Sleeper broken bolt taking-out device
By designing a broken bolt removal device for sleepers, the broken bolts are removed by rotating the connecting rod, support column and handle, which solves the problem of complex operation in the existing technology, realizes efficient and convenient broken bolt removal, and protects the sleeper structure.
Patent Information
- Application Number
- CN202423091630.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In the prior art, the method for removing broken bolts from Type III sleepers is complicated and not suitable for on-site conditions, especially when high-strength bolts are used, which are difficult to remove efficiently.
A device for removing broken bolts from sleepers is designed, which includes a connecting rod, a support column, a stabilizing seat and a handle. The support column and the connecting rod are rotated by rotating the handle. The detachable connection between the nut and the screw is combined with a suction cup for stable installation on the sleeper to achieve the rotational removal of the broken bolts.
It simplifies the process of removing broken bolts, improves the convenience and efficiency of operation, protects other structures on the sleeper from damage, and is suitable for actual on-site conditions.
Smart Images

Figure CN223477562U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of railway construction technology, and more specifically, it relates to a device for removing broken bolts from railway sleepers. Background Technology
[0002] Uses and importance of Type III railway sleepers:
[0003] Type III sleepers are commonly used in railway construction and maintenance. They must support the rails, maintain their position, and transfer the enormous pressure from the rails to the track bed. Type III sleepers must possess a certain degree of flexibility and elasticity; they cannot be too stiff or too soft. When a train passes, they can deform appropriately to cushion the pressure, but they must return to their original shape as much as possible after the train has passed.
[0004] Material and manufacturing process of Type III sleepers:
[0005] Type III railway sleepers are typically made of cement and steel reinforcement. They require steam demolding for one-time molding, resulting in a smooth exterior, a hard interior, and multiple threaded steel bars. For example, a 30kg / 600mm gauge cement sleeper is 1200mm long, 150mm high, 200mm wide at the bottom, and 120mm wide at the top, with an overall trapezoidal shape. It contains five 8mm thick high-strength threaded steel bars as main reinforcement and multiple 4mm thick high-strength threaded steel bars as stirrups. The cement grade is C40.
[0006] After prolonged exposure to wind and sun and the pressure of trains, the bolts at the connection points of Type III sleepers are prone to breakage, which can easily lead to safety hazards. Traditionally, broken bolts are removed using a water drill to remove the entire concrete around the bolt hole and the broken bolt as a whole, followed by re-anchoring the pre-embedded sleeve. Alternatively, a drill bit can be used to drill a hole in the bolt and then remove it. However, the traditional water drilling method is complex and unsuitable for actual field conditions.
[0007] When drilling to remove high-strength bolts used in Type III sleepers on railways, the drilling method is difficult to operate and inconvenient to use on site. Utility Model Content
[0008] The technical problem to be solved by this utility model is to provide a device for removing broken bolts from railway sleepers, which addresses the shortcomings of existing technologies and solves the problem that existing methods for removing broken bolts are not applicable to on-site conditions and are complicated to operate.
[0009] The present invention discloses a device for removing broken bolts from a rail sleeper, comprising a connecting rod, a support column, a stabilizing seat, and a handle. The connecting rod has a connecting end for connecting to the broken bolt, and the other end of the connecting rod is detachably connected to the support column. Handles are fixedly installed on both sides of the upper part of the support column. The stabilizing seat is installed on the rail sleeper, and the support column is movably installed on the stabilizing seat.
[0010] As a further improvement, a screw is fixedly installed at one end of the connecting rod near the support column, and a nut corresponding to the screw is fixedly installed at the bottom of the support column, with the nut screwed onto the screw.
[0011] Furthermore, a sleeve is fitted onto the handle, and the outer surface of the sleeve is provided with a rubber anti-slip layer.
[0012] Furthermore, a sleeve surrounding the broken bolt is placed on the sleeper.
[0013] Furthermore, the stabilizing seat includes a fixed plate and two fixed rods. The fixed plate has a through hole, and the support column is movably installed in the through hole. The fixed rods are fixedly installed on both sides of the bottom of the fixed plate, and one end of the fixed rod is installed on the sleeper.
[0014] Furthermore, one end of the fixing rod is equipped with a suction cup, which is attached to the sleeper.
[0015] Beneficial effects
[0016] The advantages of this utility model are:
[0017] 1. This utility model is equipped with a connecting rod, a support column, and two handles. By rotating the handles, the support column and the connecting rod are rotated. The connecting rod, which is connected to the broken bolt, drives the broken bolt to rotate, thereby removing the broken bolt. The support column and the connecting rod are detachably connected by a nut and a screw, which facilitates the disassembly and assembly of the device and makes it easy to store.
[0018] 2. This utility model features a stabilizing seat that is mounted on the sleeper via a suction cup at the bottom, facilitating its installation and removal. A support seat is movably mounted on the stabilizing seat, allowing operators to rotate the handle in one direction and improving work efficiency.
[0019] 3. This utility model has a sleeve placed on the sleeper to surround the broken bolt. The sleeve can protect other structures on the sleeper from damage during welding. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the installation of the broken bolt removal device of this utility model;
[0021] Figure 2 This is a schematic diagram of the broken bolt removal device of this utility model;
[0022] Figure 3 This is a front view of the broken bolt removal device of this utility model;
[0023] Figure 4 This is a side view of the broken bolt removal device of this utility model;
[0024] Figure 5 This is a top view of the broken bolt removal device of this utility model;
[0025] Figure 6 This is a schematic diagram of the installation of the stabilizer of this utility model.
[0026] Among them: 1-connecting rod, 2-screw, 3-nut, 4-support column, 5-handle, 6-sleeve, 7-tube, 8-stabilizing seat, 81-fixing plate, 82-fixing rod, 83-suction cup, 9-broken bolt, 10-sleeve. Detailed Implementation
[0027] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.
[0028] See Figures 1-6 This utility model discloses a device for removing broken bolts from railway sleepers. It includes a connecting rod 1, a support column 4, a stabilizing seat 8, and two handles 5. The connecting rod 1 has a connecting end that connects to the broken bolt 9, and one end of the connecting rod 1 is welded to the broken bolt 9. The broken bolt 9 is removed by rotating the connecting rod 1.
[0029] Support column 4 is a 15cm long steel bar. Support column 4 is strong enough to be not easily damaged.
[0030] The other end of the connecting rod 1 is detachably connected to the support column 4. A screw 2 is fixedly installed at the end of the connecting rod 1 near the support column 4. A nut 3 corresponding to the screw 2 is fixedly installed at the bottom of the support column 4, and the nut 3 is screwed onto the screw 2. The detachable connection between the connecting rod 1 and the support column 4 facilitates the assembly and disassembly of the device and makes it easy to store.
[0031] like Figure 6 As shown, the support column 4 is movably mounted on the stabilizing seat 8. The stabilizing seat 8 is mounted on the sleeper 10 and includes a fixing plate 81 and two fixing rods 82. The fixing plate 81 has through holes, and the support column 4 is movably mounted in the through holes. The fixing rods 82 are fixedly mounted on both sides of the bottom of the fixing plate 81, and one end of the fixing rod 82 is mounted on the sleeper 10. One end of the fixing rod 82 is equipped with a suction cup 83, which adheres to the sleeper 10. By adhering to the sleeper 10 with the suction cup 83, it is convenient for the operator to keep the handle rotating in one direction, avoiding instability during rotation and improving work efficiency.
[0032] Handles 5 are fixedly installed on both sides of the upper part of the support column 4. A sleeve 7 is fitted onto the handle 5, and the outer surface of the sleeve 7 is provided with a rubber anti-slip layer. By rotating the handle 5, the support column 4 is rotated. The rubber anti-slip layer can increase the friction between the operator and the sleeve 7, thereby improving work efficiency.
[0033] A sleeve 6 is placed on the sleeper to surround the broken bolt 9. The sleeve 6 is a 30mm diameter iron sleeve that protects the other structures on the sleeper 10 from damage during welding.
[0034] The working principle of this utility model is as follows:
[0035] When it is necessary to remove the broken bolt 9 from the sleeper 10, move the stabilizer 8 above the broken bolt 9, align the through hole of the stabilizer 8 with the broken bolt 9, and then attach the two suction cups 83 at the bottom of the stabilizer 8 to the sleeper 10. Place the sleeve 6 around the broken bolt 9, and then insert the support column 4 into the through hole. Make the connecting end of the connecting rod 1 and the broken bolt 9 contact the broken bolt 9, and then weld the connecting end and the broken bolt 9 together. Then, hold the sleeve 7 and turn the handle 5. The handle 5 drives the support column 4 and the connecting rod 1 to rotate, and the connecting rod 1 drives the broken bolt 9 to rotate, thereby removing the broken bolt 9.
[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.
Claims
1. A device for removing broken bolts from railway sleepers, characterized in that, It includes a connecting rod (1), a support column (4), a stabilizing seat (8), and a handle (5). The connecting rod (1) has a connecting end that connects to the broken bolt (9). The other end of the connecting rod (1) is detachably connected to the support column (4). The support column (4) has handles (5) fixedly installed on both sides above it. The stabilizing seat (8) is installed on the sleeper (10), and the support column (4) is movably installed on the stabilizing seat (8).
2. The sleeper broken bolt removal device according to claim 1, characterized in that, A screw (2) is fixedly installed at one end of the connecting rod (1) near the support column (4), and a nut (3) corresponding to the screw (2) is fixedly installed at the bottom of the support column (4), and the nut (3) is screwed onto the screw (2).
3. The sleeper broken bolt removal device according to claim 1, characterized in that, The handle (5) is fitted with a sleeve (7), and the outer surface of the sleeve (7) is provided with a rubber anti-slip layer.
4. The sleeper broken bolt removal device according to claim 1, characterized in that, A sleeve (6) surrounding the broken bolt (9) is placed on the sleeper (10).
5. The sleeper broken bolt removal device according to claim 1, characterized in that, The stabilizing seat (8) includes a fixing plate (81) and two fixing rods (82). The fixing plate (81) has a through hole, and the support column (4) is movably installed in the through hole. The fixing rods (82) are fixedly installed on both sides of the bottom of the fixing plate (81), and one end of the fixing rod (82) is installed on the sleeper (10).
6. A device for removing broken bolts from railway sleepers according to claim 5, characterized in that, One end of the fixing rod (82) is provided with a suction cup (83), which is attached to the sleeper (10).