Mining machine electric power circuit protection device

Abstract

The utility model discloses an electric power circuit protection device of a mining machine, and belongs to the field of ore extraction equipment. The device comprises a bottom plate, a mounting cover is fixedly arranged above the bottom plate, an adjusting plate and an adjusting part for driving the adjusting plate to move are slidably mounted in the mounting cover in the width direction of the mounting cover, and two opposite wall surfaces of the mounting cover and the adjusting plate are each rotationally connected with a row of rotating wheels in the vertical axial direction. According to the utility model, the frictional resistance of the mining machine cable in the displacement process can be effectively reduced, the abrasion is reduced, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of ore mining equipment, and more specifically, relates to a power line protection device for a mining machine. Background Art

[0002] Mining machines are one of the important equipment for realizing the mechanization and modernization of ore production. In the longwall mining face, the working mechanism breaks the ore from the ore body and loads it into the face conveyor. When working, the mining machine moves at the set traction speed so that the ore breaking and loading processes can be carried out continuously. In the process of the mining machine moving, in order to cooperate with the movement of the mining machine, a cable trough is generally provided, and the cable is placed in the cable trough. The cable is displaced in the cable trough under the drag of the mining machine, and the cable trough protects the displaced cable. However, in the mining process, the ore blocks often inevitably enter the cable trough from the gap, and rub against the cable during the movement of the cable, hindering the movement of the cable and wearing the cable.

[0003] The Chinese patent application number is CN202221234310.6, and the publication date is November 18, 2022. A cable trough for coal mines is disclosed, including a top cover and a plurality of cable trough monomers fixed to the side wall of the coal mine, wherein the plurality of cable trough monomers are arranged at intervals along the direction of the side wall of the coal mine, and the top cover is provided on the top openings of the plurality of cable trough monomers, and the cable trough also includes a first shielding sheet and a fixing member. The first shielding sheet can prevent the ore blocks from entering the cable trough monomer from the gap between the two cable trough monomers, thereby effectively reducing the wear of the cable caused by the friction with the ore blocks entering the cable trough monomer.

[0004] The above scheme is the same as the situation encountered during iron ore mining, and the hardness of iron ore is higher. However, in the above design, although the first shielding sheet can shield the cable trough, the cable will still rub against the wall of the cable trough when being pulled, which not only makes the cable difficult to pull, but also causes wear on the cable surface and is easily damaged after long-term use. Therefore, it is necessary to design a power line protection device to solve this problem. Summary of the invention

[0005] 1. Problems to be solved

[0006] In view of the problem that when the existing power line protection device is used for the mining machine cable, the cable is difficult to drag and suffers severe wear during the displacement process, the utility model provides a mining machine power line protection device, which can effectively reduce the friction resistance of the mining machine cable during the displacement process, reduce wear and increase the service life of the cable.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A mining machine power line protection device comprises a base plate, a mounting cover is fixedly arranged above the base plate, an adjustment plate and an adjustment member for driving the adjustment plate to move are slidably mounted inside the mounting cover along its width direction, and a row of rotating wheels with a vertical axis are rotatably connected to two opposite wall surfaces of the mounting cover and the adjustment plate.

[0010] As a further improvement of the technical solution, an arc groove is provided on the circumferential surface of the rotating wheel.

[0011] As a further improvement of the technical solution, the installation cover is in an inverted concave-shaped structure, and a gap is provided between the bottom of the installation cover and the base plate for the cable to pass through.

[0012] As a further improvement of the technical solution, a plurality of mounting frames are fixedly connected to one side of the base plate, and a plurality of mounting frames are fixedly connected to one side of the mounting cover.

[0013] As a further improvement of the technical solution, the mounting frame is an inverted L-shaped structure.

[0014] As a further improvement of the technical solution, two cylindrical holes are provided on the side of the mounting cover, and a fixing rod which is slidably inserted into the cylindrical holes is fixedly connected to the side of the adjustment plate.

[0015] As a further improvement of the technical solution, the adjusting member includes a threaded rod rotatably connected to the side of the adjusting plate through a bearing, and the threaded rod is inserted into one side of the mounting cover through threaded fitting.

[0016] As a further improvement of the technical solution, a handle located outside the mounting cover is fixedly connected to a side of the threaded rod away from the adjustment plate.

[0017] As a further improvement of the technical solution, a plurality of spaced-apart mounting parts are fixedly connected to the two opposite wall surfaces of the mounting cover and the adjustment plate, and each mounting part includes two support plates arranged up and down, and a vertical axial rotating shaft is rotatably connected between the two support plates through a bearing, and the rotating wheel is sleeved on the rotating shaft.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model discloses a mining machine power line protection device, wherein the installation cover can protect the cable and the rotating wheel to prevent the cable surface and the arc groove from entering the ore block, and when the cable is pulled, the rotating wheel can rotate along with the pulling of the cable, thereby reducing the moving resistance of the cable and the friction damage on the surface of the cable when being pulled, thereby effectively increasing the service life of the cable in the mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the adjustment plate of the utility model;

[0024] In the figure: 1, bottom plate; 2, mounting cover; 3, adjustment plate; 4, rotating wheel; 5, arc groove; 6, mounting frame; 7, fixing rod; 8, threaded rod; 9, handle; 10, support plate. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present invention are described in detail below. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments may be implemented and various changes may be made to the present invention without departing from the spirit and scope of the present invention. The more detailed description of the embodiments of the present invention below is not intended to limit the scope of the claimed present invention, but is merely for illustration and does not limit the description of the features and characteristics of the present invention, in order to propose the best way to perform the present invention, and is sufficient to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0026] Example 1

[0027] A mining machine power line protection device is used to protect moving cables during the movement of the mining machine to ensure the normal operation of the mining machine. The specific structure and working principle of the device are described in detail below.

[0028] like Figure 1 and Figure 2 As shown, the device includes a base plate 1, and a mounting cover 2 with an inverted concave structure is fixedly arranged directly above the base plate 1. An adjusting plate 3 and an adjusting member for driving the adjusting plate 3 to move are slidably installed inside the mounting cover 2 along its width direction. A row of rotating wheels 4 with a vertical axis are rotatably connected to one side of the inner wall of the mounting cover 2 and one side of the adjusting plate 3, that is, two opposite wall surfaces, and a cable is clamped between the two rows of rotating wheels 4.

[0029] Specifically, Figure 3 As shown, one side of the inner wall of the mounting cover 2 and one side of the adjustment plate 3 are fixedly connected with a plurality of mounting parts distributed at equal intervals, each mounting part includes two support plates 10 arranged up and down, and a rotating shaft with a vertical axis is rotatably connected between the two support plates 10 through a bearing, and each rotating wheel 4 is respectively sleeved on the corresponding rotating shaft, so that the rotating wheel 4 can form a rotatable connection between the inner wall of the mounting cover 2 and one side of the adjustment plate 3.

[0030] When the mining machine is working, the cable is located between the rotating wheels 4. Since the cable is clamped by two rows of rotating wheels 4, the cable is fixed in the installation cover 2. The installation cover 2 can protect the cable and the rotating wheels 4 to prevent the cable surface and the arc groove 5 from entering the ore block. When the cable is pulled, the rotating wheel 4 can rotate with the pulling of the cable, reducing the friction resistance of the cable and the friction damage on the surface of the cable when it is pulled, thereby effectively improving the service life of the cable in the mine.

[0031] In this embodiment, an arc groove 5 is formed on the circumferential surface of each rotating wheel 4 . The shape of the arc groove 5 matches the shape of the cable, so that the cable can be clamped better, and the wall cable falls off directly from between the two rows of rotating wheels 4 .

[0032] Specifically, the connection between the mounting cover 2 and the bottom plate 1 is as follows: a plurality of mounting brackets 6 in an inverted L-shaped structure are fixedly connected to one side of the top of the bottom plate 1, and one side of the mounting cover 2 is fixed to the plurality of mounting brackets 6, so that the mounting cover 2 can be fixedly connected directly above the bottom plate 1. Since the upper end surface and the two side walls of the mounting bracket 6 are fixedly connected to the mounting cover 2, the installation strength of the mounting cover 2 can be effectively improved. At the same time, the design of the mounting bracket 6 enables the mounting cover 2 to be provided with a gap between its lower end surface and the bottom plate 1 for the cable to pass through, and the size of the gap is about 50 mm, and the sufficient spacing can facilitate the removal of the cable from the mounting cover 2.

[0033] In driving the adjustment plate 3, in order to enable the adjustment plate 3 to move forward and backward, the adjustment member includes a threaded rod 8 which is rotatably connected to one side of the adjustment plate 3 through a bearing and is horizontally axial. The threaded rod 8 is inserted into one side of the mounting cover 2 through threaded cooperation, and the threaded rod 8 is fixedly connected to a handle 9 located outside the mounting cover 2 on the side away from the adjustment plate 3. The threaded rod 8 can be rotated on one side of the mounting cover 2 by holding the handle 9 by hand and turning it. At this time, the threaded rod 8 will move forward and backward with the cooperation of the thread, and drive the adjustment plate 3 to adjust its front and rear position in the mounting cover 2, so that the spacing between the two rows of rotating wheels 4 can be increased or decreased, thereby achieving the effect of clamping or releasing the cable.

[0034] At the same time, two symmetrical cylindrical holes in the front-to-back axial direction are opened on one side of the mounting cover 2, and two fixing rods 7 that slide through the corresponding cylindrical holes are fixedly connected on one side of the adjustment plate 3, so that the adjustment plate 3 can form a front-to-back sliding connection in the mounting cover 2.

[0035] In summary, the mining machine power line protection device of this embodiment can effectively reduce the friction resistance of the mining machine cable during displacement, reduce wear and tear, and increase the service life of the cable.

Claims

1. A mining machine power line protection device, characterized in that: The invention comprises a bottom plate (1), a mounting cover (2) is fixedly arranged above the bottom plate (1), an adjusting plate (3) and an adjusting member for driving the adjusting plate (3) to move are slidably mounted inside the mounting cover (2) along its width direction, and a row of rotating wheels (4) with a vertical axis are rotatably connected to two opposite wall surfaces of the mounting cover (2) and the adjusting plate (3).

2. A mining machine power line protection device according to claim 1, characterized in that: An arc-shaped groove (5) is provided on the circumferential surface of the rotating wheel (4).

3. A mining machine power line protection device according to claim 1, characterized in that: The installation cover (2) is in an inverted concave-shaped structure, and a gap is provided between the bottom of the installation cover (2) and the bottom plate (1) for the cable to pass through.

4. A mining machine power line protection device according to claim 3, characterized in that: One side of the base plate (1) is fixedly connected to a plurality of mounting frames (6), and one side of the mounting cover (2) is fixedly connected to the plurality of mounting frames (6).

5. A mining machine power line protection device according to claim 4, characterized in that: The mounting frame (6) is in an inverted L-shaped structure.

6. A mining machine power line protection device according to claim 1, characterized in that: Two cylindrical holes are provided on the side of the mounting cover (2), and a fixing rod (7) which is slidably inserted into the cylindrical holes is fixedly connected to the side of the adjustment plate (3).

7. A mining machine power line protection device according to claim 6, characterized in that: The adjusting member comprises a threaded rod (8) rotatably connected to the side of the adjusting plate (3) through a bearing, and the threaded rod (8) is inserted into one side of the mounting cover (2) through threaded engagement.

8. A mining machine power line protection device according to claim 7, characterized in that: A handle (9) located outside the mounting cover (2) is fixedly connected to the side of the threaded rod (8) away from the adjustment plate (3).

9. A mining machine power line protection device according to any one of claims 1 to 8, characterized in that: A plurality of spaced-apart mounting parts are fixedly connected to two opposite wall surfaces of the mounting cover (2) and the adjusting plate (3), each mounting part comprising two support plates (10) arranged vertically, a rotating shaft with a vertical axis being rotatably connected between the two support plates (10) via a bearing, and a rotating wheel (4) is sleeved on the rotating shaft.

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