A power supply protection device for coal mines

Abstract

The utility model discloses a coal mine power supply protection device, including mine power supply box body, be equipped with a plurality of wiring port on the mine power supply box body, the wiring port below is fixed with the support plate, the wiring port top is fixed with the external board of pairs, the horizontal rotation of connecting has the connecting shaft between the external board, fixed with the pressing plate on the connecting shaft, the utility model belongs to coal mine power supply protection technical field, and specifically refers to a coal mine power supply protection device.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine power supply protection technology, specifically referring to a coal mine power supply protection device. Background Technology

[0002] In coal mine power supply systems, the power supply box is a key power distribution and control device, and the reliable operation of its lines is directly related to the smooth operation of the entire coal mine production.

[0003] Some existing technologies employ cable fixing methods, such as the proposed method in patent CN202321270053.6, which uses an electric telescopic rod to move an arc-shaped block that matches the cable, thereby fixing the cable.

[0004] However, this method requires connecting the electric telescopic mast to electricity and equipping it with complex control circuits for precise control. This not only increases the cost and complexity of the device but also raises the probability of malfunctions. In the harsh environment of underground coal mines, excessive electrical connections and complex control systems are more susceptible to interference, leading to malfunctions. Furthermore, the maintenance and repair of equipment such as electric telescopic masts are quite cumbersome, requiring a significant investment of time and effort from specialized technicians, which to some extent affects the continuity and reliability of power supply in coal mines. Utility Model Content

[0005] In view of the above situation and to overcome the shortcomings of the existing technology, this utility model provides a coal mine power supply protection device, which effectively solves the problem that the cable fixing method is relatively complicated and inconvenient for subsequent maintenance.

[0006] To achieve the above functions, the technical solution adopted by this utility model is as follows: A coal mine power supply protection device includes a mine power supply box body, the mine power supply box body is provided with a plurality of wiring ports, a support plate is fixed below the wiring ports, a pair of external connecting plates is fixed above the wiring ports, a connecting shaft is horizontally rotatably connected between the external connecting plates, and a pressure plate is fixed on the connecting shaft.

[0007] Preferably, the support plate has a horizontal structure at both ends and a concave structure in the middle. The concave surface of the support plate is covered with a rubber pad, and the bottom of the pressure plate is an arc-shaped surface that matches the concave part of the support plate, and it is provided with anti-slip texture.

[0008] Preferably, the axis of the connecting shaft is located at an eccentric position on the pressure plate.

[0009] Preferably, an L-shaped external frame is fixed to the outside of the external plate, and a plug rod is horizontally slidably inserted through the external frame. An end block is fixed to the outer end of the plug rod. The end of the connecting shaft is provided with a number of slots arranged in a ring at equal intervals. The plug rod is inserted into the slots. A spring is sleeved on the plug rod, and the two ends of the spring are respectively fixed to the external frame and the end block.

[0010] Preferably, the spring is a stainless steel compression spring with a pre-compression force of not less than 20N.

[0011] Preferably, a handle is fixed to the outer wall of the pressure plate.

[0012] Compared with the prior art, the present invention, by adopting the above-described structure, achieves the following beneficial effects:

[0013] 1. By setting a support plate below the junction box and a rotatable pressure plate above it, the cable can be fixed. This design does not require complicated electrical control. The cable can be pressed tightly onto the support plate by simply rotating the pressure plate manually. The operation is simple and quick, which greatly improves the efficiency of cable fixing.

[0014] 2. The pressure plate can accommodate cables of different diameters. It is inserted into the slot by the plug rod, and with the action of the spring, the position of the pressure plate is limited and fixed, which prevents the pressure plate from loosening in harsh environments such as vibration in coal mines, and further enhances the reliability of cable fixing. Attached Figure Description

[0015] Figure 1 This utility model provides a schematic diagram of the overall structure of a coal mine power supply protection device. Figure 1 ;

[0016] Figure 2 This utility model provides a schematic diagram of the overall structure of a coal mine power supply protection device. Figure 2 ;

[0017] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0018] Figure 4 This is a side view of a coal mine power supply protection device proposed in this utility model.

[0019] The components include: 1. Mining power supply box body; 2. Wiring port; 3. Support plate; 4. External plate; 5. Connecting shaft; 6. Pressure plate; 7. External frame; 8. Insert rod; 9. End block; 10. Slot; 11. Spring; and 12. Handle rod. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, the present invention proposes a coal mine power supply protection device, including a mine power supply box body 1. The mine power supply box body 1 is provided with a plurality of wiring ports 2. A support plate 3 is fixed below the wiring ports 2. A pair of external connecting plates 4 are fixed above the wiring ports 2. A connecting shaft 5 is horizontally rotatably connected between the external connecting plates 4. A pressure plate 6 is fixed on the connecting shaft 5. A handle 12 is fixed on the outer wall of the pressure plate 6 to facilitate pushing the pressure plate 6 to rotate. The axis of the connecting shaft 5 is located at the eccentric position of the pressure plate 6, which can be used for cables of different diameters.

[0023] like Figure 1 , 2 As shown in Figure 4, the support plate 3 has a horizontal structure at both ends and a concave structure in the middle. To further improve stability, an arc-shaped receiving groove along the cable direction can be set in the center of the support plate 3. The concave surface of the support plate 3 is covered with a rubber pad. The bottom of the pressure plate 6 is an arc-shaped surface that matches the concave part of the support plate 3, and it is provided with anti-slip texture, which makes it easy to press the cable stably on the support plate 3.

[0024] like Figure 3 As shown, an L-shaped external frame 7 is fixed to the outside of the external plate 4. A plug rod 8 is horizontally slidably inserted on the external frame 7. An end block 9 is fixed to the outer end of the plug rod 8. The end of the connecting shaft 5 is provided with several slots 10 arranged in a ring at equal intervals. The plug rod 8 is inserted into the slot 10. A spring 11 is sleeved on the plug rod 8. The two ends of the spring 11 are fixed to the external frame 7 and the end block 9 respectively. The spring 11 is a stainless steel compression spring with a pre-compression force of not less than 20N.

[0025] In practical use, install the coal mine power supply protection device in a suitable position according to the design requirements, ensure that the device is stable and reliable, connect the wiring port 2 to the power supply cable correctly, place the cable that needs to be fixed on the support plate 3, and ensure that the cable is centered.

[0026] Pull the end block 9 outward to move the insertion rod 8 out of the slot 10. The spring 11 is compressed. Hold the handle 12 and rotate the pressure plate 6 with the connecting shaft 5 as the center. Since the connecting shaft 5 is located at the eccentric circle position of the pressure plate 6, the bottom of the pressure plate 6 gradually approaches the cable during the rotation. When the bottom of the pressure plate 6 is in close contact with the cable and the appropriate clamping force is reached, stop rotating the pressure plate 6 and release the end block 9. Under the action of the spring 11, the insertion rod 8 automatically inserts into the slot 10, limiting and fixing the position of the connecting shaft 5 and the pressure plate 6, thereby firmly pressing the cable onto the support plate 3.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A coal mine power supply protection device, comprising a mine power supply box body (1), wherein the mine power supply box body (1) is provided with a plurality of wiring ports (2), characterized in that: A support plate (3) is fixed below the wiring port (2), and a pair of external plates (4) are fixed above the wiring port (2). A connecting shaft (5) is horizontally rotatably connected between the external plates (4), and a pressure plate (6) is fixed on the connecting shaft (5).

2. The coal mine power supply protection device according to claim 1, characterized in that: The support plate (3) has a horizontal structure at both ends and a concave structure in the middle. The concave surface of the support plate (3) is covered with a rubber pad. The bottom of the pressure plate (6) is an arc-shaped surface that matches the concave part of the support plate (3) and has anti-slip texture.

3. A coal mine power supply protection device according to claim 2, characterized in that: The axis of the connecting shaft (5) is located at the eccentric position of the pressure plate (6).

4. A coal mine power supply protection device according to any one of claims 1-3, characterized in that: An L-shaped external frame (7) is fixed to the outside of the external plate (4). A plug rod (8) is horizontally slidably inserted on the external frame (7). An end block (9) is fixed to the outer end of the plug rod (8). Several slots (10) are arranged in a ring at equal intervals at the end of the connecting shaft (5). The plug rod (8) is inserted into the slot (10). A spring (11) is sleeved on the plug rod (8). The two ends of the spring (11) are fixed to the external frame (7) and the end block (9) respectively.

5. A coal mine power supply protection device according to claim 4, characterized in that: The spring (11) is a stainless steel compression spring with a pre-compression force of not less than 20N.

6. A coal mine power supply protection device according to claim 1, characterized in that: A handle (12) is fixed to the outer wall of the pressure plate (6).

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