Automobile suspension spring device and automobile suspension system

Abstract

The invention relates to the technical field of automobile suspension, and provides an automobile suspension spring device and an automobile suspension system.The automobile suspension spring device comprises a first buffer part, at least one second buffer part, a suspension sealing cover, at least one first limiting set and a second limiting set, and the first buffer part is connected to an automobile body; the second buffer piece is arranged at the other end of the first buffer piece; the suspension sealing cover is movably arranged on the second buffer piece; the first limiting sets used for limiting the second buffering pieces to move in the telescopic direction of the second buffering pieces are arranged on the second buffering pieces in a one-to-one correspondence mode. The second limiting set used for limiting the suspension sealing cover from moving towards the first buffering piece is arranged on the suspension sealing cover. The first limiting set and the second limiting set are used for limiting stretching and retracting of at least one buffering piece and enabling other buffering pieces to stretch and retract. According to the automobile suspension spring device, stretching and retracting of part of the buffering pieces can be limited so that stress can be released, performance can be recovered, and the service life of the automobile suspension spring device can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of automobile suspension, and in particular to an automobile suspension spring device and an automobile suspension system. Background Art

[0002] Automobile suspension is a device used to transmit the force and torque acting between the wheels and the body of the vehicle. It also plays the role of buffering road impact and maintaining the contact between the wheels and the ground to ensure the driving stability and comfort of the vehicle.

[0003] The automobile suspension spring device in the related art uses a spring for buffering. In a working environment of continuous and frequent expansion and contraction, the stress on the spring will accumulate rapidly, causing the spring material to fatigue and be damaged, thereby causing the buffering performance of the spring to decrease or fail. Summary of the invention

[0004] The embodiments of the present application provide an automobile suspension spring device and an automobile suspension system, which can improve the technical problem in the related art that an automobile suspension spring that needs to be continuously and frequently extended and retracted for buffering will quickly accumulate stress, resulting in a decrease in the buffering performance of the spring.

[0005] In a first aspect, an embodiment of the present application provides a vehicle suspension spring device, comprising:

[0006] a first buffer, one end of which is connected to the vehicle body;

[0007] At least one second buffer, the second buffer being movably disposed at the other end of the first buffer along its own expansion and contraction direction;

[0008] a hanging cover, the hanging cover being movably disposed on the second buffer member farthest from the first buffer member;

[0009] At least one first limit group, the first limit groups are arranged on the second buffer members in a one-to-one correspondence; the number of the first limit groups is equal to the number of the second buffer members; the first limit groups are used to limit the movement of the second buffer members along their own expansion and contraction direction;

[0010] A second limiting group, the second limiting group is arranged on the hanging cover; the second limiting group is used to limit the hanging cover from moving toward the first buffer member;

[0011] The first limiting group and the second limiting group are used to limit the movement of the hanging cover and enable at least one of the second buffer members to move, or to enable the hanging cover to move and limit the movement of at least one of the second buffer members.

[0012] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0013] The automobile suspension spring device provided in the embodiment of the present application is achieved by sequentially arranging at least one second buffer member end to end at one end of the first buffer member, arranging a suspension cover on the second buffer member farthest from the first buffer member, arranging a first limit group on each second buffer member, and arranging a second limit group on the suspension cover. By controlling the first limit group and the second limit group, the first buffer member or at least one second buffer member can be extended and retracted, and at least one second buffer member or the first buffer member cannot be extended and retracted. Through the first limit group and the second limit group, the buffer members of the first buffer member and at least one second buffer member can be extended and retracted to maintain the buffering function of the automobile suspension spring device, and the buffer member that is restricted and cannot be extended and retracted can eliminate the accumulated stress and restore the performance, which can reduce the fatigue damage of the spring, extend the service life of the spring, improve safety, and reduce the frequency of spring replacement and maintenance costs.

[0014] In some embodiments, the first buffer member comprises:

[0015] A suspension base, one end of which is connected to the vehicle body;

[0016] At least one first guide rod, one end of the first guide rod is disposed at one end of the suspension base; the other end of the first guide rod is in sliding contact with the second buffer member;

[0017] A first elastic member, one end of which is disposed on one end of the suspension base; and the other end of the first elastic member is in contact with the second buffer member.

[0018] In some embodiments, the number of the second buffer member is one, and the second buffer member includes:

[0019] A movable member, wherein the movable member is movably disposed at the other end of the first guide rod; one end of the movable member abuts against the other end of the first elastic member;

[0020] at least one second guide rod, the second guide rod being arranged at the other end of the movable member; the axis of any second guide rod is not colinear with the axis of any first guide rod, and the projections of any second guide rod and any first guide rod in the direction of the axis of the second guide rod do not overlap;

[0021] A second elastic member, one end of which is arranged at an end of the movable member away from the suspension base; and the other end of the second elastic member is in contact with the suspension cover.

[0022] In some embodiments, the number of the second buffer members is multiple, and the multiple second buffer members include:

[0023] The first and second buffer components include:

[0024] A first movable member, the first movable member is movably disposed at the other end of the first guide rod; one end of the first movable member abuts against the other end of the first elastic member;

[0025] At least one first second guide rod, the first second guide rod being arranged at the other end of the first movable member; the axis of any of the first second guide rods is not colinear with the axis of any of the first guide rods, and the projections of any of the first second guide rods and any of the first guide rods in the direction of the axis of the second guide rod do not overlap;

[0026] A first second elastic member; one end of the first second elastic member is arranged at an end of the first movable member away from the suspension base;

[0027] At least one secondary second buffer, the secondary second buffer comprising:

[0028] A secondary movable member, the secondary movable member is movably disposed at one end of the first second guide rod, or is movably and spaced apart from the secondary movable member adjacent to the secondary movable member and close to the first buffer member;

[0029] At least one secondary second guide rod, one end of the secondary second guide rod is disposed at the first end of the secondary movable member, and the other end of the secondary second guide rod is in sliding contact with the second end adjacent to the secondary second guide rod and away from the first buffer member;

[0030] A secondary second elastic member; one end of the secondary second elastic member is disposed at the first end of the secondary movable member; the other end of the secondary second elastic member abuts against the second end adjacent to the secondary second elastic member and away from the first buffer member;

[0031] Among them, the first end of the secondary movable part is the end of the secondary movable part away from the first buffer part; the second end of the secondary movable part is the end of the secondary movable part close to the first buffer part; the axis of any of the secondary second guide rods is not collinear with the axis of any of the first guide rods, the axis of any of the secondary second guide rods is not collinear with the axis of any of the first second guide rods, and the axes of any two of the secondary second guide rods are not collinear; the axis of any of the secondary second guide rods does not overlap with the projection of any of the first guide rods in the direction of the axis of the secondary second guide rod; the axis of any of the secondary second guide rods does not overlap with the projection of any of the first second guide rods in the direction of the axis of the secondary second guide rod, and the projections of any two of the secondary second guide rods in the direction of the axis of the secondary second guide rod do not overlap.

[0032] In some embodiments, the number of the second buffer is one, the number of the first limit group is one, the first limit group is arranged on the second buffer, and the first limit group includes:

[0033] at least one limiting member, wherein the limiting member is movably disposed on the movable member along a direction perpendicular to the axis of the first guide rod; the number of the limiting members is equal to the number of the first guide rods;

[0034] At least one driving member, the driving member is arranged on the movable member; the number of the driving members is equal to the number of the limiting members; the power output ends of the driving members are connected to the limiting members one by one; the driving member is used to drive the limiting members to move to abut against the first guide rod to limit the movable member from moving along the axial direction of the first guide rod.

[0035] In some embodiments, the number of the second buffer members is plural, the number of the first limit groups is plural, and the number of the first limit groups is equal to the number of the first buffer members; the plurality of the first limit groups comprises:

[0036] The first limiting group includes:

[0037] At least one first position limiting member, wherein the first position limiting member is movably disposed on the first movable member along a direction perpendicular to the axis of the first guide rod; the number of the first position limiting members is equal to the number of the first guide rods;

[0038] At least one first driving member, the first driving member is arranged on the first movable member; the number of the first driving members is equal to the number of the first limiting members; the power output ends of the first driving members are connected to the first limiting members one by one; the first driving member is used to drive the first limiting members to move to abut against the first guide rod, so as to limit the first movable member from moving along the axis direction of the first guide rod;

[0039] At least one secondary first limiting group, the secondary first limiting group comprising:

[0040] at least one secondary stopper, the secondary stopper being movably disposed on the secondary movable member in a direction perpendicular to the axis of the second guide rod; the number of the secondary stoppers is equal to the number of the second guide rods of the second buffer member;

[0041] At least one secondary driving member, which is arranged on the secondary movable member; the number of the secondary driving members is equal to the number of the secondary limiting members; the power output ends of the secondary driving members are connected to the secondary limiting members one by one; the secondary driving member is used to drive the secondary limiting members to move to abut against the second guide rod to limit the movement of the secondary movable member along the axial direction of the second guide rod.

[0042] In some embodiments, the number of the first limit group is one, and the limit member includes:

[0043] a first moving part, the first moving part being movably disposed on the movable member in a direction perpendicular to the axis of the first guide rod; the first moving part being connected to a power output end of the driving member;

[0044] A first abutment portion, wherein the first abutment portion is arranged at one end of the first movable portion toward the first guide rod; the first abutment portion is in an opening shape, and the opening of the first abutment portion faces the first guide rod; the first abutment portion is used to abut against the first guide rod to limit the movable part from moving along the axial direction of the first guide rod.

[0045] In some embodiments, the number of the first limit groups is multiple, and the first limit member includes:

[0046] A first moving part, the first moving part is movably arranged on the first movable part along a direction perpendicular to the axis of the first guide rod; the first moving part is connected to the power output end of the first driving part;

[0047] A first abutment portion, the first abutment portion is arranged at one end of the first movable portion facing the first guide rod; the first abutment portion is open, and the opening direction of the first abutment portion faces the first guide rod; the first abutment portion is used to abut against the first guide rod to limit the first movable member from moving along the axis direction of the first guide rod;

[0048] The secondary position limiting member comprises:

[0049] A secondary moving part, the secondary moving part is movably arranged on the secondary movable member along a direction perpendicular to the axis of the second guide rod; the secondary moving part is connected to the power output end of the secondary driving member;

[0050] A secondary abutment portion, wherein the secondary abutment portion is arranged at one end of the secondary movable portion toward the second guide rod; the secondary abutment portion is open, and the opening direction of the secondary abutment portion is toward the second guide rod; the secondary abutment portion is used to abut against the second guide rod to limit the secondary movable part from moving along the axial direction of the second guide rod.

[0051] In some embodiments, the second limit group includes:

[0052] At least one second stopper, the second stopper being movably disposed on the suspension cover along a direction perpendicular to the axis of the second guide rod; the number of the second stoppers is equal to the number of the second guide rods on the second buffer;

[0053] At least one second driving member, the second driving member is arranged on the hanging cover, the number of the second driving members is equal to the second limiting member; the power output end of the second driving member is connected to the second limiting member one by one; the second driving member is used to drive the second limiting member to move to abut against the second guide rod to limit the movement of the hanging cover along the axial direction of the second guide rod.

[0054] In some embodiments, the second stopper comprises:

[0055] a second movable part, the second movable part being movably disposed on the suspension cover in a direction perpendicular to the axis of the second guide rod; the second movable part being connected to a power output end of the second driving member;

[0056] A second abutment portion, wherein the second abutment portion is arranged at one end of the second movement toward the second guide rod; the second abutment portion is open, and the opening direction of the second abutment portion is toward the second guide rod; the second abutment portion is used to abut against the second guide rod to limit the movement of the hanging cover along the axial direction of the second guide rod.

[0057] In some embodiments, the number of the second buffer member is one, and the hanging cover comprises:

[0058] A cover body, one end of which is movably disposed on the second guide rod along the axial direction of the second guide rod; one end of the cover body abuts against one end of the second elastic member away from the suspension base;

[0059] At least one first through hole, wherein the first through hole is opened in the cover body; the number of the first through holes is equal to the number of the first guide rods; the first through holes can be in sliding contact with the first guide rods one by one; the first through holes are used to enable the first elastic member and the second elastic member to be compressed simultaneously.

[0060] In some embodiments, the number of the second buffer members is plural, and the hanging cover comprises:

[0061] A cover body, one end of which is movably disposed on the second guide rod along the axial direction of the second guide rod; one end of the cover body abuts against one end of the second elastic member away from the suspension base;

[0062] At least one second through hole, wherein the second through hole is opened in the cover body; the number of the second through holes is equal to the number of the second guide rods; the second through holes can be in sliding contact with the second guide rods separated by one second buffer member one by one; the second through holes are used to make the second guide rods separated by one second buffer member from the hanging cover in sliding contact, so that the second buffer member adjacent to the hanging cover and the second buffer member separated by one second buffer member from the hanging cover can be compressed at the same time.

[0063] In some embodiments, the automobile suspension spring device further comprises:

[0064] A plurality of fatigue detection devices, wherein the plurality of fatigue detection devices are disposed on the first buffer or the second buffer in a one-to-one correspondence; the fatigue detection devices are used to detect the fatigue degree of the first buffer or the second buffer;

[0065] A limit control device, wherein the limit control device is arranged on the suspension base; the limit control device is electrically connected to the plurality of fatigue detection devices respectively; the limit control device is electrically connected to the first limit group and the second limit group respectively; the limit control device is used to control the first limit group located at the side of the fatigue detection device away from the suspension base and closest to the fatigue detection device to restrict the movement of the first buffer member or the second buffer member according to the fatigue degree of the first buffer member or the second buffer member detected by the fatigue detection device, or control the second limit group located at the side of the fatigue detection device away from the suspension base and closest to the fatigue detection device to restrict the movement of the suspension cover, and release the restriction of the second limit group or at least one of the first limit groups.

[0066] In some embodiments, the automobile suspension spring device also includes a pressure sensing device, which is arranged on the suspension cover; the pressure sensing device is electrically connected to the second limit group and the first limit group on the second buffer member adjacent to the suspension cover, respectively; the pressure sensing device is used to enable the second limit group to release the movement restriction on the suspension cover when it detects that the pressure exceeds a predetermined value, and enable the first limit group on the second buffer member adjacent to the suspension cover to release the movement restriction on the second buffer member, so that the suspension cover and the second buffer member adjacent to the suspension cover can move toward the first buffer member at the same time.

[0067] In a second aspect, an embodiment of the present application provides a vehicle suspension system, comprising a plurality of vehicle suspension spring devices as described in the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0069] Figure 1 A schematic structural diagram of a vehicle suspension spring device (the number of second buffer members is one) provided in an embodiment of the present application;

[0070] Figure 2 A schematic diagram of the structure of a vehicle suspension spring device (a plurality of second buffer members) provided in an embodiment of the present application;

[0071] Figure 3 A front view of a first buffer member provided in an embodiment of the present application;

[0072] Figure 4 A front view of a second buffer member provided in an embodiment of the present application;

[0073] Figure 5 A schematic diagram of the structure of the limiter provided in an embodiment of the present application.

[0074] Among them, the reference numerals in the figure are:

[0075] 100, automobile suspension spring device; 10, first buffer; 101, suspension base; 102, first guide rod; 103, first elastic member; 20, second buffer; 201, movable member; 202, second guide rod; 203, second elastic member; 204, first second buffer; 2041, first movable member; 2042, first second guide rod; 2043, first second elastic member; 205, second second buffer; 2051, Secondary movable member; 2052, secondary second guide rod; 2053, secondary second elastic member; 30, hanging cover; 301, cover body; 302, first through hole; 303, second through hole; 40, first limiting group; 401, limiting member; 4011, first moving part; 4012, first abutting part; 41, first limiting group in the first position; 42, first limiting group in the secondary position; 421, secondary limiting member; 50, second limiting group; 501, second limiting member. DETAILED DESCRIPTION

[0076] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0078] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0079] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0081] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0082] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0083] Automobile suspension is a device used to transmit the force and torque acting between the wheels and the body of the vehicle. It also plays the role of buffering road impact and maintaining the contact between the wheels and the ground to ensure the driving stability and comfort of the vehicle.

[0084] The automobile suspension spring device in the related art uses a spring for buffering. In a working environment of continuous and frequent expansion and contraction, the stress on the spring will accumulate rapidly, causing the spring material to fatigue and be damaged, thereby causing the buffering performance of the spring to decrease or fail.

[0085] Based on this, in order to improve the problem in the related art that an automobile suspension spring in a working environment that requires continuous and frequent extension and retraction will quickly accumulate stress and cause the spring's buffering performance to deteriorate, the embodiment of the present application provides the following solution.

[0086] Please also read Figure 1 and Figure 2 The embodiment of the present application provides a vehicle suspension spring device 100, which includes a first buffer 10, at least one second buffer 20, a suspension cover, at least one first limit group 40 and a second limit group 50, one end of the first buffer 10 is connected to the vehicle body; the second buffer 20 is movably arranged on the other end of the first buffer 10 in sequence along its own expansion and contraction direction; the suspension cover is movably arranged on the second buffer 20 farthest from the first buffer 10; the first limit group 40 is arranged on the second buffer 20 one by one; the number of the first limit groups 40 is equal to the number of the second buffer 20; the first limit group 40 is used to limit the movement of the second buffer 20 along its own expansion and contraction direction; the second limit group 50 is arranged on the suspension cover; the second limit group 50 is used to limit the movement of the suspension cover toward the first buffer 10; wherein the first limit group 40 and the second limit group 50 are used to limit the movement of the suspension cover and enable the at least one second buffer 20 to move, or to enable the suspension cover to move and limit the movement of the at least one second buffer 20.

[0087] It can be understood that the first buffer 10 is a component that can be compressed and stretched to achieve a buffering function, for example, it can include an air spring, and it can also include a coil spring, but it is not limited to this. A threaded countersunk hole can be provided on the first buffer 10, and the vehicle body and the first buffer 10 can be connected by a bolt that can cooperate with the thread on the countersunk hole, or the first buffer 10 can be welded to the vehicle body, but it is not limited to this. The second buffer 20 is a component with the same function as the first buffer 10. A guide rod can be provided on the first buffer 10, and a through hole can be provided on the second buffer 20, so that the second buffer 20 can move along the guide rod through the through hole, or a sleeve can be provided on the first buffer 10, and the outer wall of the second buffer 20 can be slidably contacted with the inner wall of the sleeve, so that the second buffer 20 can move on the first buffer 10. The suspension cover can be connected to the second buffer 20 in the same connection method as the first buffer 10 and the second buffer 20. The first limit group 40 is a component used to limit the compression of the first buffer 10 or the second buffer 20. It can use a movable abutment block to abut the connection between the second buffer 20 and the first buffer 10 or the second buffer 20 and the second buffer 20 to generate friction, thereby limiting the compression of the first buffer 10 or the second buffer 20, or use a clamp to clamp the connection between the second buffer 20 and the first buffer 10 or the second buffer 20 and the second buffer 20, thereby limiting the compression of the first buffer 10 or the second buffer 20. The second limit group 50 can use the same structure as the first limit group 40 to limit the movement of the suspension cover, thereby compressing the second buffer 20.

[0088] As can be seen from the above, the automobile suspension spring device 100 provided in the embodiment of the present application is configured by sequentially arranging at least one second buffer 20 end to end at one end of the first buffer 10, arranging a suspension cover on the second buffer 20 farthest from the first buffer 10, arranging a first limit group 40 on each second buffer 20, and arranging a second limit group 50 on the suspension cover. By controlling the first limit group 40 and the second limit group 50, the first buffer 10 or at least one second buffer 20 can be extended and retracted, and at least one second buffer 20 or the first buffer 10 cannot be extended and retracted. Through the first limit group 40 and the second limit group 50, the buffers of the first buffer 10 and at least one second buffer 20 can be extended and retracted to maintain the buffering function of the automobile suspension spring device 100, and the buffers that are restricted and cannot be extended and retracted can eliminate the accumulated stress and restore the performance, which can reduce the fatigue damage of the spring, extend the service life of the spring, improve the safety, and reduce the frequency of spring replacement and maintenance costs.

[0089] Optionally, the load that the first buffer member 10 can bear is greater than the load applied by the vehicle body during driving. The load that any second buffer member 20 can bear is greater than the load applied by the vehicle body during driving.

[0090] It can be understood that the load generated by the vehicle body during normal driving will not compress the first buffer component 10 or any second buffer component 20 to the point where they cannot be shortened.

[0091] With such arrangement, the first buffer component 10 or any second buffer component 20 can buffer the vehicle body independently. By alternately buffering the vehicle body by the first buffer component 10 and at least one second buffer component 20, it is possible to effectively avoid excessive accumulation of stress on the first buffer component 10 or the second buffer component 20. The first buffer component 10 or the second buffer component 20 can eliminate the accumulated stress and restore performance when not in operation, thereby reducing fatigue damage of the spring, extending the service life of the spring, improving safety, and reducing the frequency of spring replacement and maintenance costs.

[0092] In some embodiments, see Figure 1 and Figure 4 The first buffer 10 includes a suspension base 101, at least one first guide rod 102 and a first elastic member 103, one end of the suspension base 101 is connected to the vehicle body; one end of the first guide rod 102 is arranged at one end of the suspension base 101; the other end of the first guide rod 102 slides in contact with the second buffer 20; one end of the first elastic member 103 is arranged at one end of the suspension base 101; the other end of the first elastic member 103 abuts against the second buffer 20.

[0093] It can be understood that the suspension base 101 is a component used to connect the vehicle body and carry other devices, which can be a circular plate or a square, but not limited to this. The first guide rod 102 is a component used to guide the contraction direction of the first elastic member 103 and to connect the second buffer member 20. One end of the first guide rod 102 can be provided with a thread, and a threaded hole is opened at one end of the suspension base 101, and the first guide rod 102 is set at one end of the suspension base 101 through the matching of the thread; or one end of the first guide rod 102 can be welded to one end of the suspension base 101, but not limited to this. A through hole can be opened on the second buffer member 20, or an opening can be set to slide with the first guide rod 102. The first elastic member 103 is a component that buffers the external force received through a retractable structure. The first elastic member 103 can be a rubber spring or a coil spring made of spring steel, but not limited to this. One end of the first elastic member 103 can be welded to one end of the suspension base 101, or it can be riveted to one end of the suspension base 101, but not limited to this.

[0094] In this way, by arranging the first guide rod 102 and the first elastic member 103 on the suspension base 101, the first guide rod 102 is in sliding contact with the second buffer member 20, and one end of the first elastic member 103 abuts against one end of the second buffer member 20. The second buffer member 20 is subjected to force to compress the first elastic member 103 along the axial direction of the first guide rod 102, thereby buffering the load. The first guide rod 102 can prevent the first elastic member 103 from deviating, maintain the normal operation of the suspension system, improve the vehicle's handling and stability, increase the service life of the automobile suspension spring device 100, reduce the wear of suspension components, and reduce long-term maintenance costs.

[0095] Optionally, in some embodiments, see Figure 1 , Figure 4 and Figure 5 The number of the second buffer member 20 is one, and the second buffer member 20 includes a movable member 201, at least one second guide rod 202 and a second elastic member 203. The movable member 201 is movably arranged at the other end of the first guide rod 102; one end of the movable member 201 abuts against the other end of the first elastic member 103; the second guide rod 202 is arranged at the other end of the movable member 201; the axis of any second guide rod 202 is not colinear with the axis of any first guide rod 102, and the projections of any second guide rod 202 and any first guide rod 102 in the direction of the axis of the second guide rod 202 do not overlap; one end of the second elastic member 203 is arranged at the end of the movable member 201 away from the suspension base 101; the other end of the second elastic member 203 abuts against the suspension cover.

[0096] It can be understood that the movable member 201 is a component used to move toward the suspension base 101 to compress the first elastic member 103 when bearing a load. The movable member 201 can be a plate with a through hole, or a block with a through hole, but is not limited thereto. The second guide rod 202 can adopt the same structure as the first guide rod 102 and be arranged at the other end of the movable member 201 by welding or riveting, but is not limited thereto. The second elastic member 203 can adopt the same structure and the same connection method as the first elastic member 103 and be arranged at the other end of the movable member 201.

[0097] Optionally, see Figure 2 , Figure 4 and Figure 5The number of the second buffer members 20 is multiple, and the multiple second buffer members 20 include a first second buffer member 204 and at least one second second buffer member 205. The first second buffer member 204 includes a first movable member 2041, at least one first second guide rod 2042 and a first second elastic member 2043. The first movable member 2041 is movably arranged at the other end of the first guide rod 102; one end of the first movable member 2041 abuts against the other end of the first elastic member 103; the first second guide rod 2042 is arranged at the other end of the first movable member 2041; the axis of any first second guide rod 2042 is not colinear with the axis of any first guide rod 102 , the projection of any first second guide rod 2042 and any first guide rod 102 in the axial direction of the second guide rod 202 does not overlap; one end of the first second elastic member 2043 is arranged at the end of the first movable member 2041 away from the suspension base 101; the second second buffer member 205 includes a second movable member 2051, at least one second second guide rod 2052 and a second second elastic member 2053, the second movable member 2051 is movably arranged at one end of the first second guide rod 2042, or is movably and spaced apart from the second movable member 2051 adjacent to itself and close to the first buffer member 10; one end of the second second guide rod 2052 The second guide rod 2052 is arranged at the first end of the secondary movable member 2051, and the other end thereof slides in contact with the second end thereof adjacent to itself and away from the first buffer member 10; one end of the secondary second elastic member 2053 is arranged at the first end of the secondary movable member 2051; the other end thereof abuts against the second end thereof adjacent to itself and away from the first buffer member 10; wherein the first end of the secondary movable member 2051 is the end thereof away from the first buffer member 10; the second end of the secondary movable member 2051 is the end thereof close to the first buffer member 10; the axis of any secondary guide rod 2052 is The axes of any first guide rod 102 are not collinear, the axes of any first-position second guide rod 2052 are not collinear with the axes of any first-position second guide rod 2042, and the axes of any two second-position second guide rods 2052 are not collinear; the axis of any first-position second guide rod 2052 and the projection of any first guide rod 102 in the direction of the axis of the second-position second guide rod 2052 do not coincide; the axis of any first-position second guide rod 2052 and the projection of any first-position second guide rod 2042 in the direction of the axis of the second-position second guide rod 2052 do not coincide, and the projections of any two second-position second guide rods 2052 in the direction of the axis of the second-position second guide rod 2052 do not coincide.

[0098] It can be understood that the first second buffer 204 is arranged at one end of the first buffer 10, and the plurality of second buffers 205 are arranged end to end at the end of the first second buffer 204 away from the first buffer 10. The first movable member 2041 is a component movably arranged at the other end of the first guide rod 102. The first movable member 2041 is used to compress the first elastic member 103 when bearing a load. The first movable member 2041 can be a plate or block with a through hole, but is not limited to this. The first movable member 2041 can be in sliding contact with the first guide rod 102 by opening a through hole, or the edge of the first movable member 2041 abuts against the first guide rod 102 to move on the first guide rod 102, but is not limited to this. The first second guide rod 2042 can be one or more, and the first second guide rod 2042 can be a round rod or a square rod, but is not limited to this. The first second elastic member 2043 can be an air spring or a coil spring made of spring steel, but is not limited to this. The secondary second buffer 205 can adopt the same structure and matching method as the primary first buffer 10. The axis of any secondary second guide rod 2052 is not collinear with the axis of any first guide rod 102, and the axis of any secondary second guide rod 2052 does not overlap with the projection of any first guide rod 102 in the direction of the axis of the secondary second guide rod 2052, so that the first buffer 10 is not interfered by the secondary second buffer 205 when compressed. The axis of any secondary second guide rod 2052 is not collinear with the axis of any primary second guide rod 2042, and the axis of any secondary second guide rod 2052 does not overlap with the projection of any primary second guide rod 2042 in the direction of the axis of the secondary second guide rod 2052, so that the primary second buffer 204 is not interfered by the adjacent secondary second buffer 205 when compressed. The axes of any two secondary second guide rods 2052 are not collinear, and the projections of any two secondary second guide rods 2052 in the axis direction of the secondary second guide rods 2052 do not overlap, so that any two adjacent secondary second buffers 205 do not interfere with each other during compression.

[0099] In this way, the movable part 201 is movably set on the other end of the first guide rod 102, the second guide rod 202 and the second elastic part 203 are set at the other end of the movable part 201, and the hanging cover is movably set on the second guide rod 202 and abuts against the second elastic part 203; or the first movable part 2041 is movably set on the other end of the first second guide rod 2042, the first second guide rod 2042 and the first second elastic part 2043 are set at the other end of the first movable part 2041, and then the second movable part 2051, the second second guide rod 2052 and the second second elastic part 2053 are set at the other end of the first second guide rod 2042, and the hanging cover is set at the other end of the second second guide rod 2052. When the suspension cover is subjected to a load, the second elastic member 203 can be compressed, and the second guide rod 202 can prevent the second elastic member 203 from deflecting, thereby maintaining the normal operation of the suspension system, improving the handling and stability of the vehicle, increasing the service life of the automobile suspension spring device 100, reducing the wear of the suspension components, and reducing long-term maintenance costs.

[0100] In some embodiments, see Figure 1 and Figure 3 , the number of the second buffer 20 is one, the number of the first limit group 40 is one, the first limit group 40 is arranged on the second buffer 20, the first limit group 40 includes at least one limit member 401 and at least one driving member, the limit member 401 is movably arranged on the movable member 201 along the direction perpendicular to the axis of the first guide rod 102; the number of the limit members 401 is equal to the number of the first guide rods 102; the driving member is arranged on the movable member 201; the number of the driving member is equal to the number of the limit members 401; the power output end of the driving member is connected to the limit member 401 one by one; the driving member is used to drive the limit member 401 to move to abut against the first guide rod 102, so as to limit the movable member 201 from moving along the axis direction of the first guide rod 102.

[0101] It can be understood that the first limiter group 40 is used to limit the movement of the second buffer 20 along the axis direction of the first guide rod 102, and the number of the first limiter groups 40 is equal to the number of the second buffer 20. The limiter 401 is a component used to abut the first guide rod 102 to limit the movement of the movable member 201. The limiter 401 can be a block that can move toward the first guide rod 102 to abut the first guide rod 102, and limit the movement of the movable member 201 by friction, or can control the opening and closing of the robot to clamp the first guide rod 102, thereby limiting the movement of the movable member 201 by friction, but is not limited to this. The limiter 401 corresponds to the first guide rod 102 one by one to improve the braking effect of the limiter 401 on the movable member 201. The driving member is a member used to drive the limit member 401 to move toward the first guide rod 102 in a one-to-one correspondence. The driving member can be a motor, with a gear set at the output end of the motor, and a rack matched with the gear set on the limit member 401. The gear is driven by the rotation of the motor to move, and the gear drives the rack to move, thereby moving the limit member 401; or a cylinder can be used, one end of the piston rod of the cylinder is connected to the limit member 401, and the gas is input into the cylinder by controlling the gas to drive the limit member 401 to move to abut the first guide rod 102, but it is not limited to this.

[0102] Optionally, in some embodiments, see Figure 2 and Figure 3 , the number of the second buffer members 20 is multiple, the number of the first limit groups 40 is multiple, and the number of the first limit groups 40 is equal to the number of the first buffer members 10; the multiple first limit groups 40 include a first first limit group 41 and at least one second first limit group 42, the first first limit group 41 includes at least one first limit member and at least one first driving member, the first limit member is movably arranged on the first movable member 2041 along the direction perpendicular to the axis of the first guide rod 102; the number of the first limit members is equal to the number of the first guide rod 102; the first driving member is arranged on the first movable member 2041; the number of the first driving member is equal to the number of the first limit members; the power output end of the first driving member is connected to the first limit member one by one; the first driving member is used to drive the first limit member to move to abut against the first guide rod 102 to limit the movement of the first movable member 2041 along the axis direction of the first guide rod 102;

[0103] The secondary first limit group 42 includes at least one secondary limit member 421 and at least one secondary driving member. The secondary limit member 421 is movably arranged on the secondary movable member 2051 along a direction perpendicular to the axis of the second guide rod 202; the number of secondary limit members 421 is equal to the number of second guide rods 202 of the second buffer member 20; the secondary driving member is arranged on the secondary movable member 2051; the number of secondary driving members is equal to the number of secondary limit members 421; the power output end of the secondary driving member is connected to the secondary limit member 421 one by one; the secondary driving member is used to drive the secondary limit member 421 to move to abut against the second guide rod 202 to limit the movement of the secondary movable member 2051 along the axis direction of the second guide rod 202.

[0104] It can be understood that the first limiter group 40 is a component for limiting the movement of the second buffer 20, and corresponds to the second buffer 20 one by one. The first limiter group 41 is used to limit the movement of the first second buffer 204 adjacent to the first buffer 10, and the second first limiter group 42 is used to limit the movement of the second second buffer 205 arranged at the end of the first limiter group 41 away from the first buffer 10. The first limiter and the second limiter 421 can adopt the same structure as the limiter in the above embodiment, and the first driver and the second driver can adopt the same structure as the driver in the above embodiment.

[0105] In this way, the limiting member 401 is driven by the driving member to move to abut against the first guide rod 102 to limit the movement of the second buffer member 20; or the first limiting member is driven by the first driving member to move to abut against the first guide rod 102 to limit the movement of the first second buffer member 204; the second limiting member 421 is driven by the second driving member to move to abut against the second guide rod 202 to limit the movement of the second second buffer member 205, and the first limiting group 41 and the second limiting group 42 are controlled to make the first buffer member 10 and the second buffer member 205 move to each other. 0 is in a compressible or incompressible state. The compressible first buffer member 10 or the second buffer member 20 is used to bear the load, and the incompressible first buffer member 10 or the second buffer member 20 can relieve stress accumulation, eliminate material fatigue to restore performance, and improve the reliability and stability of the automobile suspension spring device 100, avoid the elastic member from being in a high stress state for a long time, reduce fatigue damage, thereby extending the service life of the automobile suspension spring device 100, reducing the maintenance frequency of the automobile suspension spring device 100, and reducing maintenance costs and working time.

[0106] Optionally, see Figure 1 and Figure 3The number of the first limiting group 40 is one, the limiting member 401 includes a first moving portion 4011 and a first abutting portion 4012, the first moving portion 4011 is movably arranged on the movable member 201 along a direction perpendicular to the axis of the first guide rod 102; the first moving portion 4011 is connected to the power output end of the driving member; the first abutting portion 4012 is arranged at one end of the first moving portion 4011 facing the first guide rod 102; the first abutting portion 4012 is open, and the opening of the first abutting portion 4012 faces the first guide rod 102; the first abutting portion 4012 is used to abut against the first guide rod 102 to limit the movable member 201 from moving along the axis direction of the first guide rod 102.

[0107] It can be understood that when the number of the first limiting group 40 is one, the first limiting group 40 is used to limit the movement of the second buffer member 20 on the first guide rod 102 . The first movable part 4011 is a component used to move on the movable part 201 in a direction perpendicular to the axis of the first guide rod 102 under the drive of the driving part. For example, when the driving part is a motor with a gear provided at the output end, the movable part 201 can be provided with a groove along the direction perpendicular to the axis of the first guide rod 102, and the first movable part 4011 can be a block with a rack matched with the gear on one side. The first movable part 4011 is set in the groove, and the block with the rack is driven to move in the groove through the rotation of the motor and the gear; or when the driving part is a cylinder, the piston rod of the cylinder is set in a direction perpendicular to the axis of the first guide rod 102, and the first movable part 4011 can be a rod body set at one end of the cylinder piston rod facing the first guide rod 102, and the piston is driven to move by inputting gas into the cylinder, thereby pushing the movable part to move toward the first guide rod 102, but the present invention is not limited to this. The first abutment portion 4012 is a component for abutting the first guide rod 102 and increasing the contact area with the first guide rod 102 , and may be an opening provided on the first movable portion 4011 , or a fork-shaped component provided at one end of the first movable portion 4011 , but is not limited thereto.

[0108] In this way, the power output end of the driving member is connected to the first movable part 4011 of the limiting member 401, and then the first abutting part 4012 is moved to abut against the first guide rod 102. The contact area with the first abutting part 4012 is increased, and the friction between the limiting member 401 and the first guide rod 102 can be increased, and the wear of the first abutting part 4012 is reduced, the service life of the first abutting part 4012 is extended, and the demand for the driving force of the first movable part 4011 is reduced, so that the first limiting group 40 has a better braking effect on the second buffer member 20, thereby improving the stability and safety of the automobile suspension spring device 100.

[0109] In some embodiments, see Figure 2 and Figure 3The number of the first limiting groups 40 is multiple, and the first limiting member includes a first moving part and a first abutting part, the first moving part is movably arranged on the first movable member 2041 along the direction perpendicular to the axis of the first guide rod 102; the first moving part is connected to the power output end of the first driving member; the first abutting part is arranged at one end of the first moving part facing the first guide rod 102; the first abutting part is open, and the opening direction of the first abutting part faces the first guide rod 102; the first abutting part is used to abut against the first guide rod 102 to limit the first movable member 2041 from moving along the axis direction of the first guide rod 102;

[0110] The secondary limiting member 421 includes a secondary moving portion and a secondary abutting portion, wherein the secondary moving portion is movably arranged on the secondary movable member 2051 along a direction perpendicular to the axis of the second guide rod 202; the secondary moving portion is connected to the power output end of the secondary driving member; the secondary abutting portion is arranged at one end of the secondary moving portion facing the second guide rod 202; the secondary abutting portion is open, and the opening direction of the secondary abutting portion is toward the second guide rod 202; the secondary abutting portion is used to abut against the second guide rod 202 to limit the movement of the secondary movable member 2051 along the axis direction of the second guide rod 202.

[0111] It can be understood that there are multiple second buffers 20, and the first limiter group 40 corresponds to the second buffers 20 one by one. The first limiter is arranged on the first second buffer 204, and is used to limit the movement of the first second buffer 204 along the axis direction of the first guide rod 102. The second limiter 421 is arranged on the second second buffer 205, and is used to limit the movement of the second second buffer 205 along the axis direction of the second guide rod 202. The first moving part and the second moving part can adopt the same structure as the first moving part 4011 in the above embodiment, and the first abutting part and the second abutting part can adopt the same structure as the first abutting part 4012 in the above embodiment.

[0112] In this way, the first driving member drives the first moving part to move, and the first abutting part is moved to abut against the first guide rod 102, thereby braking the first second buffer 204; the second driving member drives the second moving part to move, and the second abutting part is moved to abut against the second guide rod 202, thereby braking the second second buffer 205. In this way, each first movable part 2041 and the second movable part 2051 can be braked respectively, so that the first buffer 10 and the second buffer 20 can be respectively extended or fixed, so that the buffers of the first buffer 10 and at least one second buffer 20 can be extended to maintain the buffering function of the automobile suspension spring device 100, and the buffers that are restricted and cannot be extended can eliminate the accumulated stress and restore the performance, which can reduce the fatigue damage of the spring, extend the service life of the spring, improve the safety, and can reduce the frequency of spring replacement and reduce maintenance costs.

[0113] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The second limit group 50 includes at least one second limit member 501 and at least one second driving member. The second limit member 501 is movably arranged on the hanging cover along a direction perpendicular to the axis of the second guide rod 202; the number of the second limit members 501 is equal to the number of the second guide rods 202 on the second buffer 20; the second driving member is arranged on the hanging cover, and the number of the second driving members is equal to the second limit member 501; the power output end of the second driving member is connected to the second limit member 501 one by one; the second driving member is used to drive the second limit member 501 to move to abut against the second guide rod 202 to limit the movement of the hanging cover along the axis direction of the second guide rod 202.

[0114] It can be understood that the second stopper 501 is a component used to limit the movement of the hanging cover, and the second stopper 501 is driven by the second driving member to abut against the second guide rod 202, so that the hanging cover is fixed on the second guide rod 202. The second stopper 501 can adopt the same structure as the first stopper in the above embodiment, and the second driving member can adopt the same structure as the first driving member in the above embodiment.

[0115] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The second limiting member 501 includes a second movable portion and a second abutting portion, and the second movable portion is movably arranged on the hanging cover along a direction perpendicular to the axis of the second guide rod 202; the second movable portion is connected to the power output end of the second driving member; the second abutting portion is arranged at one end of the second movable portion toward the second guide rod 202; the second abutting portion is open, and the opening direction of the second abutting portion is toward the second guide rod 202; the second abutting portion is used to abut against the second guide rod 202 to limit the movement of the hanging cover along the axial direction of the second guide rod 202.

[0116] It can be understood that the second moving part is a part connected to the power output end of the second driving member, and is used to transmit the power output by the second driving member. The second abutting part is a part connected to one end of the second moving part, and is used to abut against the second guide rod 202. The second moving part can adopt the same structure as the first moving part 4011 in the above embodiment, and the second abutting part can adopt the same structure as the first abutting part 4012 in the above embodiment.

[0117] In this configuration, the second driving member drives the second moving member, thereby moving the second abutting portion to abut against the second guide rod 202, so that the suspension cover is fixed on the second guide rod 202. In this way, the second elastic member 203 abutting against the suspension cover can be compressed and stretched alternately with other second elastic members 203 or the first elastic member 103, so as to avoid the second elastic member 203 being in a high stress state for a long time, reduce fatigue damage, thereby extending the service life of the second elastic member 203, reduce the frequency of replacing the second elastic member 203, reduce the time and cost of maintenance, improve the reliability and stability of the automobile suspension spring device 100, and extend the service life of the automobile suspension spring device 100.

[0118] In some embodiments, see Figure 1 and Figure 2 , the number of the second buffer member 20 is one, the hanging cover includes a cover body and at least one first through hole, one end of the cover body is movably arranged on the second guide rod 202 along the axial direction of the second guide rod 202; one end of the cover body abuts against the end of the second elastic member 203 away from the hanging base 101; the first through hole is opened in the cover body; the number of the first through holes is equal to the number of the first guide rods 102; the first through hole can be in sliding contact with the first guide rod 102 in a one-to-one correspondence; the first through hole is used to enable the first elastic member 103 and the second elastic member 203 to be compressed simultaneously.

[0119] It can be understood that when the number of the second buffer member 20 is one, the number of the first limit group 40 is one, and the automobile suspension spring device 100 only has the first elastic member 103 and the second elastic member 203. The first through hole is used to enable the suspension cover to slide in contact with the first guide rod 102, so that the suspension cover can continue to move toward the suspension base 101 after the first elastic member 103 is compressed, so that the second elastic member 203 and the first elastic member 103 can be compressed at the same time.

[0120] In some embodiments, see Figure 2 , the number of second buffer members 20 is multiple, the hanging cover includes a cover body and at least one second through hole, one end of the cover body is movably arranged on the second guide rod 202 along the axial direction of the second guide rod 202; one end of the cover body abuts against the end of the second elastic member 203 away from the hanging base 101; the second through hole is opened in the cover body; the number of second through holes is equal to the number of second guide rods 202; the second through holes can be in sliding contact with the second guide rods 202 spaced apart by one second buffer member 20 in a one-to-one correspondence; the second through hole is used to make the second guide rod 202 spaced apart from the hanging cover by one second buffer member 20 sliding contact, so that the second buffer member 20 adjacent to the hanging cover and the second buffer member 20 spaced apart from the hanging cover by one second buffer member 20 can be compressed at the same time.

[0121] It can be understood that when there are multiple second buffer members 20, multiple second buffer members 20 are spaced between the hanging cover and the first buffer member 10. The second through hole is used to allow the second guide rod 202 of the second buffer member 20 spaced from the hanging cover by one second buffer member 20 to penetrate and slide in contact, so that the second elastic member 203 abutting against the hanging cover can be compressed simultaneously with the first elastic member 103 or any second elastic member 203.

[0122] With such arrangement, the second elastic member 203 abutting against the suspension cover can be compressed simultaneously with the first elastic member 103 or any second elastic member 203 to bear and absorb the load, thereby increasing the upper load limit of the automobile suspension spring device 100, avoiding damage of a single elastic member due to excessive expansion and contraction, enhancing the stability of the automobile suspension spring device 100, enabling the automobile suspension spring device 100 to adapt to different working environments, extending the service life of the automobile suspension spring device 100, and reducing maintenance costs.

[0123] In some embodiments, the automobile suspension spring device 100 also includes multiple fatigue detection devices and limit control devices, and the multiple fatigue detection devices are arranged one by one on the first buffer 10 or the second buffer 20; the fatigue detection device is used to detect the fatigue degree of the first buffer 10 or the second buffer 20; the limit control device is arranged on the suspension base 101; the limit control device is electrically connected to the multiple fatigue detection devices respectively; the limit control device is electrically connected to the first limit group 40 and the second limit group 50 respectively; the limit control device is used to control the first limit group 40 located on the side of the fatigue detection device away from the suspension base 101 and closest to the fatigue detection device to restrict the movement of the first buffer 10 or the second buffer 20 according to the fatigue degree of the first buffer 10 or the second buffer 20 detected by the fatigue detection device, or control the second limit group 50 located on the side of the fatigue detection device away from the suspension base 101 and closest to the fatigue detection device to restrict the movement of the suspension cover, and release the restriction of the second limit group 50 or at least one first limit group 40.

[0124] It can be understood that the fatigue detection device is a device for detecting the fatigue degree of each first buffer 10 or second buffer 20. For example, an infrared sensor can be used to detect the position of the first elastic member 103 or the second elastic member 203 away from one end of the suspension base 101 through the infrared sensor, and the number of times the first elastic member 103 or the second elastic member 203 is compressed is judged according to the position of the first elastic member 103 or the second elastic member 203 away from one end of the suspension base 101. According to the number of compressions, the fatigue degree of the first buffer 10 or the second buffer 20 is judged; or a timer can be used to judge the fatigue degree of the first buffer 10 or the second buffer 20 according to the length of time the first limit member and the second limit member 501 fix the movable member 201 or the suspension cover, but it is not limited to this. The limit control device is a device for controlling the first limit group 40 or the second limit group 50 according to the fatigue degree of the first buffer 10 or the second buffer 20 detected by the fatigue monitoring device. The limit control device can be an MCU, a data processing chip, etc., but it is not limited to this. The limit control device can control the first limit group 40 or the second limit group 50 to restrict or allow movement of the first buffer 10 and the second buffer 20 according to the fatigue degree, for example, it can be compressed 100 times or work for 10 minutes, but is not limited thereto.

[0125] In this way, the fatigue degree of the first buffer component 10 or the second buffer component 20 is detected by the fatigue detection device, and the first limit component or the second limit component 501 is controlled by the limit control device to compress the first buffer component 10 or the second buffer component 20 respectively. In this way, the automobile suspension spring device 100 can automatically make the first buffer component 10 or the second buffer component 20 work alternately according to the fatigue degree of the first buffer component 10 or the second buffer component 20, effectively avoiding excessive accumulation of stress on the first buffer component 10 or the second buffer component 20. The first buffer component 10 or the second buffer component 20 can eliminate the accumulated stress and restore performance when not working, which can reduce fatigue damage, extend service life, improve safety, and can reduce the frequency of spring replacement and reduce maintenance costs.

[0126] In some embodiments, the automobile suspension spring device 100 also includes a pressure sensing device, which is arranged on the suspension cover; the pressure sensing device is electrically connected to the second limit group 50 and the first limit group 40 on the second buffer component 20 adjacent to the suspension cover respectively; the pressure sensing device is used to enable the second limit group 50 to release the movement restriction on the suspension cover when it detects that the pressure exceeds a predetermined value, and enables the first limit group 40 on the second buffer component 20 adjacent to the suspension cover to release the movement restriction on the second buffer component 20, so that the suspension cover and the second buffer component 20 adjacent to the suspension cover can move toward the first buffer component 10 at the same time.

[0127] It is understood that the pressure sensing device is a device for detecting the load size of the automobile suspension spring device 100, for example, a piezoresistive pressure sensor or a piezoelectric pressure sensor can be used, but it is not limited thereto. The preset value is the upper limit of the load of the first buffer 10 or the second buffer 20.

[0128] With such arrangement, when the pressure sensing device detects that the load on the automobile suspension spring device 100 exceeds a preset value, the second limit group 50 releases the restriction on the movement of the suspension cover, and the first limit group 40 on the second buffer member 20 adjacent to the suspension cover releases the restriction on the movement of the second buffer member 20, so that the suspension cover and the second buffer member 20 adjacent to the suspension cover can move toward the first buffer member 10 at the same time, thereby enabling at least two second buffer members 20 to buffer and support the load, thereby increasing the load upper limit of the automobile suspension spring device 100, avoiding damage to a single elastic member due to excessive expansion and contraction, enhancing the stability of the automobile suspension spring device 100, enabling the automobile suspension spring device 100 to adapt to different working environments, extending the service life of the automobile suspension spring device 100, and reducing maintenance costs.

[0129] The embodiment of the present application further provides a vehicle suspension system, which includes a plurality of vehicle suspension spring devices 100 as described in the above embodiment.

[0130] From the above, it can be seen that the automobile suspension system provided in the embodiment of the present application includes multiple automobile suspension spring devices 100. Among the first buffer component 10 and the second buffer component 20 of the automobile suspension spring device 100, at least one can be extended and retracted to maintain the buffering performance, and at least one cannot be extended and retracted to eliminate stress, thereby reducing fatigue damage, extending service life, improving safety, and being able to reduce the frequency of replacing the automobile suspension spring device 100 and reduce maintenance costs.

[0131] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automobile suspension spring device, characterized in that: include: a first buffer, one end of which is connected to the vehicle body; At least one second buffer, the second buffer being movably disposed at the other end of the first buffer along its own expansion and contraction direction; a hanging cover, the hanging cover being movably disposed on the second buffer member farthest from the first buffer member; At least one first limit group, the first limit groups are arranged on the second buffer members in a one-to-one correspondence; the number of the first limit groups is equal to the number of the second buffer members; the first limit groups are used to limit the movement of the second buffer members along their own expansion and contraction direction; A second limiting group, the second limiting group is arranged on the hanging cover; the second limiting group is used to limit the hanging cover from moving toward the first buffer member; The first limiting group and the second limiting group are used to limit the movement of the hanging cover and enable at least one of the second buffer members to move, or to enable the hanging cover to move and limit the movement of at least one of the second buffer members.

2. The automobile suspension spring device according to claim 1, characterized in that: The first buffer member comprises: A suspension base, one end of which is connected to the vehicle body; At least one first guide rod, one end of the first guide rod is disposed at one end of the suspension base; the other end of the first guide rod is in sliding contact with the second buffer member; A first elastic member, one end of which is disposed on one end of the suspension base; and the other end of the first elastic member is in contact with the second buffer member.

3. The automobile suspension spring device according to claim 2, characterized in that: The number of the second buffer member is one, and the second buffer member includes: A movable member, wherein the movable member is movably disposed at the other end of the first guide rod; one end of the movable member abuts against the other end of the first elastic member; at least one second guide rod, the second guide rod being arranged at the other end of the movable member; the axis of any second guide rod is not colinear with the axis of any first guide rod, and the projections of any second guide rod and any first guide rod in the direction of the axis of the second guide rod do not overlap; A second elastic member, one end of which is disposed at an end of the movable member away from the suspension base; the other end of the second elastic member abuts against the suspension cover; or The number of the second buffer members is multiple, and the multiple second buffer members include: The first and second buffer components include: A first movable member, the first movable member is movably disposed at the other end of the first guide rod; one end of the first movable member abuts against the other end of the first elastic member; At least one first second guide rod, the first second guide rod being arranged at the other end of the first movable member; the axis of any of the first second guide rods is not colinear with the axis of any of the first guide rods, and the projections of any of the first second guide rods and any of the first guide rods in the direction of the axis of the second guide rod do not overlap; The first second elastic member; one end of the first second elastic member is arranged at an end of the first movable member away from the suspension base; At least one secondary second buffer, the secondary second buffer comprising: A secondary movable member, the secondary movable member is movably disposed at one end of the first second guide rod, or is movably and spaced apart from the secondary movable member adjacent to the secondary movable member and close to the first buffer member; At least one secondary second guide rod, one end of the secondary second guide rod is disposed at the first end of the secondary movable member, and the other end of the secondary second guide rod is in sliding contact with the second end adjacent to the secondary second guide rod and away from the first buffer member; A secondary second elastic member; one end of the secondary second elastic member is disposed at the first end of the secondary movable member; the other end of the secondary second elastic member abuts against the second end adjacent to the secondary second elastic member and away from the first buffer member; Among them, the first end of the secondary movable part is the end of the secondary movable part away from the first buffer part; the second end of the secondary movable part is the end of the secondary movable part close to the first buffer part; the axis of any of the secondary second guide rods is not collinear with the axis of any of the first guide rods, the axis of any of the secondary second guide rods is not collinear with the axis of any of the first second guide rods, and the axes of any two of the secondary second guide rods are not collinear; the axis of any of the secondary second guide rods does not overlap with the projection of any of the first guide rods in the direction of the axis of the secondary second guide rod; the axis of any of the secondary second guide rods does not overlap with the projection of any of the first second guide rods in the direction of the axis of the secondary second guide rod, and the projections of any two of the secondary second guide rods in the direction of the axis of the secondary second guide rod do not overlap.

4. The automobile suspension spring device according to claim 3, characterized in that: The number of the second buffer is one, the number of the first limit group is one, the first limit group is arranged on the second buffer, and the first limit group includes: at least one limiting member, wherein the limiting member is movably disposed on the movable member along a direction perpendicular to the axis of the first guide rod; the number of the limiting members is equal to the number of the first guide rods; at least one driving member, the driving member is arranged on the movable member; the number of the driving members is equal to the number of the limiting members; the power output ends of the driving members are connected to the limiting members one by one; the driving member is used to drive the limiting members to move to abut against the first guide rod to limit the movable member from moving along the axis direction of the first guide rod; or The number of the second buffer members is multiple, the number of the first limit groups is multiple, and the number of the first limit groups is equal to the number of the first buffer members; the multiple first limit groups include: The first limiting group includes: At least one first position limiting member, wherein the first position limiting member is movably disposed on the first movable member along a direction perpendicular to the axis of the first guide rod; the number of the first position limiting members is equal to the number of the first guide rods; At least one first driving member, the first driving member is arranged on the first movable member; the number of the first driving members is equal to the number of the first limiting members; the power output ends of the first driving members are connected to the first limiting members one by one; the first driving member is used to drive the first limiting members to move to abut against the first guide rod, so as to limit the first movable member from moving along the axis direction of the first guide rod; At least one secondary first limiting group, the secondary first limiting group comprising: at least one secondary stopper, the secondary stopper being movably disposed on the secondary movable member in a direction perpendicular to the axis of the second guide rod; the number of the secondary stoppers is equal to the number of the second guide rods of the second buffer member; At least one secondary driving member, which is arranged on the secondary movable member; the number of the secondary driving members is equal to the number of the secondary limiting members; the power output ends of the secondary driving members are connected to the secondary limiting members one by one; the secondary driving member is used to drive the secondary limiting members to move to abut against the second guide rod to limit the movement of the secondary movable member along the axial direction of the second guide rod.

5. The automobile suspension spring device according to claim 4, characterized in that: The number of the first limit group is one, and the limit member includes: a first moving part, the first moving part being movably disposed on the movable member in a direction perpendicular to the axis of the first guide rod; the first moving part being connected to a power output end of the driving member; a first abutment portion, the first abutment portion being arranged at one end of the first movable portion facing the first guide rod; the first abutment portion being in an open shape, the opening of the first abutment portion facing the first guide rod; the first abutment portion being used to abut against the first guide rod to limit the movable member from moving along the axial direction of the first guide rod; or The number of the first limit groups is multiple, and the first limit member includes: A first moving part, the first moving part is movably arranged on the first movable part along a direction perpendicular to the axis of the first guide rod; the first moving part is connected to the power output end of the first driving part; A first abutment portion, the first abutment portion is arranged at one end of the first movable portion facing the first guide rod; the first abutment portion is open, and the opening direction of the first abutment portion faces the first guide rod; the first abutment portion is used to abut against the first guide rod to limit the first movable member from moving along the axis direction of the first guide rod; The secondary position limiting member comprises: A secondary moving part, the secondary moving part is movably arranged on the secondary movable member along a direction perpendicular to the axis of the second guide rod; the secondary moving part is connected to the power output end of the secondary driving member; A secondary abutment portion, wherein the secondary abutment portion is arranged at one end of the secondary movable portion toward the second guide rod; the secondary abutment portion is open, and the opening direction of the secondary abutment portion is toward the second guide rod; the secondary abutment portion is used to abut against the second guide rod to limit the secondary movable part from moving along the axial direction of the second guide rod.

6. The automobile suspension spring device according to claim 4, characterized in that: The second limit group includes: At least one second stopper, the second stopper being movably disposed on the suspension cover along a direction perpendicular to the axis of the second guide rod; the number of the second stoppers is equal to the number of the second guide rods on the second buffer; At least one second driving member, the second driving member is arranged on the hanging cover, the number of the second driving members is equal to the second limiting member; the power output end of the second driving member is connected to the second limiting member one by one; the second driving member is used to drive the second limiting member to move to abut against the second guide rod to limit the movement of the hanging cover along the axial direction of the second guide rod.

7. The automobile suspension spring device according to claim 6, characterized in that: The second limiting member comprises: a second movable part, the second movable part being movably disposed on the suspension cover in a direction perpendicular to the axis of the second guide rod; the second movable part being connected to a power output end of the second driving member; A second abutment portion, wherein the second abutment portion is arranged at one end of the second movement toward the second guide rod; the second abutment portion is open, and the opening direction of the second abutment portion is toward the second guide rod; the second abutment portion is used to abut against the second guide rod to limit the movement of the hanging cover along the axial direction of the second guide rod.

8. The automobile suspension spring device according to claim 3, characterized in that: The number of the second buffer member is one, and the hanging cover comprises: A cover body, one end of which is movably disposed on the second guide rod along the axial direction of the second guide rod; one end of the cover body abuts against one end of the second elastic member away from the suspension base; at least one first through hole, the first through hole being opened in the cover body; the number of the first through holes is equal to the number of the first guide rods; the first through holes can be in sliding contact with the first guide rods in a one-to-one correspondence; the first through holes are used to enable the first elastic member and the second elastic member to be compressed simultaneously; or The number of the second buffer members is plural, and the hanging cover comprises: A cover body, one end of which is movably disposed on the second guide rod along the axial direction of the second guide rod; one end of the cover body abuts against one end of the second elastic member away from the suspension base; At least one second through hole, wherein the second through hole is opened in the cover body; the number of the second through holes is equal to the number of the second guide rods; the second through holes can be in sliding contact with the second guide rods separated by one second buffer member one by one; the second through holes are used to make the second guide rods separated by one second buffer member from the hanging cover in sliding contact, so that the second buffer member adjacent to the hanging cover and the second buffer member separated by one second buffer member from the hanging cover can be compressed at the same time.

9. The automobile suspension spring device according to claim 2, characterized in that: The automobile suspension spring device also includes: A plurality of fatigue detection devices, wherein the plurality of fatigue detection devices are disposed on the first buffer or the second buffer in a one-to-one correspondence; the fatigue detection devices are used to detect the fatigue degree of the first buffer or the second buffer; A limit control device, wherein the limit control device is arranged on the suspension base; the limit control device is electrically connected to the plurality of fatigue detection devices respectively; the limit control device is electrically connected to the first limit group and the second limit group respectively; the limit control device is used to control the first limit group located at the side of the fatigue detection device away from the suspension base and closest to the fatigue detection device to restrict the movement of the first buffer member or the second buffer member according to the fatigue degree of the first buffer member or the second buffer member detected by the fatigue detection device, or control the second limit group located at the side of the fatigue detection device away from the suspension base and closest to the fatigue detection device to restrict the movement of the suspension cover, and release the restriction of the second limit group or at least one of the first limit groups; and / or The automobile suspension spring device also includes a pressure sensing device, which is arranged on the suspension cover; the pressure sensing device is electrically connected to the second limiting group and the first limiting group on the second buffer member adjacent to the suspension cover respectively; the pressure sensing device is used to make the second limiting group release the movement restriction on the suspension cover when detecting that the pressure exceeds a predetermined value, and make the first limiting group on the second buffer member adjacent to the suspension cover release the movement restriction on the second buffer member, so that the suspension cover and the second buffer member adjacent to the suspension cover can move toward the first buffer member at the same time.

10. An automobile suspension system, characterized in that: The vehicle suspension system comprises a plurality of vehicle suspension spring devices according to any one of claims 1 to 9.

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