Cable protection device for preventing rock burst in coal mine

Abstract

The utility model relates to the technical field of cable protection devices, in particular to a cable protection device for preventing impact ground pressure in a coal mine, which comprises a fixed base, an anchor hole is arranged at the top of the fixed base, a sliding rail is vertically arranged on one side of the fixed base, a sliding seat is connected onto the sliding rail in a sliding manner, and the sliding seat is connected with a cable. A damping spring and a damper are connected between the sliding seat and the bottom of the fixed base, a mounting plate is fixedly connected to one side of the sliding seat, a hook is fixedly connected to the mounting plate, a limiting plate is horizontally connected to an opening of the hook in an inserted mode, and the limiting plate and the hook are fixedly connected through a bolt; rubber pads are arranged on the inner sides of the limiting plates and the hooks; the sliding seat slides along the sliding rail and is matched with the damping spring and the damper to absorb longitudinal impact energy, so that the impact force borne by the cable is remarkably reduced, and the cable is prevented from falling off or throwing due to instant impact.

Description

Technical Field

[0001] This utility model relates to the field of cable protection device technology, and more specifically to a cable protection device for preventing rockbursts in coal mines. Background Technology

[0002] Rockburst is a violent dynamic disaster caused by the instantaneous release of elastic deformation energy of coal and rock masses during coal mining. It is often accompanied by coal and rock ejection, shock waves, and severe roadway vibration. In such disasters, underground cables, due to their simple fixing method (usually using rigid cable hooks suspended from the roadway wall) and lack of buffer protection mechanisms, are extremely susceptible to being detached or thrown by the shock wave, leading to power outages and secondary injuries to escaping personnel. Utility Model Content

[0003] The purpose of this utility model is to provide a cable protection device for coal mines against rockbursts, which can effectively cope with the instantaneous vibration, air wave impact and displacement load of rockbursts, and reduce the risk of cable detachment and throwing.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A cable protection device for preventing rockbursts in coal mines includes a fixed base with anchor holes at the top. A slide rail is vertically mounted on one side of the fixed base, and a slide block is slidably connected to the slide rail. A shock-absorbing spring and a damper are connected between the slide block and the bottom of the fixed base. A mounting plate is fixedly connected to one side of the slide block, and a hook is fixedly connected to the mounting plate. A limit plate is horizontally inserted into the opening of the hook, and the limit plate and the hook are fixedly connected by bolts. Rubber pads are provided on the inner sides of both the limit plate and the hook.

[0006] Furthermore, the slide rail is a T-shaped guide rail, and a T-shaped groove matching the T-shaped guide rail is provided on one side of the slide block.

[0007] Furthermore, a slot is provided at the end of the hook away from the mounting plate, and a placement groove is provided on the mounting plate opposite the slot, and the limiting plate is inserted into the slot and the placement groove.

[0008] Furthermore, the end of the limiting plate away from the mounting plate is provided with an L-shaped connecting part, and through holes are provided on both the upper and lower sides of the slot. The section of the limiting plate located in the slot is provided with a first connecting hole facing the through hole, and the L-shaped connecting part is provided with a second connecting hole facing the through hole. The bolt passes through the through hole, the first connecting hole and the second connecting hole, and a lock nut is threaded to the bottom of the bolt.

[0009] Furthermore, the surface of the rubber pad is provided with anti-slip texture.

[0010] Furthermore, the rubber pad is embedded with a steel wire mesh.

[0011] Furthermore, the hooks and limiting plates are provided in multiple sets, and the multiple sets of hooks are distributed at equal intervals along the longitudinal direction of the mounting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model uses a sliding block to slide along a slide rail, and works with a shock-absorbing spring and damper to absorb longitudinal impact energy, significantly reducing the impact force on the cable and preventing the cable from falling off or being thrown due to instantaneous impact; the limiting plate is horizontally inserted into the hook opening and fixed by bolts, forming a combination of rigid constraint and friction protection of elastic rubber pad, which not only prevents the cable from falling off, but also avoids hard friction damage to the cable sheath. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a partial sectional view of the present invention.

[0016] 1. Fixed base; 101. Anchor hole; 2. Slide rail; 3. Slide block; 301. T-shaped slide groove; 4. Shock-absorbing spring; 5. Damper; 6. Mounting plate; 601. Placement groove; 7. Hook; 701. Slot; 702. Through hole; 8. Limiting plate; 801. First connecting hole; 802. Second connecting hole; 81. L-shaped connecting part; 9. Bolt; 10. Locking nut. Detailed Implementation

[0017] like Figure 1 and Figure 2 As shown, a cable protection device for preventing rockburst in coal mines includes a fixed base 1. An anchor hole 101 is provided on the top of the fixed base 1. A slide rail 2 is vertically arranged on one side of the fixed base 1. A slide block 3 is slidably connected to the slide rail 2. A shock-absorbing spring 4 and a damper 5 are connected between the slide block 3 and the bottom of the fixed base 1. An mounting plate 6 is fixedly connected to one side of the slide block 3. A hook 7 is fixedly connected to the mounting plate 6. A limit plate 8 is horizontally inserted into the opening of the hook 7. The limit plate 8 and the hook 7 are fixedly connected by bolts 9. Rubber pads are provided on the inner sides of both the limit plate 8 and the hook 7.

[0018] The slide rail 2 is a T-shaped guide rail, and the slide block 3 has a T-shaped groove 301 on one side that matches the T-shaped guide rail. By utilizing the guiding and anti-detachment characteristics of the T-shaped structure, the slide block 3 is ensured to slide stably on the slide rail 2, avoiding lateral displacement or detachment of the slide block 3 from the slide rail 2 during the impact process, and ensuring the continuous and effective operation of the buffer mechanism.

[0019] The hook 7 has a slot 701 at the end away from the mounting plate 6, and the mounting plate 6 has a placement groove 601 opposite to the slot 701. The limiting plate 8 is inserted into the slot 701 and the placement groove 601.

[0020] The limiting plate 8 is provided with an L-shaped connecting part 81 at the end away from the mounting plate 6. The upper and lower sides of the slot 701 are provided with through holes 702. The section of the limiting plate 8 located in the slot 701 is provided with a first connecting hole 801 facing the through hole 702. The L-shaped connecting part 81 is provided with a second connecting hole 802 facing the through hole 702. The bolt 9 passes through the through hole 702, the first connecting hole 801 and the second connecting hole 802. The bottom of the bolt 9 is threaded with a locking nut 10.

[0021] The surface of the rubber pad is provided with anti-slip texture; the anti-slip texture increases the friction between the rubber pad and the cable surface, further preventing the cable from sliding in the clamping space.

[0022] The rubber pad is embedded with a steel wire mesh, which enhances the tear resistance of the rubber pad, avoids the failure of the rubber layer under long-term impact, and extends the replacement cycle of key components.

[0023] The hooks 7 and the limiting plate 8 are provided in multiple sets, and the multiple sets of hooks 7 are distributed at equal intervals along the longitudinal direction of the mounting plate 6.

[0024] Working principle:

[0025] The fixed base 1 is fixed to the roadway wall by anchor bolts through anchor holes 101 to form a stable support foundation; the slide 3 is connected to the slide rail 2 through T-shaped slide groove 301 and can slide up and down along the slide rail 2; the mounting plate 6 is fixed on the slide 3, and the hook 7 cooperates with the limiting plate 8 through slot 701 and placement groove 601 to clamp the cable and lock it with bolt 9 and locking nut 10.

[0026] When a rock burst occurs, the violent vibration of the tunnel wall is transmitted to the slide block 3 through the fixed base 1. The slide block 3 slides along the slide rail 2, compressing or stretching the shock-absorbing spring 4. At the same time, the damper 5 consumes the vibration energy and reduces the instantaneous displacement of the slide block 3. The hook 7 and the limit plate 8 clamp the cable with rubber pads to limit its lateral displacement and prevent it from being thrown by the shock wave.

[0027] After the impact ends, the elastic force of the shock-absorbing spring 4 pushes the slide 3 to reset, and the damper 5 suppresses the vibration during the reset process, so that the device returns to its initial state.

[0028] The combination design of the plug-in limit plate 8 and bolt 9 allows downhole personnel to quickly unlock and replace damaged parts, shortening the time for post-disaster repairs.

[0029] This utility model, through the slide rail 2, shock-absorbing spring 4 and damper 5, can effectively resist the longitudinal shock waves commonly found in underground coal mines, reducing the risk of cable detachment; through the design of the limiting plate 8, bolt 9 and rubber pad, it ensures that the cable remains fixed under extreme impact, avoiding being thrown and injuring people.

[0030] This technical solution achieves the core objectives of impact resistance, anti-detachment, and easy maintenance through the synergistic effect of the longitudinal buffer system and the modular cable fixing structure, providing an efficient, reliable, and low-cost solution for cable protection in coal mines.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cable protection device for preventing rockbursts in coal mines, characterized in that: The system includes a fixed base (1), with an anchor hole (101) on the top of the fixed base (1). A slide rail (2) is vertically arranged on one side of the fixed base (1). A slide block (3) is slidably connected to the slide rail (2). A shock-absorbing spring (4) and a damper (5) are connected between the slide block (3) and the bottom of the fixed base (1). An installation plate (6) is fixedly connected to one side of the slide block (3). A hook (7) is fixedly connected to the installation plate (6). A limit plate (8) is horizontally inserted into the opening of the hook (7). The limit plate (8) and the hook (7) are fixedly connected by bolts (9). Rubber pads are provided on the inner sides of both the limit plate (8) and the hook (7).

2. The cable protection device for preventing rockbursts in coal mines as described in claim 1, characterized in that: The slide rail (2) is a T-shaped guide rail, and a T-shaped groove (301) matching the T-shaped guide rail is provided on one side of the slide block (3).

3. The cable protection device for preventing rockbursts in coal mines as described in claim 1, characterized in that: The hook (7) has a slot (701) at one end away from the mounting plate (6), and the mounting plate (6) has a placement groove (601) opposite the slot (701). The limiting plate (8) is inserted into the slot (701) and the placement groove (601).

4. The cable protection device for preventing rockbursts in coal mines as described in claim 3, characterized in that: The limiting plate (8) is provided with an L-shaped connecting part (81) at one end away from the mounting plate (6). The slot (701) has through holes (702) on both the upper and lower sides. The section of the limiting plate (8) located in the slot (701) has a first connecting hole (801) facing the through hole (702). The L-shaped connecting part (81) has a second connecting hole (802) facing the through hole (702). The bolt (9) passes through the through hole (702), the first connecting hole (801), and the second connecting hole (802). The bottom of the bolt (9) is threaded with a locking nut (10).

5. The cable protection device for preventing rockbursts in coal mines as described in claim 1, characterized in that: The surface of the rubber pad is provided with anti-slip texture.

6. The cable protection device for preventing rockbursts in coal mines as described in claim 1, characterized in that: The rubber pad is embedded with steel wire mesh.

7. The cable protection device for preventing rockbursts in coal mines as described in claim 1, characterized in that: The hooks (7) and the limiting plate (8) are provided in multiple sets, and the multiple sets of hooks (7) are distributed at equal intervals along the longitudinal direction of the mounting plate (6).

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