A coal mine underground cable anti-rolling protection device

Abstract

The utility model discloses a kind of anti-rolling protection devices of coal mine underground cable, including seat, the arc-shaped slot is set in the seat top, the seat one end and the other end are all set with multiple grooves, multiple The spring is placed in the groove, multiple The cylinder is inserted in the groove, the bottom of multiple The spring is respectively contacted with the bottom of corresponding groove inner wall. The utility model places cable in the arc-shaped slot of seat, prevents it from shifting when protecting;Spring and cylinder are provided in the two rows of grooves in seat from bottom to top, cooperate with the top plate body of cylinder and the first block body on the plate body arc, and rely on spring deformation and rubber pad to absorb and disperse rolling impact force, make up the defect of insufficient protection buffering of existing;Arc structure makes rolling stress uniform, reduces plate body deformation;Cylinder and plate body cooperatively form multi-layer protection, avoid equipment direct cable, greatly reduce cable pressure break, insulation damage probability, reduce electric leakage hidden danger, ensure underground operation.

Description

Technical Field

[0001] This utility model relates to the field of mining-related technology, and in particular to a protective device against crushing of underground cables in coal mines. Background Technology

[0002] In underground coal mine operations, cables, as critical components for power transmission and signal transmission, are typically laid along the surface of underground roadways. However, the complex underground working environment, with frequent passage of various mobile equipment such as mine cars and hydraulic support transport vehicles, easily causes damage to cables laid on the surface. Existing cable protection methods mostly involve simply laying protective plates or conduits. These methods lack effective buffer structures, and when equipment runs over them, the protective structures are easily deformed and damaged, failing to effectively disperse the impact force. This leaves the cables still at risk of being crushed and having their insulation damaged, not only affecting normal underground operations but also potentially causing safety hazards such as electrical leakage. Therefore, there is an urgent need for a cable protection device with good buffering performance that can effectively resist equipment crushing. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-crushing protection device for underground cables in coal mines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A protective device for preventing crushing of underground cables in coal mines includes a base body with an arc-shaped groove on the top. Multiple grooves are formed at one and the other ends of the base body, each groove containing a spring. A column is inserted into each groove. The bottom of each spring contacts the bottom of the corresponding groove's inner wall, and the top of each spring contacts the bottom of the corresponding column. The columns are fixedly connected to the same plate. A first block is fixedly connected to the first plate, and the top of the first block has an arc-shaped design.

[0005] Preferably, two through slot blocks are fixedly connected to one end and the other end of the plate, and bolts are movably passed through and matched to each other in multiple through slot blocks. Threaded holes are opened at one end and the other end of the base, and multiple bolts are threadedly connected to the corresponding threaded holes.

[0006] Preferably, multiple reflective stickers are fixedly connected at equal intervals on the top of the first block.

[0007] Preferably, a second block is fixedly connected to one end and the other end of the base, and multiple holes are equally spaced on both second blocks.

[0008] Preferably, one or both ends of the two second blocks are machined with bevels, and the plurality of holes are located at the corresponding bevels.

[0009] Preferably, all of the aforementioned holes are stepped holes.

[0010] Preferably, rubber pads are fixedly connected to one end and the other end of the plate, and the two rubber pads are respectively placed opposite to the corresponding columns.

[0011] The beneficial effects of this utility model are as follows: 1. Through the cooperation between the set body, groove, column, spring, plate, first block and rubber pad, the arc groove processed by the set body realizes the stable placement of the cable and avoids the cable displacement during the protection process. At the same time, the spring and column set in the two rows of grooves of the set body from bottom to top, together with the plate fixed to the column and the arc-shaped first block on the top of the plate, can not only use the spring compression deformation and the rubber pad to absorb and disperse the crushing impact of the equipment, make up for the deficiency of the buffer performance of the existing protection method, but also make the crushing force more uniform through the arc structure of the arc-shaped first block, reduce the deformation and damage of the plate. Furthermore, the column and plate work together to form a multi-layer protection, avoid the equipment to directly contact the cable, greatly reduce the probability of cable crushing and insulation layer damage, thereby reducing safety hazards such as leakage and ensuring normal underground operation; 2. Through the fit between the plate, through-slot block, bolt, seat and threaded hole, the bolt is threaded into the threaded hole of the seat and inserted into the corresponding through-slot block of the plate. This fit structure can not only prevent the column from being pulled out of the seat groove when the plate moves upward, avoiding the protection failure caused by the separation of components under working conditions such as downhole vibration, but also provide guidance for the lifting and moving of the plate, preventing the column from being stuck in the groove or unevenly stressed due to plate offset, ensuring the stable operation of spring buffer, column support and other functions, and improving the structural reliability and protection continuity of the device in complex downhole environments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an anti-rollover protection device for underground cables in coal mines proposed in this utility model; Figure 2 for Figure 1 Structural diagram of the central support, groove, and column; Figure 3 for Figure 1 A schematic diagram of the disassembled structure; Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the second block in the middle; Figure 5 for Figure 3 A schematic diagram of the structure of the middle seat, groove, and threaded hole.

[0013] In the diagram: 1. Base; 2. Groove; 3. Column; 4. Spring; 5. Plate; 6. First block; 7. Through slot block; 8. Bolt; 9. Threaded hole; 10. Rubber pad; 11. Reflective sticker; 12. Second block; 13. Hole. Detailed Implementation

[0014] 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.

[0015] Example 1, referring to Figures 1 to 5 A protective device against crushing of underground cables in coal mines includes a base 1 with an arc-shaped groove on the top for placing underground cables. Multiple grooves 2 are provided at one and the other ends of the base 1 to provide installation space for springs 4 and columns 3. Springs 4 are placed in each groove 2, and columns 3 are inserted into each groove 2. The bottoms of the springs 4 contact the bottom of the inner wall of their respective grooves 2, and the tops of the springs 4 contact the bottom of their respective columns 3. The columns 3 are fixedly connected to the same plate 5, which can transfer the external force borne by the plate 5 to the springs 4. A first block 6 is fixedly connected to the first plate 5. The top of the first block 6 has an arc-shaped design, which allows the force exerted by the equipment during crushing to be more evenly distributed on the plate 5, reducing component damage caused by localized force concentration and forming a multi-layered protective structure for the cable.

[0016] In this embodiment, two through-slot blocks 7 are fixedly connected to one end and the other end of the plate 5. Bolts 8 are movably inserted through and matched to each other in multiple through-slot blocks 7. Threaded holes 9 are provided at one end and the other end of the base 1. Multiple bolts 8 are threadedly connected to the corresponding threaded holes 9. This not only limits the movement range of the plate 5, preventing the column 3 from detaching from the groove 2 of the base 1 when the plate 5 moves upward, thus avoiding component separation and protection failure under conditions such as downhole vibration; but also provides guidance for the lifting and lowering movement of the plate 5, ensuring that the plate 5 always moves in a fixed direction and preventing the plate 5 from deviating. The displacement causes the column 3 to become stuck or experience uneven force on the inner wall of the groove 2, ensuring the stable operation of the spring 4's buffering and column 3's supporting functions. Multiple reflective stickers 11 are fixedly connected at equal intervals to the top of the first block 6. In the dim working environment of underground coal mines, these reflect the lights of mine cars, hydraulic support transport vehicles, and other equipment, helping the equipment driver clearly identify the location of the protective device and preventing the equipment from deviating from the normal travel route and crushing the device. This further improves the safety of the device when used underground and reduces accidental collisions or crushing caused by poor visibility. A second block 12 is fixedly connected to one end and the other end of the base 1. Each block 12 has multiple holes 13 spaced evenly spaced. These holes 13 are used to engage external fasteners to fix the entire block to the ground. One or both ends of each of the two second blocks 12 are machined with bevels to allow the wheels of mining vehicles and other equipment to smoothly approach or leave the device. The multiple holes 13 are located at corresponding bevels and are stepped holes. This allows the head of the fastener to be embedded inside the hole 13 during installation, preventing the head of the fastener from protruding from the surface of the second block 12 and thus preventing damage to the fastener during equipment operation. It also reduces coal dust accumulation at the head of the fastener, facilitating subsequent maintenance of the fastener. To facilitate inspection, maintenance, or disassembly, and improve the ease of maintenance of the device, rubber pads 10 are fixedly connected to one end and the other end of the plate 5. The two rubber pads 10 are respectively placed opposite the corresponding columns 3. When the plate 5 is rolled down, the rubber pads 10 will move down with the plate 5 and eventually contact the top of the seat 1. The rubber pads 10 are elastic and can cooperate with the spring 4 to form a double buffer structure, further absorbing and dispersing the impact force generated by the rolling of the equipment, avoiding the wear of components caused by direct rigid contact between the plate 5 and the seat 1, extending the service life of the device, and improving the buffer protection effect on the cable.

[0017] The working principle of this embodiment is as follows: In use, the bolt 8 is first threadedly connected to the corresponding threaded hole 9 at the base 1, and the bolt 8 is inserted into the corresponding through groove block 7 of the plate 5 to complete the device assembly. Then, the arc-shaped groove processed in the base 1 is used to place the cable to achieve stable positioning of the cable and avoid displacement during the protection process. When the downhole equipment rolls, the first arc-shaped block 6 at the top of the plate 5 is subjected to force first, which drives the plate 5 fixed to the column 3 to move down, thereby pushing the column 3 in the two rows of grooves 2 of the base 1 to compress the spring 4. At this time, the spring 4 is compressed and deformed, and together with the rubber pad 10, it absorbs and disperses the rolling pressure. The impact force and the arc-shaped structure of the first block 6 make the rolling force more uniform, reducing the deformation and damage of the plate 5; at the same time, the cooperation between the bolt 8 and the through-slot block 7 provides guidance for the lifting and moving of the plate 5, preventing the plate 5 from shifting and causing the column 3 to get stuck or the force to be uneven. It can also limit the column 3 from getting out of the groove 2 when the plate 5 moves upward, avoiding the separation of components and the failure of protection. Finally, the column 3 and the plate 5 work together to form a multi-layer protection, avoiding direct contact between the equipment and the cable, reducing the probability of cable breakage and insulation damage, reducing the risk of leakage and ensuring normal downhole operation.

[0018] 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 protective device for preventing crushing of underground cables in coal mines, comprising a base (1), characterized in that, The top of the seat (1) is provided with an arc-shaped groove. One end of the seat (1) and the other end are provided with multiple grooves (2). Each of the multiple grooves (2) is provided with a spring (4). Each of the multiple grooves (2) is inserted with a column (3). The bottom of each of the multiple springs (4) is in contact with the bottom of the inner wall of the corresponding groove (2). The top of each of the multiple springs (4) is in contact with the bottom of the corresponding column (3). The multiple columns (3) are fixedly connected to the same plate (5). The plate (5) is fixedly connected with a first block (6). The top of the first block (6) is arc-shaped.

2. The anti-rollover protection device for underground cables in coal mines according to claim 1, characterized in that, Two through slot blocks (7) are fixedly connected to one end and the other end of the plate (5). Bolts (8) are movably passed through the multiple through slot blocks (7) and are adapted to each other. Threaded holes (9) are opened at one end and the other end of the seat (1). Multiple bolts (8) are threadedly connected to the corresponding threaded holes (9).

3. The anti-rollover protection device for underground cables in coal mines according to claim 1, characterized in that, Multiple reflective stickers (11) are fixedly connected at equal intervals on the top of the first block (6).

4. The anti-rollover protection device for underground cables in coal mines according to claim 1, characterized in that, The base (1) is fixedly connected to a second block (12) at one end and the other end, and the two second blocks (12) are provided with multiple holes (13) at equal intervals.

5. The anti-rollover protection device for underground cables in coal mines according to claim 4, characterized in that, Both of the second blocks (12) have bevels at one end or the other end, and the plurality of holes (13) are located at the corresponding bevels.

6. The anti-rollover protection device for underground cables in coal mines according to claim 4, characterized in that, All of the aforementioned holes (13) are stepped holes.

7. The anti-rollover protection device for underground cables in coal mines according to claim 1, characterized in that, Rubber pads (10) are fixedly connected to one end and the other end of the plate (5), and the two rubber pads (10) are respectively placed opposite to the corresponding column (3).

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