140. The second sealing ring 183 is installed in the second sealing groove 181d of the partition ring 181 for sealing the working cylinder 140 and the partition ring 181, thereby separating the first intermediate chamber 100d and the second intermediate chamber 100f into two independent chambers. The lower end inner circumferential surface of the first intermediate cylinder 130 is axially fitted with the outer circumferential surface of the inner ring portion 181a. The axial fitting here can be an interference fit to seal the first intermediate cylinder 130 and the partition ring 181. The upper end inner circumferential surface of the second intermediate cylinder 131 is axially fitted with the outer circumferential surface of the lower end of the inner ring portion 181a. The axial fitting here is also an interference fit to seal the second intermediate cylinder 131 and the partition ring 181. The base 122 can be configured as a circular tube. The base 122 includes a port 122e for connecting the oil reservoir cylinder 121. The inner surface of the base 122 is formed with a radially protruding convex ring 122f. The outer circumferential surface of the outer ring portion 181b is axially fitted with the inner circumferential surface of the convex ring 122f. The first sealing ring 182 is installed in the first sealing groove 181c for sealing the outer circumferential surface of the partition ring 181 and the inner circumferential surface of the base 122. The radial dimension of the inner circumferential surface of the convex ring 122f is smaller than the radial dimension of the inner circumferential surface of the rest of the base 122. The advantage of this is that during the installation of the first sealing ring 182 into the inner cavity of the base 122, it can be prevented from being scratched by the edges of the holes of the base 122, such as the recharging oil hole 122c, the compression oil hole 122d, the first oil hole 122a, and the second oil hole 122b. The partition ring 181 separates the recharging chamber 100a and the compression chamber 100e into two independent chambers. The first damping valve assembly 300 is installed and arranged on the side of the oil reservoir cylinder 121 and above the partition ring 181. The first damping valve assembly 300 and the second damping valve assembly 500 are arranged on both sides of the partition ring 181 in the direction of the central axis of the shock absorber, respectively.

[0138] The oil pipe connecting block 150 is attached to the base 122 by welding. The first oil inlet and outlet hole 150a is aligned and communicates with the first oil hole 122a. The second oil inlet and outlet hole 150b is aligned and communicates with the second oil hole 122b. One end of the first oil pipe 720 is connected to the first oil inlet and outlet hole 150a, and the other end is connected to one of the oil inlet and outlet holes 500b of the hydraulic pump. One end of the second oil pipe 730 is connected to the second oil inlet and outlet hole 150b, and the other end is connected to the other oil inlet and outlet hole 500b of the hydraulic pump. The compression accumulator 710 is arranged in series between the compression chamber 100e and the hydraulic pump assembly 600. The compression accumulator 710 is arranged outside the shock absorber. The recharging accumulator 700 can be arranged in series between the recharging chamber 100a and the hydraulic pump assembly 600 and arranged outside the shock absorber. The recharging accumulator 700 can also be integrated in the form of an air bag inside the recharging chamber 100a.

[0139] During the compression stroke of the piston rod assembly 200, the piston member 220 moves towards the bottom valve 110, and the volume of the second working chamber 100c becomes smaller. During this process, the oil in the second working chamber 100c flows into the second intermediate chamber 100f through the second working oil hole 140b; then, into the transition joint 530 through the second intermediate oil hole 131a; then, into the second damping valve assembly 500; after being throttled by the second damping valve assembly 500, the oil flows out from the oil outlet hole 500b into the compression chamber 100e; then, into the second oil pipe 730 through the second inlet and outlet oil hole 150b; and finally, into the compression accumulator 710. During the compression stroke, the compression accumulator 710 absorbs the oil, and the piston member 220 moves towards the bottom valve 110, which causes the volume of the first working chamber 100b to become larger. During this process, the oil in the recovery chamber 100a enters the first intermediate oil hole 130a through the one-way valve 320; then, flows into the first working oil hole 140a through the first intermediate chamber 100d; and finally, the oil fills the first working chamber 100b, and the recovery accumulator 700 releases the oil during the compression stroke. When the compression stroke speed is very fast, part of the high-pressure oil in the second working chamber 100c can push the flow-through valve part 222 of the piston member 220 to enter the first working chamber 100b. When the compression stroke speed is very fast, part of the high-pressure oil in the second working chamber 100c can also push the compression valve part 113 to enter the compression chamber 100e. The flow-through valve part 222 and the compression valve part 113 play the role of overload protection. The compression damping force can be controlled and adjusted by the second damping valve assembly 500.

[0140] During the recovery stroke of the piston rod assembly 200, the piston member 220 moves away from the bottom valve 110, so that the volume of the first working chamber 100b becomes smaller and the volume of the second working chamber 100c becomes larger. During this process, the oil in the first working chamber 100b flows into the first intermediate chamber 100d through the first working oil hole 140a; then, enters the first damping valve assembly 300 through the first intermediate oil hole 130a; and the oil flows into the recovery chamber 100a after being throttled by the throttle valve 310. During the recovery stroke, the recovery accumulator 700 absorbs the oil. During this process, the oil in the compression chamber 100e pushes open the compensation valve part 112 through the compensation hole 111c of the bottom valve 110, and finally fills the second working chamber 100c with oil. During the recovery stroke, the compression accumulator 710 releases the oil. The recovery damping force can be controlled and adjusted by the first damping valve assembly 300.

[0141] The process of the damper according to the present application to achieve the fast lifting, i.e. the fast extension of the piston rod assembly 200, is as follows: the hydraulic pump assembly 600 pumps high pressure oil into the second oil pipe 730, so that the high pressure oil enters the compression chamber 100e; then, the high pressure oil pushes the compensation valve part 112 of the bottom valve 110 in the compression chamber 100e, so as to flow from the compensation hole 111c of the bottom valve 110 into the second working chamber 100c, so that the second working chamber 100c is filled with high pressure oil. At this time, the oil pressure in the first working chamber 100b is relatively low, and the pressure difference will generate a thrust on the piston member 220 towards the first working chamber 100b, so that the rod member 210 is lifted fast, i.e. extended fast. In the process of the fast lifting of the rod member 210, the oil in the first working chamber 100b flows into the first intermediate chamber 100d through the first working oil hole 140a; then, the oil enters the first damping valve assembly 300 through the first intermediate oil hole 130a; the oil flows into the recovery chamber 100a after throttling by the throttle valve 310. In this process, the throttling capacity of the first damping valve assembly 300 can be set to be the weakest, so as to generate the force to lift the rod member 210. In this process, the hydraulic pump assembly 600 pumps the oil in the recovery chamber 100a out of the first oil pipe 720 and into the second oil pipe 730. In the lifting stroke, the oil in the first working chamber 100b is pumped by the hydraulic pump assembly 600 to the second working chamber 100c.

[0142] The process of the damper according to the present application to achieve the fast lifting, i.e. the fast extension of the piston rod assembly 200, is as follows: the hydraulic pump assembly 600 pumps high pressure oil into the second oil pipe 730, so that the high pressure oil enters the compression chamber 100e; then, the high pressure oil pushes the compensation valve part 112 of the bottom valve 110 in the compression chamber 100e, so as to flow from the compensation hole 111c of the bottom valve 110 into the second working chamber 100c, so that the second working chamber 100c is filled with high pressure oil. At this time, the oil pressure in the first working chamber 100b is relatively low, and the pressure difference will generate a thrust on the piston member 220 towards the first working chamber 100b, so that the rod member 210 is lifted fast, i.e. extended fast. In the process of the fast lifting of the rod member 210, the oil in the first working chamber 100b flows into the first intermediate chamber 100d through the first working oil hole 140a; then, the oil enters the first damping valve assembly 300 through the first intermediate oil hole 130a; the oil flows into the recovery chamber 100a after throttling by the throttle valve 310. In this process, the throttling capacity of the first damping valve assembly 300 can be set to be the weakest, so as to generate the force to lift the rod member 210. In this process, the hydraulic pump assembly 600 pumps the oil in the recovery chamber 100a out of the first oil pipe 720 and into the second oil pipe 730. In the lifting stroke, the oil in the first working chamber 100b is pumped by the hydraulic pump assembly 600 to the second working chamber 100c.

[0143] According to the damper of the present application, two electromagnetic valves can be provided as the first damping valve assembly 300 and the second damping valve assembly 500 respectively. The center axis of the partition ring 181 is parallel to the center axis of the damper. The two electromagnetic valves are distributed on both sides of the partition ring 181 along the direction of the center axis of the damper. The recovery cavity 100a and the compression cavity 100e are distributed on both sides of the partition ring 181 along the direction of the center axis of the damper. The damper according to the present application can have two accumulators and one hydraulic pump assembly 600. At least one accumulator is arranged outside the damper. According to the damper of the present application, the recovery damping force and the compression damping force are independently adjustable, and the damper has the functions of rapid lifting and rapid lowering, and the radial size of the damper is small, which facilitates the installation and arrangement of the damper on the chassis suspension of the whole vehicle.

[0144] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0145] The present application has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and illustration, and are not intended to limit the present application to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of the present application.

Claims

1. A shock absorber, characterized in that: The shock absorber comprises: An oil storage cylinder assembly, the oil storage cylinder assembly comprising a housing and a working cylinder located inside the housing, the working cylinder extending along the axial direction of the housing, the housing being provided with a first oil passage hole and a second oil passage hole spaced apart along the axial direction; and A partition assembly, the partition assembly is located between the first oil hole and the second oil hole along the axial direction, the partition assembly is sleeved on the outside of the working cylinder and radially connected to the housing to divide the interval space between the working cylinder and the housing into a first chamber and a second chamber, the first chamber is correspondingly arranged with the first oil hole and is fluidically connected to the outside of the housing via the first oil hole, and the second chamber is correspondingly arranged with the second oil hole and is fluidically connected to the outside of the housing via the second oil hole, wherein The interior of the working cylinder forms a working chamber; The shock absorber further comprises: a bottom valve located inside the housing, connected to an end portion of the working cylinder in the axial direction, and located on a side of the second oil hole away from the first oil hole in the axial direction; and A piston rod assembly, the piston rod assembly comprising a piston member, the piston member being located in the working chamber to separate the working chamber into a first working chamber and a second working chamber, the second working chamber being closer to the bottom valve than the first working chamber in the axial direction, the first working chamber fluid being connected to the first chamber, and the second working chamber fluid being connected to the second chamber, The bottom valve is constructed such that: When the hydraulic force applied to the bottom valve is directed toward the second working chamber, the bottom valve allows oil to flow from the second chamber into the second working chamber to push the piston rod assembly upward; when the hydraulic force applied to the bottom valve is directed away from the second working chamber, the bottom valve allows oil to flow from the second working chamber into the second chamber to drive the piston rod assembly downward. The vibration absorber further comprises: a first damping valve assembly connected to an outer side of the housing, the first damping valve assembly being connected in series between the first chamber and the first working chamber; and A second damping valve assembly is connected to the outer side of the housing, and the second damping valve assembly is connected in series between the second chamber and the second working chamber.

2. The shock absorber according to claim 1, characterized in that The vibration absorber further comprises: A hydraulic pump assembly is located outside the housing, the hydraulic pump assembly is fluidically connected to the first oil hole and the second oil hole, and the hydraulic pump assembly is used to pump oil to the first oil hole or the second oil hole, and to extract oil from the first oil hole or the second oil hole.

3. The shock absorber according to claim 2, characterized in that The vibration absorber further comprises: A recovery accumulator is connected in series between the hydraulic pump assembly and the first chamber, and is used to store oil.

4. The shock absorber according to claim 3, characterized in that The recovery accumulator is connected in series between the first oil hole and the hydraulic pump assembly.

5. The shock absorber according to claim 2, characterized in that The vibration absorber further comprises: A compression accumulator is connected in series between the hydraulic pump assembly and the second chamber, and is used to store oil.

6. The shock absorber according to claim 5, characterized in that The compression accumulator is located outside the housing and is connected in series between the second oil hole and the hydraulic pump assembly.

7. The shock absorber according to claim 1, characterized in that The bottom valve comprises: A bottom valve body, wherein the bottom valve body is provided with a compression hole and a compensation hole; a compression valve portion, the compression valve portion being movably disposed to cover the compression hole, the compression valve portion being configured to open the compression hole when the resultant hydraulic force applied thereto moves away from the second working chamber in the axial direction, thereby allowing oil to flow from the second working chamber into the second chamber; and The compensation valve portion is movably covered on the compensation hole, and the compensation valve portion is configured to open the compensation hole when the hydraulic force received is directed along the axial direction toward the second working chamber to allow oil to flow from the second chamber into the second working chamber.

8. The shock absorber according to claim 7, characterized in that The shock absorber includes a transition joint, the transition joint is at least partially located in the second chamber, the transition joint is provided with a first through hole extending in an axial direction, and the first through hole is fluidically connected to the second working chamber, and a hole depth direction of the first through hole intersects the axial direction; The second damping valve assembly includes an oil inlet hole and an oil outlet hole, wherein the oil inlet hole is fluidically connected to the first through hole. The transition joint is connected to the second damping valve assembly, or the transition joint and the second damping valve assembly are constructed as one body.

9. The shock absorber according to claim 1, characterized in that The piston component comprises: a piston body portion having a second through hole; and A circulation valve portion is movably covered on the second through hole, and is configured to open the second through hole when the hydraulic force received is directed along the axial direction toward the first working chamber to allow oil to flow from the second working chamber into the first working chamber.

10. The vibration absorber according to claim 1, wherein The vibration absorber further comprises: a guide sleeve assembly connected to the working cylinder and located on a side of the piston member away from the bottom valve along the axial direction; The piston rod assembly also includes a rod member and a limiting member. The piston member is located between the guide sleeve assembly and the bottom valve in the axial direction. The rod member is movably arranged in the guide sleeve assembly along the axial direction. The limiting member is sleeved on the outside of the rod member. The limiting member is located between the piston member and the guide sleeve assembly in the axial direction, and the limiting member is spaced apart from the piston member in the axial direction. The radial outer dimension of the limiting member is smaller than the radial inner dimension of the working cylinder.

11. The shock absorber according to claim 1, characterized in that The first damping valve assembly and the second damping valve assembly each include a throttle valve, and at least one of the first damping valve assembly and the second damping valve assembly includes a one-way valve.

12. The shock absorber according to claim 1, characterized in that The partition assembly comprises: A separator ring is sleeved on the outside of the working cylinder, wherein the outer circumferential surface of the separator ring is provided with a first sealing groove arranged along the circumferential direction, and the inner circumferential surface of the separator ring is provided with a second sealing groove arranged along the circumferential direction; a first sealing ring connected to the first sealing groove to seal a gap between the separation ring and the housing; and A second sealing ring is connected to the second sealing groove to seal the gap between the separation ring and the working cylinder.

13. The vibration absorber according to any one of claims 1 to 12, characterized in that The vibration absorber further comprises: a first intermediate cylinder, the first intermediate cylinder being located in the first chamber and sleeved on the outside of the working cylinder, the first intermediate cylinder being connected to the partition assembly along the axial direction, the first intermediate cylinder dividing the first chamber into a recovery chamber and a first intermediate chamber arranged in the radial direction, the recovery chamber being located on the outside of the first intermediate chamber, the recovery chamber fluid being connected to the first oil hole and the first intermediate chamber, the first intermediate chamber fluid being connected to the first working chamber; and The second intermediate cylinder is located in the second chamber and is sleeved on the outside of the working cylinder. The second intermediate cylinder is connected to the partition assembly and the bottom valve along the axial direction. The second intermediate cylinder divides the second chamber into a compression chamber and a second intermediate chamber arranged radially. The compression chamber is located on the outside of the second intermediate chamber. The compression chamber fluid is connected to the second oil hole and the second intermediate chamber. The second intermediate chamber fluid is connected to the second working chamber.

14. The vibration absorber according to any one of claims 1 to 12, characterized in that The housing has a first end and a second end along the axial direction; The piston rod assembly further includes a rod member connected to the piston member and extending outside the first end of the housing in the axial direction; The shock absorber also includes a yoke connected to the second end of the housing.

15. A vehicle, characterized in that: The vehicle comprises: axles; body; and The shock absorber according to any one of claims 1 to 14, comprising an oil reservoir cylinder assembly and a piston rod assembly, one of the oil reservoir cylinder assembly and the piston rod assembly being connected to the axle, and the other of the oil reservoir cylinder assembly and the piston rod assembly being connected to the vehicle body.

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