Bogie traction device

By adopting a sliding connection and polyurethane material design in the bogie traction device, the problem of cumbersome disassembly of the existing device has been solved, achieving stable transmission of traction force and rapid disassembly, thus improving locomotive maintenance efficiency.

CN224361164UActive Publication Date: 2026-06-16GUANGZHOU LOCOMOTIVE MAINTENANCE SECTION OF CHINA RAILWAY GUANGZHOU BUREAU GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU LOCOMOTIVE MAINTENANCE SECTION OF CHINA RAILWAY GUANGZHOU BUREAU GRP CO LTD
Filing Date
2025-09-02
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The existing bogie traction device has a complex structure, which makes the disassembly process cumbersome, prolongs maintenance time, and reduces usage efficiency.

Method used

The traction rod design, which uses a sliding connection and incorporates a butterfly washer, hexagonal head bolt, and spherical bearing, ensures stable transmission of traction force. The use of polyurethane material enhances stability and detachability, reducing the difficulty of disassembly.

Benefits of technology

It achieves stable transmission of traction force, improves the stability and disassembly efficiency of the device, reduces the risk of component damage, and improves maintenance efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of locomotive frame traction device, disclose a bogie traction device, including the traction rod two, the left end sliding joint of traction rod two has the traction rod one, the outer wall right side of traction rod one is provided with the butterfly gasket, the right side of butterfly gasket is provided with the end cap, the right end all screw thread connection of end cap has the hexagonal head bolt all around, the right end of traction rod two is engaged with the joint bearing and connects, the outer wall left side screw thread connection of joint bearing has the hexagon nut, the right end fixed connection of joint bearing has the bogie lock hook. In the utility model, through in the working principle aspect, the bogie lock hook is the key component of transmission traction, the pin shaft is through the bogie lock hook and the traction rod two, can quickly disassemble each component, reduced the time and manpower cost needed for disassembly, improved the work efficiency, also reduced the risk of damaging the component because of the difficulty of disassembly.
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Description

Technical Field

[0001] This utility model relates to the technical field of locomotive frame traction devices, and in particular to a bogie traction device. Background Technology

[0002] With the rapid development of the railway transportation industry, the requirements for locomotive operating efficiency, reliability, and ease of maintenance have gradually exposed many challenges for locomotive bogie traction devices. In terms of connection methods, some traditional traction devices adopt complex and tight connection structures, making the bogie play multiple crucial roles on the locomotive. It not only bears the entire weight of the car body and distributes the weight of the locomotive evenly to the wheelsets to ensure balanced force on the track, but also, as a key hub for transmitting traction and braking forces, efficiently transmits the power generated by the traction motor to the wheels to drive the train forward. Furthermore, when the train brakes, it accurately transmits the braking force to the wheels to achieve reliable deceleration and stopping.

[0003] In addition, the bogie also bears the important responsibility of ensuring the stable operation of the locomotive on straight tracks and its smooth passage on curved tracks. Its performance directly affects the safety, smoothness and comfort of the locomotive operation. On the other hand, when the locomotive is running on lines with different gradients and curve radii, it cannot flexibly and automatically adjust its own parameters to maintain the best traction performance. On small-radius curves, this reduces the locomotive's running stability and safety. However, the current bogie traction device is a component that transmits traction force and ensures the power output of the vehicle. Once a fault occurs, it needs to be disassembled, repaired and the components replaced in a timely manner. If the device structure is complex and the disassembly steps are cumbersome, it will greatly extend the operation time of a single maintenance, thus reducing the efficiency of use. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a bogie traction device, which aims to improve the existing technology. The current bogie traction device is a core component that transmits traction force and ensures the power output of the vehicle. Once a failure occurs, it needs to be disassembled and repaired in time, which leads to complicated disassembly steps and significantly prolongs the operation time of each maintenance, thus reducing the efficiency of use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bogie traction device, comprising a second traction rod, a first traction rod slidably connected to the left end of the second traction rod, a butterfly washer provided on the right side of the outer wall of the first traction rod, an end cap provided on the right side of the butterfly washer, hexagonal head bolts threaded around the right end of the end cap, a spherical bearing engaged at the right end of the second traction rod, a hexagonal nut threaded on the left side of the outer wall of the spherical bearing, and a bogie locking hook fixedly connected to the right end of the spherical bearing.

[0006] As a further description of the above technical solution:

[0007] The bogie locking hook is rotatably connected to a pin on its inner side.

[0008] As a further description of the above technical solution:

[0009] A solid polyurethane core is provided at the middle of the left end of the second traction rod.

[0010] As a further description of the above technical solution:

[0011] Hollow polyurethane is provided on the inner side of the first traction rod.

[0012] As a further description of the above technical solution:

[0013] The inner side of the hollow polyoxyester is slidably connected to the outer wall of the solid polyoxyester.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, regarding the working principle, the bogie locking hook is a key component for transmitting traction force, transferring the traction force from the traction rod to the bogie. The pin shaft passes through the bogie locking hook and the second traction rod, ensuring stable transmission of traction force. The hexagonal nut is used to fasten the pin shaft connection component, preventing loosening during device operation and enhancing the stability of the device. The first and second traction rods are intermediate carriers for traction force transmission. The hexagonal head bolt is used to fix the end cover component, ensuring its secure installation. It allows for quick disassembly of each component, reducing the time and labor costs required for disassembly, improving work efficiency, and also reducing the risk of damage to components due to disassembly difficulties. Attached Figure Description

[0016] Figure 1 This is a front perspective view of a bogie traction device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of a bogie traction device proposed in this utility model;

[0018] Figure 3 This is a structural cross-sectional view of a bogie traction device proposed in this utility model;

[0019] Figure 4 This is a partial structural cross-sectional view of a bogie traction device proposed in this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of a bogie traction device proposed in this utility model.

[0021] Legend:

[0022] 1. Bogie locking hook; 2. Pin; 3. Spherical plain bearing; 4. Hexagonal nut; 5. Hollow polyurethane; 6. Solid polyurethane; 7. Butterfly washer; 8. Traction rod one; 9. Traction rod two; 10. End cap; 11. Hexagonal head bolt. Detailed Implementation

[0023] 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.

[0024] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides a bogie traction device, including a second traction rod 9, a first traction rod 8 slidably connected to the left end of the second traction rod 9, a butterfly washer 7 provided on the right side of the outer wall of the first traction rod 8, an end cap 10 provided on the right side of the butterfly washer 7, and hexagonal head bolts 11 threadedly connected to the right end of the end cap 10 around its circumference, a spherical bearing 3 engagingly connected to the right end of the second traction rod 9, a hexagonal nut 4 threadedly connected to the left side of the outer wall of the spherical bearing 3, a bogie locking hook 1 fixedly connected to the right end of the spherical bearing 3, and a pin 2 rotatably connected to the inner side of the bogie locking hook 1.

[0025] Specifically, the left end of the second traction rod 9 is slidably connected to the first traction rod 8. This sliding connection design allows for relative linear movement between the two to meet the mechanical action requirements under specific working conditions. On the right side of the outer wall of the first traction rod 8, multiple hexagonal head bolts 11 are evenly threaded around the right end of the end cap 10. Tightening these hexagonal head bolts 11 ensures a tight fit between the end cap 10 and the surrounding components. Hexagonal nuts 4 are used to further lock the connection between the spherical bearing 3 and the second traction rod 9, preventing loosening during use. The right end of the spherical bearing 3 is fixedly connected to the bogie locking hook 1, ensuring safety and stability throughout the entire operation.

[0026] Please see the appendix Figure 3 - Appendix Figure 5 Hollow polyoxygen 5 is provided on the inner side of the first traction rod 8, and solid polyoxygen 6 is provided in the middle of the left end of the second traction rod 9. The inner side of the hollow polyoxygen 5 is slidably connected to the outer wall of the solid polyoxygen 6.

[0027] Specifically, a solid polyurethane 6 is arranged in the middle of the left end via traction rod 2 9. The solid polyurethane 6 has a dense texture, high strength and stability, and can withstand a certain amount of pressure and friction. The inner side of the hollow polyurethane 5 and the outer wall of the solid polyurethane 6 are connected by a sliding connection, allowing the solid polyurethane 6 to slide smoothly on the inner side of the hollow polyurethane 5. When traction rod 1 8 and traction rod 2 9 move relative to each other, this sliding connection can effectively reduce friction and wear, reduce energy loss, and also play a certain role in buffering and shock absorption, ensuring the smooth and reliable operation of the entire mechanical system and extending the service life of the components.

[0028] Working Principle: In terms of working principle, the bogie locking hook 1 is a key component for transmitting traction force, transferring it from the traction rod to the bogie. The pin 2 passes through the bogie locking hook 1 and the traction rod 9, ensuring stable traction force transmission. The spherical bearing 3 is installed in an appropriate position to accommodate the multi-angle swaying and displacement of the bogie during operation, ensuring smooth traction force transmission. Hollow polyurethane 5 and solid polyurethane 6 provide buffering and shock absorption, absorbing energy through their elastic deformation. The hexagonal nut 4 is used to fasten the pin 2 connection, preventing loosening during operation. The device is designed to ensure reliable connection. The butterfly washer 7 is elastic, further preventing the nut from loosening and enhancing the stability of the device. The first traction rod 8 and the second traction rod 9 are intermediate carriers for transmitting traction force, enabling the bogie locking hook 1 to achieve vehicle traction. The end cover 10 protects the internal components of the device, preventing dust and impurities from entering. The hexagonal head bolts 11 are used to fix the components of the end cover 10, ensuring that it is firmly installed. The device allows for quick disassembly of each component, reducing the time and labor costs required for disassembly, improving work efficiency, and also reducing the risk of damage to components due to difficult disassembly.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bogie traction device comprising a traction rod (2), characterized in that: The left end of the second traction rod (9) is slidably connected to the first traction rod (8). A butterfly washer (7) is provided on the right side of the outer wall of the first traction rod (8). An end cap (10) is provided on the right side of the butterfly washer (7). Hexagonal head bolts (11) are threaded around the right end of the end cap (10). A spherical bearing (3) is engaged with the right end of the second traction rod (9). A hexagonal nut (4) is threaded on the left side of the outer wall of the spherical bearing (3). A bogie lock hook (1) is fixedly connected to the right end of the spherical bearing (3).

2. The bogie traction device according to claim 1, characterized in that: The bogie locking hook (1) is rotatably connected to a pin (2).

3. The bogie traction device according to claim 1, characterized in that: A solid polyurethane (6) is provided at the middle of the left end of the second traction rod (9).

4. A bogie traction device according to claim 1, characterized in that: Hollow polyurethane (5) is provided on the inner side of the traction rod (8).

5. A bogie traction device according to claim 4, characterized in that: The inner side of the hollow polyoxyester (5) is slidably connected to the outer wall of the solid polyoxyester (6).