CN220198992U - torsion beam structure - Google Patents

Abstract

The application relates to the technical field of vehicle parts, in particular to a torsion beam structure. The torsion beam structure comprises a bottom plate, an adjusting column and a fixing piece, wherein the bottom plate is provided with an adjusting hole, and the adjusting column penetrates through the adjusting hole and is used for being connected with a brake. The adjusting column is provided with an assembly hole, and the fixing piece penetrates through the assembly hole and is used for connecting the brake with the brake disc. The adjusting column can move in the adjusting hole along the axial direction of the fixing piece so as to drive the brake to move. The torsion beam structure provided by the application solves the problem that the existing torsion beam is difficult to adjust the toe-in and the camber of a vehicle.

Description

Torsion beam structure

Technical Field

The application relates to the technical field of vehicle parts, in particular to a torsion beam structure.

Background

The torsion beam suspension has the advantages of simple structure, low cost and easy manufacture and installation, is a suspension structure widely applied at present, and the wheels are connected with the vehicle body through the torsion beam suspension.

In order to ensure the stability and reliability of the vehicle during running, the wheels are provided with toe-in and camber angles. The toe-in angle refers to an included angle between the center plane of the wheel and the X axis of the whole vehicle in the projection view of the whole vehicle ground. The camber angle refers to the included angle between the central plane of the wheel and the Z axis of the whole vehicle in the longitudinal projection view of the whole vehicle. Toe-out and camber are important parameters of the performance of the whole vehicle, and if the toe-out and camber are disqualified, the control performance of the whole vehicle is reduced, for example, the problems of deviation, tire grinding, shaking and the like of the vehicle are caused.

In the existing torsion beam suspension structure, an inner mounting surface of a brake is attached to a mounting surface of a torsion beam, and an outer mounting surface of the brake is connected with a wheel, so that a center surface of the wheel is parallel to the mounting surface of the torsion beam. Thus, adjustment of the toe-in and camber of the vehicle can be achieved by changing the inclination angle of the torsion beam mounting surface. However, because the torsion beam suspension has a simple structure, if the angle of the installation surface of the torsion beam is required to be adjusted, gaps are easily generated between the torsion beam and the brake, so that the brake cannot be reliably fixed on the torsion beam, and the safety performance of the whole vehicle is affected. Therefore, the toe-in and camber of the present vehicle are mainly ensured depending on the processing accuracy of the torsion beam, thereby increasing the manufacturing cost of the torsion beam. And when the vehicle is subjected to larger impact and the toe-in and camber are changed, the problem can be solved only by replacing the new torsion beam, and the maintenance cost is increased.

Disclosure of Invention

Based on this, it is necessary to provide a torsion beam structure to solve the problem that it is difficult to adjust the toe-in and camber of the vehicle with the existing torsion beam.

The application provides a torsion beam structure, which comprises a bottom plate, an adjusting column and a fixing piece, wherein the bottom plate is provided with an adjusting hole, the adjusting column penetrates through the adjusting hole and is used for being connected with a brake, and the adjusting column is provided with an assembling hole; the fixing piece is arranged in the assembly hole in a penetrating mode and used for connecting the brake with the brake disc; the adjusting column can move in the adjusting hole along the axial direction of the fixing piece so as to drive the brake to move.

In one embodiment, the adjusting column is in threaded connection with the fixing piece, and the adjusting column can rotate relative to the fixing piece around the axis under the action of external force; and a limiting structure is arranged between the adjusting column and the adjusting hole and can prevent the adjusting column from rotating around the axis of the adjusting column, so that the adjusting column moves along the axial direction of the adjusting column.

So set up, the motion of adjusting the post is more stable.

In one embodiment, the limiting structure comprises a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove is arranged on the adjusting column, the other one of the limiting protrusion and the limiting groove is arranged on the hole wall of the adjusting hole, and the limiting protrusion is clamped in the limiting groove and can move in the limiting groove along the axial direction of the adjusting hole.

So set up, can avoid adjusting the post and take place to rotate.

In one embodiment, the torsion beam structure further comprises a driving piece, the driving piece is connected to the bottom plate, the driving piece is provided with a driving hole, the driving piece is sleeved on the adjusting column through the driving hole and is connected with the adjusting column, and the driving piece can drive the adjusting column to move along the axial direction of the adjusting column.

So set up, can realize automatic regulation, labour saving and time saving more.

In one embodiment, the driving member is further provided with an avoidance groove communicated with the driving hole, and the avoidance groove is arranged corresponding to the limiting protrusion.

So set up, can prevent that driving piece from interfering with spacing protruding emergence.

In one embodiment, the adjustment post includes a large end and a small end connected to the large end, the large end having a diameter greater than a diameter of the small end; the small end part penetrates through the adjusting hole and is connected with the driving piece, and one end of the large end part, which is away from the small end part, is used for being connected with a brake.

So set up, improve the connection stability of adjusting post and stopper.

In one embodiment, the inner wall of the adjusting hole is further provided with a stop step, and the stop step is stopped at one end of the large end part, which is close to the small end part.

By the arrangement, the interference between the large end part and the driving piece can be avoided.

In one embodiment, the bottom plate is further provided with connecting holes for connecting the wheel shafts, the number of the adjusting holes is multiple, and the adjusting holes are distributed at intervals around the axis of the connecting holes.

By the arrangement, the adjusting accuracy of the adjusting column to the brake can be improved.

In one embodiment, the torsion beam structure further comprises a torsion beam body and a mounting bracket, the bottom plate is fixedly arranged on the torsion beam body through the mounting bracket, and the mounting bracket is provided with an avoidance gap.

So set up, can improve the joint strength of bottom plate and torsion beam body.

In one embodiment, the mounting bracket comprises a first side plate, a second side plate and a connecting plate connected between the first side plate and the second side plate, the connecting plate is supported at one end of the bottom plate, which is close to the torsion beam body, the first side plate and the second side plate are respectively provided with a clamping groove, the clamping grooves are used for being clamped on the torsion beam body, and the first side plate, the second side plate and the connecting plate jointly enclose into the avoidance gap.

This arrangement facilitates the installation of the adjustment post and the driving member, etc.

Compared with the prior art, the torsion beam structure that this application provided, when adjusting the post along mounting axial at the regulation downthehole motion, adjust the post and can give the stopper effort to drive the part or the whole synchronous axial along adjusting the post of stopper and remove, thereby can change the inclination of stopper installation face. Therefore, the toe-in and camber angle of the vehicle can be adjusted, so that the problems of deviation, tire grinding and the like of the vehicle are avoided. And the torsion beam structure is simpler, can reduce processing cost.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of a torsion beam structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a base plate according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of an adjusting column according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of a torsion beam structure according to one embodiment provided herein;

fig. 5 is a schematic structural diagram of a torsion beam structure according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a driving motor according to an embodiment of the present application.

The symbols in the drawings are as follows:

100. a torsion beam structure; 10. a bottom plate; 11. an adjustment aperture; 111. a stop step; 12. a limit groove; 13. a connection hole; 20. an adjusting column; 21. a fitting hole; 22. a limit protrusion; 23. a large end; 24. a small end; 30. a driving member; 31. a drive hole; 32. an avoidance groove; 40. a torsion beam body; 41. a first stringer; 42. a cross beam; 50. a mounting bracket; 51. a first side plate; 52. a second side plate; 53. a connecting plate; 54. avoiding the notch; 55. a clamping groove.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used in the description of the present application for purposes of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact of the first feature with the second feature, or an indirect contact of the first feature with the second feature via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The term "and/or" as used in the specification of this application includes any and all combinations of one or more of the associated listed items.

The torsion beam suspension has the advantages of simple structure, low cost and easy manufacture and installation, is a suspension structure widely applied at present, and the wheels are connected with the vehicle body through the torsion beam suspension.

In order to ensure the stability and reliability of the vehicle during running, the wheels are provided with toe-in and camber angles. The toe-in angle refers to an included angle between the center plane of the wheel and the X axis of the whole vehicle in the projection view of the whole vehicle ground. The camber angle refers to the included angle between the central plane of the wheel and the Z axis of the whole vehicle in the longitudinal projection view of the whole vehicle. Toe-out and camber are important parameters of the performance of the whole vehicle, and if the toe-out and camber are disqualified, the control performance of the whole vehicle is reduced, for example, the problems of deviation, tire grinding, shaking and the like of the vehicle are caused.

In the existing torsion beam suspension structure, an inner mounting surface of a brake is attached to a mounting surface of a torsion beam, and an outer mounting surface of the brake is connected with a wheel, so that a center surface of the wheel is parallel to the mounting surface of the torsion beam. Thus, adjustment of the toe-in and camber of the vehicle can be achieved by changing the inclination angle of the torsion beam mounting surface. However, because the torsion beam suspension has a simple structure, if the angle of the installation surface of the torsion beam is required to be adjusted, gaps are easily generated between the torsion beam and the brake, so that the brake cannot be reliably fixed on the torsion beam, and the safety performance of the whole vehicle is affected. Therefore, the toe-in and camber of the present vehicle are mainly ensured depending on the processing accuracy of the torsion beam, thereby increasing the manufacturing cost of the torsion beam. And when the vehicle is subjected to larger impact and the toe-in and camber are changed, the problem can be solved only by replacing the new torsion beam, and the maintenance cost is increased.

Referring to fig. 1, in order to solve the problem that the conventional torsion beam is difficult to adjust the toe-in and camber of a vehicle, the present application provides a torsion beam structure 100, and the torsion beam structure 100 is installed in the vehicle.

As shown in fig. 1 and 2, the torsion beam structure 100 includes a base plate 10, an adjustment post 20, and a fixing member (not shown), the base plate 10 is provided with an adjustment hole 11, the adjustment post 20 is provided through the adjustment hole 11 and is used for connecting a brake (not shown), and the adjustment post 20 is provided with an assembly hole 21. The fixing member is inserted into the assembly hole 21 for connecting the brake with the brake disc. The adjusting column 20 can move in the axial direction of the fixing element in the adjusting bore 11 for moving the brake.

It will be appreciated that when the adjustment post 20 moves axially along the mounting member within the adjustment aperture 11, the adjustment post 20 can impart a force to the brake that will move part or all of the brake in a synchronous manner along the axial direction of the adjustment post 20, thereby enabling the angle of inclination of the brake mounting surface to be varied. Therefore, the toe-in and camber angle of the vehicle can be adjusted, so that the problems of deviation, tire grinding and the like of the vehicle are avoided. In addition, the torsion beam structure 100 is simple in structure and can reduce the processing cost.

Wherein the axis of the adjustment post 20 is parallel or coincident with the axis of the fixture.

In an embodiment, the end of the adjusting column 20 is in abutting fit with the brake, and when the adjusting column 20 moves along the axial direction of the fixing piece close to the brake, the adjusting column 20 can push the brake to move in the direction away from the bottom plate 10, so that adjustment of the toe-in and the camber angle of the vehicle is achieved.

In other embodiments, the adjusting post 20 and the brake may be fixedly connected by other structures, and the brake may reciprocate together with the adjusting post 20 when the adjusting post 20 reciprocates along the axial direction of the fixing member.

Further, in an embodiment, the adjusting post 20 is screwed with the fixing member, and the adjusting post 20 can rotate around its own axis relative to the fixing member under the action of external force. A limiting structure is arranged between the adjusting column 20 and the adjusting hole 11, and the limiting structure can prevent the adjusting column 20 from rotating around the axis of the adjusting column 20 so that the adjusting column 20 moves along the axial direction of the adjusting column.

That is, the movement of the adjusting column 20 along the axial direction thereof is satisfied by the way of screw transmission, so that the brake is driven to integrally move by the adjusting column 20. And, because the limit structure is arranged between the adjusting column 20 and the adjusting hole 11, the adjusting column 20 can be ensured to move only along the axial direction of the adjusting column, and can not rotate, and the movement of the adjusting column 20 is more stable.

Further, in an embodiment, the limiting structure includes a limiting protrusion 22 and a limiting groove 12, one of the limiting protrusion 22 and the limiting groove 12 is disposed on the adjusting post 20, the other is disposed on the wall of the adjusting hole 11, and the limiting protrusion 22 is clamped in the limiting groove 12 and can move along the axial direction of the adjusting hole 11 in the limiting groove 12.

Thus, the limiting protrusion 22 and the limiting groove 12 are simple in structure and easy to process. In addition, the limiting protrusion 22 is subject to the stopping action of the side wall of the limiting groove 12, so that the limiting protrusion 22 can only move along the length direction of the limiting groove 12, namely the axial direction of the adjusting column 20, thereby avoiding the rotation of the adjusting column 20.

Specifically, the present application describes an example in which the limiting boss 22 is provided on the adjusting post 20, and the limiting groove 12 is provided on the wall of the adjusting hole 11.

The limiting protrusion 22 is connected to the outer wall of the adjusting column 20 and extends along the axial direction of the adjusting column 20, the limiting groove 12 is communicated with the adjusting hole 11, and the limiting protrusion 22 and the limiting groove 12 are movably matched along the axial direction of the adjusting column 20, so as to realize the function of preventing the adjusting column 20 from rotating around the axis thereof.

In an embodiment, the number of the limiting protrusions 22 is two, and the two limiting protrusions 22 are symmetrically distributed on two sides of the adjusting column 20 along the radial direction of the adjusting column, and the number of the limiting grooves 12 is two corresponding to the number of the limiting protrusions 22, so that the reliability of limiting is further improved. Of course, in other embodiments, the number of the limiting protrusions 22 may be three, four or more, and may be reasonably set according to actual needs, which is not limited herein.

Further, in an embodiment, the limiting protrusion 22 and the adjusting post 20 are integrally formed, so as to improve the connection strength between the limiting protrusion 22 and the adjusting post 20, thereby ensuring the reliability of limiting. Of course, in other embodiments, the limiting boss 22 may be connected to the adjusting post 20 by welding or the like, as long as the same effect can be achieved.

Of course, in other embodiments, the limiting protrusion 22 may be disposed on the wall of the adjusting hole 11, and the limiting groove 12 is disposed on the outer peripheral wall of the adjusting post 20, so long as the rotation stopping effect of the adjusting post 20 can be achieved.

In an embodiment, as shown in fig. 4 and 5, the torsion beam structure 100 further includes a driving member 30, where the driving member 30 is connected to the bottom plate 10, and the driving member 30 is provided with a driving hole 31, and the driving member 30 is sleeved on the adjusting column 20 through the driving hole 31 and connected to the adjusting column 20, and the driving member 30 can drive the adjusting column 20 to move along its own axial direction.

The movement of the adjusting column 20 can be realized by arranging the driving piece 30, and the adjusting mode is simple. And the automatic adjustment is convenient to realize, and the time and the labor are saved.

In one embodiment, the driving member 30 is a rotating motor, which is relatively inexpensive.

In other embodiments, the driving member 30 may be a linear motor, and when the driving member 30 is a linear motor, the fixing member and the adjusting column 20 may be in a non-threaded connection, so long as the adjusting column 20 can move along its own axial direction.

To further improve the movement stability of the adjustment column 20, a speed reducer, such as a gear reduction mechanism, may be provided between the driving member 30 and the adjustment column 20.

In one embodiment, as shown in fig. 6, the driving member 30 is further provided with a relief groove 32 communicating with the driving hole 31, and the relief groove 32 is disposed corresponding to the limit protrusion 22.

Because the cooperation of the limiting protrusion 22 and the limiting groove 12 is required to realize the rotation stopping function of the adjusting column 20, the limiting protrusion 22 needs to maintain a state of penetrating through the limiting groove 12 during the movement of the adjusting column 20. In this way, the avoidance groove 32 is formed in the driving member 30, so that the avoidance effect on the limit protrusions 22 can be achieved, interference between the driving member 30 and the limit protrusions 22 is prevented, and the operation reliability of the overall structure is improved.

And when the limiting protrusion 22 is disposed on the hole wall of the adjusting hole 11, and the limiting groove 12 is disposed on the outer peripheral wall of the adjusting column 20, the driving member 30 may not be provided with the avoiding groove 32, which is simpler in structure.

In one embodiment, as shown in fig. 3, the adjustment post 20 includes a large end 23 and a small end 24 connected to the large end 23, the large end 23 having a diameter greater than the small end 24. Wherein the small end 24 is arranged through the adjustment hole 11 and is connected to the driving member 30, and the end of the large end 23 facing away from the small end 24 is used for connecting a brake.

In this way, since the diameter of the large end portion 23 is large, the contact area between the adjustment post 20 and the brake can be increased, and the connection stability between the adjustment post 20 and the brake can be improved. The small end 24 is convenient to be matched with the adjusting hole 11, so that the material cost is saved.

Further, in an embodiment, as shown in fig. 2, the inner wall of the adjusting hole 11 is further provided with a stop step 111, and the stop step 111 stops at an end of the large end portion 23 near the small end portion 24.

By providing the stopper step 111, the large end portion 23 can be restricted from moving in a direction approaching the driving member 30, so that the large end portion 23 and the driving member 30 are prevented from interfering, and the connection stability of the driving member 30 is ensured.

The limiting groove 12 is formed in the stopping step 111, so that processing is simpler.

In other embodiments, the stop step 111 is not required, and the size of the adjusting hole 11 is adapted to the size of the small end 24, so that the large end 23 can stop on the end surface of the bottom plate 10, thereby realizing the limit of the bottom plate 10 to the movement of the adjusting column 20.

In an embodiment, the bottom plate 10 is further provided with a connecting hole 13 for connecting with a wheel axle, the number of the adjusting holes 11 is plural, and the adjusting holes 11 are distributed at intervals around the axis of the connecting hole 13.

Thus, through setting up a plurality of regulation holes 11, and each regulation hole 11 all corresponds to be provided with regulation post 20, a plurality of regulation posts 20 combined action to can improve the regulation precision of regulation post 20 to the stopper, and can also realize more multi-angle regulation, increase the scope of regulation.

Specifically, the number of the adjustment holes 11 is four in the present application, and the four adjustment holes 11 are arranged in a matrix.

Further, in an embodiment, the bottom plate 10 is a forging, and the bottom plate 10 formed by forging has high rigidity and strength, so that the mounting and fixing of the adjusting column 20 and the parts such as the brake can be realized.

In one embodiment, as shown in fig. 1, 4 and 5, the torsion beam structure 100 further includes a torsion beam body 40 and a mounting bracket 50, the bottom plate 10 is fixedly disposed on the torsion beam body 40 through the mounting bracket 50, and the mounting bracket 50 is configured with the avoidance gap 54. The relief notch 54 is used to relieve the structure of the driving member 30, the fixing member, the adjusting post 20, etc., thereby facilitating the installation and improving the assembly efficiency.

By providing the mounting bracket 50, the bottom plate 10, the adjusting column 20, the driving member 30, the brake, and the like can be fixedly connected to the torsion beam body 40. In addition, the mounting bracket 50 can be correspondingly designed according to the structure of the bottom plate 10, so that the connection strength of the bottom plate 10 and the torsion beam body 40 is improved, and the mounting requirements of the adjusting column 20, the driving piece 30 and the like are met.

The torsion beam body 40 only shows the left part, the right part is symmetrically arranged, and the right part is also provided with the bottom plate 10, the adjusting column 20, the driving member 30 and other structures provided by the application.

Specifically, the torsion beam body 40 includes a first side member 41, a second side member (not shown), and a cross member 42 connected between the first side member 41 and the second side member, and the floor panel 10 is fixed to the first side member 41 and the second side member by a mounting bracket 50, to thereby achieve adjustment of both side wheels. For convenience of description, the first longitudinal beam 41 is specifically described in this application, and the second longitudinal beam has the same structure as the first longitudinal beam 41.

In one embodiment, as shown in fig. 1, 4 and 5, the mounting bracket 50 includes a first side plate 51, a second side plate 52, and a connection plate 53 connected between the first side plate 51 and the second side plate 52. The connection plate 53 is supported at one end of the bottom plate 10 near the torsion beam body 40. The first side plate 51 and the second side plate 52 are both provided with a clamping groove 55, the clamping groove 55 is used for clamping the torsion beam body 40, and the first side plate 51, the second side plate 52 and the connecting plate 53 jointly enclose an avoidance gap 54.

Specifically, the clamping groove 55 is adapted to the structure of the first longitudinal beam 41, so that the first side plate 51 and the second side plate 52 can be clamped on a part of the circumferential side of the first longitudinal beam 41 through the clamping groove 55 and further fixed through welding, thereby realizing the fixed connection between the mounting bracket 50 and the first longitudinal beam 41. The base plate 10 is supported by the connection plate 53, and the installation firmness of the base plate 10 can be further improved.

And, compare in bottom plate 10 direct fixation in first longeron 41, this application is through setting up installing support 50, through the gap 54 of dodging that encloses between first curb plate 51, second curb plate 52 and connecting plate 53, can be convenient for adjust the installation of post 20 and driving piece 30 etc. avoid adjusting post 20 and driving piece 30 and torsion beam body 40 or other structures to produce and interfere, further improve assembly security.

During assembly, the base plate 10 may be welded to the mounting bracket 50, and then the adjustment post 20 and the driving member 30 may be mounted, so that the influence of welding on the adjustment post 20 and the driving member 30 may be avoided. Of course, in other embodiments, the adjusting post 20, the driving member 30, etc. may be mounted to the base plate 10 first, and the base plate 10 may be welded to the mounting bracket 50, which is not limited thereto.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of the present application is to be determined by the following claims.

Claims (10)

1. A torsion beam structure, comprising:

a bottom plate (10), wherein the bottom plate (10) is provided with an adjusting hole (11);

the adjusting column (20) is penetrated through the adjusting hole (11) and used for being connected with a brake, and the adjusting column (20) is provided with an assembling hole (21);

the fixing piece is arranged in the assembly hole (21) in a penetrating mode and used for connecting the brake with the brake disc;

wherein the adjusting column (20) can move in the axial direction of the fixing piece in the adjusting hole (11) for driving the brake to move.

2. Torsion beam structure according to claim 1, in which the adjustment post (20) is screwed with the fixing element and the adjustment post (20) is rotatable relative to the fixing element about its own axis under the effect of an external force;

a limiting structure is arranged between the adjusting column (20) and the adjusting hole (11), and the limiting structure can prevent the adjusting column (20) from rotating around the axis of the adjusting column, so that the adjusting column (20) moves along the axial direction of the adjusting column.

3. Torsion beam structure according to claim 2, characterized in that the limit structure comprises a limit projection (22) and a limit groove (12);

one of the limiting protrusions (22) and the limiting grooves (12) is arranged on the adjusting column (20), the other is arranged on the hole wall of the adjusting hole (11), and the limiting protrusions (22) are clamped in the limiting grooves (12) and can move in the limiting grooves (12) along the axial direction of the adjusting hole (11).

4. A torsion beam structure according to claim 3, further comprising a driving member (30), wherein the driving member (30) is connected to the base plate (10), the driving member (30) is provided with a driving hole (31), the driving member (30) is sleeved on the adjusting column (20) through the driving hole (31) and is connected to the adjusting column (20), and the driving member (30) can drive the adjusting column (20) to move along the axial direction thereof.

5. The torsion beam structure according to claim 4, wherein the driving member (30) is further provided with a relief groove (32) communicating with the driving hole (31), and the relief groove (32) is provided in correspondence with the limit projection (22).

6. Torsion beam structure according to claim 4, characterized in that the adjustment column (20) comprises a large end portion (23) and a small end portion (24) connected to the large end portion (23), the large end portion (23) having a larger diameter than the small end portion (24);

the small end part (24) penetrates through the adjusting hole (11) and is connected with the driving piece (30), and one end of the large end part (23) which is away from the small end part (24) is used for being connected with a brake.

7. Torsion beam structure according to claim 6, in which the inner wall of the adjustment hole (11) is further provided with a stop step (111), which stop step (111) stops at the end of the large end (23) near the small end (24).

8. Torsion beam structure according to claim 1, in which the bottom plate (10) is further provided with connecting holes (13) for connecting the wheel shafts, the number of the adjusting holes (11) being plural, the plurality of adjusting holes (11) being distributed at intervals around the axis of the connecting holes (13).

9. The torsion beam structure according to claim 1, further comprising a torsion beam body (40) and a mounting bracket (50), wherein the bottom plate (10) is fixedly arranged on the torsion beam body (40) through the mounting bracket (50), and the mounting bracket (50) is provided with a avoidance gap (54).

10. The torsion beam structure according to claim 9, wherein the mounting bracket (50) comprises a first side plate (51), a second side plate (52) and a connecting plate (53) connected between the first side plate (51) and the second side plate (52), the connecting plate (53) is supported at one end of the bottom plate (10) close to the torsion beam body (40), the first side plate (51) and the second side plate (52) are respectively provided with a clamping groove (55), the clamping grooves (55) are used for being clamped on the torsion beam body (40), and the first side plate (51), the second side plate (52) and the connecting plate (53) jointly enclose the avoidance notch (54).