A full-automatic bolt dismounting tool

By designing a fully automated bolt removal fixture, and utilizing adjustable connecting components and a moving mechanism, the problem of low disassembly efficiency in existing equipment has been solved, achieving an efficient and safe bolt removal process.

CN224488296UActive Publication Date: 2026-07-14CHINA RAILWAY 12TH BUREAU GRP RAILWAY MAINTENANCE ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY 12TH BUREAU GRP RAILWAY MAINTENANCE ENG CO LTD
Filing Date
2025-06-19
Publication Date
2026-07-14

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Abstract

The utility model belongs to the technical field of dismounting frock, concretely relates to a full -automatic bolt dismounting frock, including fixed plate, horizontal moving mechanism, vertical moving mechanism and bolt wrench, horizontal moving mechanism and vertical moving mechanism all set up on the fixed plate, the bolt wrench is equipped with two, two bolt wrenches all are connected with horizontal moving mechanism and vertical moving mechanism through connecting assembly, drive two bolt wrenches opposite or opposite back movement through horizontal moving mechanism, drive two bolt wrenches up and down movement through vertical moving structure, be equipped with two bolt wrenches, can effectively improve work efficiency, and through the setting of connecting assembly, through one horizontal moving mechanism and one vertical moving mechanism, can realize the up and down movement and opposite or opposite back movement of two bolt wrenches.
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Description

Technical Field

[0001] This utility model belongs to the field of disassembly tooling technology, specifically relating to a fully automatic bolt disassembly tooling. Background Technology

[0002] Bolt removal is a crucial and meticulous task during track inspection. Bolts play a vital role in the track structure, securing rails and connecting components. After prolonged operation, they may need to be removed and replaced due to corrosion, loosening, or damage. Before removal, bolt locations and specifications must be clearly marked for subsequent installation. Use appropriate tools, such as wrenches or power tools, and operate in the correct sequence, avoiding forced twisting that could damage components. For severely corroded bolts, soak them in a rust remover until the rust loosens before removal. Removed bolts should be properly stored. If reused, their appearance and performance must be inspected to ensure they meet requirements. The entire removal process must strictly adhere to safety procedures to prevent accidents, ensure the smooth progress of track inspections, and guarantee the safe and stable operation of the track system.

[0003] The utility model patent with patent application number 201920804935.3 discloses a railway track maintenance engineering vehicle, which can drive the socket wrench to rise and fall through the lifting component and automatically tighten bolts, and drive the wrench component to move through the walking component, without manual operation and with high work efficiency.

[0004] However, it is equipped with a socket wrench, which has low disassembly efficiency and a fixed position, and cannot be adjusted according to the spacing of the bolts on both sides of the rail. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a fully automatic bolt removal fixture, which is equipped with two bolt handles, and the distance between the two bolt wrenches is adjustable.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A fully automatic bolt removal fixture includes a fixed plate, a horizontal moving mechanism, a vertical moving mechanism, and a bolt wrench; both the horizontal and vertical moving mechanisms are mounted on the fixed plate.

[0008] The bolt wrench is provided in two parts. Both bolt wrenches are connected to the horizontal moving mechanism and the vertical moving mechanism through the connecting assembly. The horizontal moving mechanism drives the two bolt wrenches to move relative to each other or away from each other, and the vertical moving mechanism drives the two bolt wrenches to move up and down.

[0009] The connecting assembly includes a telescopic rod and a connecting slider; one end of the telescopic rod is fixedly connected to the moving part of the horizontal moving mechanism, and a bolt wrench is connected to the other end of the telescopic rod through a connecting rod; the connecting slider is slidably connected to the connecting rod; the moving part of the vertical moving mechanism is provided with a groove that is slidably connected to the connecting slider.

[0010] The connecting assembly also includes a support spring, and connecting rings are fixed at both ends of the connecting rod. The connecting slider is located between the two connecting rings, and a support spring is provided between each connecting ring.

[0011] The horizontal moving mechanism includes a fixed frame, positive and negative lead screws, a moving part, and a drive motor; the moving part is a slider, which is slidably connected to the fixed frame.

[0012] The fixed frame is fixedly connected to the fixed plate, the positive and negative screw fixed frame is rotatably connected, and the output shaft of the drive motor is fixedly connected to one end of the positive and negative screw; there are two sliders, which are arranged opposite to each other on the positive and negative screw and are threadedly connected to the positive and negative screw.

[0013] The vertical movement mechanism uses a linear motor.

[0014] It also includes a mounting plate, which is slidably connected to a fixing plate, and the mounting plate is provided with bolt connection holes.

[0015] The mounting plate is slidably connected to the fixing plate via a connecting shaft, and both sides of the mounting plate are connected to the fixing plate via return springs.

[0016] The bolt wrench is fixed with a connecting frame, and the connecting frame is equipped with a centering plate.

[0017] The centering plate is made of polytetrafluoroethylene.

[0018] The centering plate is slidably connected to the connecting frame, and the connecting frame is threaded with an adjusting bolt, one end of which is rotatably connected to the centering plate.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] The system features two bolt wrenches, which effectively improves work efficiency. Furthermore, through the connection components, a horizontal movement mechanism and a vertical movement mechanism are used to enable the two bolt wrenches to move up and down, as well as to move relative to or away from each other.

[0021] The structural setup of the mounting plate and centering plate can be ensured by two centering plate clamping rails, with two bolt wrenches positioned opposite the bolts on both sides of the rail. Attached Figure Description

[0022] Figure 1This is a structural schematic diagram of one direction of the present invention;

[0023] Figure 2 This is a structural schematic diagram of another aspect of the present invention;

[0024] Figure 3 This is the front view of this utility model;

[0025] Figure 4 This is a schematic diagram of the usage state of this utility model in one direction;

[0026] Figure 5 This is a schematic diagram of the usage state of this utility model in another direction;

[0027] Figure 6 yes Figure 5 Front view of the structure shown;

[0028] Wherein: 1 is a fixed plate, 2 is a horizontal moving mechanism, 20 is a fixed frame, 21 is a positive and negative lead screw, 22 is a slider, 23 is a drive motor, 3 is a vertical moving mechanism, 4 is a bolt wrench, 5 is a connecting assembly, 50 is a telescopic rod, 51 is a connecting slider, 52 is a connecting rod, 53 is a slide groove, 54 is a support spring, 55 is a connecting ring, 6 is a mounting plate, 60 is a bolt connection hole, 7 is a connecting shaft, 8 is a return spring, 9 is a connecting frame, 10 is a centering plate, and 11 is an adjusting bolt. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0030] like Figure 1-6 As shown, a fully automatic bolt removal fixture includes a fixed plate 1, a horizontal moving mechanism 2, a vertical moving mechanism 3, and a bolt wrench 4; both the horizontal moving mechanism 2 and the vertical moving mechanism 3 are mounted on the fixed plate 1. Specifically: the mounting plate 6 is connected to a railcar, and the fixture is moved to the bolt to be removed by the movement of the railcar; the bolt wrench 4 can be an electric bolt wrench or an air wrench.

[0031] Two bolt wrenches 4 are provided, and both bolt wrenches 4 are connected to the horizontal moving mechanism 2 and the vertical moving mechanism 3 via the connecting assembly 5. The horizontal moving mechanism 2 drives the two bolt wrenches 4 to move relative to or away from each other, and the vertical moving mechanism drives the two bolt wrenches 4 to move up and down.

[0032] In use, the tool is moved to the bolt to be removed by a railcar; the horizontal moving mechanism 2 drives the two bolt wrenches 4 to move relative to each other, so that the two bolt wrenches 4 are above the bolts on both sides of the rail; then the vertical moving mechanism 3 drives the two bolt wrenches 4 to move down and engage with the bolts on both sides of the rail; finally, the bolts are removed by the bolt wrenches 4. During the removal process, the vertical moving mechanism 3 moves upward accordingly.

[0033] During the downward movement of the two bolt wrenches 4, the bolt wrenches 4 can be activated first to make the sockets on them rotate so that they can be inserted into the bolts.

[0034] The connecting assembly 5 includes a telescopic rod 50 and a connecting slider 51; one end of the telescopic rod 50 is fixedly connected to the moving part of the horizontal moving mechanism 2, and the bolt wrench 4 is connected to the other end of the telescopic rod 50 through a connecting rod 52; the connecting slider 51 is slidably connected to the connecting rod 52; the moving part of the vertical moving mechanism 3 is provided with a groove 53 that is slidably connected to the connecting slider 51. Specifically, the connecting rod 52 is a hexagonal prism, and the connecting slider 51 is provided with a corresponding hexagonal through hole.

[0035] When the horizontal moving mechanism 2 drives the two bolt wrenches 4 to move relative to or away from each other, it will cause the connecting slider 51 to move along the slide groove 53. When the vertical moving mechanism 3 drives the two bolt wrenches 4 to move up and down, it will cause the telescopic rod 50 to extend and retract.

[0036] Furthermore, to achieve buffering, the connecting assembly 5 also includes a support spring 54. Connecting rings 55 are fixed to both ends of the connecting rod 52, and the connecting slider 51 is located between the two connecting rings 55. A support spring 54 is provided between each connecting ring 55. The support spring 54 is sleeved on the outside of the connecting rod 52, and its two ends abut against the connecting ring 55 and the connecting slider 51, respectively.

[0037] When the bolt wrench 4 encounters resistance while moving downwards, it will cause the connecting rod 52 to move upwards, compressing the support spring 54 located below, thus providing a cushioning effect and preventing the bolt wrench 4 from colliding with the bolt as it moves downwards.

[0038] Furthermore, the horizontal moving mechanism 2 includes a fixed frame 20, a positive and negative lead screw 21, a moving part and a drive motor 23; the moving part is a slider 22, which is slidably connected to the fixed frame 20.

[0039] The fixed frame 20 is fixedly connected to the fixed plate 1, and the positive and negative lead screw 21 is rotatably connected to the fixed frame 20. The output shaft of the drive motor 23 is fixedly connected to one end of the positive and negative lead screw 21, and the housing of the drive motor 23 is fixedly connected to the fixed frame 20. Two sliders 22 are provided, and the two sliders 22 are arranged opposite to each other on the positive and negative lead screw 21 and threadedly connected to the positive and negative lead screw 21. The drive motor 23 drives the positive and negative lead screw 21 to rotate forward or reverse, thereby realizing the relative or opposite movement of the two sliders 22.

[0040] Furthermore, the vertical moving mechanism 3 adopts a linear motor, and its fixed part is the base, which is fixedly connected to the fixed plate 1; its moving part is the mover seat, on which a guide rail is provided, and the slide groove 53 is opened on the guide rail.

[0041] Furthermore, since deviations may occur during the movement of the track vehicle, resulting in misalignment between the two bolt wrenches 4 and the bolts on both sides, a mounting plate 6 is also included. The mounting plate 6 is slidably connected to the fixing plate 1, and the mounting plate 6 is provided with bolt connection holes 60, meaning that the mounting plate 6 is connected to the track vehicle by bolts. The structural design of the mounting plate 6 ensures that the fixing plate 1 and the track vehicle can be adjusted for horizontal movement.

[0042] Specifically: Mounting plate 6 is slidably connected to fixed plate 1 via connecting shaft 7, and fixed plate 1 is provided with connecting seat fixedly connected to connecting shaft 7. Both sides of mounting plate 6 are connected to fixed plate 1 via return springs 8. Return springs 8 are sleeved on the outside of connecting shaft 7, and both ends of return springs 8 abut against mounting plate 6 and fixed plate 1 (connecting seat) respectively.

[0043] When the fixed plate 1 moves, the corresponding return spring 8 will be compressed, generating elastic potential energy.

[0044] A connecting bracket 9 is fixed to the bolt wrench 4, and a centering plate 10 is provided on the connecting bracket 9. When the two bolt wrenches 4 move relative to each other, the two centering plates 10 will also move relative to each other. The two centering plates 10 will press against and align with the rail, thereby ensuring that the sleeves on the two bolt wrenches 4 can be aligned with the bolts on both sides of the rail.

[0045] The centering plate 10 mainly serves a centering function; when the vertical motion mechanism drives the two bolt wrenches 4 to move up and down, the centering plate 10 will rub against the rail. In order to reduce friction, the centering plate 10 is preferably made of polytetrafluoroethylene.

[0046] Furthermore, the centering plate 10 is slidably connected to the connecting frame 9, and an adjusting bolt 11 is threaded onto the connecting frame 9. One end of the adjusting bolt 11 is rotatably connected to the centering plate 10. By rotating the adjusting bolt 11, the distance between the centering plate 10 and the connecting frame 9 can be changed, thereby achieving the adjustment function.

[0047] When in use, adjust as needed; to ensure that after the two centering plates 10 are in contact with the rail, the sockets on the two bolt wrenches 4 are aligned with the bolts on both sides of the rail.

[0048] The above description only describes the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A fully automatic bolt removal fixture, characterized in that: It includes a fixed plate (1), a horizontal moving mechanism (2), a vertical moving mechanism (3), and a bolt wrench (4); the horizontal moving mechanism (2) and the vertical moving mechanism (3) are both mounted on the fixed plate (1). The bolt wrench (4) is provided in two parts. Both bolt wrenches (4) are connected to the horizontal moving mechanism (2) and the vertical moving mechanism (3) through the connecting assembly (5). The horizontal moving mechanism (2) drives the two bolt wrenches (4) to move relative to each other or away from each other. The vertical moving mechanism drives the two bolt wrenches (4) to move up and down. The connecting assembly (5) includes a telescopic rod (50) and a connecting slider (51); one end of the telescopic rod (50) is fixedly connected to the moving part of the horizontal moving mechanism (2), and the bolt wrench (4) is connected to the other end of the telescopic rod (50) through the connecting rod (52); the connecting slider (51) is slidably connected to the connecting rod (52); the moving part of the vertical moving mechanism (3) is provided with a groove (53) that is slidably connected to the connecting slider (51).

2. The fully automatic bolt removal fixture according to claim 1, characterized in that: The connecting assembly (5) also includes a support spring (54), and the two ends of the connecting rod (52) are respectively fixed with connecting rings (55). The connecting slider (51) is located between the two connecting rings (55), and each connecting ring (55) is provided with a support spring (54).

3. The fully automatic bolt removal fixture according to claim 1, characterized in that: The horizontal moving mechanism (2) includes a fixed frame (20), a positive and negative lead screw (21), a moving part and a drive motor (23); the moving part is a slider (22), which is slidably connected to the fixed frame (20); The fixed frame (20) is fixedly connected to the fixed plate (1), the positive and negative screw (21) is rotatably connected to the fixed frame (20), and the output shaft of the drive motor (23) is fixedly connected to one end of the positive and negative screw (21); there are two sliders (22), and the two sliders (22) are arranged opposite to each other on the positive and negative screw (21) and threadedly connected to the positive and negative screw (21).

4. The fully automatic bolt removal fixture according to claim 1, characterized in that: The vertical movement mechanism (3) uses a linear motor.

5. The fully automatic bolt removal fixture according to claim 1, characterized in that: It also includes a mounting plate (6), which is slidably connected to the fixing plate (1), and the mounting plate (6) is provided with bolt connection holes (60).

6. The fully automatic bolt removal fixture according to claim 5, characterized in that: The mounting plate (6) is slidably connected to the fixing plate (1) via the connecting shaft (7), and both sides of the mounting plate (6) are connected to the fixing plate (1) via the return spring (8).

7. A fully automatic bolt removal fixture according to claim 5 or 6, characterized in that: The bolt wrench (4) is fixed with a connecting frame (9), and the connecting frame (9) is provided with a centering plate (10).

8. The fully automatic bolt removal fixture according to claim 7, characterized in that: The centering plate (10) is made of polytetrafluoroethylene.

9. The fully automatic bolt removal fixture according to claim 8, characterized in that: The centering plate (10) is slidably connected to the connecting frame (9), and the connecting frame (9) is threaded with an adjusting bolt (11), one end of which is rotatably connected to the centering plate (10).