A combined device for dismounting a cable lead-in device for electrical equipment in a coal mine

Abstract

A kind of combined device for disassembling and assembling coal mine underground electrical equipment cable introduction device, multiple functions are integrated in one, for the compression nut type introduction device, through self-tightening wrench frame and burr grinding cone head, compression nut can be quickly and effectively disassembled, for the U-shaped pin type quick connector introduction device, through the synergistic effect of long rod, pull rod and hammer cylinder, deformed and rusted U-shaped pin can be accurately positioned and processed, quick disassembly is realized, the drawbacks of traditional tool operation being complicated and time-consuming are avoided, the time of electrical equipment disassembly and maintenance is greatly shortened, the work efficiency is improved, and the continuity of coal mine production is ensured.The combined device integrates multiple functions in one overall structure, compared with the traditional way of carrying multiple maintenance tools, the number and volume of tools are greatly reduced, which is convenient for maintenance personnel to carry and operate in the narrow space underground, and also facilitates the storage and management of tools, improves the use efficiency and management level of tools.

Description

Technical Field

[0001] This utility model relates to the technical field of cable entry device disassembly equipment, specifically a combination device for disassembling and assembling cable entry devices for underground electrical equipment in coal mines. Background Technology

[0002] In underground coal mines, electrical equipment generally adopts explosion-proof, explosion-proof and intrinsically safe, and intrinsically safe types of explosion protection. The cable entry devices are mostly compression nut type entry devices. Furthermore, with the development of intelligent coal mines, more and more electrical equipment cables are connected using U-shaped pin quick-connect connections to improve the stability and convenience of cable connections.

[0003] Due to the harsh environment underground in coal mines, electrical equipment needs to be disassembled and maintained during face replacement or routine maintenance. For cable entry devices with clamping nuts, the clamping nut must be removed first, and then the rubber ring must be ground smooth according to the cable's outer diameter. For cable entry devices using U-pin connections, issues such as U-pin deformation and corrosion can hinder disassembly. Using traditional tools for disassembly and assembly is not only time-consuming and labor-intensive, but maintenance personnel also need to carry multiple tools to complete the work. Therefore, it is necessary to propose an efficient and convenient quick disassembly and assembly tool. Utility Model Content

[0004] The purpose of this utility model is to provide a combination device for disassembling and assembling cable entry devices for electrical equipment in coal mines, which can quickly disassemble and reassemble clamping nut type entry devices and U-pin type quick connector entry devices, thus solving the problems in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a combined device for disassembling and assembling a cable introduction device for electrical equipment in coal mines, including a long rod, one end of which is provided with a bent pulling rod, and the other end of which is provided with a connecting screw. A locking nut and a detachable self-tightening wrench frame are installed on the connecting screw. A burr-removing cone is installed at the end of the self-tightening wrench frame away from the long rod. A swing hammer cylinder that can move along the length direction is also installed on the long rod, and the swing hammer cylinder can move to contact the locking nut. The outer periphery of the long rod is provided with a polymer coating. An anti-smashing protective ring is provided on the end face of the swing hammer cylinder near the locking nut. A rubber washer that cooperates with the anti-smashing protective ring is provided on the end face of the locking nut near the swing hammer cylinder. A safety limiting platform is provided on the end of the long rod near the pulling rod. The swing hammer cylinder is located on the long rod between the safety limiting platform and the locking nut. A positioning screw is also installed on the swing hammer cylinder. Rotating the positioning screw can fix the swing hammer cylinder in a designated position on the long rod. The self-tightening wrench frame has a limiting tooth on its inner side near the long rod end. A threaded hole is located at the end of the self-tightening wrench frame away from the long rod, and a limiting screw is fitted into this hole. A burr-reducing cone is installed at the end of the limiting screw that extends out of the self-tightening wrench frame. The limiting screw located within the self-tightening wrench frame can extend into the position of the limiting tooth. The limiting screw also has a scale indicating the outer diameter of the nut. A positioning groove is mounted on the end of the limiting screw located within the self-tightening wrench frame via an end-face bearing. The positioning groove can rotate relative to the limiting screw. A swingable nut positioning block is hinged within the positioning groove, and the limiting screw can move the nut positioning block to the position of the limiting tooth.

[0006] The positive effects of this utility model are as follows: The combined device for disassembling and assembling electrical equipment cables in coal mines, as described in this utility model, integrates multiple functions. For clamping nut type cable introduction devices, the self-tightening wrench frame and burr-reducing cone head enable quick and effective disassembly of the clamping nut. For U-pin type quick connector introduction devices, the coordinated action of components such as the long rod, pulling rod, and hammer cylinder allows for precise positioning and handling of deformed or corroded U-pins, achieving rapid disassembly. This avoids the drawbacks of cumbersome and time-consuming operation of traditional tools, greatly shortening the time for disassembly, assembly, and maintenance of electrical equipment, improving work efficiency, and ensuring the continuity of coal mine production. This combined device integrates multiple functions into a single structure, significantly reducing the number and volume of tools compared to the traditional method of carrying multiple maintenance tools. This makes it easier for maintenance personnel to carry and operate in the confined space underground, while also facilitating tool storage and management, improving tool utilization efficiency and management level. Through reasonable design and optimization, and by utilizing the lever principle and the impact force of the swing hammer, maintenance personnel can complete the disassembly and assembly work with less force. Moreover, this device can be widely used in the disassembly and assembly of cable entry devices for various underground electrical equipment in coal mines, greatly reducing labor intensity and improving work comfort and sustainability. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0008] Figure 2 This is the front view of this utility model;

[0009] Figure 3 yes Figure 2 An enlarged view of the sectional view along the AA direction;

[0010] Figure 4 yes Figure 3 An enlarged view of the BB-axis sectional view;

[0011] Figure 5 yes Figure 2 A magnified view of part of I;

[0012] Figure 6 This is a schematic diagram of the disassembly of the U-shaped pin quick connector introduction device according to this utility model;

[0013] Figure 7 This is a schematic diagram of the disassembly of the clamping nut type inlet device according to this utility model. Detailed Implementation

[0014] This utility model describes a combination device for disassembling and assembling cable entry devices for underground electrical equipment in coal mines, such as... Figure 1 and Figure 2 As shown, it includes a long rod 1, one end of which is provided with a bent lifting rod 2. The lifting rod 2 adopts the form of a pointed cone hook, which can be quickly inserted into the U-shaped pin at any angle and pried out using the pointed cone and fulcrum.

[0015] The other end of the long rod 1 is provided with a connecting screw 3. A locking nut 4 and a detachable self-tightening wrench frame 5 are installed on the connecting screw 3. A burr-removing cone 6 is installed at the end of the self-tightening wrench frame 5 away from the long rod 1. The self-tightening wrench frame 5 can disassemble the nuts in different types of clamping nut type introduction devices. The burr-removing cone 6 can repair burrs on rubber of different inner diameters, making it convenient for workers to quickly replace cables. The self-tightening wrench frame 5 can be the end structure of the multi-size self-tightening wrench with Chinese patent publication number "CN201930507248.0". The burr-removing cone 6 can be an existing conical friction part with a frosted surface on the outer circumference of the friction part to achieve frictional trimming of burrs.

[0016] The long rod 1 is also equipped with a swing hammer cylinder 7 that can move along its length. The swing hammer cylinder 7 can move to contact the locking nut 4. For U-shaped pins that are severely corroded or deformed and cannot be pried out directly after the puller rod 2 is inserted, the impact force of the swing hammer cylinder 7 on the locking nut 4 can be used to pull out the sturdy U-shaped pin. After the locking nut 4 is removed, the swing hammer cylinder 7 can be inserted and installed onto the long rod 1 at one end of the connecting screw 3.

[0017] The entire device is used underground in coal mines. To ensure necessary safety and explosion-proof performance, and to prevent electric sparks from being generated during the movement of the hammer cylinder 7 and its impact with the locking nut 4, such as... Figure 3 As shown, the outer periphery of the long rod 1 may be provided with a polymer coating 8, and the end face of the hammer cylinder 7 near the locking nut 4 is provided with an anti-smashing guard ring 9. The end face of the locking nut 4 near the hammer cylinder 7 is provided with a rubber washer 10 that cooperates with the anti-smashing guard ring 9. The polymer coating 8, the anti-smashing guard ring 9, and the rubber washer 10 can prevent electric sparks from being generated during the movement and collision of the hammer cylinder 7. The setting of the anti-smashing guard ring 9 and the rubber washer 10 can effectively buffer hard impacts and can effectively extend the service life of the hammer cylinder 7.

[0018] Furthermore, a safety limiting platform 11 may be provided on one end of the long rod 1 near the lifting rod 2. The hammer cylinder 7 is located on the long rod 1 between the safety limiting platform 11 and the locking nut 4. The diameter of the safety limiting platform 11 is larger than the diameter of the hammer cylinder 7, which is used to limit the hammer cylinder 7 and prevent the hand holding the hammer cylinder 7 from contacting the lifting rod 2 with the front pointed cone hook during use, thus preventing injury to the hand.

[0019] To prevent the hammer cylinder 7 from being fixed to the long rod 1 when not in use, thus avoiding uncontrolled movement of the hammer cylinder 7 under gravity and interference with disassembly operations, such as... Figure 4 As shown, a positioning screw 12 can also be installed on the hammer cylinder 7. Rotating the positioning screw 12 can fix the hammer cylinder 7 at a designated position on the long rod 1.

[0020] Furthermore, the self-tightening wrench frame 5 has a limiting tooth 13 on the inner side near the end of the long rod 1. The limiting tooth 13 can adaptively clamp nuts of different outer diameter types. A threaded hole is opened at the end of the self-tightening wrench frame 5 away from the long rod 1. A limiting screw 14 is installed in the threaded hole. A burr-removing cone 6 is installed at the end of the limiting screw 14 that protrudes from the self-tightening wrench frame 5. The length of the burr-removing cone 6 extending out of the self-tightening wrench frame 5 can be adjusted by rotating the limiting screw 14 so that it can be inserted into sleeves of different length types in the nut-pressing device to repair the burrs on the internal rubber ring.

[0021] The limiting screw 14 located inside the self-tightening wrench frame 5 can extend into the position of the limiting tooth 13. The limiting screw 14 is also provided with a scale for the outer diameter of the nut. The limiting screw 14 can be used to limit the nut to be removed. According to the outer diameter of the nut to be removed, the scale on the limiting screw 14 is adjusted to the specified position, and the hole left in the self-tightening wrench frame 5 can be adapted to the outer diameter of the nut to be removed.

[0022] Furthermore, in order to allow the end of the limiting screw 14 to adapt to the shape of the hexagonal nut, such as... Figure 5 As shown, the end of the limiting screw 14 located in the self-tightening wrench frame 5 is equipped with a positioning groove 16 through the end face bearing 15. The positioning groove 16 can rotate relative to the limiting screw 14. A swingable nut positioning block 17 is hinged in the positioning groove 16. The limiting screw 14 can drive the nut positioning block 17 to move to the position of the limiting tooth 13.

[0023] The end face bearing 15 allows the positioning slot 16 to rotate relative to the limiting screw 14. When the length of the limiting screw 14 entering the self-tightening wrench frame 5 is adjusted, the limiting screw 14 will rotate itself. The end face bearing 15 ensures that the positioning slot 16 and the nut positioning block 17 inside are always in a position that matches the nut to be removed. The swingable nut positioning block 17 can adapt to nuts of different outer diameters. After the limiting screw 14 is rotated and tightened, the nut can be locked by the nut positioning block 17 and the limiting teeth 13 on both sides of the self-tightening wrench frame 5, so that the long rod 1 can be rotated to drive the nut to rotate and remove it.

[0024] Furthermore, the assembly and disassembly device for cable entry into underground electrical equipment in coal mines described in this utility model also has the following advantages:

[0025] Ensuring operational safety: The polymer coating 8 on the outer periphery of the long rod 1 has excellent insulation, anti-slip, and wear-resistant properties, effectively reducing the safety risks caused by leakage or tool slippage during operation; the anti-smashing guard ring 9 on the hammer cylinder 7 and the rubber washer 10 on the locking nut 4 work together to buffer and protect during hammer swinging operations, preventing direct collision between the hammer cylinder 7 and the locking nut 4 to generate splashes or sparks, thus avoiding injury to maintenance personnel; the design of the safety limit platform 11 restricts the movement range of the hammer cylinder 7, preventing it from slipping and injuring people, thus comprehensively ensuring the operational safety of maintenance personnel in the harsh underground environment.

[0026] Improving maintenance quality: The design of the burr-refining cone 6 allows for easy refinishing of the rubber ring after disassembling the clamping nut type inlet device, making its surface smooth, ensuring the sealing and stability of the cable after reinstallation, and improving the explosion-proof performance of the electrical equipment; the limiting teeth 13, limiting screws 14, and nut positioning blocks 17 on the self-tightening wrench frame 5 can precisely control the disassembly force and position of the nut, avoiding damage to the nut or loosening of the cable connection due to excessive force or improper operation, thereby improving maintenance quality and extending the service life of the electrical equipment.

[0027] Enhanced tool applicability: This combined device features a highly versatile and adaptable design with adjustable and replaceable components. For example, the hammer cylinder 7 can be fixed to a designated position on the long rod 1 via the positioning screw 12, meeting the needs of different disassembly scenarios; the limiting screw 14 is equipped with a scale indicating the outer diameter of the nut, facilitating precise adjustments by maintenance personnel for different nut specifications; the nut positioning block 17 can rotate and swing relative to the limiting screw 14, adapting to nuts of different shapes and sizes, enabling the device to be widely used in the disassembly and assembly of cable entry devices for various underground electrical equipment in coal mines.

[0028] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A combination device for disassembling and assembling cable entry devices for underground electrical equipment in coal mines, characterized in that: It includes a long rod (1), one end of which is provided with a bent pulling rod (2), and the other end of which is provided with a connecting screw (3). A locking nut (4) and a detachable self-tightening wrench frame (5) are installed on the connecting screw (3). A burr-removing cone (6) is installed on the end of the self-tightening wrench frame (5) away from the long rod (1). A hammer cylinder (7) that can move along the length direction is also installed on the long rod (1). The hammer cylinder (7) can move and contact the locking nut (4).

2. The assembly and disassembly device for cable entry into underground electrical equipment in coal mines according to claim 1, characterized in that: The outer periphery of the long rod (1) is provided with a polymer coating (8), the end face of the hammer cylinder (7) near the locking nut (4) is provided with an anti-smashing ring (9), and the end face of the locking nut (4) near the hammer cylinder (7) is provided with a rubber washer (10) that cooperates with the anti-smashing ring (9).

3. The assembly and disassembly device for cable entry into underground electrical equipment in coal mines according to claim 1, characterized in that: A safety limiting platform (11) is provided on one end of the long rod (1) near the lifting rod (2). The hammer cylinder (7) is located on the long rod (1) between the safety limiting platform (11) and the locking nut (4). A positioning screw (12) is also installed on the hammer cylinder (7). Rotating the positioning screw (12) can fix the hammer cylinder (7) at the designated position on the long rod (1).

4. The assembly and disassembly device for cable entry into underground electrical equipment in coal mines according to claim 1, characterized in that: The self-tightening wrench frame (5) has a limiting tooth (13) on the inner side near the end of the long rod (1). A threaded hole is opened at the end of the self-tightening wrench frame (5) away from the long rod (1). A limiting screw (14) is installed in the threaded hole. A burr-reducing cone (6) is installed at the end of the limiting screw (14) that passes through the self-tightening wrench frame (5). The limiting screw (14) located in the self-tightening wrench frame (5) can extend into the position of the limiting tooth (13). A scale for the outer diameter of the nut is also provided on the limiting screw (14).

5. The assembly and disassembly device for cable entry into underground electrical equipment in coal mines according to claim 4, characterized in that: The end of the limiting screw (14) located in the self-tightening wrench frame (5) is equipped with a positioning slot (16) through the end face bearing (15). The positioning slot (16) can rotate relative to the limiting screw (14). A swingable nut positioning block (17) is hinged in the positioning slot (16). The limiting screw (14) can drive the nut positioning block (17) to move to the position of the limiting tooth (13).

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