Distance control device for coal mine cross line pipe

Abstract

The utility model discloses a distance control device for a coal mine cross line pipe, which relates to the technical field of coal mining and is mounted between a drainage pipeline and a communication cable which are vertically crossed. Comprising a hanging bracket hung at the bottom of a drainage pipeline, an isolation rod installed at the bottom of the hanging bracket and extending downwards and a supporting frame connected to the bottom of the isolation rod. The supporting frame comprises a supporting rod parallel to the drainage pipeline. The communication cable is supported at the bottom of the supporting rod. Therefore, the risk of explosion caused by ignition of gas by electric sparks generated by the communication cable due to too short distance is greatly reduced, heat can be prevented from being quickly transferred to the cable when high-temperature gas is conveyed by a pipeline or a fire occurs, a cable insulating layer is prevented from being melted and fired, time is bought for emergency disposal, the probability of simultaneous damage of the communication cable and the cable due to construction collision can be reduced, and the service life of the communication cable is prolonged. The composite fault risk is reduced, and the safety of coal mine underground operation and the stability of a communication system are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a coal mine cross-line control distance device. Background Technology

[0002] When underground coal mine drainage pipelines and communication cables cross perpendicularly, a safety distance of at least 300mm must be maintained. This is because the gas emitted from the drainage pipelines (mainly methane) is flammable and explosive. If the communication cables generate electrical sparks due to insulation, mechanical issues, or short circuits when crossing perpendicularly, the gas could easily ignite if the distance is too close. A 300mm gap reduces the probability of ignition and prevents explosions. Simultaneously, in the event of a fire or when the pipeline is transporting high-temperature gas, this distance can delay heat transfer to the cables, preventing the insulation layer from melting and igniting, buying time for emergency response, and avoiding simultaneous damage to both due to construction collisions, thus reducing the risk of compound failures.

[0003] However, it is difficult to guarantee this safe distance in actual operations. On the one hand, the underground construction environment is complex, and the extraction pipelines and communication cables are installed by different construction teams with varying skill levels and experience, making measurement and installation prone to non-standard practices, resulting in actual distances deviating from safety requirements. On the other hand, there is a lack of specialized devices underground to fix and position the distance between the two when they intersect vertically. Communication cables are easily pulled close to the pipeline by external forces, and there is no supporting positioning structure to prevent this, increasing safety risks. Utility Model Content

[0004] The purpose of this invention is to provide a coal mine cross-line control distance device that can accurately and stably maintain a safe distance between vertically crossing drainage pipes and communication cables in underground coal mines, effectively preventing safety accidents caused by excessive distance, while reducing electromagnetic interference and ensuring the stable operation of the communication system.

[0005] To achieve the above objectives, this utility model provides a coal mine cross-line control distance device, which is installed between a vertically intersecting drainage pipe and a communication cable; it includes a hanger suspended at the bottom of the drainage pipe, an isolation rod installed at the bottom of the hanger and extending downward, and a support frame connected to the bottom of the isolation rod; the support frame includes a support rod arranged parallel to the drainage pipe; the communication cable is supported at the bottom of the support rod.

[0006] By adopting the above structure, and installing this distance control device between the vertically intersecting extraction pipes and communication cables, using a hanger suspended from the bottom of the extraction pipes, with the isolation rod extending downwards and the support frame supporting the communication cables, a safe distance of at least 300mm can be effectively ensured between the extraction pipes and communication cables. This significantly reduces the risk of explosion caused by electrical sparks from the communication cables igniting gas due to excessive proximity. It also prevents the rapid transfer of heat to the cables during the transport of high-temperature gas or in the event of a fire, preventing the cable insulation from melting and igniting, thus buying time for emergency response. Furthermore, it reduces the probability of simultaneous damage to both due to construction collisions, lowers the risk of compound failures, and ensures the safety of underground coal mine operations and the stability of the communication system.

[0007] Preferably, the upper ends of the hanger are each suspended from the extraction pipe by a U-shaped steel bar. This suspension method has a simple structure, is easy and quick to install, and ensures that the hanger is stably fixed to the extraction pipe, providing a reliable support foundation for the entire control distance device.

[0008] Preferably, the isolation bar is detachably installed between the hanger and the support frame. On one hand, during installation, the detachable structure allows for flexible adjustment of the positions of various components according to actual conditions, ensuring the accuracy and stability of the installation. On the other hand, when a component is damaged, the detachable installation method allows maintenance personnel to easily disassemble and replace the damaged part without replacing the entire device, reducing maintenance costs and time, and improving maintenance efficiency. Furthermore, isolation bars of different lengths can be adjusted according to different control distance requirements to meet diverse safety distance control needs.

[0009] Preferably, the support rod is a circular structure, comprising a fixed rod at the center and a circular sleeve that rotatably covers the outside of the fixed rod; the communication cable is supported on the circular sleeve. When the communication cable is subjected to external force, the circular sleeve can rotate on the fixed rod. This rotational guiding effect can effectively prevent the communication cable from being excessively stretched and damaged when pulled, reduce wear and breakage caused by external forces, extend the service life of the communication cable, and ensure the normal operation of the communication system.

[0010] Preferably, the support frame further includes two opposing baffles, forming a cable channel for the communication cable to pass through; the two baffles are connected by multiple support rods; the multiple support rods form a supporting arc; the communication cable is supported on the supporting arc. The baffles can limit the movement of the communication cable, preventing it from detaching from the support frame and ensuring it remains within a safe distance; at the same time, the supporting arc increases the contact area between the communication cable and the support rods, making the stress on the communication cable more even, avoiding damage to the cable due to excessive stress at a single point, and improving the support stability and safety of the communication cable.

[0011] Preferably, the baffle is equipped with an isolation distance marker. This allows for a clear visual display of the safe distance between the extraction pipe and the communication cable. When inspecting and maintaining the device, staff can quickly and accurately determine whether the current distance meets safety requirements without complex measurements and calculations, greatly improving work efficiency. It also facilitates the daily management and maintenance of the device, ensuring safety during underground coal mine operations.

[0012] Preferably, four isolation rods are provided, symmetrically distributed in pairs on both sides of the bottom of the extraction pipe; the isolation rods on the same side are fixed to both sides of the same support rod. This design enhances the stability of the entire distance control device, allowing the support frame to more firmly support the communication cable, effectively resisting interference from various external forces underground, such as wind and equipment vibration, ensuring that the safe distance between the extraction pipe and the communication cable remains stable at all times, and providing a reliable guarantee for safe production in coal mines.

[0013] Preferably, a lifting ring is fixed to the bottom of the isolation rod, and the lifting ring is sleeved on the support rod.

[0014] Preferably, a bottom stop is also provided at the bottom of the supporting arc; the communication cable passes between the supporting arc and the bottom stop. The bottom stop can further restrict the position of the communication cable, prevent the communication cable from slipping off the supporting arc due to slack or other reasons during operation, ensure that the communication cable is always in the correct support position, maintain a safe distance between the extraction pipe and the communication cable, and ensure the safety of underground operations in coal mines and the stable operation of the communication system.

[0015] Preferably, the bottom stop includes at least three bars, located at the bottom and both sides of the supporting arc, respectively.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] This utility model provides a coal mine cross-line distance control device, which solves the technical problem that the distance between the drainage pipe and the communication cable cannot be stably controlled when they cross perpendicularly in the prior art. This utility model can accurately and stably maintain a safe distance between the drainage pipe and the communication cable that cross perpendicularly in the underground coal mine, effectively preventing safety accidents caused by excessive distance, while reducing electromagnetic interference and ensuring the stable operation of the communication system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a coal mine cross-line control distance device and its installation with extraction pipelines and communication cables according to this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a coal mine cross-line control distance device according to the present invention;

[0020] Figure 3 yes Figure 2 Top view of the device;

[0021] Figure 4 yes Figure 3 Sectional view of AA.

[0022] In the diagram, 1 is the extraction pipe, 2 is the communication cable, 3 is the hanger, 31 is the angle steel, 32 is the connecting rod, 33 is the U-shaped steel, 4 is the isolation rod, 41 is the lifting ring, 5 is the support frame, 51 is the support rod, 511 is the fixing rod, 512 is the circular sleeve, 52 is the baffle, 53 is the bottom stop, and I is the supporting arc. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] The orientations mentioned in this specification are based on the orientation of the coal mine cross-line control distance device under normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0025] like Figure 1 and Figure 2 As shown, a coal mine cross-line control distance device is installed between a vertically intersecting drainage pipe 1 and a communication cable 2. It includes a hanger 3 suspended from the bottom of the drainage pipe 1, a barrier rod 4 installed at the bottom of the hanger 3 and extending downwards, and a support frame 5 connected to the bottom of the barrier rod 4. The support frame 5 includes a support rod 51 arranged parallel to the drainage pipe 1; the communication cable 2 is supported at the bottom of the support rod 51. The hanger 3, barrier rod 4, and support frame 5 are made of stainless steel or galvanized explosion-proof material.

[0026] By installing hangers 3, isolation rods 4, and support frames 5, a safe distance can be accurately maintained between the drainage pipe 1 and the communication cable 2. This effectively prevents explosions caused by static electricity and electric sparks, avoids the direct risk of pipe leaks, reduces heat conduction and fire hazards, and protects against mechanical damage, greatly improving the safety of underground coal mine operations. Maintaining a safe distance also reduces the interference of electromagnetic noise generated by the drainage pipe on the communication cable, ensuring the stable operation of the communication system and guaranteeing the monitoring and scheduling of coal mine production.

[0027] The hanger 3 includes angle steel 31s installed on both sides of the bottom of the extraction pipe 1, with the angle steel 31s parallel to the length of the extraction pipe 1. The two angle steels 31 are fixedly connected by multiple connecting rods 32. The angle steels 31 and connecting rods 32 form a square frame structure. The hanger 3 can be suspended by hooks or wire binding. In this embodiment, for stability, the upper ends of the hanger 3 are each suspended from the extraction pipe 1 by a U-shaped steel 33. This suspension method is simple in structure, easy to install, and ensures that the hanger 3 is stably fixed to the extraction pipe 1.

[0028] The isolation rod 4 is detachably installed between the hanger 3 and the support frame 5. Specifically, an installation hole is provided on the horizontal side wall of the angle steel 31; threaded rods are fixed to the upper and lower ends of the isolation rod 4, passing through the installation hole and tightened with nuts, thus allowing the top of the isolation rod 4 to be detachably installed on the hanger 3. A support rod 51 is installed at the bottom of the isolation rod 4. Specifically, a detachable installation method is used: a lifting ring 41 is fixed to the bolt rod at the bottom of the isolation rod 4, and the lifting ring 41 is fitted onto the support rod 51. To insert the pin, simply remove the lifting ring 41 from the bottom of the isolation rod 4.

[0029] The support rod 51 has a circular structure, including a fixed rod 511 located at the center and a circular sleeve 512 that rotatably covers the outside of the fixed rod 511; the communication cable 2 is supported on the circular sleeve 512. The circular sleeve 512 can rotate on the fixed rod 511. When the communication cable 2 is subjected to external force, the circular sleeve 512 can rotate, thereby guiding the communication cable 2 and preventing damage to the communication cable 2 when pulled.

[0030] In another embodiment, such as Figure 3 and Figure 4 As shown, to reduce the stress on a single point of the communication cable 2, the support frame 5 also includes two opposing baffles 52, forming a cable channel for the communication cable 2 to pass through. The two baffles 52 are connected by multiple support rods 51, which form a supporting arc I. The communication cable 2 is supported on the supporting arc I. The baffles 52 limit the movement of the communication cable 2, preventing it from coming off. The supporting arc I increases the contact area between the communication cable 2 and the support rods 51, preventing uneven stress and damage to the communication cable 2. For easy marking, isolation distance markings are provided on the baffles 52; these markings can be printed. The isolation distance markings clearly show the safe distance between the extraction pipe 1 and the communication cable 2, facilitating inspection and maintenance by personnel.

[0031] Four isolation rods 4 are provided, symmetrically arranged in pairs on both sides of the bottom of the extraction pipe 1. The isolation rods 4 on the same side are fixed to both sides of the same support rod 51, thereby achieving stable four-point suspension.

[0032] A bottom stop bar 53 is also provided at the bottom of the supporting arc I; the communication cable 2 passes between the supporting arc I and the bottom stop bar 53. The bottom stop bar 53 can further restrict the position of the communication cable 2 and prevent the communication cable 2 from slack off and slipping off the supporting arc I.

[0033] Multiple bottom stops 53 are provided, evenly distributed at the bottom of the supporting arc I. This embodiment has three stops, located at the bottom and sides of the supporting arc I; in practical applications, four or two stops can also be used. Multiple bottom stops 53 provide more stable support and limiting function.

[0034] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A coal mine cross-line control distance device, installed between a vertically crossing extraction pipe and a communication cable; characterized in that: It includes a hanger suspended from the bottom of the extraction pipe, an isolation rod installed at the bottom of the hanger and extending downward, and a support frame connected to the bottom of the isolation rod; The support frame includes a support rod arranged parallel to the extraction pipe; the communication cable is supported at the bottom of the support rod.

2. The coal mine cross-line control distance device according to claim 1, characterized in that: The upper ends of the hanger are each suspended from the extraction pipe by a U-shaped steel bar.

3. A coal mine cross-line control distance device according to claim 1, characterized in that: The isolation rod can be detachably installed between the hanger and the support frame.

4. A coal mine cross-line control distance device according to claim 1, characterized in that: The support rod is a circular structure, which includes a fixed rod located at the center and a circular sleeve that rotates and covers the outside of the fixed rod; the communication cable is supported on the circular sleeve.

5. A coal mine cross-line control distance device according to claim 1, characterized in that: The support frame also includes two opposing baffles, which together form a cable channel for the communication cable to pass through; the two baffles are connected by multiple support rods; the multiple support rods form a supporting arc; and the communication cable is supported on the supporting arc.

6. A coal mine cross-line control distance device according to claim 5, characterized in that: The baffle is marked with isolation distance markings.

7. A coal mine cross-line control distance device according to claim 5, characterized in that: The isolation rods are provided in four pairs, which are symmetrically distributed on both sides of the bottom of the extraction pipe; the isolation rods on the same side are respectively fixed on both sides of the same support rod.

8. A coal mine cross-line control distance device according to claim 5, characterized in that: The bottom of the isolation rod is fixed with a lifting ring, which is sleeved on the support rod.

9. A coal mine cross-line control distance device according to claim 5, characterized in that: A bottom stop is also provided at the bottom of the supporting arc; the communication cable passes between the supporting arc and the bottom stop.

10. A coal mine cross-line control distance device according to claim 9, characterized in that: The bottom stop includes at least three bars, located at the bottom and both sides of the supporting arc, respectively.

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