A vehicle booster

CN224726958UActive Publication Date: 2026-09-08YITUI MECHANICAL EQUIP (SUZHOU) CO LTD
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Patent Information

Application Number
CN202522288908.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-29
Publication Date
2026-09-08
Estimated Expiration
2035-10-29

AI Technical Summary

Technical Problem

[0004]本实用新型的目的在于克服现有技术的不足,适应现实需要,提供一种车辆助推器,以解决当前牵引工装安装位置固定,不便适配不同地铁车辆的技术问题

Benefits of technology

本实用新型通过在安装架侧端等距开设安装孔,并配合连接机构的设计,实现了牵引工装安装位置的灵活调节,无论是通过螺栓螺母连接的第一连接板,还是借助定位件与安装孔配合的第二连接板,都能轻松改变牵引工装的安装高度,精准适配不同型号地铁车辆在牵引连接点高度、水平距离等参数上的差异,无需加装垫片或调整支撑结构等繁琐操作,极大提升了对多种地铁车型的适配能力,调节牵引工装位置时,无需复杂的工具和步骤,对于第一连接机构,只需调节第一连接孔与不同高度安装孔对应并重新安装螺栓螺母即可;第二连接机构通过移动滑动板就能完成定位件与安装孔的配合或分离,实现快速安装与拆卸,这种便捷的操作方式,减少了在适配不同车型时的调整时间,提高了地铁车辆检修、移动等工作的效率,解决当前牵引工装安装位置固定,不便适配不同地铁车辆的问题。

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Abstract

The utility model discloses a kind of vehicle boosters, it is related to rail transit technical field, to solve the technical problem of current traction tool installation position fixed, inconveniently adapt to different subway vehicles, including booster car, connecting mechanism and traction tool, the booster car includes the mounting plate of tail part and the mounting bracket of mounting plate front end setting, the connecting mechanism includes tool connecting portion and booster connecting portion, angle adjusting structure is provided on the tool connecting portion, and the tool connecting portion is rotatably connected with booster connecting portion by angle adjusting structure. The utility model has the advantages that by equidistant mounting hole and connecting mechanism cooperation of mounting bracket, traction tool height can be flexibly adjusted, and the difference of different subway vehicle connection interface is adapted;Connecting mechanism rotating design and limit pin, sliding plate fixed part, realize traction angle flexible adjustment and fixed;Connection is firm, disassembly is convenient, improve the adaptability, operation efficiency and the advantages of security.
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Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and more specifically, to a vehicle booster. Background Technology

[0002] Vehicle boosters are primarily used to assist in the movement of subway vehicles, such as pushing them during maintenance to facilitate the work, or helping them start in special circumstances. This aligns with the goals of intelligent operation and maintenance in rail transit, which involve using various technologies to improve operational efficiency, ensure normal equipment operation, and optimize maintenance processes. It is one of the equipment-related technologies within the intelligent operation and maintenance system for rail transit.

[0003] Vehicle boosters are used by connecting to subway cars via traction fixtures. Currently, the traction fixtures for vehicle boosters are usually installed in fixed positions, making it difficult to adapt to the different connection interface positions of different subway car models. In actual operation and maintenance, subway lines often have multiple car models, and the traction connection points of different models differ significantly in parameters such as height and horizontal distance. Fixed-position traction fixtures require frequent adaptation through auxiliary methods such as adding shims and adjusting the support structure, which is cumbersome and time-consuming. Therefore, we propose a vehicle booster. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a vehicle booster to solve the technical problem that the current traction tool has a fixed installation position and is inconvenient to adapt to different subway vehicles.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a vehicle booster, including a booster vehicle, a connecting mechanism and a traction tool; The booster vehicle includes a mounting plate at the rear and a mounting frame at the front of the mounting plate. The mounting frame has mounting holes equidistantly spaced on its side. The traction fixture is mounted at the rear of the booster vehicle via a connecting mechanism. The connecting mechanism includes a fixture connecting part and a booster connecting part. The fixture connecting part is provided with an angle adjustment structure. The fixture connecting part is rotatably connected to the booster connecting part via the angle adjustment structure. The fixture connecting part is connected to the traction fixture, and the booster connecting part is connected to the mounting frame.

[0006] Preferably, the tooling connection part includes a first limiting plate arranged symmetrically, the first limiting plate having symmetrically opened pin holes, a limiting pin being inserted into the pin holes, and a first fixing plate being provided at the rear end of the first limiting plate, the traction tooling being connected to the connecting mechanism through the first fixing plate.

[0007] Preferably, the booster connecting part includes a first rotating seat and a first connecting plate symmetrically arranged on the first rotating seat. Both the first limiting plate and the first rotating seat are provided with a first rotating hole. A bearing is provided in the first rotating hole of the first rotating seat, and a first limiting shaft is provided in the first rotating hole. The angle adjustment structure is composed of a first limiting plate, a first rotating seat, and a first limiting shaft. A first connecting hole is provided on the first connecting plate. The first connecting plate is located on the outside of the mounting frame. The first connecting plate is connected to the mounting frame by bolts and nuts. The limiting pin is located on the outside of the first connecting plate and contacts the first connecting plate.

[0008] Preferably, the tooling connection part includes a second limiting plate and a second fixing plate disposed at the rear end of the second limiting plate, and the traction tooling is connected to the connection mechanism through the second fixing plate, wherein the second limiting plate is a frame structure.

[0009] Preferably, the booster connecting part includes a second rotating seat and a second connecting plate symmetrically arranged on the second rotating seat. A second rotating hole is provided on both the second limiting plate and the second rotating seat. A bearing is provided in the second rotating hole of the second rotating seat, and a second limiting shaft is provided in the second rotating hole. The angle adjustment structure is composed of the second limiting plate, the second rotating seat, and the second limiting shaft. A second connecting hole is provided on the second connecting plate, and a positioning member is provided in the second connecting hole. Both the positioning member and the second connecting hole are arranged with a larger front and a smaller rear. Both ends of the positioning member are spherical, and the size of the rear part of the positioning member is adapted to the size of the mounting hole.

[0010] Preferably, the booster connecting part further includes a sliding plate slidably mounted on the outer surface of the second connecting plate. The outer surface of the second connecting plate is provided with a limiting groove. The inner wall of the sliding plate is provided with a limiting slider. The limiting slider is slidably disposed in the limiting groove. The inner wall of the sliding plate is provided with a receiving hole adapted to the positioning component. The upper and lower ends of the sliding plate are both provided with positioning parts. The positioning parts are provided with mounting grooves. A spring is provided in the mounting groove. The inner ring of the spring is provided with a damping rod. The end of the spring is provided with a positioning ball. The upper and lower ends of the second connecting plate are both provided with positioning holes adapted to the positioning balls. The end of the sliding plate is bent outward and towards the second limiting plate to provide a fixing part.

[0011] Preferably, the traction fixture is a subway car head or car connecting structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves flexible adjustment of the traction fixture's installation position by equidistantly opening mounting holes on the side of the mounting frame and combining them with the design of the connecting mechanism. Whether it's the first connecting plate connected by bolts and nuts or the second connecting plate that mates with the mounting holes using positioning components, the installation height of the traction fixture can be easily changed. This precisely adapts to the differences in parameters such as the height and horizontal distance of the traction connection point for different types of subway vehicles, eliminating the need for cumbersome operations such as adding shims or adjusting the support structure. This greatly improves the adaptability to various subway vehicle models. When adjusting the position of the traction fixture, no complicated tools or steps are required. For the first connecting mechanism, it is only necessary to adjust the first connecting hole to correspond with the mounting holes of different heights and reinstall the bolts and nuts. For the second connecting mechanism, the positioning component can be engaged or disengaged from the mounting hole by moving the sliding plate, achieving rapid installation and disassembly. This convenient operation method reduces the adjustment time when adapting to different vehicle models, improves the efficiency of subway vehicle maintenance and relocation, and solves the problem of the current traction fixture's fixed installation position, which is inconvenient for adapting to different subway vehicles.

[0013] This invention utilizes a rotating seat design in the connecting mechanism, enabling the traction fixture to rotate around the limiting shaft. During traction, the angle can be flexibly adjusted according to slight vehicle deviations or steering requirements. Angle adjustment is achieved by removing the limiting pin, while insertion restricts the rotation angle. Furthermore, positioning the fixed part outside the second limiting plate limits the angle, and moving the sliding plate away from the second limiting plate allows for angle adjustment. These two angle adjustment methods meet the needs of different working conditions and enhance operational flexibility.

[0014] 3. In the design of the connection mechanism of this utility model, whether it is the bolt and nut connection between the first connecting plate and the mounting bracket, or the cooperation between the positioning component and the mounting hole of the second connecting plate, the stability of the connection between the traction tool and the booster vehicle can be ensured. In particular, in the second connection mechanism, the adaptability of the rear part of the positioning component to the mounting hole, the setting of the positioning component and the second connecting hole being larger at the front and smaller at the back, and the squeezing and fixing of the positioning component by the sliding plate, effectively prevent the positioning component from falling off, ensure the reliability of the connection during the traction process, and provide a safety guarantee for vehicle movement. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of Embodiment 1 of the present utility model; Figure 2 This is a front view structural schematic diagram of the connecting mechanism according to Embodiment 1 of this utility model; Figure 3 This is a disassembled structural diagram of the connection mechanism according to Embodiment 1 of this utility model; Figure 4 This is a front view structural diagram of Embodiment 2 of the present invention; Figure 5This is a front view structural diagram of the connecting mechanism in Embodiment 2 of this utility model; Figure 6 This is a rear view schematic diagram of the connecting mechanism in Embodiment 2 of this utility model; Figure 7 This is a disassembled structural diagram of the connection mechanism in Embodiment 2 of this utility model; Figure 8 This is a schematic diagram of the structure of the second connecting plate of this utility model.

[0016] Explanation of the numbers in the diagram: 101, trolley; 102, mounting plate; 103, mounting bracket; 1031, mounting hole; 104, traction fixture; 105, connecting mechanism; 1051, fixture connecting part; 1052, booster connecting part; 201, first rotating seat; 202, first connecting plate; 2021, first connecting hole; 203, first limiting plate; 204, first fixing plate; 205, first rotating hole; 206, first limiting shaft; 207, pin hole; 208, limiting pin; 301, second rotating seat; 302, ... Two connecting plates; 3021, limiting slide groove; 3022, second connecting hole; 3023, positioning hole; 303, positioning component; 304, second limiting plate; 3041, second rotating hole; 305, second fixing plate; 306, second limiting shaft; 307, sliding plate; 3071, fixing part; 3072, positioning part; 3073, spring; 3074, positioning ball; 3075, storage hole; 3076, limiting slider; 1041, front fixture A; 1042, vehicle fixture without traction structure; 1043, front fixture B. Detailed Implementation

[0017] Example 1: like Figures 1 to 3 As shown, the present invention relates to a vehicle booster, which includes a booster 101, a connecting mechanism 105, and a traction tool 104. The booster 101 includes a mounting plate 102 at the rear and a mounting bracket 103 at the front of the mounting plate 102. The mounting bracket 103 has mounting holes 1031 at equal intervals on its side. The traction fixture 104 is mounted at the rear of the booster 101 through a connecting mechanism 105. The connecting mechanism 105 includes a fixture connecting part 1051 and a booster connecting part 1052. The fixture connecting part 1051 is provided with an angle adjustment structure. The fixture connecting part 1051 is rotatably connected to the booster connecting part 1052 through the angle adjustment structure. The fixture connecting part 1051 is connected to the traction fixture 104, and the booster connecting part 1052 is connected to the mounting bracket 103.

[0018] Specifically, the tooling connection part 1051 includes symmetrically arranged first limiting plates 203, with symmetrically arranged pin holes 207 on the first limiting plates 203. Limiting pins 208 are inserted into the pin holes 207. A first fixing plate 204 is provided at the rear end of the first limiting plate 203. The traction tooling 104 is connected to the connecting mechanism 105 through the first fixing plate 204. The bearing effectively reduces the friction coefficient of the first rotating seat 201 during rotation, ensuring the flexibility and stability of rotation and extending the service life of the components. The first fixing plate 204 provides a stable connection foundation for the installation of the traction tooling 104, ensuring the reliability of the connection between the traction tooling 104 and the connecting mechanism 105.

[0019] Furthermore, the booster connection part 1052 includes a first rotating seat 201 and a first connecting plate 202 symmetrically arranged on the first rotating seat 201. The first limiting plate 203 and the first rotating seat 201 are both provided with a first rotating hole 205. A bearing is provided in the first rotating hole 205 of the first rotating seat 201, and a first limiting shaft 206 is provided in the first rotating hole 205. The angle adjustment structure is composed of the first limiting plate 203, the first rotating seat 201 and the first limiting shaft 206. The first connecting plate 202 is provided with a first connecting hole 2021. The first connecting plate 202 is located outside the mounting frame 103. The first connecting plate 202 is connected to the mounting frame 103 by bolts and nuts. The limiting pin 208 is located outside the first connecting plate 202 and contacts the first connecting plate 202. The symmetrical arrangement of the first connecting plate 202 makes the connection between the connecting mechanism 105 and the mounting bracket 103 more balanced and stable. The bolt and nut connection method is simple and reliable, and easy to disassemble and adjust. The contact between the limit pin 208 and the first connecting plate 202 can accurately limit the rotation angle of the first limit plate 203 and the traction fixture 104 without affecting normal use, thus ensuring the safety of operation.

[0020] In this invention: the traction fixture 104 is mounted on the connecting mechanism 105. The connecting mechanism 105 is located outside the mounting bracket 103 via the first connecting plate 202 and is fixed in place with bolts and nuts. When the installation height needs to be adjusted, the first connecting hole 2021 can be adjusted to correspond with the mounting holes 1031 of different heights, and the installation height of the traction fixture 104 can be easily changed by reinstalling the bolts and nuts to adapt to the height differences of the traction connection points of different subway vehicles. In use, the traction fixture 104 is used to connect subway vehicles requiring assistance, and the assistance is achieved through operation. The trolley 101 pulls and moves the vehicle. During the movement, the limiting pin 208 is inserted into the pin hole 207. The limiting pin 208 can limit the rotation angle of the first limiting plate 203 and the traction fixture 104. When the vehicle being pulled and the traction fixture 104 need to be adjusted in angle, the limiting pin 208 can be pulled out. At this time, the traction fixture 104 can rotate around the first limiting shaft 206. This adjustable angle design allows it to better adapt to the slight deviation or steering requirements that the vehicle may have during the traction process, improving the flexibility and convenience of operation.

[0021] Example 2: like Figures 4 to 8 As shown, in this embodiment, the tooling connection part 1051 includes a second limiting plate 304 and a second fixing plate 305 disposed at the rear end of the second limiting plate 304. The traction tooling 104 is connected to the connecting mechanism 105 through the second fixing plate 305. The second limiting plate 304 has a frame structure. The addition of the bearing also reduces friction during rotation, making the rotation of the second rotating seat 301 smoother. The second fixing plate 305 provides solid support for the installation of the traction tooling 104, ensuring the stability of the connection.

[0022] It is worth noting that the booster connection part 1052 includes a second rotating seat 301 and a second connecting plate 302 symmetrically arranged on the second rotating seat 301. A second rotating hole 3041 is provided on both the second limiting plate 304 and the second rotating seat 301. A bearing is provided in the second rotating hole 3041 of the second rotating seat 301, and a second limiting shaft 306 is provided in the second rotating hole 3041. The angle adjustment structure is composed of the second limiting plate 304, the second rotating seat 301 and the second limiting shaft 306. A second connecting hole 3022 is provided on the second connecting plate 302, and a positioning member 303 is provided in the second connecting hole 3022. Both the positioning member 303 and the second connecting hole 3022 are arranged with the front being larger than the rear. Both ends of the positioning member 303 are spherical. The size of the rear part of the positioning member 303 is adapted to the size of the mounting hole 1031. The symmetrical second connecting plate 302 ensures the balance of the connection. The design of being larger in the front and smaller in the back, as well as the adaptation of the rear part of the positioning member 303 to the mounting hole 1031, allows the positioning member 303 to be tightly embedded in the mounting hole 1031, improving the stability of the connection. The spherical ends reduce the wear of the positioning member 303 during installation and use.

[0023] It is worth mentioning that the booster connecting part 1052 also includes a sliding plate 307 slidably mounted on the outer surface of the second connecting plate 302. The outer surface of the second connecting plate 302 is provided with a limiting groove 3021, and the inner wall of the sliding plate 307 is provided with a limiting slider 3076. The limiting slider 3076 is slidably disposed within the limiting groove 3021. The inner wall of the sliding plate 307 is provided with a receiving hole 3075 adapted to the positioning member 303. The upper end of the sliding plate 307 and... Each of the two plates has a positioning part 3072 at its lower end, with a mounting groove on the positioning part 3072. A spring 3073 is installed in the mounting groove, and a damping rod is installed in the inner ring of the spring 3073. A positioning ball 3074 is installed at the end of the spring 3073. The upper and lower ends of the second connecting plate 302 are provided with positioning holes 3023 that are adapted to the positioning ball 3074. The end of the sliding plate 307 is bent outward and towards the second limiting plate 304, and a fixing part 3071 is provided. The cooperation of the limiting slide groove 3021 and the limiting slider 3076 ensures the stability and accuracy of the sliding of the sliding plate 307 and prevents it from deviating during the sliding process. The spring 3073 and the positioning ball 3074 can effectively fix the position of the sliding plate 307, ensuring that it will not slide arbitrarily during operation. The damping rod can slow down the extension and retraction speed of the spring 3073 and prevent the positioning ball 3074 from frequently jumping in the positioning hole 3023, thereby improving the stability of the fixation.

[0024] It is worth noting that the traction fixture 104 is a connection structure for the subway car head or carriage. The car head fixture A1041 and car head fixture B1043 of the traction fixture 104 are used to connect the car head. When tractioning a carriage without a traction structure, the vehicle fixture 1042 without a traction structure is used in conjunction with the car coupler to achieve traction.

[0025] In this invention: the traction fixture 104 is mounted on the connecting mechanism 105. The connecting mechanism 105 is located outside the mounting frame 103 via the second connecting plate 302, aligning the positioning member 303 with the mounting hole 1031. Then, the sliding plate 307 moves towards the second limiting plate 304. At this time, the front part of the positioning member 303 disengages from the receiving hole 3075, and under the squeezing action of the sliding plate 307, the rear part of the positioning member 303 enters the mounting hole 1031 of the mounting frame 103, thus completing the installation of the traction fixture 104. The rear part of the positioning member 303 aligns with the mounting hole 1031. The adaptability of the positioning component 303 and the front-large-rear-small setting of the second connecting hole 3022 allows the traction fixture 104 to be easily fixed at the mounting hole 1031 at different heights, meeting the requirements of parameters such as the horizontal distance of the traction connection point for different vehicle models. This greatly improves the adaptability to various subway vehicle models. After the traction fixture 104 is installed, the sliding plate 307 is pressed by the spring 3073 to the positioning ball 3074, causing the positioning ball 3074 to enter the positioning hole 3023 and fix the position of the sliding plate 307. Because the sliding plate 307 is installed through a limited sliding installation, the positioning component 303 cannot... The device autonomously returns to the storage hole 3075. Because the second connecting hole 3022 is wider at the front and narrower at the back, it prevents the positioning component 303 from falling off from the rear. Under the action of the positioning component 303, the second connecting plate 302 can be stably connected to the mounting bracket 103. During movement, it connects to the subway vehicle requiring assistance via the traction fixture 104, and pulls it by operating the trolley 101. During this process, the traction fixture 104 can rotate around the second limiting shaft 306. When angle adjustment is not needed, the sliding plate 307 is pushed towards the second limiting plate 304 to fix the sliding plate 307. Part 3071 is located outside the second limiting plate 304. The positioning ball 3074 of the sliding plate 307 moves forward synchronously. The positioning ball 3074 is squeezed into the corresponding positioning hole 3023 to fix the sliding plate 307. The fixing part 3071 is located outside the second limiting plate 304 and can limit the position of the second limiting plate 304. It can prevent the traction tooling 104 from rotating at an angle. When it is necessary to disassemble the connecting mechanism 105, it is only necessary to move the position of the sliding plate 307 so that the receiving hole 3075 corresponds to the position of the positioning part 303. At this time, the connecting mechanism 105 can be directly disassembled and removed.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A vehicle booster, characterized in that, It includes a pusher (101), a connecting mechanism (105), and a traction tool (104); The booster vehicle (101) includes a mounting plate (102) at the rear and a mounting frame (103) at the front end of the mounting plate (102). The mounting frame (103) has mounting holes (1031) at equal intervals on its side. The traction fixture (104) is mounted at the rear of the booster vehicle (101) through a connecting mechanism (105). The connecting mechanism (105) includes a fixture connecting part (1051) and a booster connecting part (1052). The fixture connecting part (1051) is provided with an angle adjustment structure. The fixture connecting part (1051) is rotatably connected to the booster connecting part (1052) through the angle adjustment structure. The fixture connecting part (1051) is connected to the traction fixture (104), and the booster connecting part (1052) is connected to the mounting frame (103).

2. A vehicle booster according to claim 1, characterized in that, The tooling connection part (1051) includes a first limiting plate (203) symmetrically arranged, and a pin hole (207) is symmetrically opened on the first limiting plate (203). A limiting pin (208) is inserted into the pin hole (207). A first fixing plate (204) is provided at the rear end of the first limiting plate (203). The traction tooling (104) is connected to the connecting mechanism (105) through the first fixing plate (204).

3. A vehicle booster according to claim 2, characterized in that, The booster connection part (1052) includes a first rotating seat (201) and a first connecting plate (202) symmetrically arranged on the first rotating seat (201). Both the first limiting plate (203) and the first rotating seat (201) are provided with a first rotating hole (205). A bearing is provided inside the first rotating hole (205) of the first rotating seat (201), and a first limiting shaft (206) is provided inside the first rotating hole (205). The angle adjustment structure is formed by the first limiting plate... (203), a first rotating seat (201) and a first limiting shaft (206) are formed. A first connecting hole (2021) is provided on the first connecting plate (202). The first connecting plate (202) is located on the outside of the mounting bracket (103). The first connecting plate (202) is connected to the mounting bracket (103) by bolts and nuts. The limiting pin (208) is located on the outside of the first connecting plate (202) and the limiting pin (208) is in contact with the first connecting plate (202).

4. A vehicle booster according to claim 1, characterized in that, The tooling connection part (1051) includes a second limiting plate (304) and a second fixing plate (305) disposed at the rear end of the second limiting plate (304). The traction tooling (104) is connected to the connection mechanism (105) through the second fixing plate (305). The second limiting plate (304) is a frame structure.

5. A vehicle booster according to claim 4, characterized in that, The booster connection part (1052) includes a second rotating seat (301) and a second connecting plate (302) symmetrically arranged on the second rotating seat (301). A second rotating hole (3041) is provided on both the second limiting plate (304) and the second rotating seat (301). A bearing is provided in the second rotating hole (3041) of the second rotating seat (301), and a second limiting shaft (306) is provided in the second rotating hole (3041). The angle adjustment structure is formed by the second limiting plate... (304), the second rotating seat (301) and the second limiting shaft (306) are composed of a second connecting plate (302) and a second connecting hole (3022) is provided on the second connecting plate (302). A positioning element (303) is provided in the second connecting hole (3022). The positioning element (303) and the second connecting hole (3022) are both set to be larger in the front and smaller in the back. Both ends of the positioning element (303) are set to be spherical. The size of the rear part of the positioning element (303) is adapted to the size of the mounting hole (1031).

6. A vehicle booster according to claim 5, characterized in that, The booster connection part (1052) further includes a sliding plate (307) slidably mounted on the outer surface of the second connecting plate (302). The outer surface of the second connecting plate (302) is provided with a limiting groove (3021). The inner wall of the sliding plate (307) is provided with a limiting slider (3076). The limiting slider (3076) is slidably disposed in the limiting groove (3021). The inner wall of the sliding plate (307) is provided with a receiving hole (3075) adapted to the positioning member (303). Both the upper and lower ends of the sliding plate (307) are... The second connecting plate (302) is provided with a positioning part (3072), which has an installation groove. A spring (3073) is provided in the installation groove. A damping rod is provided in the inner ring of the spring (3073). A positioning ball (3074) is provided at the end of the spring (3073). The upper and lower ends of the second connecting plate (302) are provided with positioning holes (3023) that are adapted to the positioning ball (3074). The end of the sliding plate (307) is bent outward and towards the second limiting plate (304) and is provided with a fixing part (3071).

7. A vehicle booster according to any one of claims 1-6, characterized in that, The traction fixture (104) is a connection structure between the subway car head or the car body.