Underground coal mine sensor lifting device

Abstract

The utility model discloses a coal mine underground sensor lifting device which comprises a fixed pulley, a movable pulley and a rope, the fixed pulley is fixedly installed on a roadway top plate, the movable pulley is located below the fixed pulley, and one end of the rope is fixedly connected with a hook on the lower portion of the fixed pulley. The other end of the movable pulley downwards bypasses the movable pulley, upwards bypasses the fixed pulley and downwards extends to the supporting surface to be connected with the winch; and the sensor is detachably and fixedly mounted below the movable pulley. By operating the winch to rotate, the sensor ascends or descends, the problem that the large-section roadway sensor is difficult to hang, maintain and adjust is solved, the movable pulley and the fixed pulley are combined, the labor-saving effect is achieved, the burden of workers is relieved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine management equipment, and in particular relates to a sensor lifting device for an underground coal mine. Background Art

[0002] At present, sensors are important equipment for coal mine safety management, mainly used to monitor the gas concentration of gas and carbon monoxide in the mine. In order to meet the functions of safe pedestrians, transportation, ventilation, and material transportation, the cross-section of underground tunnels in coal mines is mostly above 12m², especially the cross-section of the development tunnels of newly built mines is up to 20m², and the height in the tunnel is as high as 4.1m. The sensor hanging standard is no more than 300mm from the roof (top beam) and no less than 200mm from the tunnel wall, and it is easy to maintain and does not affect pedestrians and vehicles.

[0003] Due to the large cross-section of the tunnel, the various sensors are hung at too high a position, making it inconvenient for personnel to hang, maintain and adjust the sensors. During the maintenance process, personnel must stand on belts or climb on the tunnel wall to perform simple maintenance on the sensors. For example, when adjusting the sensors, they have to find ladders from other locations and carry them to the site. Personnel can only perform adjustment experiments on the sensors by standing on the ladder, which poses a great safety risk. Utility Model Content

[0004] The utility model aims to provide a sensor lifting device for underground coal mines, which is convenient for workers to hang and maintain sensors.

[0005] The technical solution adopted by the utility model is a sensor lifting device for an underground coal mine, comprising a fixed pulley, a movable pulley and a wire rope, wherein the fixed pulley is fixedly mounted on the top plate of the tunnel, and the movable pulley is located below the fixed pulley, one end of the wire rope is fixedly connected to a hook at the bottom of the fixed pulley, and the other end of the wire rope passes around the movable pulley downward and passes around the fixed pulley upward, and then extends downward to a supporting surface and is connected to a winch, and the sensor is detachably fixedly mounted below the movable pulley.

[0006] Preferably, a tray is connected to the bottom of the movable pulley through a bracket, a cavity is provided in the tray, and a strip hole is provided on the bottom plate of the tray. A connecting rod is provided at the top of the sensor, and a connecting block is provided at the top of the connecting rod corresponding to the strip hole. The size of the connecting block is smaller than the size of the strip hole. The connecting block extends into the tray through the strip hole and is rotated and located on the bottom plate of the tray.

[0007] Preferably, a groove is further provided on the bottom plate of the tray, the center of the groove coincides with the center of the strip hole, and the connecting block falls into the groove after rotation.

[0008] Preferably, a protective cover is provided at the top of the sensor, and the cross section of the protective cover is conical.

[0009] Compared with the prior art, the beneficial effect of the utility model is that the sensor is raised or lowered by using a combination of a fixed pulley and a movable pulley for hanging, which not only solves the problem of difficult hanging, maintenance and adjustment of sensors in large-section tunnels, but also the use of the pulley group has a labor-saving effect, greatly improving work efficiency.

[0010] In addition, the sensor can be directly hung on the tray under the movable pulley through the connecting rod, which is convenient and quick, and a groove is set on the tray floor to improve the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the sensor lifting device;

[0012] Figure 2 This is a bottom view of the tray;

[0013] Figure 3 This is the front view of the sensor. DETAILED DESCRIPTION

[0014] The present invention will be further explained below in conjunction with the accompanying drawings to facilitate better understanding by those skilled in the art.

[0015] Example 1

[0016] like Figure 1-3 As shown, a sensor lifting device for underground coal mines includes a fixed pulley 1, a movable pulley 2 and a wire rope 3. The fixed pulley 1 is fixedly mounted on the tunnel roof 4, and the movable pulley 2 is located below the fixed pulley 1. After one end of the wire rope 3 is fixedly connected to the hook at the bottom of the fixed pulley 1, the other end of the wire rope 3 passes around the movable pulley 2 downward and the fixed pulley 1 upward, and then extends downward to the support surface and is connected to the winch 5. The sensor 6 is detachably fixedly mounted below the movable pulley 2. By operating the winch 5 to rotate, the sensor 6 is raised or lowered, which not only solves the problem of difficulty in hanging, maintaining and adjusting the large-section tunnel sensor 6, but also adopts the combination of the movable pulley 2 and the fixed pulley 1, which plays a labor-saving role, reduces the burden on the staff, and greatly improves the work efficiency.

[0017] Furthermore, a tray 22 is connected to the bottom of the movable pulley 2 through a bracket 21, a cavity is provided in the tray 22, and a bar hole 23 is provided on the bottom plate of the tray 22. A connecting rod 61 is provided at the top of the sensor 6, and a connecting block 62 is provided at the top of the connecting rod 61 corresponding to the bar hole 23. The size of the connecting block 62 is smaller than the size of the bar hole 23. The connecting block 62 extends into the tray 22 through the bar hole 23 and is rotated and located on the bottom plate of the tray 22.

[0018] The bottom plate of the tray 22 is also provided with a groove 24, which is perpendicular to the strip hole 23 and the center of the groove 24 coincides with the center of the strip hole 23. The connecting block 62 rotates and falls into the groove 24. The sensor 6 can be directly hung on the tray 22 through the connecting rod 61, which is convenient and quick. The groove 24 has a limiting and fixing effect on the connecting block 62, preventing the connecting block 62 from slipping off, and improving the connection stability.

[0019] In order to prevent debris from falling from the tunnel roof 4 and damaging the sensor 6 , a protective cover 7 is provided on the top of the sensor 6 . The cross section of the protective cover 7 is conical, which is conducive to the debris sliding down and avoiding accumulation on the protective cover 7 .

[0020] The above-mentioned embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit and principle of the utility model, various modifications and improvements made by those skilled in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A sensor lifting device for underground coal mines, characterized in that: The invention comprises a fixed pulley (1), a movable pulley (2) and a wire rope (3), wherein the fixed pulley (1) is fixedly mounted on a tunnel roof (4), the movable pulley (2) is located below the fixed pulley (1), one end of the wire rope (3) is fixedly connected to a hook at the bottom of the fixed pulley (1), and the other end of the wire rope (3) passes downwardly around the movable pulley (2) and upwardly around the fixed pulley (1), and then extends downwardly to a supporting surface and is connected to a winch (5), and a sensor (6) is detachably fixedly mounted below the movable pulley (2), and the movable pulley (2) is located below the fixed pulley (1). A tray (22) is connected via a bracket (21), a cavity is provided in the tray (22), and a strip hole (23) is provided on the bottom plate of the tray (22), a connecting rod (61) is provided at the top end of the sensor (6), a connecting block (62) is provided at the top end of the connecting rod (61) corresponding to the strip hole (23), the size of the connecting block (62) is smaller than the size of the strip hole (23), and the connecting block (62) extends into the tray (22) through the strip hole (23) and rotates to be located on the bottom plate of the tray (22).

2. A sensor lifting device for underground coal mines according to claim 1, characterized in that: The bottom plate of the tray (22) is also provided with a groove (24), the center of the groove (24) coincides with the center of the strip hole (23), and the connecting block (62) falls into the groove (24) after rotation.

3. The sensor lifting device for underground coal mine according to claim 1, characterized in that: A protective cover (7) is provided at the top of the sensor (6), and the cross section of the protective cover (7) is conical.

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