Suspension mechanism and vehicle

Abstract

The utility model relates to the technical field of vehicle engineering, and provides a suspension mechanism and a vehicle. In the suspension mechanism, a fixing frame is used for being fixed to a vehicle frame; the steel plate spring is rotationally connected with the fixing frame through a first rotating shaft, and the axis of the first rotating shaft is parallel to the height direction of the frame. At least one group of wheel mounting racks are arranged, each group comprises two wheel mounting racks, the two wheel mounting racks in each group are respectively positioned on the left side and the right side of the first rotating shaft, the upper sides of the wheel mounting racks are spherically hinged with the steel plate spring, and the lower sides of the wheel mounting racks are spherically hinged with the frame; the adjusting assembly can drive the steel plate spring to rotate around the first rotating shaft or fix the steel plate spring relative to the fixing frame. Thus, the two wheel mounting frames are located on the two opposite sides of the first rotating shaft, the consistency of the backward inclination angles of the wheels on the left side and the right side can be adjusted at the same time by rotating the first rotating shaft, and the adjusting process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to a suspension mechanism and a vehicle. Background Art

[0002] As people's requirements for vehicle consistency and stability become higher and higher, how to improve the driving quality of vehicles has become an urgent problem to be solved by vehicle manufacturers.

[0003] Generally, when a vehicle is tested for four-wheel alignment, the caster angle of the wheels is compared, that is, whether the caster angles of the wheels on the left and right sides are consistent. The caster angle is the kingpin caster angle, which means the angle between the steering axis or the steering axis of the wheel and the vertical line in the longitudinal vertical plane from the side view of the vehicle. Its value is closely related to the steering and handling performance of the vehicle.

[0004] At present, there are some mechanical structures on the market that can adjust the caster angle of the transverse leaf spring suspension, but these mechanical structures generally have disadvantages such as complex structure, inconvenient operation, poor stability, etc. Among them, some mechanical structures require the removal of the transverse leaf spring, the adjustment process is cumbersome, and it is easy to be damaged; although other mechanical structures can easily adjust the caster angle, the adjustment range is limited and cannot meet the needs of different production and manufacturing situations.

[0005] Therefore, there is an urgent need for a suspension mechanism and a vehicle to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a suspension mechanism and a vehicle, which can synchronously adjust the caster angles of the wheels located on the left and right sides of the frame, and simplify the operation of adjusting the consistency of the caster angles.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The suspension mechanism is mounted on a vehicle frame, wherein the vehicle frame includes a connecting frame and a swing arm, wherein the swing arm and the connecting frame are relatively fixed in the front-rear direction of the vehicle frame, and comprises:

[0009] A fixing frame, the fixing frame is used to be fixed to the connecting frame;

[0010] A leaf spring, wherein the leaf spring is rotatably connected to the fixing frame via a first rotating shaft, and the axis of the first rotating shaft is parallel to the height direction of the frame;

[0011] A wheel mounting frame, wherein the wheel mounting frame is provided in at least one group, each group includes two wheel mounting frames, and the two wheel mounting frames in each group are respectively located on the left and right sides of the first rotating shaft, the upper side of the wheel mounting frame is hinged to the leaf spring ball, and the lower side of the wheel mounting frame is hinged to the swing arm ball;

[0012] An adjusting component, wherein the adjusting component can drive the leaf spring to rotate around the first rotating shaft or fix the leaf spring relative to the fixing frame.

[0013] As a preferred technical solution of the suspension mechanism, the adjustment assembly includes an actuator, which can abut against the leaf spring on at least one of the left and right sides of the first rotating shaft, and the abutting direction is parallel to the front-rear direction.

[0014] As a preferred technical solution for the above-mentioned suspension mechanism, the adjustment component includes a limit block, which is relatively fixed to the above-mentioned fixing frame and / or the above-mentioned connecting frame, and the end of the above-mentioned actuator that abuts against the above-mentioned leaf spring can move relative to the above-mentioned limit block along the above-mentioned front and rear directions.

[0015] As a preferred technical solution of the above-mentioned suspension mechanism, the above-mentioned actuator is a threaded fastener, including an adjusting bolt, and the above-mentioned adjusting bolt is movably inserted into the above-mentioned limit block along the above-mentioned front-rear direction.

[0016] As a preferred technical solution for the above-mentioned suspension mechanism, the above-mentioned threaded fastener also includes two nuts, the two nuts are threadedly connected to the same above-mentioned adjusting bolt, the two nuts are located on the front and rear sides of the above-mentioned limit block, the two nuts can approach or move away from each other along the axial direction of the above-mentioned adjusting bolt, and can abut against the end face of the above-mentioned limit block.

[0017] As a preferred technical solution of the suspension mechanism, two threaded fasteners are provided, which are respectively located on the left and right sides of the first rotating shaft and on the same side of the leaf spring in the front-rear direction.

[0018] As a preferred technical solution of the above-mentioned suspension mechanism, the above-mentioned adjustment component includes a motor, the above-mentioned actuator is a cam, the above-mentioned actuator is rotatably connected to the above-mentioned fixed frame through a second rotating shaft, the above-mentioned second rotating shaft is parallel to the above-mentioned first rotating shaft, and the above-mentioned motor can drive the above-mentioned actuator to rotate.

[0019] As a preferred technical solution for the suspension mechanism, the first rotating shaft is relatively fixed to the leaf spring and can rotate relative to the fixed frame. The adjusting assembly includes a motor, and the output end of the motor is transmission-connected to the first rotating shaft and can drive the first rotating shaft to rotate.

[0020] As a preferred technical solution of the above suspension mechanism, the above fixing frame and the above connecting frame are fixed by fastening bolts.

[0021] A vehicle is also provided, comprising the vehicle frame and the suspension mechanism, wherein the suspension mechanism is arranged on the vehicle frame.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a suspension mechanism and a vehicle. The vehicle includes a frame and a suspension mechanism, the frame includes a connecting frame and a swing arm, the swing arm and the connecting frame are relatively fixed in the front-rear direction of the frame, and the suspension mechanism includes a fixing frame, a leaf spring, a wheel mounting frame and an adjustment component. Among them, the fixing frame is used to be fixed to the connecting frame; the leaf spring and the fixing frame are rotatably connected through a first rotating shaft, and the axis of the first rotating shaft is parallel to the height direction of the frame; the wheel mounting frame is provided with at least one group, each group includes two wheel mounting frames, and the two wheel mounting frames in each group are respectively located on the left and right sides of the first rotating shaft, the upper side of the wheel mounting frame is hinged with the leaf spring ball and the lower side of the wheel mounting frame is hinged with the swing arm ball; the adjustment component can drive the leaf spring to rotate around the first rotating shaft or fix the leaf spring relative to the fixing frame.

[0024] In this way, when it is necessary to adjust the caster angles of the wheels on the left and right sides of the frame to be consistent, the leaf spring is driven by the adjustment component to rotate a certain angle around the first rotating shaft, and the head and tail ends of the leaf spring rotate in the same direction clockwise or counterclockwise. Since the first rotating shaft is located in the middle of the leaf spring, the head and tail ends of the leaf spring respectively swing in opposite directions toward the front and rear directions of the frame. At the same time, the end of the leaf spring pushes the upper side of the wheel mounting frame to swing toward the front or rear of the frame. The upper side of the wheel mounting frame and the leaf spring rotate relative to each other through a ball joint, and swing in the front and rear directions with the hinge point of the wheel mounting frame and the swing arm as the center of the circle, while the swing arm always remains stationary relative to the connecting frame in the front and rear directions, and the lower side of the wheel mounting frame rotates relative to the swing arm through a ball joint. Since the swing directions of the wheel mounting frames on the left and right sides are opposite, the caster angles of the wheels on the left and right sides can be adjusted to be consistent by rotating the leaf spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the assembly of the suspension mechanism and the swing arm provided in the embodiment of the utility model;

[0027] Figure 2 It is an exploded schematic diagram of the suspension mechanism and the connecting frame provided by the embodiment of the utility model;

[0028] Figure 3 The utility model embodiment provides a suspension mechanism and a connecting frame assembly schematic diagram Figure 1 ;

[0029] Figure 4 The utility model embodiment provides a suspension mechanism and a connecting frame assembly schematic diagram Figure 2 ;

[0030] Figure 5 It is a partial top view of the suspension mechanism provided by the embodiment of the utility model.

[0031] In the figure:

[0032] X, height direction; Y, left and right direction; Z, front and back direction;

[0033] 110. Fixed frame;

[0034] 120. Leaf spring;

[0035] 130, first rotating shaft;

[0036] 140. Wheel mounting frame;

[0037] 151, limit block; 152, adjusting bolt; 153, nut; 154, fastening bolt;

[0038] 210. Connecting frame; 220. Swing arm. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] The utility model provides a vehicle, including a frame and a suspension mechanism, wherein the suspension mechanism is arranged on the frame. The frame includes a connecting frame 210 and a swing arm 220, wherein the swing arm 220 and the connecting frame 210 are relatively fixed in the front-rear direction Z of the frame, and the suspension mechanism extends along the left-right direction Y of the frame, and is used to connect the wheels on the left and right sides of the frame. The consistency of the caster angles of the two wheels on the left and right sides of the frame can be adjusted.

[0044] Specifically, Figures 1 to 5 As shown, the suspension mechanism includes a fixing frame 110, a leaf spring 120, a wheel mounting frame 140 and an adjustment assembly. The fixing frame 110 is used to be fixed to the connecting frame 210; the leaf spring 120 is rotatably connected to the fixing frame 110 through the first rotating shaft 130, and the axis of the first rotating shaft 130 is parallel to the height direction X of the frame; the wheel mounting frame 140 is provided with at least one group, each group includes two wheel mounting frames 140, and the two wheel mounting frames 140 in each group are respectively located on the left and right sides of the first rotating shaft 130, the upper side of the wheel mounting frame 140 is ball-jointed with the leaf spring 120, and the lower side of the wheel mounting frame 140 is ball-jointed with the swing arm 220; the adjustment assembly can drive the leaf spring 120 to rotate around the first rotating shaft 130 or fix the leaf spring 120 relative to the fixing frame 110.

[0045] In this way, when the caster angles of the wheels on the left and right sides of the frame need to be adjusted to be consistent, the leaf spring 120 is driven to rotate around the first rotating shaft 130 by a certain angle through the adjusting component, and the head and tail ends of the leaf spring 120 rotate in the same direction clockwise or counterclockwise. Since the first rotating shaft 130 is located in the middle of the leaf spring 120, the head and tail ends of the leaf spring 120 swing in opposite directions in the front and rear directions Z of the frame respectively. At the same time, the end of the leaf spring 120 pushes the upper side of the wheel mounting frame 140 to swing toward the front or rear of the frame together. The upper side of the wheel mounting frame 140 and the leaf spring 120 rotate relative to each other through the ball joint, and swing in the front-rear direction Z with the hinge point of the wheel mounting frame 140 and the swing arm 220 as the center of the circle, while the swing arm 220 always remains stationary relative to the connecting frame 210 in the front-rear direction Z, and the lower side of the wheel mounting frame 140 rotates relative to the swing arm 220 through the ball joint. Since the swing directions of the wheel mounting frames 140 on the left and right sides are opposite, the caster angles of the wheels on the left and right sides can be adjusted to be consistent by rotating the leaf spring 120.

[0046] Furthermore, in the side view angle of the frame, assuming that in the standard state, the angle between the steering axis of the left and right wheels and the vertical direction is α. If it is found that in practice, the angle between the steering axis of the wheel on the left side of the frame and the vertical direction is β, which satisfies β=α+A, and the angle between the steering axis of the wheel on the right side of the frame and the vertical direction is γ, which satisfies γ=α-A, A>0, then the leaf spring 120 is driven to rotate A° through the adjustment component, so that β=α=γ, so that the caster angles of the wheels on the left and right sides of the frame are consistent.

[0047] Preferably, in the height direction X of the vehicle frame, the leaf spring 120 is sandwiched between the connecting frame 210 and the fixing frame 110. Since the leaf spring 120 is connected to the wheel mounting frame 140 for mounting the wheel at both ends, the load of the leaf spring 120 is relatively large. By installing it between the connecting frame 210 and the fixing frame 110, the lower part of the leaf spring 120 can be supported by the fixing frame 110, and the first rotating shaft 130 is only used as a rotation axis to avoid the first rotating shaft 130 from deforming due to the need to overcome the weight of the leaf spring 120 and the wheel mounting frame 140. In addition, since the leaf spring 120 needs to adapt to the road conditions and undergo elastic deformation during the driving of the vehicle, the upper side of the leaf spring 120 is limited by the connecting frame 210, which can also reduce the force of the first rotating shaft 130 for connecting the fixing frame 110 and the leaf spring 120 along the height direction X.

[0048] Optionally, the adjustment assembly includes an actuator, which can abut against the leaf spring 120 on at least one of the left and right sides of the first rotating shaft 130, and the abutting direction is parallel to the front-to-back direction Z. In this way, the actuator applies a force to the leaf spring 120 on one side of the first rotating shaft 130, and the force application direction is parallel to the front-to-back direction Z, and the actuator can be used to drive the leaf spring 120 to rotate around the first rotating shaft 130.

[0049] Preferably, the abutment direction between the actuator and the leaf spring 120 is perpendicular to the axis of the first rotating shaft 130 .

[0050] Optionally, the adjustment component includes a limit block 151, which is relatively fixed to the fixing frame 110 and / or the connecting frame 210, and the end of the actuator abutting against the leaf spring 120 can move along the front-rear direction Z relative to the limit block 151.

[0051] Furthermore, the limiting block 151 can be integrally formed with one of the fixing frame 110 and the connecting frame 210 .

[0052] Optionally, the actuator is a threaded fastener, including an adjusting bolt 152 , and the adjusting bolt 152 is movably inserted into the limit block 151 along the front-rear direction Z.

[0053] Optionally, the threaded fastener also includes two nuts 153, which are threadedly connected to the same adjusting bolt 152. The two nuts 153 are located on the front and rear sides of the limit block 151. The two nuts 153 can approach or move away from each other along the axial direction of the adjusting bolt 152, and can abut against the end face of the limit block 151.

[0054] Specifically, when the threaded fastener needs to move along the front-to-back direction Z, at least one nut 153 is first screwed so that the two nuts 153 move away from each other, leaving space for the adjusting bolt 152 to move, so that the adjusting bolt 152 can move along the front-to-back direction Z relative to the limit block 151, and drive the leaf spring 120 to move. After debugging is completed, the relative position of the adjusting bolt 152 and the limit block 151 is maintained, and the nut 153 is screwed again so that the two nuts 153 are close to each other and clamped at both ends of the limit block 151 to lock the relative position of the adjusting bolt 152 and the limit block 151, thereby limiting the relative position of the leaf spring 120 relative to the fixing frame 110.

[0055] Preferably, the limiting block 151 is provided with a threaded hole, and the adjusting bolt 152 is threadedly connected to the limiting block 151 through the threaded hole.

[0056] Optionally, two threaded fasteners are provided, which are respectively located on the left and right sides of the first rotating shaft 130 and on the same side of the leaf spring 120 in the front-rear direction Z.

[0057] Specifically, each time adjustment is required, one of the two threaded fasteners is an active member, that is, the threaded fastener as the active member is fed by screwing, and the other is a driven member, which rotates under the action of the leaf spring 120 to avoid the rotation of the leaf spring 120. When locking is required, both threaded fasteners are driven members and locked with the phase block 151 to limit the rotation of the leaf spring 120.

[0058] Furthermore, if only one adjusting bolt 152 is provided, the adjusting assembly also includes a sleeve, which is slidably mounted on the leaf spring 120. The sleeve can approach or move away from the first rotating shaft 130 along the length direction of the leaf spring 120. One end of the sleeve of the adjusting bolt 152 is rotatably connected, and the rotation axis is parallel to the axis of the first rotating shaft 130. In this way, the feeding of the adjusting bolt 152 along the front-to-back direction Z can realize the bidirectional rotation of the leaf spring 120 through the sleeve.

[0059] In other embodiments, the adjustment component includes a motor, the actuator is a cam, the actuator is rotatably connected to the fixing frame 110 via a second rotating shaft, the second rotating shaft is parallel to the first rotating shaft 130, and the motor can drive the actuator to rotate.

[0060] Specifically, the cam is located on one side of the leaf spring 120 in the front-to-back direction Z, and the circumferential side wall of the cam can abut against the leaf spring 120. During the rotation of the cam, the edge of the cam is at different distances from its axis, so it can apply a force in the front-to-back direction Z to the leaf spring 120.

[0061] Furthermore, it is assumed that the adjustment assembly includes only one cam, and the periphery of the cam includes two abutment portions, and the two abutment portions abut against the leaf spring 120 at the left and right sides of the first rotating shaft 130 respectively.

[0062] Further, it is assumed that the adjustment assembly includes two cams, the two cams are respectively located on the front and rear sides of the leaf spring 120 and are both located on the same side of the left-right direction Y of the first rotating shaft 130, or the two cams are both located on the same side of the front-back direction Z of the leaf spring 120 and are respectively located on the left and right sides of the first rotating shaft 130. When adjusting, when one of the cams is a driving wheel for driving the leaf spring 120 to rotate, the other is a driven wheel that rotates under the action of the leaf spring 120. When locking is required, both cams remain relatively stationary with the fixing frame 110.

[0063] In this way, the two cams, one of which is active and the other is driven, can drive the leaf spring 120 to rotate clockwise or counterclockwise, and the two cams stop rotating at the same time, so as to clamp the leaf spring 120 and maintain the adjusted position.

[0064] In other embodiments, the actuator includes an abutment rod and a threaded rod, wherein the abutment rod is slidably inserted into the fixing frame 110 along the front-to-back direction Z, the threaded rod is threadedly connected to the fixing frame 110 along the up-down direction, and one end of the abutment rod can abut against the leaf spring 120 on one side of the left-right direction Y of the first rotating shaft 130, and the other end of the abutment rod is transmitted to the threaded rod through an inclined wedge structure, that is, the other end of the abutment rod is provided with an inclined surface, and one end of the threaded rod is provided with an inclined surface corresponding thereto, and the two inclined surfaces are parallel and can slide relative to each other. When the threaded rod is screwed, the threaded rod moves relative to the fixing frame 110 along the height direction X of the frame, and the abutment rod can be driven to move along the front-to-back direction Z of the frame through the inclined wedge structure.

[0065] In this way, the front-rear direction Z of the frame cannot provide enough adjustment space for the actuator to satisfy its movement or telescopic action along the front-rear direction Z.

[0066] In other embodiments, the first rotating shaft 130 is relatively fixed to the leaf spring 120 and can rotate relative to the fixing frame 110. The adjusting component includes a motor, and the output end of the motor is transmission-connected to the first rotating shaft 130 to drive the first rotating shaft 130 to rotate.

[0067] Specifically, a spline structure is provided on one end of the first rotating shaft 130, and a corresponding spline groove is provided in the middle of the leaf spring 120. The spline of the first rotating shaft 130 is plugged into the spline groove of the leaf spring 120 along the height direction X of the frame, so that the first rotating shaft 130 and the leaf spring 120 are relatively fixed. When the first rotating shaft 130 rotates around its own axis, the leaf spring 120 can rotate synchronously. The fixed frame 110 is provided with a light hole, and the axis of the light hole is parallel to the height direction X of the frame. The first rotating shaft 130 is inserted into the light hole and is rotatably connected with the fixed frame 110. The motor is relatively fixed to the fixed frame 110, and the motor drives the first rotating shaft to rotate around the axis, and the first rotating shaft 130 drives the leaf spring 120 to rotate relative to the fixed frame 110.

[0068] It should be noted that the motor can realize bidirectional rotation, clockwise or counterclockwise.

[0069] Preferably, the first rotating shaft 130 and the fixing frame 110 are connected via a bearing, so that the friction between the first rotating shaft 130 and the fixing frame 110 is reduced, thereby reducing the work loss of the adjustment component for overcoming this part of the friction.

[0070] Optionally, the fixing frame 110 and the connecting frame 210 are fixed by fastening bolts 154 .

[0071] Specifically, the fastening bolt 154 penetrates the connecting frame 210 and the fixing frame 110 along the height direction X of the frame. For ease of description, it is assumed that the nut of the fastening bolt 154 abuts against the side of the fixing frame 110 facing away from the connecting frame 210, and the fastening bolt 154 is threadedly connected to the connecting frame 210, or the fastening bolt 154 penetrates the connecting frame 210 and is threadedly fixed to the corresponding nut.

[0072] Furthermore, a plurality of fastening bolts 154 are provided, and the plurality of fastening bolts 154 are evenly arranged on both sides of the front and rear of the leaf spring 120. The plurality of fastening bolts 154 can distribute the weight of the suspension mechanism and maintain the reliability and stability of the suspension mechanism and the connecting frame 210. The fastening bolts 154 are spaced apart from the leaf spring 120 to reserve a rotation space for the leaf spring 120 to avoid interference.

[0073] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A suspension mechanism, mounted on a vehicle frame, the vehicle frame comprising a connecting frame (210) and a swing arm (220), the swing arm (220) and the connecting frame (210) being relatively fixed in a front-rear direction (Z) of the vehicle frame, It is characterized in that The suspension mechanism comprises: A fixing frame (110), the fixing frame (110) being used to be fixed to the connecting frame (210); A leaf spring (120), wherein the leaf spring (120) is rotatably connected to the fixing frame (110) via a first rotating shaft (130), and the axis of the first rotating shaft (130) is parallel to the height direction (X) of the frame; A wheel mounting frame (140), wherein at least one group of the wheel mounting frames (140) is provided, each group comprising two wheel mounting frames (140), the two wheel mounting frames (140) in each group are respectively located on the left and right sides of the first rotating shaft (130), the upper side of the wheel mounting frame (140) is ball-jointed to the leaf spring (120), and the lower side of the wheel mounting frame (140) is ball-jointed to the swing arm (220); An adjustment component, wherein the adjustment component can drive the leaf spring (120) to rotate around the first rotating shaft (130) or fix the leaf spring (120) relative to the fixing frame (110).

2. The suspension mechanism according to claim 1, It is characterized in that The adjustment component comprises an actuator, which can abut against the leaf spring (120) on at least one of the left and right sides of the first rotating shaft (130), and the abutting direction is parallel to the front-rear direction (Z).

3. The suspension mechanism according to claim 2, It is characterized in that The adjustment component comprises a limit block (151), wherein the limit block (151) is relatively fixed to the fixing frame (110) and / or the connecting frame (210), and the end of the actuator that is in contact with the leaf spring (120) can move relative to the limit block (151) along the front-rear direction (Z).

4. The suspension mechanism according to claim 3, It is characterized in that The actuator is a threaded fastener, comprising an adjusting bolt (152), wherein the adjusting bolt (152) is movably inserted into the limiting block (151) along the front-rear direction (Z).

5. The suspension mechanism according to claim 4, It is characterized in that The threaded fastener further comprises two nuts (153), the two nuts (153) being threadedly connected to the same adjusting bolt (152), the two nuts (153) being located at the front and rear sides of the limiting block (151), the two nuts (153) being able to approach or move away from each other along the axial direction of the adjusting bolt (152), and being able to abut against the end surface of the limiting block (151).

6. The suspension mechanism according to claim 4, It is characterized in that Two threaded fasteners are provided, which are respectively located on the left and right sides of the first rotating shaft (130), and are located on the same side of the leaf spring (120) in the front-rear direction (Z).

7. The suspension mechanism according to claim 2, It is characterized in that The adjustment component comprises a motor, the actuator is a cam, the actuator is rotationally connected to the fixing frame (110) via a second rotating shaft, the second rotating shaft is parallel to the first rotating shaft (130), and the motor can drive the actuator to rotate.

8. The suspension mechanism according to claim 1, It is characterized in that The first rotating shaft (130) is relatively fixed to the leaf spring (120) and can rotate relative to the fixing frame (110); the adjusting component comprises a motor, and the output end of the motor is transmission-connected to the first rotating shaft (130) and can drive the first rotating shaft (130) to rotate.

9. The suspension mechanism according to any one of claims 1 to 8, It is characterized in that The fixing frame (110) and the connecting frame (210) are fixed by fastening bolts (154).

10. Vehicles, It is characterized in that It comprises the frame according to any one of claims 1 to 9 and the suspension mechanism, wherein the suspension mechanism is arranged on the frame.

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