CN114105032A

CN114105032A - Lifting mechanism and vehicle position adjusting device

Info

Publication number: CN114105032A
Application number: CN202111361951.8A
Authority: CN
Inventors: 赵伟; 王俊; 王伟; 温华锋; 李永昌; 梁雄俊
Original assignee: Shenzhen Jingzhi Machine Co Ltd
Current assignee: Shenzhen Jingzhi Machine Co Ltd
Priority date: 2021-09-20
Filing date: 2021-11-17
Publication date: 2022-03-01

Abstract

The application discloses a lifting mechanism and a vehicle position adjusting device. The lifting mechanism comprises: a lifting platform; the supporting mechanism comprises a lifting base, a scissor fork moving seat, a first scissor fork supporting plate and a second scissor fork supporting plate; and the lifting mechanism is connected to the lifting platform. The supporting mechanism is arranged below the lifting platform, the first scissor supporting plate and the second scissor supporting plate of the supporting mechanism can rotate and move along with the up-down movement of the lifting platform, the lifting platform is supported in the lifting process, the lifting mechanism does not need to be arranged below the lifting platform, the height of the lifting mechanism can be reduced, the climbing height of a vehicle can be reduced, and the mounting and debugging of the lifting mechanism and the vehicle position adjusting device are facilitated.

Description

Lifting mechanism and vehicle position adjusting device

Technical Field

The disclosure belongs to the field of battery replacement equipment, and particularly relates to a lifting mechanism and vehicle position adjusting equipment.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

At present, new energy automobiles have attracted more and more attention due to the characteristics of clean fuel, good economic performance, high vehicle cost performance and the like, but the development of the new energy automobiles is limited to a certain extent due to the characteristics of limited battery capacity, long battery charging time and the like. However, in recent years, a vehicle electricity separation technology and an electricity replacement technology are rapidly developed, and rapid energy supplement of a vehicle power battery is achieved.

In order to accurately butt joint a battery pack to a vehicle or a carrier in the battery replacement process, the posture of the vehicle, including the height and the angle of the vehicle, needs to be adjusted. The existing vehicle height and position adjusting equipment needs to use lifting equipment, but the height of the lifting equipment is higher due to the larger volume of the lifting equipment, and the lifting equipment is not favorable for driving a vehicle to lift the vehicle.

Disclosure of Invention

In view of the above, it is necessary to provide a lifting device and a vehicle position adjusting device that can reduce the climbing height of a vehicle.

The present disclosure first provides a lifting mechanism comprising:

a lifting platform;

the supporting mechanism comprises a lifting base, a scissor fork moving seat, a first scissor fork supporting plate and a second scissor fork supporting plate, one end of each of the first scissor fork supporting plate and the second scissor fork supporting plate is hinged to one of the lifting table and the lifting base, the other end of each of the first scissor fork supporting plate and the second scissor fork supporting plate is hinged to the scissor fork moving seat, and the scissor fork moving seat is movably connected to the other of the lifting table and the lifting base;

and the lifting mechanism is connected with the lifting platform and used for pulling the lifting platform to move along the vertical direction, and when the lifting mechanism pulls the lifting platform to move along the vertical direction, the first scissor support plate and the second scissor support plate follow the lifting platform to move so as to support the lifting platform.

Preferably, the lifting mechanism comprises:

a lift drive;

the connecting mechanism comprises a push rod, a supporting seat and a supporting rod, wherein the push rod is connected with the lifting driving machine and the lifting platform, and the lifting driving machine drives the push rod to move in the vertical direction to drive the lifting platform to move in the vertical direction.

Preferably, coupling mechanism still includes supporting seat and bracing piece, the supporting seat connect in the push rod, bracing piece one end connect in the supporting seat, the other end connect in the elevating platform, when the push rod removed along vertical direction, through the supporting seat with the bracing piece drives the elevating platform removes along vertical direction.

Preferably, the lifting mechanism further comprises a buffer, and the buffer is arranged below the lifting platform.

Preferably, the supporting mechanism further comprises a scissor fixing seat, the scissor fixing seat is connected to the lifting base or the lifting platform, and the first scissor supporting plate and the second scissor supporting plate are hinged to the scissor fixing seat.

Preferably, the supporting mechanism further comprises a pin shaft, the pin shaft is rotatably connected to the middle portions of the first scissor supporting plate and the second scissor supporting plate, and when the lifting platform is lifted, the first scissor supporting plate and the second scissor supporting plate relatively rotate to move along with the lifting platform.

Further, the present disclosure also provides a vehicle position adjustment apparatus including:

the lifting mechanism is used for bearing the front wheels and the rear wheels of the vehicle so as to move the vehicle in the vertical direction;

centering mechanism, including centering driving motor, gear, rack and centering ejector pin, centering driving motor connect in the gear, the gear with the rack toothing, the rack connect in centering ejector pin, centering driving motor drive the gear revolve, the gear passes through the rack stretches out in order to support through centering ejector pin and push away the wheel of vehicle is in order to adjust the gesture of vehicle.

Preferably, the centering mechanism comprises a pair of racks, the racks are arranged in parallel and located on two sides of the gear, and when the gear rotates, the racks are driven to extend or retract towards two sides simultaneously.

Preferably, the centering mechanism is arranged on the lifting platform, and the centering ejector rod is pushed against the inner side of the wheel to adjust the posture of the vehicle when being driven by the rack to extend out.

Preferably, the centering mechanism further comprises a first roller set and a second roller set, the first roller set is rotatably connected to a lifting platform of a lifting mechanism carrying front wheels, and the first roller set is obliquely arranged along the vertical direction to form a recessed area for carrying the front wheels of the vehicle; the second roller group is rotationally connected with a lifting platform of a lifting mechanism bearing the rear wheel; when the centering mandril pushes against the wheel of the vehicle, the wheel moves through the first roller group and the second roller group to adjust the posture of the vehicle.

Compared with the prior art, foretell elevating system and vehicle position adjustment equipment set up supporting mechanism through the below at the elevating platform, the first scissors backup pad and the second scissors backup pad of supporting mechanism can follow reciprocating and rotation and removal of elevating platform, support the elevating platform at the lift in-process, like this, elevating system can not need set up in the below of elevating platform, thereby can reduce elevating system's height, thereby also can reduce the climbing height of vehicle, also be favorable to the installation and the debugging of elevating system and vehicle position adjustment equipment.

Drawings

In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic configuration diagram of a vehicle position adjustment apparatus.

Fig. 2 is a schematic structural view of a front wheel lifting mechanism carrying front wheels in a lifting position.

Fig. 3 is a schematic structural diagram of the front wheel lifting mechanism in another view.

Fig. 4 is a schematic structural view of the rear wheel lifting mechanism carrying the rear wheel in an initial position.

Fig. 5 is a schematic structural view of the centering mechanism.

Fig. 6 is a schematic structural view of the vehicle position adjustment apparatus in the initial position.

Fig. 7 is a schematic structural view of the vehicle position adjustment apparatus in the lifted position.

Fig. 8 is a schematic structural view of the vehicle position adjusting apparatus in a state of centering the vehicle.

In the figure:

100-a parking platform; 200-lifting power box; 300-rear wheel lifting mechanism; 400-front wheel lifting mechanism; 500-a vehicle; 201-power box base; 202-a lift drive; 203-a push rod; 204-support rods; 205-a support base; 206-pin shaft; 401-a lifting base; 402-a buffer; 403-a lifting platform; 404-a first roller group; 405: a second roller set; 310-a lifting mechanism; 311-scissor fixing seats; 312-a first scissor support plate; 313-a second scissor support plate; 314-scissor shift mount; 320-a centering mechanism; 321-centering the ejector rod; 322-a slider; 323-guide rail; 324-a rack; 325-gear; 326-centering the drive motor; 327-guide wheel.

The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Fig. 1 is a schematic configuration diagram of a vehicle position adjustment apparatus. As shown in fig. 1, the vehicle position adjusting apparatus includes a parking platform 100 and two elevating mechanisms for carrying front and rear wheels of the vehicle to move the vehicle in a vertical direction. In the present embodiment, for convenience of description, the two elevating mechanisms are the rear wheel elevating mechanism 300 and the front wheel elevating mechanism 400. The front wheel lifting platform 40 is fixed at the front end of the parking platform 100, the rear wheel lifting mechanism 300 is fixed at the rear end of the parking platform 100, and the lifting power box 200 is placed outside the parking platform 100. When the vehicle 500 needs to be replaced with a battery or the vehicle 500 is operated, the vehicle 500 is driven into the parking platform 100 of the vehicle position adjustment apparatus, and the front wheels are located on the front wheel elevating mechanism 400 and the rear wheels are located on the rear wheel elevating mechanism 300. Under the control of the elevating power box 200, the front wheel elevating mechanism 400 and the rear wheel elevating mechanism 300 may be moved up or down to raise or lower the vehicle 500, so that the position of the vehicle 500 may be adjusted.

The rear wheel lifting mechanism 300 and the front wheel lifting mechanism 400 have substantially the same structure, and the lifting mechanism will be described in detail below by taking the front wheel lifting mechanism 400 as an example.

Fig. 2 is a schematic view of the front wheel lifting mechanism 400 carrying the front wheels in a lifted position, fig. 3 is a schematic view of the front wheel lifting mechanism in another view, and fig. 4 is a schematic view of the rear wheel lifting mechanism 300 carrying the rear wheels in an initial position. As shown in fig. 2 to 4, the front wheel lifting mechanism 400 and the rear wheel lifting mechanism 300 have the same structure, except for the difference in the centering mechanism. The front wheel lifting mechanism 400 includes a lifting table 403, a support mechanism, and a lifting mechanism, for example, the front wheel lifting mechanism 300. The support mechanism is provided below the lift table 403 and supports the lift movement of the lift table 403. The lifting mechanism may be disposed outside the lifting base 401 for lifting the lifting platform 403, so that the lifting platform 403 moves in a vertical direction.

Specifically, the supporting mechanism includes a lifting base 401, a first scissors support plate 312, a second scissors support plate 313 and a scissors moving seat 314. When the lifting mechanism pulls the front wheel lifting mechanism 400 to move in the vertical direction, the first scissors support plate 312 and the second scissors support plate 313 move along with the lifting mechanism 400 to support the lifting mechanism 400.

The lifting base 401 is substantially a flat plate structure and is fixed to the parking platform 100. In some embodiments, one or more buffers 402 having an elastic material may also be mounted on the lifting base 401. The buffer 402 is disposed below the lift table 403 and used for buffering and protecting the lift table 403.

A first scissors support plate 312 and a second scissors support plate 313 are disposed between the lifting base 401 and the lifting platform 403 for supporting the lifting platform 403. In some embodiments, the first scissors support plate 312 and the second scissors support plate 313 are symmetrically disposed, wherein the first scissors support plate 312 is hinged to the lifting platform 303 at the top end and is hinged to the scissors moving seat 314 at the bottom end, so as to be movably connected to the lifting base 401 through the scissors moving seat 314 in the horizontal direction. In some embodiments, the scissors moving mount 314 may be movably coupled to the lift base 401 via a slider-slide rail arrangement. Thus, the bottom end of the first scissors support plate 312 can move along the horizontal direction through the scissors moving seat 314, and the included angle between the first scissors support plate 312 and the lifting base 401 is adjusted, so that the height between the top end of the first scissors support plate 312 and the lifting base 401 can be adjusted.

In this embodiment, the second scissors support plate 313 has a top end hinged to the scissors moving base 314, and is connected to the lifting platform 303 by the scissors moving base 314 so as to move in the horizontal direction, and a bottom end hinged to the lifting base 401. Specifically, the lifting base 401 is provided with one or more scissor fixing seats 311, the scissor fixing seats 311 are arranged on two sides of the lifting base 401 in parallel, and the bottom end of the second scissor supporting plate 313 is hinged to the scissor fixing seats 311 and is hinged to the lifting base 401 through the scissor fixing seats 311. In other embodiments, the hinged ends of the first scissors support plate 312 and the second scissors support plate 313 may also be hinged by the scissors fixing seat 311, for example, the hinged ends may be hinged to the lifting platform 303 by the scissors fixing seat 311.

In some preferred embodiments, first scissors support plate 312 and second scissors support plate 313 are symmetrically arranged in a cross-like configuration to form an "x" configuration between lift platform 303 and lift base 401. In some embodiments, the support mechanism further includes a pin 206, and the pin 206 is rotatably connected to the middle portions of the first scissors support plate 312 and the second scissors support plate 313, so that the middle portions of the first scissors support plate 312 and the second scissors support plate 313 form a hinged connection. When the lifting platform 303 is lifted, the first scissors support plate 312 and the second scissors support plate 313 rotate relatively to move along with the lifting platform 303. Thus, by opening or folding the first scissors support plate 312 and the second scissors support plate 313, when the lifting platform 303 moves, the ends of the first scissors support plate 312 and the second scissors support plate 313 move in the horizontal direction by the scissors moving base 314, and the first scissors support plate 312 and the second scissors support plate 313 rotate relative to the lifting platform 303 and the lifting base 401 to follow the movement of the lifting platform 303 and support the lifting platform 303.

With continued reference to fig. 2-4, a lifting mechanism 301 is connected to the lifting platform 303 for pulling the lifting platform 303 to move in a vertical direction. The lifting mechanism 301 comprises a lifting drive and a connecting mechanism, and the lifting drive can draw the lifting platform 303 to move along the vertical direction through the connecting mechanism. In this embodiment, the components of the lifting mechanism 301 may be placed in a lifting power box 200, and the lifting power box 200 is located at a lateral position of the lifting base 401 and corresponds to the lifting platform 303.

The lifting mechanism 301 includes a power box base 201 fixed to a lifting base 401, and a lifting driver 202 mounted to the power box base 201. In this embodiment, the lift driver 202 may be an electric motor, a hydraulic cylinder or a pneumatic cylinder, and one skilled in the art can select a suitable type of power source as the lift driver 202 as needed. Because the scissor structure formed by the first scissor support plate 312 and the second scissor support plate 313 is arranged below the lifting platform 303, the lifting mechanism 301 can be arranged at the position of the side edge of the lifting platform 403 without being arranged below the lifting platform 403, so that the height of the lifting mechanism can be reduced, the climbing height of the vehicle 500 is reduced, and the installation and maintenance of the lifting mechanism 301 are facilitated.

The connecting mechanism comprises a push rod 203, a supporting seat 205 and a supporting rod 204. The push rod 203 is fixedly installed on the power box base 201 and connected to the lift driving machine 202 for extending or retracting in the vertical direction or moving in the vertical direction by the lift driving machine 202. The middle of the support base 205 is connected with the push rod 203, and the number of the support rods 204 is a pair, which are respectively connected with the two ends of the support base 205. In this embodiment, the top end of the support rod 204 is connected to the end of the support base 205, and the bottom end is hinged to the lifting platform 303. Thus, when the lifting driver 202 drives the push rod 203 to move up and down, the lifting platform 303 connected with the support rod 204 is driven to move up and down by the support base 205.

Fig. 5 is a schematic structural view of the centering mechanism 320. As shown in fig. 5, the centering mechanism 320 includes a centering driving motor 326, a gear 325, a rack 324, and a centering ram 321. The centering driving motor 326 is driven by the gear 325 and the rack 324 to push the centering push rods 321 to move in the opposite direction or the opposite direction, so that the wheels of the vehicle can be pushed against, and the centering adjustment of the vehicle is realized.

The axis of the gear 325 extends in the vertical direction, and the centering driving motor 326 is connected to the gear 325 and is used for driving the gear 325 to rotate. In this embodiment, the centering mechanism 320 includes a pair of racks 324, the racks 324 are disposed in parallel and located on two sides of the gear 325, and when the gear 325 rotates, the racks 324 are driven to extend or retract to two sides simultaneously. In this embodiment, the gear 325 is disposed at the middle position of the lifting platform 403, and the centering rod 321 pushes against the inner side of the wheel to adjust the posture of the vehicle 500 when being driven by the rack 325 to extend out. In some embodiments, one or more guide wheels 327 rotatably coupled to the platform 403 are further disposed on an outer side of the rack 324 for guiding the extending or retracting movement of the rack 324.

Correspondingly, the centering rods 321 are a pair and connected to the end of the rack 324. In this embodiment, the centering lift rod 321 is movably connected to the lift table 403 via a guide rail 323 and a slider 322. The guide rails 323 are arranged on two sides of the lifting platform 303 in parallel, two sliding blocks 322 are distributed on the guide rails 323, and the centering push rods 321 are connected to the sliding blocks 322 and arranged in opposite directions. When the centering driving motor 312 drives the gear 324 to rotate, the gear 311 drives the upper and lower racks 324 to move linearly, so as to drive the centering top rod 301 to move towards two sides, thereby realizing the position adjustment of the vehicle in the width direction.

To facilitate the movement of the wheels, the centering mechanism further comprises a first roller set 404 and a second roller set 405, wherein the first roller set 404 is rotationally connected to the lifting table 303 of the front wheel lifting mechanism 400 carrying the front wheels and the second roller set 405 is rotationally connected to the lifting table 303 of the rear wheel lifting mechanism 300 carrying said rear wheels.

Referring back to fig. 2, the first roller set 404 includes two laterally extending rows of rollers that are rotatably connected to the lift 303. In order to facilitate the positioning of the front wheels of the vehicle, the two rows of rollers of the first roller set 303 are arranged obliquely along the vertical direction, so that the two ends of the first roller set 303 are high and the middle of the first roller set is low, and a concave area for accommodating the front wheels of the vehicle is formed. When the vehicle 500 enters the vehicle position adjustment apparatus, the front wheels of the vehicle 500 may fall into the recessed regions of the first roller set 303, achieving positioning of the vehicle 500 in the traveling direction. Referring again to fig. 4, the second roller set 405 includes a laterally extending row of rollers that are rotatably coupled to the lift 303. In this way, the lifting platform 403 bears the vehicle 500 through the rollers of the first roller set 404 and the second roller set 405, and when the vehicle 500 enters the vehicle position adjustment apparatus, since the front wheel lifting mechanism 400 bearing the front wheels and the rear wheel lifting mechanism 300 bearing the rear wheels are independently controlled, the lifting height of the front wheel lifting mechanism 400 bearing the front wheels can be controlled to be slightly larger than that of the rear wheel lifting mechanism 400 bearing the rear wheels, and thus, the front wheel lifting mechanism 400 bearing the front wheels supplements the depth of the recessed area through the height, so that the heights of the front part and the rear part of the vehicle 500 can be balanced, and the vehicle 500 can be maintained in a correct battery replacement posture.

When the centering mandril 321 pushes the wheels of the vehicle 500, the front wheels of the vehicle 500 can be adjusted by moving the first roller group 404, and the rear wheels of the vehicle 500 can be adjusted by moving the second roller group 405, so that the posture of the vehicle 500 is adjusted, and the vehicle 500 keeps a correct battery replacement posture.

The operation of the above-described vehicle position adjusting apparatus will be described with reference to fig. 6 to 8.

Fig. 6 is a schematic structural view of the vehicle position adjustment apparatus in the initial position. As shown in fig. 6, the vehicle 500 travels to the parking platform 100 of the vehicle position adjustment apparatus. At this time, the front wheels of the vehicle 500 are positioned on the front wheel lifting mechanism 400, and the rear wheels are positioned on the rear wheel lifting mechanism 300.

Fig. 7 is a schematic structural view of the vehicle position adjustment apparatus in the lifted position. As shown in fig. 7, the lifting mechanism lifts the vehicle to a position of a preset height. Specifically, when the lifting driver 202 drives the push rod 203 to move up and down, the supporting base 205 drives the lifting platform 303 connected to the supporting rod 204 to move up and down, so as to move the vehicle 500 to a position with a preset height. It should be noted that in the present embodiment, the front wheel lifting mechanism 400 and the rear wheel lifting mechanism 300 are operated independently, and the front wheels and the rear wheels of the vehicle 500 are lifted independently until the front part and the rear part of the vehicle 500 are located at the same height. However, in other embodiments, the front wheel lifting mechanism 400 and the rear wheel lifting mechanism 300 may be mechanically or controllably linked to the lifting/lowering drive 202 or the lifting platform 403 such that the front wheel lifting mechanism 400 and the rear wheel lifting mechanism 300 are synchronously lifted or lowered.

Fig. 8 is a schematic structural view of the vehicle position adjusting apparatus in a state of centering the vehicle. As shown in fig. 8, when the vehicle 500 is located at the initial position or the lifting position, the centering mechanism pushes the wheels from the inner sides of the wheels to adjust the parking angle of the vehicle, so that the vehicle 500 is parked in a straight line state, and the vehicle 500 is prevented from being parked obliquely to hinder subsequent power exchange or transportation operation.

In addition, during the lifting or lowering operation, the elevating platform 403 may be inclined during the operation of the elevating mechanism, and the vehicle 500 may slip off the elevating platform 403. In this application, centering mechanism removes through drive rack 324 for centering ejector pin 321 props the wheel from the inboard top of wheel, has also played the danger that prevents vehicle 500 from the landing from elevating platform 403, has ensured vehicle 500's safety.

The supporting mechanism is arranged below the lifting platform 403, the first scissor supporting plate 311 and the second scissor supporting plate 312 of the supporting mechanism can rotate and move along with the up-down movement of the lifting platform 403, and the lifting platform 403 is supported in the lifting process, so that the lifting mechanism 301 does not need to be arranged below the lifting platform 403, the height of the lifting mechanism can be reduced, the climbing height of the vehicle 500 can be reduced, and the mounting and debugging of the lifting mechanism and the vehicle position adjusting device are facilitated.

In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.

Claims

1. A lift mechanism, comprising:

a lifting platform;

2. The lift mechanism of claim 1, wherein the lift mechanism comprises:

a lift drive;

3. The lift mechanism as claimed in claim 2, wherein the connecting mechanism further comprises a support base and a support rod, the support base is connected to the push rod, one end of the support rod is connected to the support base, the other end of the support rod is connected to the lift table, and the lift table is driven to move in the vertical direction by the support base and the support rod when the push rod moves in the vertical direction.

4. The lift mechanism of claim 3, further comprising a bumper disposed below the lift table.

5. The lifting mechanism as claimed in claim 4, wherein the supporting mechanism further comprises a scissor holder, the scissor holder is connected to the lifting base or the lifting platform, and the first scissor support plate and the second scissor support plate are hinged to the scissor holder.

6. The lift mechanism of claim 1, wherein the support mechanism further includes a pin pivotally coupled to a central portion of the first scissor support plate and the second scissor support plate, wherein the first scissor support plate and the second scissor support plate pivot relative to each other to follow the lift platform as the lift platform is raised and lowered.

7. A vehicle position adjustment apparatus, characterized by comprising:

the lifting mechanism of any one of claims 1-6, for carrying front and rear wheels of the vehicle to move the vehicle in a vertical direction;

8. The vehicle position adjusting apparatus according to claim 7, wherein the centering mechanism includes a pair of the racks, the racks being disposed in parallel and on both sides of the pinion, and the racks are simultaneously driven to move to extend or retract to both sides when the pinion rotates.

9. The vehicle position adjusting apparatus according to claim 7, wherein the centering mechanism is provided on the lift table, and the centering rod abuts against an inner side of the wheel when extended by the rack to adjust the posture of the vehicle.

10. The vehicle position adjustment apparatus of claim 7, wherein the centering mechanism further comprises a first roller set and a second roller set, the first roller set being rotatably connected to a lift table of a lift mechanism carrying front wheels, and the first roller set being disposed obliquely in a vertical direction to form a recessed area for carrying the front wheels of the vehicle; the second roller group is rotationally connected with a lifting platform of a lifting mechanism bearing the rear wheel; when the centering mandril pushes against the wheel of the vehicle, the wheel moves through the first roller group and the second roller group to adjust the posture of the vehicle.