Car body collision head connecting device

By designing a car body collision connection device, the automatic connection between the electric locomotive and the mine car is realized by using a drive device and a detector, which solves the problems of cumbersome and safety hazards in the existing technology and improves the connection efficiency and safety.

CN224170943UActive Publication Date: 2026-04-28HUNAN BAOSHAN NONFERROUS METALS & MINERALS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUNAN BAOSHAN NONFERROUS METALS & MINERALS
Filing Date
2025-05-07
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

In the existing technology, the connection operation between the electric locomotive and the mine car is cumbersome and poses safety hazards, especially when the pin is removed from the tipping mine car, which can easily cause accidents.

Method used

Design a vehicle body collision connection device that uses a drive device to automatically insert and release a pin rod into and out of the collision head through hole. Combined with a detector to detect the vehicle body position, it realizes automatic hooking and unhooking operations. The movement of the pin rod is precisely controlled by a controller.

Benefits of technology

It improves the efficiency and safety of vehicle body connection, reduces the tediousness of manual operation, and lowers the risk of safety accidents.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a vehicle body collision head connecting device, which is arranged on a collision head of a first vehicle body, and comprises a bottom plate, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod, a first connecting rod, a second connecting rod, a first connecting rod and a second connecting rod, the bottom plate is arranged on the collision head of the first vehicle body, and an inserting hole is formed in the bottom plate; the driving device is arranged on the bottom plate, and a connecting assembly is arranged at the output end of the driving device; the bolt rod penetrates through the through hole and is connected with the connecting assembly; the driving device can drive the bolt rod to be inserted into and separated from the through hole of the collision head, automatic hooking and unhooking between the collision head of the first vehicle body and the collision head of the second vehicle body can be achieved, and the position of the second vehicle body can be detected through the arrangement of the first detector and the second detector; and after a proper position is reached, the first vehicle body and the second vehicle body are collided for hooking, and the second detector detects the position of the inserting rod, so that the hooking safety is improved.
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Description

Technical Field

[0001] This application belongs to the field of mining transportation technology, specifically relating to a vehicle body collision connection device. Background Technology

[0002] In mine rail transport, locomotives serve as the primary traction equipment, while mine cars undertake the transport tasks. Based on the different unloading methods, mine cars are classified as bottom-discharge, side-discharge, and tipping types. Currently, the connection methods between locomotives and mine cars, depending on the unloading method, mainly include James hooks, pin-type fixed chain plate connectors, pin-type ring chain connections, and pin-type rotatable connections. The main components of the pin-type connection are the pin and the connector. The connector is used to connect the locomotive and the mine car, while the pin is the device that fixes the connector to the locomotive or mine car. Both ends of the mine car and the locomotive are equipped with bumpers, each with a through hole in the middle. The connector also has a through hole on each side. When the connector is inserted into the bumper, the holes of both coincide, at which point inserting the pin completes the connection between the bumper and the connector. Removing the pin separates them.

[0003] When using tipper mine cars for transportation, it is often necessary to detach the leading locomotive from the ore transport train and reattach it to the rear of the train, or unload it using other methods and then reassemble it. This process involves the operation of attaching and detaching pins. Currently, the pin-attaching and detaching operation is done manually by workers. Workers must first drive the locomotive close to the mine car, ensure the connector is inserted into the stop, adjust the position to align the holes, and then insert the pin to complete the connection. The manual hooking and unhooking operation is not only cumbersome but also prone to safety accidents. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] To address the aforementioned problems, this application provides a vehicle body collision head connection device, which is disposed on the collision head of a first vehicle body and includes:

[0006] A base plate is disposed on the bumper of the first vehicle body, and a plug-in hole is provided on the base plate;

[0007] A driving device is mounted on the base plate, and a connecting component is provided on the output end of the driving device;

[0008] A pin rod passes through the through hole and is connected to the connecting assembly. The driving device drives the pin rod through the connecting assembly to extend into the bumper through hole of the second vehicle body.

[0009] Optionally, the pin includes:

[0010] A sleeve, the first end of which is connected to the connecting assembly, and the second end of which is located above the base plate;

[0011] A rod body, wherein the rod body is slidably connected to the second end of the sleeve;

[0012] A limiting member is provided on the sleeve to fix the rod body.

[0013] Optionally, the sleeve is provided with a plurality of first fixing holes spaced apart, the rod is provided with a plurality of second fixing holes, and the limiting member passes through the first fixing holes and the second fixing holes.

[0014] Optionally, the connection component includes:

[0015] A crossbar, which is disposed on the output end of the drive device;

[0016] A connecting frame is disposed on the first end of the sleeve;

[0017] A fixing plate, which passes through the connecting frame;

[0018] A connecting plate, the first end of which is disposed on the crossbar, and the second end of which is rotatably connected to the fixing plate.

[0019] Optionally, it also includes a housing, which is disposed on the base plate and located outside the drive device, connecting assembly and pin rod.

[0020] Optionally, a first detector is provided on the box body, which is used to detect the position of the second vehicle body.

[0021] Optionally, a limit ring is provided at the second end of the sleeve.

[0022] Optionally, a second detector is provided on the base plate. The second detector is located on the outside of the box and is used to detect the position of the limiting ring.

[0023] Optionally, it also includes a controller, which is electrically connected to the drive device, the first detector, and the second detector.

[0024] Optionally, the driving device is an electric actuator.

[0025] Beneficial effects

[0026] The vehicle body collision connection device provided in the embodiments of this utility model can drive the pin rod to insert and disengage from the through hole of the collision head through the driving device, so as to realize the automatic hooking and unhooking between the first vehicle body and the second vehicle body collision head. Through the setting of the first detector and the second detector, the position of the second vehicle body can be detected. After reaching the appropriate position, the first vehicle body and the second vehicle body collision head are hooked together. The second detector detects the position of the pin rod, thereby improving the safety of the hooking. Attached Figure Description

[0027] Figure 1 This is a front view structural diagram of the vehicle body collision connection device of this utility model;

[0028] Figure 2 This is a cross-sectional view of the vehicle body collision connection device of this utility model;

[0029] Figure 3 This is a structural diagram of the connecting components of the vehicle body collision connection device of this utility model.

[0030] The reference numerals in the attached figures are as follows:

[0031] 1. Base plate; 2. Drive unit; 3. Connecting assembly; 31. Crossbar; 32. Connecting frame; 33. Fixing plate; 34. Connecting plate; 4. Pin rod; 41. Sleeve; 42. Rod body; 43. Limiting component; 5. Box body; 6. First detector; 7. Limiting ring; 8. Second detector. Detailed Implementation

[0032] In the description of this application, it should 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] See also Figure 1-3 As shown, according to an embodiment of this application, a vehicle body collision head connecting device is provided. The vehicle body collision head connecting device is disposed on the collision head of a first vehicle body and includes:

[0037] A base plate 1 is disposed on the bumper of the first vehicle body, and a plug-in hole is provided on the base plate 1;

[0038] A driving device 2 is mounted on the base plate 1, and a connecting component 3 is provided on the output end of the driving device 2.

[0039] The pin 4 passes through the through hole and is connected to the connecting assembly 3. The driving device 2 drives the pin 4 through the connecting assembly 3 to extend into the bumper through hole of the second vehicle body.

[0040] Specifically, a base plate 1 is installed on the bumper of the first vehicle body, and the insertion hole on it provides a channel for the movement of the pin 4. A drive device 2, installed on the base plate 1, is the power source for the movement of the pin 4, and its output end is connected to the pin 4 via a connecting assembly 3. The top of the pin 4 passes through the insertion hole on the base plate 1 and connects to the connecting assembly 3. When the first and second vehicle bodies need to be connected, the drive device 2 drives the pin 4 downwards through the connecting assembly 3, causing it to pass through the bumper hole of the first vehicle body and extend into the bumper hole of the second vehicle body, thus hooking the two vehicles together. During the hooking process, when it is necessary to unhook, the drive device 2 moves in the opposite direction, causing the pin 4 to disengage from the bumper hole of the second vehicle body, thus separating the first and second vehicle bodies. The connection between the first and second vehicle bodies is achieved by the drive device 2 driving the pin 4, realizing automatic hooking and unhooking operations. This is convenient to use, requires no manual intervention, and greatly improves the efficiency and safety of vehicle body connection.

[0041] The drive device 2 can be an electric push rod, a cylinder, or a hydraulic rod, depending on the specific application and the required driving force. Taking an electric push rod as an example, it offers advantages such as high control precision and fast response. Upon receiving a control signal, the motor inside the electric push rod drives the screw to rotate, causing the push rod to extend or retract, thereby driving the connecting assembly 3 and the pin 4 to perform corresponding linear movements. The power output of the drive device 2 is stable and reliable, ensuring that the pin 4 accurately inserts into or disengages from the contact hole of the second vehicle body, enabling the hooking and unhooking operations of the first and second vehicle bodies.

[0042] The pin 4 includes:

[0043] Sleeve 41, the first end of which is connected to the connecting assembly 3, and the second end of which is located above the base plate 1;

[0044] Rod 42, which is slidably connected to the second end of sleeve 41;

[0045] A limiting member 43 is disposed on the sleeve 41 and is used to fix the rod 42.

[0046] Specifically, the pin 4 includes a sleeve 41, a rod 42, and a limiting member 43. The first end of the sleeve 41 is connected to the connecting assembly 3 to ensure effective reception of the power transmitted by the drive device 2, stably transmitting the driving force of the drive device 2 to the rod 42, allowing the rod 42 to smoothly complete the insertion and disengagement actions of the second vehicle body bumper through hole. The second end of the sleeve 41 is located above the base plate 1 and is slidably connected to the rod 42, allowing the length of the rod 42 to be adjusted according to usage requirements to better adapt to different connection needs. The limiting member 43 is set on the sleeve 41, and its main function is to fix the rod 42. When the rod 42 is adjusted to a suitable length, the limiting member 43 can firmly lock the rod 42 on the sleeve 41, preventing the rod 42 from sliding during connection and separation, thus affecting the connection effect.

[0047] The limiting component 43 can take various forms, commonly including bolt-nut type, snap-fit ​​type, or pin type. Taking the bolt-nut type limiting component 43 as an example, after the rod 42 is adjusted to the desired position, tightening the bolt will cause the end of the bolt to press tightly against the surface of the rod 42, fixing the rod 42 inside the sleeve 41 through friction. This fixing method is simple to operate and has high stability.

[0048] The sleeve 41 is provided with a plurality of first fixing holes spaced apart, and the rod 42 is provided with a plurality of second fixing holes. The limiting member 43 passes through the first fixing holes and the second fixing holes.

[0049] Specifically, the several first fixing holes spaced apart on the sleeve 41, the several second fixing holes opened on the rod 42, and the corresponding limiting member 43 form a precise and stable length adjustment and fixing structure, which greatly improves the adaptability and reliability of the pin rod 4 in different vehicle body connection scenarios.

[0050] The first fixing holes are spaced apart on the sleeve 41. By setting the intervals appropriately, the rod 42 can be adjusted in multiple lengths within the sleeve 41 to precisely fit various vehicle bodies. For example, in connection scenarios involving small vehicles, where the contact distance is small, only a short extension of the rod 42 may be needed. In this case, the first fixing hole near the front end of the sleeve 41 can be matched with the corresponding second fixing hole on the rod 42. However, for large trucks or special engineering vehicles, where the contact distance is larger, the first fixing hole farther from the rear end of the sleeve 41 can be selected, allowing the rod 42 to extend a longer length to complete the connection.

[0051] The second fixing hole on the rod 42 corresponds to the first fixing hole on the sleeve 41. The second fixing holes are evenly distributed along the length of the rod 42, ensuring that no matter how far the rod 42 extends into the sleeve 41, a corresponding first fixing hole can be found, achieving precise positioning and fixation. When the length of the pin 4 needs to be adjusted, the operator only needs to slide the rod 42 into the sleeve 41 to the appropriate position, aligning the corresponding first and second fixing holes, and then pass the limiting member 43 through these two aligned holes to complete the fixation of the rod 42.

[0052] The connection component 3 includes:

[0053] A crossbar 31 is provided on the output end of the drive device 2;

[0054] Connecting frame 32, the connecting frame 32 is disposed on the first end of the sleeve 41;

[0055] A fixing plate 33 is inserted through the connecting frame 32;

[0056] A connecting plate 34, the first end of which is disposed on the crossbar 31, and the second end of which is rotatably connected to the fixing plate 33.

[0057] Specifically, the connecting component 3 includes a crossbar 31, a connecting frame 32, a fixing plate 33, and a connecting plate 34. The crossbar 31 is located at the output end of the driving device 2. The power generated by the driving device 2 first acts on the crossbar 31, and then is transmitted to the sleeve 41 through the connecting plate 34, the fixing plate 33, and the connecting frame 32 in sequence, thereby driving the sleeve 41 to move up and down, and then driving the rod 42 to perform hook and unhook operations on the collision between the first vehicle body and the second vehicle body.

[0058] There are two crossbars 31 and two drive devices 2. Each drive device 2 has a crossbar 31 installed on its output end. The crossbar 31 is usually connected to the output end of the drive device 2 by welding, bolting or other secure methods to ensure the efficiency and stability of power transmission.

[0059] The first end of the connecting plate 34 is connected to the crossbar 31 by screws, and the second end is rotatably connected to the fixing plate 33. When the driving device 2 drives the crossbar 31 to move, if the driving height of the two driving devices 2 is different, the connecting plate 34 can adjust the angle according to the actual situation, so as to transmit the power to the pin 4 more smoothly, so as not to affect the efficiency of power transmission.

[0060] The connecting frame 32 is located at the first end of the sleeve 41 and is fixedly connected to the sleeve 41. The fixing plate 33 passes through its interior. By setting the fixing plate 33 inside the connecting frame 32, the connecting frame 32 can move laterally on the fixing plate 33 during operation. This allows for fine-tuning of the lateral position when the rod 42 is inserted into the collision between the first and second vehicle bodies, thus improving its applicability.

[0061] It also includes a housing 5, which is disposed on the base plate 1 and located outside the drive device 2, the connecting component 3 and the pin rod 4.

[0062] Specifically, the housing 5 is mounted on the base plate 1, enclosing the drive unit 2, connecting assembly 3, and pin 4. Its function is to reduce interference from external environmental factors. The housing 5 effectively blocks dust intrusion, preventing dust accumulation on the motor of the drive unit 2, the moving parts of the connecting assembly 3, and the surface of the pin 4, thus preventing wear, short circuits, and other problems caused by dust and extending the service life of each component. Simultaneously, the housing 5 also effectively blocks potentially splashing water vapor, preventing rust and corrosion of metal parts and ensuring normal operation of the device. Furthermore, the housing 5 significantly reduces the risk of accidental contact with internal moving parts. When the drive unit 2 is working, its output drives the crossbar 31, and the connecting assembly 3 operates accordingly. The pin 4 is also dynamic during insertion and removal. Without the protection of the housing 5, accidental contact with these moving parts while moving around the vehicle could easily cause personal injury. The housing 5 isolates these hazardous areas from the outside world, ensuring the safety of surrounding personnel.

[0063] The box 5 is equipped with a first detector 6, which is used to detect the position of the second vehicle body.

[0064] Specifically, during the vehicle body collision connection, a first detector 6 is installed on the housing 5. The first detector 6 can continuously monitor the position information of the second vehicle body. Once the second vehicle body enters its detection range, it immediately converts the position information of the second vehicle body into an electrical signal and transmits it to the connected control system. The control system determines whether the second vehicle body has reached a suitable hooking position based on this real-time position data. When the second vehicle body reaches the preset optimal hooking position, the control system issues a command to trigger the drive device 2 to start working. The drive device 2 then drives the pin rod 4 to move through the connecting component 3, completing the hooking operation with the second vehicle body. At the same time, after the first vehicle body has completed the hooking operation with the second vehicle body, during the movement of the first vehicle body and the second vehicle body, the first detector 6 can also confirm whether the second vehicle body has completed the hooking operation with the first vehicle body. If the hooking operation has not been completed, the first detector 6 will detect that the distance between the second vehicle body and the first vehicle body is getting farther and farther during the movement of the first vehicle body.

[0065] The first detector 6 typically employs one or two of the following: a laser sensor, an ultrasonic sensor, or an infrared sensor. Taking a laser sensor as an example, its working principle involves emitting a laser beam and measuring the time it takes for the laser beam to travel from emission to reflection after encountering the second vehicle body. By utilizing the relationship between the speed of light and time, the distance between the second and first vehicle bodies can be accurately calculated.

[0066] A limit ring 7 is provided at the second end of the sleeve 41.

[0067] A second detector 8 is provided on the base plate 1. The second detector 8 is located outside the box 5 and is used to detect the position of the limiting ring 7.

[0068] Specifically, in the vehicle body collision connection device, the limiting ring 7 at the second end of the sleeve 41 works in conjunction with the second detector 8 on the base plate 1, providing a more reliable guarantee for the accurate movement of the pin rod 4 and the safety of the vehicle body connection.

[0069] The limiting ring 7 is located at the second end of the sleeve 41. The limiting ring 7 mainly serves to limit the sliding range of the rod 42, preventing the rod 42 from sliding out or coming out of the sleeve 41 excessively during the sliding process, and ensuring the integrity and stability of the pin rod 4 structure.

[0070] The second detector 8 is mounted on the base plate 1 and located outside the housing 5, specifically for detecting the position of the limiting ring 7. The second detector 8 can also employ various types of sensors, such as proximity sensors or photoelectric sensors. Taking a proximity sensor as an example, it determines the position of the limiting ring 7 by detecting changes in the distance between itself and the limiting ring 7. When the pin rod 4 moves under the drive of the driving device 2, the limiting ring 7 moves together with the sleeve 41 and the rod 42, and the second detector 8 continuously monitors the positional changes of the limiting ring 7.

[0071] During the vehicle body connection process, when the drive unit 2 moves the pin 4 downwards to prepare for insertion into the contact hole of the second vehicle body, the second detector 8 can monitor the position of the limiting ring 7 laterally in real time. When the limiting ring 7 reaches the range set by the second detector 8, it indicates that the pin 4 has been accurately inserted to the appropriate depth. At this time, the second detector 8 will transmit the detected signal to the control system. The control system determines that the insertion action of the pin 4 has been completed based on this signal. The setting of the second detector 8 also enhances the safety of the entire connection device. If an abnormality occurs during the movement of the pin 4, such as the movement position of the pin 4 not matching the expectation due to component failure, the second detector 8 can detect the abnormal change in the position of the limiting ring 7 in a timely manner and feed the signal back to the control system. The control system can quickly take measures, such as stopping the operation of the drive unit 2 and issuing an alarm signal, to avoid safety accidents caused by improper positioning of the pin 4.

[0072] The controller is electrically connected to the drive device 2, the first detector 6, and the second detector 8.

[0073] Specifically, the control system is a controller electrically connected to the drive unit 2. Upon receiving signals from the first detector 6 and the second detector 8, the controller quickly analyzes and processes them according to a preset program and algorithm. For example, when the first detector 6 detects that the second vehicle body has entered a suitable connection range, the controller immediately sends a start command to the drive unit 2. The motor of the drive unit 2 then starts running, driving the pin rod 4 to begin the insertion action via the connecting component 3. During the movement of the pin rod 4, if the second detector 8 reports that the limit ring 7 has reached the predetermined position, the controller will immediately issue a command to stop the drive unit 2, ensuring that the pin rod 4 is accurately in place and avoiding over-insertion or under-insertion. When a hook-off operation is required, the controller can also precisely control the drive unit 2 to run in reverse, driving the pin rod 4 to smoothly exit from the contact hole of the second vehicle body.

[0074] The controller is electrically connected to the first detector 6, which continuously monitors the position information of the second vehicle body and transmits this data to the controller in real time. Based on this data, the controller constantly determines the relative positional relationship between the second and first vehicle bodies, thereby accurately determining the optimal time to activate the drive device 2 for hook-up operation. This process greatly improves the efficiency of vehicle body connection, reduces unnecessary waiting time, and significantly enhances the smoothness of work processes in logistics transportation, industrial production, and other fields.

[0075] The controller is connected to the second detector 8, which detects the position of the limit ring 7, thereby indirectly controlling the movement of the pin 4. If the movement of the pin 4 becomes abnormal, such as deviating from the preset trajectory or failing to reach the designated position as expected, the second detector 8 will quickly transmit the abnormal signal to the controller. Upon receiving the signal, the controller will immediately take emergency measures, such as immediately stopping the operation of the drive unit 2 and issuing an alarm to the operator, indicating a malfunction requiring inspection and repair. This mechanism effectively avoids problems such as vehicle connection failure, equipment damage, or even safety accidents that may be caused by abnormal movement of the pin 4.

[0076] The drive device 2 is an electric push rod.

[0077] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A vehicle body collision head connecting device, wherein the vehicle body collision head connecting device is disposed on the collision head of a first vehicle body, characterized in that, include: A base plate (1) is provided on the bumper of the first vehicle body, and a plug hole is provided on the base plate (1); A driving device (2) is mounted on the base plate (1), and a connecting component (3) is provided on the output end of the driving device (2); The pin (4) passes through the insertion hole and is connected to the connecting assembly (3). The driving device (2) drives the pin (4) through the connecting assembly (3) to extend into the bumper through hole of the second vehicle body through the bumper through hole of the first vehicle body.

2. The vehicle body collision connection device according to claim 1, characterized in that, The pin (4) includes: Sleeve (41), the first end of which is connected to the connecting assembly (3), and the second end of which is located above the base plate (1); Rod body (42), the rod body (42) is slidably connected to the second end of the sleeve (41); A limiting member (43) is provided on the sleeve (41) for fixing the rod (42).

3. The vehicle body collision connection device according to claim 2, characterized in that, The sleeve (41) is provided with a plurality of first fixing holes spaced apart, and the rod (42) is provided with a plurality of second fixing holes. The limiting member (43) passes through the first fixing holes and the second fixing holes.

4. The vehicle body collision connection device according to claim 3, characterized in that, The connection component (3) includes: A crossbar (31) is provided on the output end of the drive device (2); A connecting frame (32) is disposed on the first end of the sleeve (41); A fixing plate (33) is inserted into the connecting frame (32); A connecting plate (34) is provided at its first end on the crossbar (31), and at its second end is rotatably connected to the fixing plate (33).

5. The vehicle body collision connection device according to claim 4, characterized in that, It also includes a housing (5), which is disposed on the base plate (1) and located outside the drive device (2), the connecting assembly (3) and the pin rod (4).

6. The vehicle body collision connection device according to claim 5, characterized in that, The box (5) is provided with a first detector (6), which is used to detect the position of the second vehicle body.

7. The vehicle body collision connection device according to claim 6, characterized in that, A limit ring (7) is provided at the second end of the sleeve (41).

8. The vehicle body collision connection device according to claim 7, characterized in that, A second detector (8) is provided on the base plate (1). The second detector (8) is located outside the box (5) and is used to detect the position of the limiting ring (7).

9. The vehicle body collision connection device according to claim 8, characterized in that, It also includes a controller, which is electrically connected to the drive device (2), the first detector (6) and the second detector (8).

10. The vehicle body collision connection device according to claim 9, characterized in that, The drive device (2) is an electric push rod.