阅读说明：本技术 车桥位置调整装置 (Axle position adjusting device ) 是由 高恩壮 于彦权 尹传禄 王东生 于 2021-08-11 设计创作，主要内容包括：本申请涉及一种车桥位置调整装置,包括缸体、两个弧形铲和动力机构。缸体包括彼此独立的两个活塞腔和分别滑动连接于对应的活塞腔的两个活塞,每一弧形铲分别与一个活塞连接,弧形铲具有用于与车辆的车轮接触的接触面,接触面被构造为与对应的车轮的外周面的形状相匹配；动力机构用于提供使活塞在对应的活塞腔内作往复运动的动力。上述车桥位置调整装置,当动力机构提供动力使活塞向活塞腔外运动时,连接于活塞的弧形铲通过接触面与对应的车轮接触,进而推动对应的车轮,从而改变连接于该车轮的车桥的位置,通过采用活塞与弧形铲代替人工操作,使调整中桥或后桥位置的效率提高。(The application relates to an axle position adjusting device, which comprises a cylinder body, two arc-shaped shovels and a power mechanism. The cylinder body comprises two piston cavities independent of each other and two pistons respectively connected with the corresponding piston cavities in a sliding manner, each arc-shaped shovel is respectively connected with one piston, each arc-shaped shovel is provided with a contact surface used for contacting with the wheel of the vehicle, and the contact surface is configured to be matched with the shape of the outer peripheral surface of the corresponding wheel; the power mechanism is used for providing power for enabling the piston to reciprocate in the corresponding piston cavity. According to the axle position adjusting device, when the power mechanism provides power to enable the piston to move towards the outside of the piston cavity, the arc-shaped shovel connected to the piston is in contact with the corresponding wheel through the contact surface, and then the corresponding wheel is pushed, so that the position of the axle connected to the wheel is changed, manual operation is replaced by the piston and the arc-shaped shovel, and the efficiency of adjusting the position of the middle axle or the rear axle is improved.)

1. An axle position adjustment device, characterized in that the axle position adjustment device comprises:

the cylinder body comprises two independent piston cavities and two pistons which are respectively connected with the corresponding piston cavities in a sliding manner;

two arcuate shovels, each of the arcuate shovels being connected to one of the pistons, respectively, the arcuate shovels having a contact surface for contacting a wheel of a vehicle, the contact surface being configured to match a shape of an outer peripheral surface of the corresponding wheel;

the power mechanism is used for providing power for enabling the pistons to reciprocate in the corresponding piston cavities;

wherein the outer peripheral surface of the wheel is used for contacting the ground.

2. The axle position adjustment device of claim 1, further comprising a guide structure, the guide structure comprising:

the support is arranged on the part of the piston extending out of the cylinder body;

the guide seat is arranged on the outer surface of the cylinder body;

and the lengthwise extension direction of the guide rod is parallel to the axis of the piston, one end of the guide rod is fixedly connected to the support, and the other end of the guide rod is slidably connected to the guide seat.

3. The axle position adjustment device according to claim 1, further comprising:

and the rolling mechanism is arranged on the part of the piston extending out of the cylinder body and is used for supporting the piston.

4. The axle position adjustment device according to claim 1, further comprising:

one end of the first sliding rod is connected with the cylinder body;

the rotating arm is connected to one end, far away from the cylinder body, of the first sliding rod, and the central line of the rotating arm is parallel to the axis of the cylinder body;

and the two ends of the rotating arm are rotatably connected to the supporting structure.

5. The axle position adjustment device of claim 4, wherein the support structure comprises:

two ends of the rotating arm are respectively and rotatably connected to one end of one second sliding rod, and the two second sliding rods are parallel to each other;

the other ends of the two second sliding rods are connected with the guide rib plate in a sliding manner;

the first supporting plate is arranged in parallel with the second sliding rod, and the guide rib plate is arranged on the first supporting plate.

6. The axle position adjustment device of claim 5, wherein the support structure further comprises:

and the locking piece is arranged on the first supporting plate so as to lock the second sliding rod.

7. The axle position adjustment device of claim 5, wherein the second slide bar includes:

the second sliding rod body is connected with the guide rib plate in a sliding manner;

the rotating arm support is arranged at one end, close to the rotating arm, of the second sliding rod body, the rotating arm is rotatably connected with the rotating arm support, and the guide rib plate can abut against the rotating arm support.

8. The axle position adjustment device according to claim 5, wherein a groove is formed in a side of the first support plate away from the second slide rod, and a longitudinal extension direction of the groove is parallel to an axis of the cylinder;

the supporting structure further comprises a second supporting plate, the second supporting plate is arranged on one side, away from the second sliding rod, of the first supporting plate, and a boss is arranged on the second supporting plate;

the first supporting plate is connected to the boss in a sliding mode through the groove.

9. The axle position adjustment device of claim 4, wherein the first slide bar is slidably coupled to the pivot arm.

10. The axle position adjustment device of claim 9, wherein the first slide bar includes:

the first sliding rod body is connected with the rotating arm in a sliding mode;

the limiting part is arranged on the first sliding rod body, and the rotating arm can be abutted against the limiting part.

Technical Field

The application relates to the technical field of automobiles, in particular to an axle position adjusting device.

Background

Errors generated in the processes of part processing, manufacturing and assembling easily cause that a middle axle or a rear axle of the three-axle vehicle is not perpendicular to a frame longitudinal beam, so that tire abrasion and damage to a suspension system and a steering system are caused. Therefore, the position of the middle or rear axle needs to be adjusted. The middle parts of the middle axle and the rear axle are connected with the vehicle frame through the upper thrust rod, and the two ends of the middle axle and the rear axle are respectively connected with the vehicle frame through the straight lower thrust rod.

However, at present, the position of the middle bridge or the rear bridge can only be adjusted manually, and the problem of low efficiency exists.

Disclosure of Invention

Accordingly, it is desirable to provide an axle position adjusting device capable of efficiently adjusting the position of a middle axle or a rear axle in order to solve the problem of low efficiency in manually adjusting the position of the axle.

According to one aspect of the present application, there is provided an axle position adjustment device comprising:

the cylinder body comprises two independent piston cavities and two pistons which are respectively connected with the corresponding piston cavities in a sliding manner;

two arcuate shovels, each of the arcuate shovels being connected to one of the pistons, respectively, the arcuate shovels having a contact surface for contacting a wheel of a vehicle, the contact surface being configured to match a shape of an outer peripheral surface of the corresponding wheel;

the power mechanism is used for providing power for enabling the pistons to reciprocate in the corresponding piston cavities;

wherein the outer peripheral surface of the wheel is used for contacting the ground.

The axle position adjusting device is provided with the arc-shaped shovel with the contact surface for contacting with the wheel of the vehicle, so that when the power mechanism provides power to move the piston out of the piston cavity, the arc-shaped shovel connected with the piston simultaneously moves out of the piston cavity and contacts with the corresponding wheel through the contact surface which is configured to be matched with the shape of the outer peripheral surface of the corresponding wheel, so that the corresponding wheel is pushed along the axial direction of the piston, and the position of the axle connected with the wheel is changed. The device adopts piston and arc shovel to replace manual operation, makes the efficiency of adjustment middle axle or rear axle position improve.

In one embodiment, the axle position adjustment device further includes a guide structure, the guide structure including:

the support is arranged on the part of the piston extending out of the cylinder body;

the guide seat is arranged on the outer surface of the cylinder body;

and the lengthwise extension direction of the guide rod is parallel to the axis of the piston, one end of the guide rod is fixedly connected to the support, and the other end of the guide rod is slidably connected to the guide seat.

In one embodiment, the axle position adjustment device further includes:

and the rolling mechanism is arranged on the part of the piston extending out of the cylinder body and is used for supporting the piston.

In one embodiment, the axle position adjustment device further includes:

one end of the first sliding rod is connected with the cylinder body;

the rotating arm is connected to one end, far away from the cylinder body, of the first sliding rod, and the central line of the rotating arm is parallel to the axis of the cylinder body;

and the two ends of the rotating arm are rotatably connected to the supporting structure.

In one embodiment, the support structure comprises:

two ends of the rotating arm are respectively and rotatably connected to one end of one second sliding rod, and the two second sliding rods are parallel to each other;

the other ends of the two second sliding rods are connected with the guide rib plate in a sliding manner;

the first supporting plate is arranged in parallel with the second sliding rod, and the guide rib plate is arranged on the first supporting plate.

In one embodiment, the support structure further comprises:

and the locking piece is arranged on the first supporting plate so as to lock the second sliding rod.

In one embodiment, the second slide bar comprises:

the second sliding rod body is connected with the guide rib plate in a sliding manner;

the rotating arm support is arranged at one end, close to the rotating arm, of the second sliding rod body, the rotating arm is rotatably connected with the rotating arm support, and the guide rib plate can abut against the rotating arm support.

In one embodiment, a groove is formed in one side, away from the second sliding rod, of the first supporting plate, and the longitudinal extension direction of the groove is parallel to the axis of the cylinder body;

the supporting structure further comprises a second supporting plate, the second supporting plate is arranged on one side, away from the second sliding rod, of the first supporting plate, and a boss is arranged on the second supporting plate;

the first supporting plate is connected to the boss in a sliding mode through the groove.

In one embodiment, the first slide bar is slidably connected to the rotating arm.

In one embodiment, the first slide bar comprises:

the first sliding rod body is connected with the rotating arm in a sliding mode;

the limiting part is arranged on the first sliding rod body, and the rotating arm can be abutted against the limiting part.

Drawings

FIG. 1 is a schematic structural view of a middle axle, a rear axle and a longitudinal beam of a vehicle according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of an axle position adjustment apparatus according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of an axle position adjustment apparatus according to another embodiment of the present application;

fig. 4 is a schematic structural diagram of an axle position adjustment device according to another embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the two ends of the middle axle 10 and the rear axle 12 are respectively connected to the vehicle frame through a straight lower thrust rod 16, and in the related art, bolts 18 connecting the two ends of the vehicle axle to be adjusted and the lower thrust rod 16 are generally loosened to push the wheels of the vehicle axle to be adjusted until the axis of the vehicle axle is perpendicular to the longitudinal extension direction of the vehicle frame longitudinal beam 14 or the lower thrust rod 16, and at this time, a gasket is added between the contact surfaces of the lower thrust rod 16 and the vehicle axle, and after the bolts 18 are tightened, the position of the vehicle axle is satisfied.

However, at present, the position of the middle axle or the rear axle is manually adjusted, which is time-consuming, labor-consuming and inefficient.

Therefore, it is necessary to provide an axle position adjusting device that can efficiently adjust the position of the intermediate axle or the rear axle.

FIG. 1 is a schematic structural view of a center axle, a rear axle and a longitudinal beam of a vehicle; FIG. 2 is a schematic structural view of an axle position adjustment apparatus according to an embodiment of the present disclosure; fig. 3 is a schematic structural diagram of an axle position adjustment device according to another embodiment of the present application.

Referring to fig. 1 to 3, an axle position adjusting apparatus according to an embodiment of the present invention includes a cylinder 20, two arc shovels 30, and a power mechanism 40.

The cylinder 20 includes two piston chambers independent of each other and two pistons 22 slidably connected to the corresponding piston chambers, respectively. Further, two piston cavities are respectively arranged at two lengthwise ends of the cylinder 20, two pistons 22 are respectively connected with one piston cavity in a sliding manner, and the axis of the piston 22 is parallel to the axis of the cylinder 20. By providing two independent piston chambers, the reciprocating motion of the two pistons 22 in the respective piston chambers is not affected by each other, and it is achieved that when one piston 22 moves, the other piston 22 remains stationary.

The power mechanism 40 is used to provide power to reciprocate the piston 22 within the corresponding piston chamber. In some embodiments, as shown in fig. 2 and 3, the cylinder 20 is configured as a hydraulic cylinder, and the power mechanism 40 includes a hydraulic pump, which is connected to two independent piston chambers through different oil inlet and return pipes, so that the oil inlet and return processes to the two piston chambers do not interfere with each other. Further, the power mechanism 40 is configured to be controlled by a solenoid valve. When the piston 22 is used, a user controls the electromagnetic valve to change the direction of the oil through the button, so that the moving direction of the piston 22 is changed. When the hydraulic pump feeds oil into the piston cavity, the piston 22 moves out of the piston cavity; when the hydraulic pump returns oil, the piston 22 moves into the piston cavity. Through setting up pneumatic cylinder, hydraulic pump and solenoid valve, make axle position adjustment device have simple structure, convenient operation's advantage. In other embodiments, the axle position adjustment device is pneumatically or electrically driven.

Each arc shovel 30 is connected to one of the pistons 22, respectively, the arc shovel 30 having a contact surface for contacting a wheel of the vehicle, the contact surface being configured to match the shape of the outer peripheral surface of the corresponding wheel; wherein the outer peripheral surface of the wheel is used for contacting the ground. It should be noted that when using the axle position device, the user places the cylinder 20 between one middle axle wheel and one rear axle wheel of the vehicle with the axis of the cylinder 20 parallel to the longitudinal extension direction of the longitudinal beam, and two arc shovels 30 correspond to the one middle axle wheel and the one rear axle wheel, respectively, and the contact surfaces of the arc shovels 30 face the corresponding wheels and are configured to match the shape of the outer peripheral surfaces of the corresponding wheels.

Thus, when the position of any one of the middle axle 10 or the rear axle 12 needs to be adjusted, a user can firstly operate the power mechanism 40 to make the two arc-shaped shovels 30 fit with the outer peripheral surfaces of the corresponding wheels through respective contact surfaces, then unscrew the bolts 18 connecting the axle to be adjusted to the lower thrust rod 16 to make the two ends of the axle to be adjusted movable, at this time, the other axle is still fixedly connected to the lower thrust rod 16 through the bolts 18, and by moving the piston 22 close to the axle to be adjusted to the outside of the piston cavity, the arc-shaped shovels 30 move together with the piston 22 and push the wheel to be adjusted until the axle to be adjusted is perpendicular to the vehicle longitudinal beam 14. After the wheel is pushed to the desired position, the user may operate the power mechanism 40 to retract the piston 22 into the piston cavity, facilitating multiple uses of the device and saving space occupied thereby. According to the axle position adjusting device, the piston 22 and the arc-shaped shovel 30 driven by the power mechanism 40 are adopted to replace manual operation, so that the efficiency of adjusting the axle position is improved, and the labor intensity is reduced.

In some embodiments of the present application, as shown in fig. 2 and 3, the axle position adjustment device further includes a rolling mechanism. The rolling mechanism is provided at a portion of the piston 22 extending out of the cylinder 20 and serves to support the piston 22, to reduce a load on the cylinder 20 due to the gravity of the piston 22 and the curved shovel 30, and to reduce friction with the ground when the piston 22 reciprocates in the piston chamber. In some embodiments, the rolling mechanism includes a ball seat 32 disposed on the piston 22 and a ball 32 rollingly connected to the ball seat 32, and a ball 34 rollingly connected to the ground. It will be appreciated that the spherical surface is configured to have a smooth surface, avoiding scratching the ground and further reducing friction.

In some embodiments, as shown in FIG. 2, the axle position adjustment device further includes a guide structure including a bracket 52, a guide seat 54, and a guide rod 56. The abutment 52 is provided on the portion of the piston 22 extending out of the cylinder 20, it being understood that the abutment 52 does not interfere with the rolling mechanism. The guide seat 54 is provided on the outer surface of the cylinder body 20; the guide rod 56 extends lengthwise parallel to the axis of the piston 22, and one end of the guide rod 56 is fixedly connected to the support 52 and the other end is slidably connected to the guide holder 54. Further, the guide holder 54 is provided with a guide hole, and one end of the guide rod 56 passes through the guide hole and is slidably coupled to the guide holder 54 through the guide hole. By providing the guide structure, when the piston 22 reciprocates in the piston chamber, one end of the guide rod 56 slides in the guide hole at the same time, so that the reciprocating motion of the piston 22 is more stable.

Fig. 4 is a schematic structural diagram of an axle position adjustment device according to another embodiment of the present application.

In some embodiments, as shown in fig. 2 and 4, the axle position adjustment device further includes a first slide bar 70, a pivot arm 60, and a support structure. One end of the first slide bar 70 is connected to the cylinder 20. Further, in some embodiments, the first slide bar 70 is rigidly connected to the cylinder 20. The swivel arm 60 is connected to an end of the first slide bar 70 remote from the cylinder 20, and a center line of the swivel arm 60 is parallel to an axis of the cylinder 20. Both ends of the rotating arm 60 are rotatably connected to the support structure.

By providing a support structure, the cylinder 20 is supported. By arranging the rotatable rotating arm 60 and connecting the rotating arm 60 with the cylinder body 20 through the first sliding rod 70, when the rotating arm 60 rotates, the first sliding rod 70 can rotate around the central line of the rotating arm 60, so that the cylinder body 20 rotates, the position of the cylinder body 20 is changed, and the use requirements under different states are met. For example, in order to facilitate the user to operate the position adjustment device and to view the axle and wheels of the vehicle, the support structure may be disposed at one side of a trench for vehicle maintenance, when the user adjusts the position of the axle, the vehicle is parked at a proper position on the ground above the trench, the rotating arm 60 is rotated to make the first sliding rod 70 parallel to the ground, the cylinder 20 is positioned between the wheels of the middle axle 10 and the wheels of the rear axle 12, the power mechanism 40 is operated to make the piston 22 move out of the piston cavity and push the wheel to be adjusted through the arc-shaped shovel 30, and the axle position adjustment device is in a working state; when the vehicle needs to be moved to park or drive away from the parking position, the rotating arm 60 is rotated until the first sliding rod 70 is perpendicular to the ground, so that the cylinder 20 and the arc-shaped shovel 30 are no longer located in the space between the vehicle chassis and the ground, and the vehicle is convenient to move, and the axle position adjusting device is in a non-working state.

In some embodiments, the first sliding rod 70 is slidably connected to the rotating arm 60, so that the cylinder 20 can move along the axial direction of the first sliding rod 70 along with the first sliding rod 70, thereby facilitating the adjustment of the position of the cylinder 20 by moving the first sliding rod 70 in the working state of the axle position adjusting device, so that the contact surface of the arc-shaped shovel 30 is aligned with the corresponding wheel. Further, in some embodiments, as shown in fig. 2 and 4, the rotating arm 60 is provided with a through hole, and the first sliding rod 70 is slidably connected to the rotating arm 60 through the through hole.

In some embodiments, as shown in fig. 4, a handle 72 is provided at an end of the first sliding rod 70 away from the cylinder 20 to facilitate a user to operate the first sliding rod 70 to slide in the through hole of the swing arm 60 or rotate around the center line of the swing arm 60.

In some embodiments, as shown in fig. 4, the first slide bar 70 includes a first slide bar body and a limit portion 74. The first slider body is slidably connected to the rotating arm 60, the limiting portion 74 is disposed on the first slider body, and the rotating arm 60 can abut against the limiting portion 74. In some embodiments, the stopper 74 is configured to be annular and disposed around the outer surface of the first sliding rod body. By providing the position-limiting portion 74, when the first sliding rod 70 is perpendicular to the ground, the rotating arm 60 abuts against the position-limiting portion 74, and the surface of the cylinder 20 is prevented from being damaged due to direct contact or collision of the rotating arm 60 with the cylinder 20.

In some embodiments of the present application, as shown in fig. 2-4, the support structure comprises two second slide bars 90, a guide rib 80 and a first support plate 88. Two ends of the rotating arm 60 are respectively and rotatably connected to one end of one second sliding rod 90, the two second sliding rods 90 are parallel to each other, and the other ends of the two second sliding rods 90 are slidably connected with the guide rib plate 80; the first support plate 88 is disposed parallel to the second slide bar 90, and the guide rib 80 is disposed on the first support plate 88. By providing the first support plate 88, the axle position adjustment device can be secured to a surface, such as a side wall of a trench, by the first support plate 88. By providing two second slide bars 90 slidably coupled to the guide rib 80, the swivel arm 60 coupled to one end of the second slide bar 90 can move along the axial direction of the second slide bar 90 along with the second slide bar 90, and since the swivel arm 60 is also coupled to the first slide bar 70, the distance between the cylinder 20 coupled to the first slide bar 70 and the floor on which the vehicle is parked can be adjusted. For example, in the operating state of the axle position adjusting apparatus, the second slide bar 90 is moved so that the piston 22 is in contact with the ground through the rolling mechanism; in the inoperative state, the second slide rod 90 is moved downwardly, causing the cylinder block 20 and the first slide rod 70 to also move downwardly and closer to the backup plate assembly, reducing the space occupied by the axle position adjustment device when not in use.

In some embodiments, the support structure further includes a latch 84. The locking member 84 is disposed on the first support plate 88 to lock the second slide 90.

In some embodiments, as shown in fig. 2-4, the second slide bar 90 includes a second slide bar body and a swivel arm support. The second slide bar body is slidably connected to the guide rib plate 80; the rotating arm support is arranged at one end of the second slider body close to the rotating arm 60, the rotating arm 60 is rotatably connected with the rotating arm support, as shown in fig. 4, the guide rib 80 can abut against the rotating arm support. By providing a rotating arm support, the guide rib 80 abuts against the rotating arm support when the second slide bar 90 is not locked by the lock 84, preventing the second slide bar 90 from falling down and causing damage to the device.

Further, in some embodiments, the rotating arm support includes a limiting block and an L-shaped member, the second sliding rod 90 is welded to the limiting block, the L-shaped member includes two extending portions perpendicular to each other, one extending portion is fixedly connected to the limiting block, and the other extending portion is configured to be rotatably connected to the rotating arm 60.

In some embodiments, as shown in fig. 2-4, the side of the first support plate 88 away from the second slide rod 90 is provided with a groove, and the longitudinal extension direction of the groove is parallel to the axis of the cylinder 20; the supporting structure further comprises a second supporting plate 86 arranged on one side of the first supporting plate 88 far away from the second sliding rod 90, and the second supporting plate 86 is provided with a boss; the first support plate 88 is slidably connected to the boss through the groove. Thus, the first support plate 88 is slidable along the lengthwise extension direction of the groove, so that the member connected to the first support plate 88 is moved, and the cylinder block 20 is moved along its axis to match the position of the wheel of the vehicle, thereby improving the convenience of operation of the axle position adjustment device.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.