A cold-modified anchor for pipe sleeve separation

Abstract

This utility model belongs to the field of rail transit technology, specifically a cold-modification anchor for separating nylon sleeves. It includes a torque wrench and a reaction arm bracket. Multiple fastening bolts are threaded into one side of the reaction arm bracket, and the reaction arm is fixedly connected to one end of the torque wrench. The cold-modification anchor uses a cutting principle to cut regular grooves into the nylon sleeve. The torque wrench is then turned counterclockwise to loosen the sleeve, generating a reaction force for removal. The anchor cutting tool and the sleeve are interference-fitted; the internal threads of the sleeve are damaged during hammering, ensuring no separation during rotation, ultimately achieving non-destructive removal of the failed sleeve. This utility model uses cold-modification anchor technology to separate nylon sleeves, reducing intermediate steps, quickly removing sleeves, and significantly improving work efficiency. It also reduces labor intensity, eliminating the need for water drills or forceful disassembly, and the automated wrench operation reduces worker burden. It avoids dust pollution from water drills, meeting green construction requirements; and it precisely removes the sleeve without damaging the track bed structure, improving track quality and train safety.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to a cold-modified anchor for pipe sleeve separation. Background Technology

[0002] Track equipment is the cornerstone of safe subway operation, and older lines are gradually experiencing track equipment aging issues. Among the equipment under the jurisdiction of the track maintenance department, the failure of nylon sleeves has been a long-standing problem, and the number of failures increases with the length of operation and operational density. This is particularly serious in elevated and open-air track areas, where the failure of pre-embedded nylon sleeves in the overall track bed leads to loose bolts, and in some areas, bolts completely fail, preventing fasteners from securing the rails and causing track geometry misalignment. This problem has become a major safety hazard affecting subway operations.

[0003] In existing technologies, a hot-melt anchor conversion machine is generally used to heat the material to a high temperature, insert it into the failed nylon sleeve, melt the nylon sleeve at high temperature to form a cross-shaped groove, and then use a manual tool to rotate and remove the failed sleeve.

[0004] However, the existing methods for removing nylon sleeves are time-consuming, and the heating rod is prone to loosening, affecting work efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the problems of long operation time and easy loosening of the heating rod in the above-mentioned background art for the nylon sleeve removal method, and to propose a cold-modified anchor for sleeve separation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cold-mounted anchor for pipe sleeve separation includes a torque wrench and a reaction arm bracket. A plurality of fastening bolts are threaded into one side of the reaction arm bracket, and a reaction arm is fixedly connected to one end of the torque wrench.

[0008] Preferably, a handle is fixedly connected to the top of the reaction arm support.

[0009] Preferably, multiple limiting blocks are fixedly connected to both sides of the reaction arm bracket.

[0010] Preferably, the inner bottom of the reaction arm bracket is fixedly connected with multiple limiting plates.

[0011] Preferably, the end of the reaction arm away from the torque wrench is rotatably fitted with a bearing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the nylon sleeve is separated by cold anchoring technology, which can reduce intermediate steps, quickly remove the sleeve, and significantly improve work efficiency; reduce labor intensity, eliminate the need for water drills or violent disassembly, and reduce the burden on workers by automating the operation with wrenches; avoid dust pollution generated by water drills, which meets the requirements of green construction; and accurately remove the sleeve without damaging the track bed structure, thus improving track quality and driving safety.

[0014] 2. This utility model of cold-rolled anchor modification can efficiently remove aging and damaged plastic sleeves and replace them with new ones, ensuring the reliability of the railway fastening system, thereby improving railway safety and stability, reducing the risk of safety accidents caused by fastening problems. Compared with traditional methods, this device improves the efficiency of plastic sleeve removal, reduces labor and time costs, and shortens the maintenance cycle, thus reducing long-term maintenance costs. Attached Figure Description

[0015] Figure 1 This is a top view of a cold-modified anchor for pipe sleeve separation proposed in this utility model;

[0016] Figure 2 This is a side view of a cold-modified anchor for pipe sleeve separation proposed in this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the reaction arm support in a cold-modified anchor for pipe sleeve separation proposed in this utility model.

[0018] In the diagram: 1 Torque wrench, 2 Reaction arm bracket, 3 Fastening bolt, 4 Reaction arm, 5 Handle, 6 Limit block, 7 Limit plate, 8 Bearing, 9 Rail, 10 Sleeper. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-3 A cold-modified anchor for pipe sleeve separation includes a torque wrench 1 and a reaction arm bracket 2. Multiple limiting blocks 6 are fixedly connected to both sides of the reaction arm bracket 2 to limit the position of the bearing 8.

[0021] In this embodiment, multiple limiting plates 7 are fixedly connected to the inner bottom of the reaction arm bracket 2 to facilitate the connection and fixation of the bottom of the reaction arm bracket 2 with the rail 9, and a handle 5 is fixedly connected to the top of the reaction arm bracket 2 to facilitate the taking and putting away of the reaction arm bracket 2.

[0022] In this embodiment, a plurality of fastening bolts 3 are threaded into one side of the reaction arm bracket 2 to facilitate the connection of the reaction arm bracket 2 to the rail 9. One end of the torque wrench 1 is fixedly connected to a reaction arm 4, which is used to act as a reaction arm for the torque wrench 1.

[0023] In this embodiment, the end of the reaction arm 4 away from the torque wrench 1 is rotatably sleeved with a bearing 8, and the bearing 8 moves with the sleeve until it is completely removed.

[0024] In this embodiment, the specific operation steps of the cold anchor conversion technology are as follows:

[0025] S1: Preliminary preparations: Install the snap ring to connect the wrench reaction arm 4, and put the socket on the wrench head and insert the pin to prevent it from falling off;

[0026] S2: Removal steps: Move the rotating buckle to the right, press and hold the start button of torque wrench 1, and rotate torque wrench 1 counterclockwise. Due to the cutting principle of the anchor knife and the interference fit with the sleeve, the thread is broken to form a fixed connection. When the sleeve is unscrewed, torque wrench 1 pushes out along the reaction arm bracket 2, and bearing 8 moves with the sleeve until it is completely removed.

[0027] S3: Replacement and follow-up treatment: Use special tools to separate the modified anchor knife from the old sleeve, clean the installation hole, insert the new nylon sleeve, install the bolts and tighten them to complete the anchor replacement.

[0028] In this embodiment, the cold-modified anchor cutter uses a cutting principle to cut regular grooves into the nylon sleeve. A torque wrench (2000 N torque) is then used to loosen it counterclockwise, generating a reaction force before the sleeve is removed. The anchor cutter and sleeve are interference-fitted; the internal threads of the sleeve are damaged during hammering to ensure it does not separate during rotation, ultimately achieving non-destructive removal of the failed sleeve.

[0029] In this embodiment, the nylon sleeve is separated by cold anchoring technology, which reduces intermediate steps, allows for rapid sleeve removal, and significantly improves work efficiency; reduces labor intensity, eliminates the need for water drills or violent disassembly, and automates wrench operation to reduce the burden on workers; avoids dust pollution from water drills, meeting the requirements of green construction; and ensures precise disassembly without damaging the track bed structure, improving track quality and driving safety.

[0030] 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 cold-fit anchor for pipe sleeve separation, comprising a torque wrench (1) and a reaction arm bracket (2), characterized in that: The reaction arm bracket (2) has multiple fastening bolts (3) threaded into one side, and the torque wrench (1) has a reaction arm (4) fixedly connected to one end.

2. A cold split anchor for separating a pipe sleeve according to claim 1, characterized in that: The top of the reaction arm support (2) is fixedly connected to a handle (5).

3. A cold split anchor for separating a pipe sleeve according to claim 1, characterized in that: Multiple limiting blocks (6) are fixedly connected to both sides of the reaction arm bracket (2).

4. A cold split anchor for separating a pipe sleeve according to claim 1, characterized in that: The inner bottom of the reaction arm bracket (2) is fixedly connected with multiple limiting plates (7).

5. A cold split anchor for separating a pipe sleeve according to claim 1, characterized in that: The end of the reaction arm (4) away from the torque wrench (1) is rotatably fitted with a bearing (8).

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