Temporary support system for underground coal mine excavation

Abstract

The utility model discloses a temporary support system for underground coal mine excavation, which relates to the technical field of underground coal mine excavation and comprises a support mechanism, a monitoring unit, a controller and an alarm unit, the monitoring unit, the controller and the alarm unit are arranged on the support mechanism, and an output end of the monitoring unit is connected with a receiving end of the controller. The output end of the controller and the receiving end of the alarm unit are connected in actual operation of the device, the center protection cylinder can be placed in an excavated hole, the arc-shaped supporting plates on the outer side of the center protection cylinder automatically stretch out through the elastic effect of the spring telescopic rods, the outer sides of the arc-shaped supporting plates can be firmly attached to the wall of the hole, and the safety of the device is improved. According to the radiuses of different dug holes, the adaptive range can be adaptively changed and expanded, the center protection cylinder is supported, a drill bit can conveniently stretch into the center protection cylinder, the dug holes can be conveniently protected, and collapse is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underground coal mine excavation, in particular to a temporary support system for underground coal mine excavation. Background Art

[0002] Support is a general term for components or other measures taken to support, strengthen or cover the surrounding rock to ensure stability and construction safety after underground chamber excavation. When using traditional mining methods, there are three types of support: retaining pillars, erecting supports, and reinforcing rocks.

[0003] When the drill bit is mining underground coal, the hole created by the mining will collapse and debris from the inner wall will fall due to the vibration of the machine, which can easily affect the safety of excavation and the service life of the drill bit.

[0004] Therefore, it is necessary to propose a temporary support system for underground coal mine excavation to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a temporary support system for underground coal mine excavation, so as to solve the problem that when the drill bit mines underground coal, the hole produced by the mining will collapse and the inner wall debris will fall due to the vibration of the machine, which may easily affect the safety of excavation and the service life of the drill bit.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a temporary support system for underground coal mine excavation, comprising a support mechanism and a monitoring unit, a controller, and an alarm unit provided on the support mechanism, wherein the output end of the monitoring unit is connected to the receiving end of the controller, and the output end of the controller is connected to the receiving end of the alarm unit;

[0007] The support mechanism includes a central protective tube, a plurality of spring telescopic rods are fixed to the outside of the central protective tube, and an arc-shaped support plate is fixed to one end of each of the plurality of spring telescopic rods. The monitoring unit includes a vibration sensor, which is fixed to the arc-shaped support plate. The alarm unit includes an alarm and a first lighting lamp, which is fixed to the top of the central protective tube.

[0008] Preferably, a connecting seat is fixed on the outside of the central protective tube, a pulley is rotatably connected inside the connecting seat, a fixed block is provided above the pulley, the fixed block is fixed to the outside of the central protective tube, a connecting rope is transmitted on the pulley, one end of the connecting rope is connected to the arc-shaped support plate, and the other end of the connecting rope passes through the top of the fixed block.

[0009] Preferably, the fixing block and the pulley are provided as a group, and the fixing block and the pulley are positioned opposite to the corresponding arc-shaped support plate.

[0010] Preferably, a second lighting lamp is embedded on the inner wall of the central protective tube.

[0011] Preferably, the alarm is fixed to the outside of the central protective tube.

[0012] Preferably, a plurality of arc-shaped support plates are provided, and the plurality of arc-shaped support plates are distributed at equal distances around the center of the central protective tube, and the plurality of arc-shaped support plates are combined into a cylindrical shape.

[0013] Preferably, two auxiliary handles are fixed to the top of the central protective tube.

[0014] Technical effects and advantages of this utility model:

[0015] 1. In the actual operation of the present invention, the central protective tube can be placed in the excavated hole. The arc-shaped support plate on the outside of the central protective tube is automatically extended by the elastic action of the spring telescopic rod, so that the outer side of the arc-shaped support plate can be firmly attached to the hole wall. According to the radius of different excavated holes, it can be adaptively changed to expand the adaptability range, support the central protective tube, facilitate the drill bit to extend from the inside of the central protective tube, and facilitate the protection of the excavated hole to avoid collapse.

[0016] 2. At the same time, since the arc-shaped support plate is attached to the hole wall, when the nearby soil vibrates or collapses, the vibration will be transmitted to the vibration sensor, and the vibration sensor will transmit the signal to the controller. The controller will control the first lighting to flash and the alarm to alert personnel, making it convenient to recover the drill bit and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the central protective tube from one perspective of the present utility model.

[0018] Figure 2 This is a structural schematic diagram of the central protective tube of the utility model from another perspective.

[0019] In the figure: 1. Central protective tube; 2. Spring telescopic rod; 3. Arc support plate; 4. Vibration sensor; 5. First lighting lamp; 6. Auxiliary handle; 7. Second lighting lamp; 8. Alarm; 9. Fixing block; 10. Pulley; 11. Connecting rope. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clarify the technical solutions in the embodiments of the present invention; it is clear that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figures 1 and 2 The temporary support system for underground coal mine excavation shown includes a support mechanism and a monitoring unit, a controller, and an alarm unit provided on the support mechanism. The output end of the monitoring unit is connected to the receiving end of the controller, and the output end of the controller is connected to the receiving end of the alarm unit.

[0022] Specifically, the support mechanism includes a central protective tube 1, and multiple spring telescopic rods 2 are fixed to the outside of the central protective tube 1. One end of the multiple spring telescopic rods 2 is correspondingly fixed with an arc-shaped support plate 3. The monitoring unit includes a vibration sensor 4, and the vibration sensor 4 is fixed on the arc-shaped support plate 3. The alarm unit includes an alarm 8 and a first lighting lamp 5, and the first lighting lamp 5 is fixed to the top of the central protective tube 1. There are multiple arc-shaped support plates 3, and the multiple arc-shaped support plates 3 are distributed at equal distances around the center of the central protective tube 1, and the multiple arc-shaped support plates 3 are combined into a cylindrical shape.

[0023] In the actual operation of the present invention, the central protective tube 1 can be placed in the excavated hole, and the arc-shaped support plate 3 on the outside of the central protective tube 1 is automatically extended by the elastic action of the spring telescopic rod 2, so that the outside of the arc-shaped support plate 3 can be firmly attached to the hole wall. According to the radius of different holes, it can be adaptively changed to expand the adaptability range, support the central protective tube 1, and facilitate the drill bit to extend from the inside of the central protective tube 1, so as to protect the excavated hole and avoid collapse.

[0024] At the same time, since the arc-shaped support plate 3 is attached to the hole wall, when the nearby soil vibrates or collapses, the vibration will be transmitted to the vibration sensor 4, and the vibration sensor 4 will transmit the signal to the controller. The controller controls the first lighting lamp 5 to flash and the alarm 8 to sound an alarm to remind personnel, facilitate the recovery of the drill bit, and improve the safety of use.

[0025] A connecting seat is fixed to the outside of the central protective tube 1, and a pulley 10 is rotatably connected inside the connecting seat. A fixed block 9 is provided above the pulley 10, and the fixed block 9 is fixed to the outside of the central protective tube 1. A connecting rope 11 is transmitted on the pulley 10, and one end of the connecting rope 11 is connected to the arc-shaped support plate 3, and the other end of the connecting rope 11 passes through the top of the fixed block 9.

[0026] The fixed block 9 and the pulley 10 are arranged as a group, and the fixed block 9 and the pulley 10 are positioned opposite to the corresponding arc-shaped support plate 3 .

[0027] In the actual operation of the present invention, when the connecting rope 11 is pulled, the arc-shaped support plate 3 can be driven close to the central protective tube 1 by the connecting rope 11, thereby compressing the spring telescopic rod 2, so that the arc-shaped support plate 3 no longer fits the inner wall of the hole, making it easier for the central protective tube 1 to be released.

[0028] Furthermore, the lifting connection rope 11 can drive the released central protective tube 1 to be extracted from the hole.

[0029] A second lighting lamp 7 is embedded on the inner wall of the central protective tube 1 to illuminate the interior of the central protective tube 1 and facilitate inspection by personnel.

[0030] The alarm 8 is fixed to the outside of the central protective tube 1 , and two auxiliary handles 6 are fixed to the top of the central protective tube 1 to facilitate personnel to take the central protective tube 1 .

Claims

1. A temporary support system for underground coal mine excavation, comprising a support mechanism and a monitoring unit, a controller, and an alarm unit provided on the support mechanism, characterized in that: The output end of the monitoring unit is connected to the receiving end of the controller, and the output end of the controller is connected to the receiving end of the alarm unit; The support mechanism comprises a central protective tube (1), a plurality of spring telescopic rods (2) are fixed to the outside of the central protective tube (1), and an arc-shaped support plate (3) is fixed to one end of each of the plurality of spring telescopic rods (2); the monitoring unit comprises a vibration sensor (4), and the vibration sensor (4) is fixed on the arc-shaped support plate (3); the alarm unit comprises an alarm (8) and a first lighting lamp (5), and the first lighting lamp (5) is fixed to the top end of the central protective tube (1).

2. The temporary support system for underground coal mine excavation according to claim 1, characterized in that: A connecting seat is fixed on the outside of the central protective tube (1), a pulley (10) is rotatably connected in the connecting seat, a fixing block (9) is provided above the pulley (10), the fixing block (9) is fixed to the outside of the central protective tube (1), a connecting rope (11) is transmitted on the pulley (10), one end of the connecting rope (11) is connected to the arc-shaped support plate (3), and the other end of the connecting rope (11) passes through the top of the fixing block (9).

3. The temporary support system for underground coal mine excavation according to claim 2, characterized in that: The fixed block (9) and the pulley (10) are arranged as a group, and the fixed block (9) and the pulley (10) are positioned relative to the corresponding arc-shaped support plate (3).

4. The temporary support system for underground coal mine excavation according to claim 1, characterized in that: A second lighting lamp (7) is embedded on the inner wall of the central protective tube (1).

5. The temporary support system for underground coal mine excavation according to claim 1, characterized in that: The alarm (8) is fixed on the outside of the central protection tube (1).

6. The temporary support system for underground coal mine excavation according to claim 1, characterized in that: A plurality of arc-shaped support plates (3) are provided, and the plurality of arc-shaped support plates (3) are distributed at equal distances around the center of the central protective cylinder (1), and the plurality of arc-shaped support plates (3) are combined into a cylindrical shape.

7. The temporary support system for underground coal mine excavation according to claim 1, characterized in that: Two auxiliary handles (6) are fixed to the top end of the central protective tube (1).

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