Disassembling tool for eight-slot traction rod
By designing specialized disassembly fixtures and utilizing the lifting force of jacks to lower the disassembly components, the problem of rust and jamming of the figure-eight groove traction rod was solved, achieving an efficient and safe disassembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陈海映
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the figure-eight groove tow bar is prone to rust and jamming when exposed to rain, snow and other environments for a long time. Conventional disassembly tools are prone to damaging the tow pin, which is time-consuming, unsafe, and requires a large amount of manpower.
Design a disassembly fixture that includes a drawbar body, a drawbar pin, a flange, a connector, a disassembly component, and a jack. The jack applies an upward lifting force, which causes the disassembly component to generate a downward force, thereby disengaging the drawbar pin.
It reduces disassembly time and manpower input, improves work efficiency, reduces the risk of damage to the traction pin, and ensures the safety of disassembly.
Smart Images

Figure CN224527099U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of traction rod body disassembly technology, and in particular to a disassembly tooling for a figure-eight groove traction rod. Background Technology
[0002] A drawbar is a mechanical component used to connect and transmit traction force, commonly found in railway locomotives, construction machinery, agricultural equipment, and heavy vehicles. Its main function is to bear tensile force, enabling vehicles or equipment to tow other equipment, such as carriages, trailers, or construction machinery.
[0003] A figure-eight groove drawbar disassembly tool is a specialized tool used to disassemble drawbars with a figure-eight groove structure. This type of tool is commonly used in railway vehicles, heavy machinery, or other applications requiring the disassembly of drawbar connection devices.
[0004] However, the following problems were found in the implementation of the relevant technology: the locomotive drawbar is installed at the bottom of the car and is exposed to rain, snow and water for a long time. Sometimes, the contact surface between the drawbar and the flange groove will be corroded, causing jamming. It cannot be disassembled by pushing back with conventional disassembly bolts. Using ordinary tools can easily damage the drawbar, cause delays, waste time and safety, and require a large amount of manpower. In view of this, a disassembly tool for the drawbar with the groove is provided to overcome the above defects. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a disassembly tool for figure-eight groove traction rods.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a disassembly fixture for a figure-eight groove traction rod, comprising a traction rod body, a traction pin fixedly connected to the side of one end of the traction rod body, the traction pin contacting a flange, a figure-eight connecting groove being formed at the bottom of the flange, a connecting member slidably connected to the bottom of the flange, a fixing bolt being provided at the bottom of the flange, a first disassembly member slidably connected to the flange, the first disassembly member contacting a second disassembly member, a mounting plate being provided below the first disassembly member, an insertion hole being formed at the top of the mounting plate, a connecting screw being slidably connected to the insertion hole, and a jack being provided at the top of the mounting plate.
[0007] As a further description of the above technical solution: the traction pin is slidably connected to the flange through the figure-eight connecting groove, the bottom end of the traction pin contacts the top end of the connector, and there are two traction pins to facilitate fixing the traction pins through the connector.
[0008] As a further description of the above technical solution: there are two connectors, and the bottom end of each connector has a round hole. The round hole at the bottom end of the connector is spirally connected to a fixing bolt. The connector is fixedly connected to the flange by the fixing bolt, which facilitates fixing the connector by the fixing bolt.
[0009] As a further description of the above technical solution: the first disassembly component is slidably connected to the figure-eight connecting groove, and a buffer pad is fixedly connected to one side of the first disassembly component. The bottom end of the buffer pad contacts the top end of the traction pin, so as to reduce the damage to the traction pin by setting the buffer pad.
[0010] As a further description of the above technical solution: the top of the first disassembly component is provided with a placement groove, the second disassembly component is located inside the placement groove, and the second disassembly component contacts the first disassembly component through the placement groove, so as to facilitate the placement of the second disassembly component by setting the placement groove.
[0011] As a further description of the above technical solution: the bottom end of the first disassembly component is fixedly connected with a connecting screw, and the bottom end of the second disassembly component is fixedly connected with a connecting screw. The connecting screw is slidably connected to the insertion hole, so as to facilitate the connection of the first disassembly component and the second disassembly component by opening the insertion hole.
[0012] As a further description of the above technical solution: the cross-sectional shape of the top end of the connecting screw matches the cross-sectional shape of the insertion hole, and the connecting screw is screwed to the fixing nut, so as to fix the first disassembly component and the second disassembly component to the mounting plate through the connection between the connecting screw and the fixing nut.
[0013] This utility model has the following beneficial effects:
[0014] This utility model designs a disassembly fixture for a figure-eight groove traction rod. Through design and coordination, it combines components such as a jack, a first disassembly component, and a second disassembly component. By installing the first and second disassembly components on the traction pin and flange, and by setting and activating the jack, an upward lifting force is applied to the pad at the jack output end. The lifting of the pad causes the first and second disassembly components to generate an equal downward force, thereby causing the traction pin to disengage from the figure-eight groove and completing the disassembly. This reduces the time and manpower required for disassembly and improves work efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is an exploded structural diagram of the flange component of this utility model;
[0017] Figure 3This is an exploded structural diagram of the connector of this utility model;
[0018] Figure 4 This is an exploded structural diagram of the mounting plate of this utility model.
[0019] Legend:
[0020] 1. Flange; 2. Traction rod body; 3. Figure-eight connecting groove; 4. Traction pin; 5. Connector; 6. Fixing bolt; 7. Mounting plate; 8. Insertion hole; 9. First disassembly part; 10. Placement groove; 11. Buffer pad; 12. Second disassembly part; 13. Fixing nut; 14. Connecting screw. Detailed Implementation
[0021] Reference Figures 1 to 4 The present invention provides a disassembly fixture for a figure-eight groove traction rod, comprising a traction rod body 2, a traction pin 4 fixedly connected to the side of one end of the traction rod body 2, a flange 1 in contact with the traction pin 4, a figure-eight groove 3 formed at the bottom of the flange 1, a connecting piece 5 slidably connected to the bottom of the flange 1, a fixing bolt 6 provided at the bottom of the flange 1, a first disassembly piece 9 slidably connected to the flange 1, a second disassembly piece 12 in contact with the first disassembly piece 9, a mounting plate 7 provided below the first disassembly piece 9, and an insertion hole 8 formed at the top of the mounting plate 7. The insertion hole 8 is slidably connected to the flange 1. The mounting plate 7 is equipped with a connecting screw 14 and a jack 15 at its top. This utility model installs components such as the first disassembly component 9 and the second disassembly component 12 on the traction pin 4 and the flange component 1. By setting and activating the jack 15, the jack 15 applies an upward lifting force to the pad at the output end of the jack 15. The lifting of the pad causes the first disassembly component 9 and the second disassembly component 12 to generate an equal downward force, thereby causing the traction pin 4 to disengage from the V-groove and completing the disassembly. This reduces the time and manpower required for disassembly and improves work efficiency.
[0022] As a further implementation of the above technical solution: the traction pin 4 is slidably connected to the flange 1 through the figure-eight connecting groove 3, the bottom end of the traction pin 4 is in contact with the top end of the connecting piece 5, and there are two traction pins 4, which facilitates fixing the traction pins 4 through the connecting piece 5.
[0023] As a further implementation of the above technical solution: there are two connectors 5. The bottom end of the connector 5 is provided with a round hole. The round hole at the bottom end of the connector 5 is screwed to the fixing bolt 6. The connector 5 is fixedly connected to the flange 1 by the fixing bolt 6, so that the connector 5 can be fixed by the fixing bolt 6.
[0024] As a further implementation of the above technical solution: the first disassembly part 9 is slidably connected to the figure-eight connecting groove 3, and a buffer pad 11 is fixedly connected to one side of the first disassembly part 9. The bottom end of the buffer pad 11 contacts the top end of the traction pin 4, so as to reduce the damage to the traction pin 4 by setting the buffer pad 11.
[0025] As a further implementation of the above technical solution: the top of the first disassembly component 9 is provided with a placement groove 10, and the second disassembly component 12 is located inside the placement groove 10. The second disassembly component 12 contacts the first disassembly component 9 through the placement groove 10, so that the second disassembly component 12 can be placed by setting the placement groove 10.
[0026] As a further implementation of the above technical solution: the bottom end of the first disassembly component 9 is fixedly connected with a connecting screw 14, the bottom end of the second disassembly component 12 is fixedly connected with a connecting screw 14, and the connecting screw 14 is slidably connected to the insertion hole 8, so as to facilitate the connection of the first disassembly component 9 and the second disassembly component 12 by opening the insertion hole 8.
[0027] As a further implementation of the above technical solution: the cross-sectional shape of the top end of the connecting screw 14 matches the cross-sectional shape of the insertion hole 8, and the connecting screw 14 is screwed to the fixing nut 13, so that the first disassembly part 9 and the second disassembly part 12 can be fixed on the mounting plate 7 through the connection between the connecting screw 14 and the fixing nut 13.
[0028] Working principle:
[0029] When using this utility model, the user should first use tools to secure the car whose tow bar body 2 needs to be disassembled. Then, the user should remove the first disassembly piece 9 and insert the end of the first disassembly piece 9 with the buffer pad 11 into the figure-eight connecting groove 3 at the bottom of the flange 1. A towing pin 4 is provided at the bottom of the inner side of the figure-eight connecting groove 3, and a connecting piece 5 slides at the bottom of the flange 1. The connecting piece 5 is connected to the flange 1 by a fixing bolt 6. Before using the first disassembly piece 9, the user should remove the fixing nut 13 and separate the connecting piece 5 and the flange 1. When a part of the first disassembly piece 9 is inserted into the gap at the upper end of the figure-eight connecting groove 3, and the buffer pad 11 fixed at its bottom end contacts the top of the towing pin 4, the user should remove the first disassembly piece 9 and insert the second disassembly piece 12 into the gap between the tow bar body 2 and the flange 1. Then, the bottom end of the inner side of the second disassembly piece 12 should be aligned with the first disassembly piece 9. The placement groove 10 on one side slides, and then the user takes out the mounting plate 7. The top of the mounting plate 7 has an insertion hole 8. The bottom of the first disassembly part 9 and the second disassembly part 12 are fixed with connecting screws 14. The user should insert the connecting screws 14 into the insertion hole 8 at the top of the mounting plate 7, and then use the fixing nut 13 to screw the bottom of the connecting screws 14, thereby fixing the first disassembly part 9 and the second disassembly part 12 on the mounting plate 7. Then the user places a jack 15 on the top of the mounting plate 7 and places several pads between the top of the jack 15 and the flange 1. Then the user starts the jack 15 so that one end of the output shaft of the jack 15 presses the pads and the flange 1. At this time, the pads will transmit an upward lifting force upward. The increase in the lifting force generated by starting the jack 15 will correspondingly lead to a greater downward force on the traction pin 4, until the traction pin 4 is disengaged from the figure-eight connecting groove 3.
[0030] In this utility model, the fixing bolt 6, flange 1, buffer pad 11 and other components are all existing technologies, and their working principle is consistent with similar products on the market, so they will not be described in detail here.
[0031] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 tooling for disassembling a figure-eight groove traction rod, comprising a traction rod body (2), characterized in that: A traction pin (4) is fixedly connected to the side of one end of the traction rod body (2). The traction pin (4) contacts a flange (1). The bottom of the flange (1) is provided with a figure-eight connecting groove (3). The bottom end of the flange (1) is slidably connected with a connector (5). The bottom of the flange (1) is provided with a fixing bolt (6). The flange (1) is slidably connected with a first disassembly piece (9). The first disassembly piece (9) contacts a second disassembly piece (12). A mounting plate (7) is provided below the first disassembly piece (9). The top end of the mounting plate (7) is provided with an insertion hole (8). The insertion hole (8) is slidably connected with a connecting screw (14). The top end of the mounting plate (7) is provided with a jack (15).
2. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: The traction pin (4) is slidably connected to the flange (1) through the figure-eight connecting groove (3), and the bottom end of the traction pin (4) is in contact with the top end of the connector (5). There are two traction pins (4).
3. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: There are two connectors (5). The bottom end of each connector (5) has a round hole. The round hole at the bottom end of each connector (5) is spirally connected to a fixing bolt (6). The connector (5) is fixedly connected to the flange (1) by the fixing bolt (6).
4. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: The first disassembly part (9) is slidably connected to the figure-eight connecting groove (3), and a buffer pad (11) is fixedly connected to one side of the first disassembly part (9). The bottom end of the buffer pad (11) is in contact with the top end of the traction pin (4).
5. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: The top end of the first disassembly component (9) is provided with a placement groove (10), and the second disassembly component (12) is located inside the placement groove (10). The second disassembly component (12) contacts the first disassembly component (9) through the placement groove (10).
6. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: The bottom end of the first disassembly component (9) is fixedly connected to a connecting screw (14), and the bottom end of the second disassembly component (12) is fixedly connected to a connecting screw (14). The connecting screw (14) is slidably connected to the insertion hole (8).
7. The disassembly fixture for the figure-eight groove traction rod according to claim 1, characterized in that: The cross-sectional shape of the top end of the connecting screw (14) matches the cross-sectional shape of the socket (8), and the connecting screw (14) is helically connected to the fixing nut (13).