Railway sleeper rail bolt and nut dismounting device
By designing an adjustable railway sleeper bolt and nut removal device, the problem of existing tools being unable to adapt to different positions and angles was solved, improving disassembly efficiency and device durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI MUHENG CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-07-03
AI Technical Summary
Existing railway sleeper bolt and nut removal tools are difficult to adjust flexibly when dealing with bolts and nuts in different positions and angles, resulting in high operational difficulty, low efficiency, and easy damage to the device.
A device including a T-shaped frame, a motor frame, a replacement sleeve, and a disassembly sleeve is designed. It can adapt to the bolt and nut requirements of different positions through an adjustable flip plate and threaded connection. It is equipped with a protective plate and a protective cover to protect the motor, thereby improving the versatility and durability of the device.
It enables rapid adaptation to the disassembly of bolts and nuts of different specifications, reduces operation time and labor costs, extends the life of the device, and improves work efficiency and safety.
Smart Images

Figure CN224445844U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disassembly device technology, and in particular to a railway sleeper bolt and nut disassembly device. Background Technology
[0002] In the field of railway construction and maintenance, the removal of railway sleeper bolts and nuts is a crucial step in ensuring the safe and stable operation of the tracks. With the continuous increase in railway transport volume and the ongoing extension of railway lines, higher demands are placed on the efficiency and quality of railway sleeper bolt and nut removal. However, existing railway sleeper bolt and nut removal tools suffer from numerous technical problems in their design and use, seriously affecting the smooth progress of the removal work. Existing removal tools lack flexibility in their structural design, making it difficult to adapt to the removal needs of bolts and nuts in different positions. In actual operation, the environment of railway sleepers is complex and diverse, and the position of bolts and nuts may vary depending on factors such as track laying method and sleeper type. However, existing removal tools often cannot effectively adjust their structure according to specific positions. For example, when facing bolts and nuts at special angles or positions, operators need to spend a lot of time and energy adjusting the position of the entire device or finding a suitable operating angle, which not only increases the difficulty of operation but also greatly reduces work efficiency.
[0003] Therefore, in order to address this problem, this utility model provides a railway sleeper bolt and nut disassembly device. Utility Model Content
[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a railway sleeper bolt and nut disassembly device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a railway sleeper bolt and nut disassembly device, comprising a T-shaped frame, a motor frame provided at the top of the T-shaped frame, a replacement sleeve fixedly connected to the output end of the motor frame passing through the T-shaped frame, side seats symmetrically provided on both sides of the T-shaped frame, a flip plate snapped into the side of the side seat, a fixed threaded rod connected to the side of the side seat and the side of the flip plate by a thread, the fixed threaded rod being used to adjust the position of the flip plate, and a disassembly sleeve connected to the bottom of the replacement sleeve by a thread.
[0006] Preferably, the top of the T-shaped frame is symmetrically provided with protective plates, and the two protective plates are respectively located on both sides of the motor frame.
[0007] Preferably, the upward-facing side of the flip plate is provided with a pressing pad, which is used for protection.
[0008] Preferably, the inner wall of the replacement sleeve is provided with a threaded seat, and the top of the disassembly sleeve is provided with a mating sleeve, and the threaded seat and the mating sleeve are threadedly connected.
[0009] Preferably, the surface of the disassembly sleeve is provided with a tightening ring, and a hexagonal tool groove is provided at the end of the disassembly sleeve away from the replacement sleeve.
[0010] Preferably, the surface of the disassembly sleeve is threaded with a protective cover.
[0011] Compared with the prior art, this utility model provides a railway sleeper bolt and nut disassembly device, which has the following advantages:
[0012] 1. This railway sleeper bolt and nut disassembly device allows for easy adjustment of the flip plate's position on the side seat by adjusting the fixed threaded rod. This enables the device to better fit the railway sleeper surface, adapting to various complex working environments. It eliminates the need for frequent adjustments to the entire device's position or equipment replacement, saving operating time and labor costs. Furthermore, the replacement sleeve and disassembly sleeve are connected by threads, allowing operators to quickly and easily replace disassembly sleeves with different specifications of bolts and nuts without requiring large-scale modifications to the entire device. This significantly improves the device's applicability to different bolt and nut specifications, thereby substantially increasing work efficiency.
[0013] 2. The railway sleeper bolt and nut disassembly device features symmetrically arranged protective plates on the top of the T-shaped frame. These plates prevent external debris and flying objects from impacting the motor frame during bolt and nut disassembly, thus avoiding damage to the motor inside the frame, ensuring stable motor operation, and extending the device's service life. The protective cover on the threaded connection of the disassembly sleeve prevents dust and debris from entering the sleeve when it is not in use, avoiding contamination or damage to the hexagonal tool slot, and ensuring the normal performance of the disassembly sleeve. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a railway sleeper bolt and nut disassembly device proposed in this utility model;
[0015] Figure 2 This is a structural cross-sectional view of a railway sleeper bolt and nut disassembly device proposed in this utility model;
[0016] Figure 3 This utility model proposes a railway sleeper bolt and nut disassembly device. Figure 1 Enlarged view of area A in the middle.
[0017] In the diagram: 1. T-shaped frame; 2. Motor frame; 3. Protective plate; 4. Side seat; 5. Flip plate; 6. Fixed threaded rod; 7. Pressing pad; 8. Replacement sleeve; 801. Threaded seat; 9. Disassembly sleeve; 901. Tightening ring; 902. Hexagonal tool slot; 903. Connecting sleeve; 10. Protective cover. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] Reference Figures 1-3 A railway sleeper bolt and nut disassembly device has a main structure of a T-shaped frame 1. A motor frame 2 is installed on the top of the T-shaped frame 1 by welding, bolting, or other methods. The output end of the motor frame 2 passes through the T-shaped frame 1, and a replacement sleeve 8 is fixedly connected to the output end by welding, keying, or other methods. Side seats 4 are symmetrically welded or bolted to both sides of the T-shaped frame 1. The side seats 4 are designed with slots, and a flip plate 5 is engaged with the side of the side seats 4 through the slots, allowing the flip plate 5 to rotate around the engagement point. Threaded holes are drilled on the sides of both the side seats 4 and the flip plate 5. By rotating the fixing threaded rod 6... The rotating plate 5 is adjusted on the side seat 4 by rotating the fixed threaded rod 6 and using the threaded rod 6 to engage with the threaded hole. The inner wall of the bottom of the replacement sleeve 8 is machined with internal threads, and the outer wall of the top of the disassembly sleeve 9 is machined with external threads. The two are connected together by threads. The motor frame 2 can drive the replacement sleeve 8 and the disassembly sleeve 9 to rotate, thereby disassembling the railway sleeper bolts and nuts. By adjusting the fixed threaded rod 6, the position of the rotating plate 5 can be easily adjusted to meet the disassembly requirements of bolts and nuts in different positions, thus improving the versatility and practicality of the device.
[0021] Two protective plates 3 are symmetrically installed on the top of the T-shaped frame 1 by welding. The two protective plates 3 are respectively set on both sides of the motor frame 2. The protective plates 3 can be made of metal plates, and their size is designed according to the size of the motor frame 2 and the protection requirements. The protective plates 3 can effectively protect the motor frame 2. During the disassembly of bolts and nuts, they can prevent external debris, splashes and other objects from hitting the motor frame 2, avoid damage to the motor frame 2, ensure the normal operation of the motor inside the motor frame 2, and extend the service life of the entire disassembly device.
[0022] On the upward-facing side of the flip plate 5, a pressing pad 7 is installed by adhesive. The pressing pad 7 can be made of rubber, which has a certain degree of elasticity and softness, and can play a good role in cushioning and protection. Alternatively, it can be fixed by bolts. Holes are pre-drilled in the flip plate 5, and the pressing pad 7 is fixed to the flip plate 5 with bolts. When using this disassembly device, the pressing pad 7 can reduce the rigid collision between the flip plate 5 and the railway sleeper or other contact surfaces, avoiding damage to the sleeper or the device itself. At the same time, it can also improve the stability during operation, allowing the device to better fit the sleeper surface and ensuring the smooth progress of the disassembly work.
[0023] The inner wall of the replacement sleeve 8 is machined with a threaded seat 801 by milling or other machining methods. The inner wall of the threaded seat 801 is provided with internal threads. Similarly, the top of the disassembly sleeve 9 is machined with a mating sleeve 903 by milling or other machining methods. The outer wall of the mating sleeve 903 is provided with external threads that match the internal threads of the threaded seat 801. During installation, the mating sleeve 903 of the disassembly sleeve 9 is aligned with the threaded seat 801 of the replacement sleeve 8, and then the disassembly sleeve 9 is rotated to make the two tightly connected by threads. The threaded connection between the threaded seat 801 and the mating sleeve 903 realizes a reliable connection between the replacement sleeve 8 and the disassembly sleeve 9, which facilitates the installation and disassembly of the disassembly sleeve 9. When it is necessary to disassemble bolts and nuts of different specifications, the disassembly sleeve 9 of different specifications can be quickly replaced as needed, which improves the applicability and working efficiency of the device.
[0024] The surface of the disassembly sleeve 9 is welded with a tightening ring 901. The surface of the tightening ring 901 can be machined with anti-slip texture to increase friction and facilitate manual tightening by the operator. At the end of the disassembly sleeve 9 away from the replacement sleeve 8, a hexagonal tool groove 902 is formed by milling or other machining methods. The size of the hexagonal tool groove 902 is designed according to the common specifications of railway sleeper bolts and nuts to ensure good matching with the bolts and nuts. The tightening ring 901 facilitates manual installation or removal of the disassembly sleeve 9 by the operator without the need for additional tools, improving the convenience of operation. The hexagonal tool groove 902 can fit tightly with the bolts and nuts on the railway sleeper. When the motor drives the disassembly sleeve 9 to rotate, it can effectively transmit torque to the bolts and nuts to realize the disassembly operation of the bolts and nuts.
[0025] The surface of the disassembly sleeve 9 is machined with external threads by turning or other machining methods. The protective cover 10 is made of plastic or metal, and its inner wall is provided with internal threads that match the external threads on the surface of the disassembly sleeve 9. In use, the protective cover 10 is aligned with the disassembly sleeve 9, and then the protective cover 10 is rotated to connect to the disassembly sleeve 9 by threads. The protective cover 10 can protect the disassembly sleeve 9 when it is not in use, preventing dust, debris and other objects from entering the disassembly sleeve 9, avoiding contamination or damage to the hexagonal tool groove 902, ensuring the normal use performance of the disassembly sleeve 9, and extending its service life. At the same time, the protective cover 10 can also prevent operators from accidentally touching the hexagonal tool groove 902 and getting injured, thus improving the safety of the device.
[0026] The surface of the disassembly sleeve 9 is machined with external threads by turning or other machining methods. The protective cover 10 is made of plastic or metal, and its inner wall is provided with internal threads that match the external threads on the surface of the disassembly sleeve 9. In use, the protective cover 10 is aligned with the disassembly sleeve 9, and then the protective cover 10 is rotated to connect to the disassembly sleeve 9 by threads. The protective cover 10 can protect the disassembly sleeve 9 when it is not in use, preventing dust, debris and other objects from entering the disassembly sleeve 9, avoiding contamination or damage to the hexagonal tool groove 902, ensuring the normal use performance of the disassembly sleeve 9, and extending its service life. At the same time, the protective cover 10 can also prevent operators from accidentally touching the hexagonal tool groove 902 and getting injured, thus improving the safety of the device.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A railway sleeper rail bolt and nut removal apparatus comprising a T-shaped frame (1) characterised in that, The top of the T-shaped frame (1) is provided with a motor frame (2), and the motor frame (2) is fixedly connected to a replacement sleeve (8) through the output end of the T-shaped frame (1). Side seats (4) are symmetrically arranged on both sides of the T-shaped frame (1). A flip plate (5) is snapped into the side of the side seat (4). A fixed threaded rod (6) is threadedly connected to the side of the side seat (4) and the flip plate (5). The fixed threaded rod (6) is used to adjust the position of the flip plate (5). A disassembly sleeve (9) is threadedly connected to the bottom of the replacement sleeve (8).
2. A railway tie rail bolt and nut removal device according to claim 1, wherein, The top of the T-shaped frame (1) is symmetrically provided with protective plates (3), and the two protective plates (3) are located on both sides of the motor frame (2).
3. A railway tie rail bolt and nut removal device according to claim 1, wherein The flip plate (5) has a pressing pad (7) on its upward-facing side, which is used for protection.
4. The railway sleeper bolt and nut disassembly device according to claim 1, characterized in that, The inner wall of the replacement sleeve (8) is provided with a threaded seat (801), and the top of the disassembly sleeve (9) is provided with a mating sleeve (903). The threaded seat (801) and the mating sleeve (903) are threadedly connected.
5. A railway tie rail bolt and nut removal device according to claim 1, wherein, The surface of the disassembly sleeve (9) is provided with a tightening ring (901), and a hexagonal tool groove (902) is provided at the end of the disassembly sleeve (9) away from the replacement sleeve (8).
6. A railway tie rail bolt and nut removal device according to claim 1, wherein, The surface of the disassembly sleeve (9) is threaded with a protective cover (10).