An auxiliary device for getting on and off a train set emergency transition coupler
By designing a special auxiliary device for loading and unloading emergency transition couplers on high-speed trains, and utilizing a combination of support structures and mesh panels, the problem of high labor intensity and high safety risks associated with manual operation during emergency rescue was solved. This enabled rapid and safe handling of transition couplers, thereby improving rescue efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU DEPOT OF CHINA RAILWAY CHENGDU BUREAU GRP CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-24
AI Technical Summary
During the emergency rescue operation of the CR200J EMU, the handling of the transition coupler relied on manual operation, which resulted in high labor intensity, high safety risks, and low efficiency, thus affecting the rescue efficiency.
Design a special auxiliary device for boarding and alighting emergency transition couplers of EMU trains, including a first support structure, a second support structure, a self-locking structure and a mesh plate. Through the combined use of these structures, stable support and rapid boarding and alighting functions are provided, reducing manual intervention.
It reduces the intensity of manual labor, improves operational safety and rescue efficiency, avoids scratches on the vehicle body, and adopts a foldable design for easy storage and maintenance. It is suitable for emergency rescue of CR200J EMU trains.
Smart Images

Figure CN224545973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of emergency auxiliary devices for high-speed trains, specifically a special auxiliary device for getting on and off the emergency transition coupler of a high-speed train. Background Technology
[0002] Currently, during rescue operations on CR200J EMUs, the handling of the transition coupler mainly relies on manual operation, which must be completed by the EMU mechanic with the assistance of the rescue driver. However, this process involves high labor intensity for the workers, and is prone to occupational safety accidents and scratches on the train body, especially in emergency rescue scenarios. It is also inefficient and difficult to quickly complete the loading and unloading of the transition coupler, which seriously affects the efficiency of the rescue operation.
[0003] To address this, this solution proposes a dedicated auxiliary device for emergency transition couplers on and off EMU trains, reducing manual intervention, thereby improving rescue efficiency and lowering safety risks. It is applicable to emergency rescue scenarios for CR200J EMU trains. Utility Model Content
[0004] This utility model provides a special auxiliary device for loading and unloading emergency transition couplers on high-speed trains. By using a first support structure, a second support structure, a self-locking structure, a limiting structure, or a mesh plate in combination, the transition coupler can be loaded and unloaded quickly, solving the problems mentioned in the background art, such as easy occupational safety accidents, car body scratches, and low efficiency in emergency rescue scenarios, which seriously affect rescue efficiency.
[0005] This utility model provides the following technical solution:
[0006] A special auxiliary device for boarding and alighting emergency transition couplers on high-speed trains includes: a first support structure with two sets of connecting ends, wherein one end of the first support structure is provided with a limiting structure, and the limiting structure forms a preset angle with the first support structure; and a second support structure with a bearing surface, wherein the second support structure is rotatably connected to the other end of the first support structure through a self-locking structure, and when the self-locking structure is in working state, the plane of the first support structure is parallel to the plane of the bearing surface.
[0007] As a preferred technical solution of this utility model, the self-locking structure includes a self-locking component and a connecting component. The self-locking component is fixedly connected to the connecting end of the first support structure, and the connecting component is fixedly connected to the second support structure. The self-locking component and the connecting component are connected by a rotating shaft. When the self-locking component abuts against the bearing surface, the self-locking structure is in working condition.
[0008] As a preferred embodiment of the present invention, the first support structure includes two sets of first support tubes, wherein a first limiting rod is fixedly connected between the two sets of first support tubes, and the self-locking component is fixedly connected to the other end of the first support tube.
[0009] As a preferred embodiment of the present invention, the second support structure includes two sets of second support tubes, wherein a second limiting rod is fixedly connected between the two sets of second support tubes, and the connecting member is fixedly connected to the end of the second support tube.
[0010] As a preferred technical solution of this utility model, the first support structure and the second support structure are provided with mesh plates.
[0011] As a preferred technical solution of this utility model, the preset angle range between the limiting structure and the first supporting structure is 105°-140°.
[0012] Compared with the prior art, this utility model provides a special auxiliary device for boarding and alighting emergency transition couplers on high-speed trains, which has the following beneficial effects:
[0013] 1. In the special auxiliary device for getting on and off the emergency transition coupler of this EMU, the use of a mesh plate can prevent the transition coupler from directly contacting the ground and causing damage, thereby reducing the intensity of manual labor and improving operational efficiency and safety. The device adopts a folding design, which is convenient for storage and rapid deployment on the EMU. It also adopts a modular design, which is convenient for maintenance and replacement of parts.
[0014] 2. The auxiliary device for loading and unloading the emergency transition coupler of this EMU uses lightweight materials to ensure a moderate overall weight, making it easy for one or two people to operate. At the same time, it ensures the stability of the equipment during transportation and use, avoiding accidental deployment or shaking, thereby enabling the rapid loading and unloading of the transition coupler and improving rescue efficiency.
[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model adopts a folding design, which can quickly complete the loading and unloading of the transfer coupler and improve rescue efficiency. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
[0017] Figure 1 This is a schematic diagram of the present invention. Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the present invention. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the folding of this utility model. Figure 1 ;
[0020] Figure 4 This is a schematic diagram of the folding of this utility model. Figure 2 .
[0021] In the figure: 100, first support structure; 101, first support tube; 102, first limiting rod; 200, second support structure; 201, second support tube; 202, second limiting rod; 300, self-locking structure; 301, self-locking component; 302, connecting component; 303, rotating shaft; 400, mesh plate; 500, limiting structure. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] This utility model provides a special auxiliary device for boarding and alighting emergency transition couplers on high-speed trains. Its basic components mainly include two sets of first support pipes 101 and two sets of second support pipes 201. Four sets of equidistant first limiting rods 102 are fixedly connected between the two sets of first support pipes 101. The two sets of first support pipes 101 and the first limiting rods 102 combine to form a first support structure 100. Similarly, four sets of equidistant second limiting rods 202 are fixedly connected between the two sets of second support pipes 201. The two sets of second support pipes 201 and the second limiting rods 202 combine to form a second support structure. Structure 200 addresses the issue that during rescue operations on the CR200J EMU, the handling of the transition coupler relies primarily on manual labor, requiring the EMU mechanic to assist the rescue driver. However, this process is labor-intensive for workers, particularly in emergency rescue scenarios, increasing the risk of work-related accidents, scratches on the train body, and low efficiency. It also makes it difficult to quickly load and unload the transition coupler, severely impacting rescue efficiency. Structure 200 addresses this by combining and connecting the first support structure 100 and the second support structure 200 to provide auxiliary support for loading and unloading the transition coupler.
[0024] Example:
[0025] Reference Figures 1-4An auxiliary device for boarding and alighting emergency transition couplers of high-speed trains is provided. Two sets of connecting ends are provided on the first support tube 101. A self-locking component 301 is provided on one of the connecting ends. A connecting component 302 is fixedly connected to one end of the second support tube 201. Through holes are provided on both the self-locking component 301 and the connecting component 302. A rotating shaft 303 passes through the through holes and is connected to the self-locking component 301 and the connecting component 302, thereby forming a self-locking structure 300. The middle part of the self-locking component 301 is hollow. When the first support tube 101 and the second support tube 201 are in working state, the inner wall of the self-locking component 301 abuts against the bearing surface on the top surface of the second support tube 201, thereby allowing the second support tube 201 to enter the hollow part of the self-locking component 301, so that it forms a self-locking state. The first support tube 101 and the second support tube 201 are in a ladder shape. Stainless steel mesh plates 400 are provided on the first limit rod 102 and the second limit rod 202.
[0026] Specifically, a limiting structure 500 is also provided on the other connecting end of the first support pipe 101, which is used to place on the edge of the train door frame. The preset angle range between the limiting structure 500 and the first support pipe 101 is 125°, so as to form a stable support angle between the train body and the device, enhancing the stability and safety of the auxiliary device during use. The limiting structure 500 is made of stainless steel to ensure that it is not easily deformed or damaged during long-term use and load-bearing. In addition, when the operator needs to use the auxiliary device, he only needs to unfold the first support pipe 101 and the second support pipe 201 into a ladder shape and ensure that the limiting structure 500 fits against the edge of the train door frame to form a passage for the loading and unloading of the transition coupler, thereby quickly completing the loading and unloading of the transition coupler and improving rescue efficiency.
[0027] Furthermore, the dimensions of the first support tube 101 and the second support tube 201 are 38*25*1mm, the dimensions of the first limiting rod 102 and the second limiting rod 202 are 10*20*1mm, and the thickness of the mesh plate 400 is 3mm. This dimensional design ensures both the overall strength of the auxiliary device and its portability, making it easy for operators to carry. In addition, the uniform wall thickness of the first support tube 101 and the second support tube 201 enhances their load-bearing capacity, ensuring the safety of operators when using the device for loading and unloading the car with the coupler. Simultaneously, the reasonable dimensional design of the first limiting rod 102 and the second limiting rod 202 allows the mesh plate 400 to be securely connected between the first support tube 101 and the second support tube 201, forming a stable working platform. The moderate thickness of the mesh plate 400 provides sufficient support without increasing weight due to excessive thickness, thus ensuring the practicality and portability of the entire auxiliary device.
[0028] The length of the first support tube 101 is 1240mm, the length of the limiting structure 500 is 200mm, and the angle between the limiting structure 500 and the first support tube 101 is 125°. The length of the second support tube 201 is 1210mm. When the device is in operation, the end of the second support tube 201 is on the ground, the limiting structure 500 is installed on the train body, the length of the limiting structure 500 from the ground is 1990mm, the distance from the end of the second support tube 201 on the ground to the angular distance between the limiting structure 500 and the first support tube 101 is 1390mm, and the length of the first limiting rod 102 and the second limiting rod 202 is 600mm. When the device is in a folded state, its overall length is 1355mm and its width is 600mm, which facilitates subsequent storage.
[0029] In the above solution, the mesh plate 400 facilitates the movement of the transition coupler by operators, i.e., the train mechanics, placing it on its surface. First, a rope is attached to the transition coupler; then, the operator slowly releases the rope, allowing it to move across the mesh plate 400 and finally gently land on the ground, thus preventing direct contact between the coupler and the ground and potential damage. Furthermore, it significantly reduces manual labor intensity, improves operational efficiency and safety. The device features a foldable design for easy storage and rapid deployment on the trainset, and a modular design for easy maintenance and parts replacement. Simultaneously, the use of lightweight materials ensures a moderate overall weight, facilitating single or double-person operation, while also ensuring the stability of the equipment during transportation and use, preventing accidental unfolding or shaking.
[0030] Components not described in detail in this article are existing technologies.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A special auxiliary device for boarding and alighting emergency transition couplers on high-speed trains, characterized in that, include: The first support structure (100) has two sets of connecting ends. Among them, a limiting structure (500) is provided at one end of the first support structure (100), and a preset angle is formed between the limiting structure (500) and the first support structure (100); The second support structure (200) has a bearing surface. The second support structure (200) is rotatably connected to the other end of the first support structure (100) through a self-locking structure (300). When the self-locking structure (300) is in working condition, the plane of the first support structure (100) is parallel to the plane of the bearing surface.
2. The auxiliary device for boarding and alighting emergency transition couplers on a high-speed train according to claim 1, characterized in that, The self-locking structure (300) includes a self-locking component (301) and a connecting component (302). The self-locking component (301) is fixedly connected to the connecting end of the first support structure (100), and the connecting component (302) is fixedly connected to the second support structure (200). The self-locking component (301) and the connecting component (302) are connected by a rotating shaft (303). When the self-locking component (301) abuts against the bearing surface, the self-locking structure (300) is in working condition.
3. The auxiliary device for boarding and alighting emergency transition couplers on a high-speed train according to claim 2, characterized in that, The first support structure (100) includes two sets of first support tubes (101). Among them, a first limiting rod (102) is fixedly connected between the two sets of first support tubes (101), and the self-locking member (301) is fixedly connected to the other end of the first support tube (101).
4. The auxiliary device for boarding and alighting emergency transition couplers on a high-speed train according to claim 2, characterized in that, The second support structure (200) includes two sets of second support tubes (201). Among them, a second limiting rod (202) is fixedly connected between the two sets of second support tubes (201), and the connector (302) is fixedly connected to the end of the second support tube (201).
5. The auxiliary device for boarding and alighting emergency transition couplers on a high-speed train according to claim 1, characterized in that, The first support structure (100) and the second support structure (200) are provided with mesh panels (400).
6. The auxiliary device for boarding and alighting emergency transition couplers on a high-speed train according to claim 1, characterized in that, The preset angle range between the limiting structure (500) and the first support structure (100) is 105°-140°.