Inspection device for monitoring poisonous and harmful gas in underground coal mine

Abstract

The utility model belongs to the technical field of underground gas monitoring, and particularly relates to an inspection device for underground coal mine poisonous and harmful gas monitoring. Comprising an annular track and a driving mechanism with a driving path concentric with the annular track. A detector is assembled on the annular track in a sliding mode, a pull rope is connected between the driving end of the driving mechanism and the detector, and the driving mechanism pulls the detector to move along the annular track through the pull rope; the device further comprises a cable wheel, the unfolding end of a cable on the cable wheel is connected with the detector, the fixed end of the cable is connected with data acquisition equipment, a coil spring is arranged in the cable wheel, and the coil spring enables the cable wheel to keep the trend of winding the cable. The inspection device for monitoring the poisonous and harmful gas in the underground coal mine can help the underground coal mine roadway to realize real-time monitoring automation of the poisonous and harmful gas, and provides powerful guarantee for safety production of a mine.

Description

Technical Field

[0001] This utility model belongs to the field of underground gas monitoring technology, specifically relating to an inspection device for monitoring toxic and harmful gases in coal mines. Background Technology

[0002] Methane gas (CH4) is the most dangerous flammable and explosive gas in underground coal mines. Traditional manual inspections suffer from low efficiency and high personnel safety risks. Methane explosions account for over 30% of coal mine accidents in China (data source: National Mine Safety Administration). The National Coal Mine Safety Regulations explicitly require real-time monitoring of underground methane concentrations, prompting enterprises to seek more efficient automated monitoring methods. Manual inspections using portable instruments suffer from data recording delays and personnel exposure to hazardous environments (such as high methane concentrations and the risk of collapse). Utility Model Content

[0003] This invention aims to solve the problems of data recording delays and personnel exposure to hazardous environments during manual gas inspections underground.

[0004] This utility model provides the following technical solution: an inspection device for monitoring toxic and harmful gases in underground coal mines, including a circular track and a drive mechanism whose drive path is concentric with the circular track;

[0005] The detector is slidably mounted on the circular track. The drive end of the drive mechanism is connected to the detector by a pull rope. The drive mechanism pulls the detector along the circular track by the pull rope.

[0006] It also includes a cable reel, on which the extended end of the cable is connected to the detector and the fixed end of the cable is connected to the data acquisition equipment. A coil spring is installed inside the cable reel to keep the cable reel tending to wind up the cable.

[0007] Furthermore, the circular track and the drive mechanism are arranged in two layers, with the circular track on top and the drive mechanism on the bottom, and the circular track is larger than the drive path of the drive mechanism.

[0008] Furthermore, the track groove on the circular track has an opening facing downwards. The track groove opening is narrow and widens to both sides of the opening. A sliding plate is connected to the connecting rod at the top of the detector. The sliding plate is nested inside the track groove, and the connecting rod extends from the opening of the track groove to connect with the sliding plate.

[0009] Furthermore, the drive mechanism includes a driving pulley, a driven pulley, and a belt. The driving pulley and the driven pulley tension the belt. The belt is concentric with the circular track, and the drag node on the belt is connected to the pull rope.

[0010] Furthermore, the cable reel is mounted on the rotary seat.

[0011] Furthermore, the cable wheel is located in the middle area of ​​the circular track.

[0012] Furthermore, the active pulley is connected to the wind-driven motor.

[0013] Furthermore, the bottom of the skateboard is inlaid with ball bearings, and the skateboard makes rolling contact with the track groove through the ball bearings.

[0014] Furthermore, the circular track is fixed to the bottom of the air duct by the top hanger, and the driven pulley support and the wind motor are installed at the bottom of the air duct by the hanger; the cable wheel is installed at the bottom of the air duct by the top hanger.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This utility model provides an inspection device for monitoring toxic and harmful gases in underground coal mines, which can help realize the real-time automated monitoring of toxic and harmful gases in underground coal mine roadways, providing a strong guarantee for safe production in the mine. The device is installed using ventilation and water pipelines, which has a small space occupation, low cost, and is easy to install and disassemble. Within the inspection range, it reciprocates and circulates at a high frequency to monitor toxic and harmful gases in real time. Attached Figure Description

[0017] Figure 1 A top-view schematic diagram of an inspection device for monitoring toxic and harmful gases in underground coal mines;

[0018] Figure 2 A frontal view of an inspection device for monitoring toxic and harmful gases in underground coal mines;

[0019] Figure 3 This is a schematic diagram showing the connection between the detector and the circular track;

[0020] Figure 4 This is a schematic diagram of the installation of an inspection device for monitoring toxic and harmful gases in underground coal mines.

[0021] In the diagram: 1-Circular track; 1.1-Railway groove; 2-Detector; 3-Pull rope; 4-Cable pulley; 5-Connecting rod; 6-Slide plate; 6.1-Ball bearing; 7-Drive pulley; 8-Driven pulley; 9-Belt; 9.1-Drag node; 10-Pneumatic motor; 11-Rotating seat; 12-Hanging rod; 13-Air and water pipes; 14-Hanging bracket. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] like Figure 1, Figure 2 As shown: A patrol device for monitoring toxic and harmful gases in underground coal mines includes a circular track 1 and a drive mechanism whose drive path is concentric with the circular track 1.

[0024] The detector 2 is slidably mounted on the circular track 1. The drive end of the drive mechanism is connected to the detector 2 by a pull rope 3. The drive mechanism pulls the detector 2 along the circular track 1 through the pull rope 3. Within the inspection range, the detector 2 reciprocates in a high-frequency, real-time monitoring of toxic and harmful gases.

[0025] It also includes a cable reel 4, the extended end of the cable on the cable reel 4 is connected to the detector 2, and the fixed end of the cable is connected to the data acquisition device. A coil spring is installed inside the cable reel 4, which keeps the cable reel 4 tending to rewind the cable. When the detector 2 moves to a distance, the cable on the cable reel 4 unfolds. When the detector 2 moves to a close distance, the cable reel 4 rewinds the released cable.

[0026] The circular track 1 and the drive mechanism are arranged in layers, with the circular track 1 on top and the drive mechanism on the bottom. The circular track 1 is larger than the drive path of the drive mechanism.

[0027] like Figure 3 As shown: The opening of the track groove 1.1 on the circular track 1 faces downwards. The opening of the track groove 1.1 is narrow, and it widens towards both sides inside the opening. The connecting rod 5 at the top of the detector 2 is connected to the slide plate 6, which slides and nests inside the track groove 1.1. The connecting rod 5 extends from the opening of the track groove 1.1 and connects to the slide plate 6. The "narrow opening and wide cavity" structure of the track groove 1.1 prevents the slide plate from derailing and ensures long-term stable operation.

[0028] The bottom surface of the skateboard 6 is inlaid with balls 6.1. The skateboard 6 makes rolling contact with the track groove 1.1 through the balls 6.1, thereby reducing frictional resistance.

[0029] The drive mechanism includes a drive pulley 7, a driven pulley 8, and a belt 9. The drive pulley 7 is connected to a pneumatic motor 10. The use of the pneumatic motor 10 to drive the belt meets the requirements for explosion protection in underground wells. The drive pulley 7 and the driven pulley 8 tension the belt 9. The belt 9 is concentric with the annular track 1. The drag node 9.1 on the belt 9 is connected to the pull rope 3.

[0030] The cable wheel 4 is mounted on the rotary seat 11 and is located in the middle area of ​​the circular track 1. The cable wheel 4 can rotate on the rotary seat 11. As the detector 2 moves, the cable wheel 4 can change direction to avoid cable tangling and reduce cable wear.

[0031] like Figure 4As shown: the circular track 1 is fixed to the bottom of the air duct 13 by the top hanger 12. The support seat of the driven pulley 8 and the pneumatic motor 10 are installed at the bottom of the air duct 13 by the hanger 14; the cable wheel 4 is installed at the bottom of the air duct 13 by the top hanger 12. This device is installed using the air duct 13, which has a small space occupation, low cost, and is easy to install and disassemble.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A patrol device for monitoring toxic and harmful gases in underground coal mines, characterized in that: It includes a circular track (1) and a drive mechanism whose drive path is concentric with the circular track (1); The detector (2) is slidably mounted on the circular track (1). The drive end of the drive mechanism is connected to the detector (2) by a pull rope (3). The drive mechanism pulls the detector (2) along the circular track (1) through the pull rope (3). It also includes a cable reel (4), the unfolded end of the cable on the cable reel (4) is connected to the detector (2), the fixed end of the cable is connected to the data acquisition device, and a coil spring is provided inside the cable reel (4) to keep the cable reel (4) tending to wind up the cable.

2. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 1, characterized in that: The circular track (1) and the drive mechanism are arranged in layers, with the circular track (1) on top and the drive mechanism on the bottom. The circular track (1) is larger than the drive path of the drive mechanism.

3. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 2, characterized in that: The opening of the track groove (1.1) on the ring track (1) is downward. The opening of the track groove (1.1) is narrow and widens to both sides of the opening. The connecting rod (5) at the top of the detector (2) is connected to the slide plate (6). The slide plate (6) is slidably nested in the track groove (1.1). The connecting rod (5) extends from the opening of the track groove (1.1) and connects to the slide plate (6).

4. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 2, characterized in that: The drive mechanism includes a driving pulley (7), a driven pulley (8), and a belt (9). The driving pulley (7) and the driven pulley (8) tension the belt (9). The belt (9) is concentric with the circular track (1). The drag node (9.1) on the belt (9) is connected to the pull rope (3).

5. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 4, characterized in that: The cable reel (4) is mounted on the rotary seat (11).

6. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 5, characterized in that: The cable wheel (4) is located in the middle area of ​​the circular track (1).

7. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 4, characterized in that: The active pulley (7) is connected to the pneumatic motor (10).

8. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 3, characterized in that: The bottom surface of the slide plate (6) is inlaid with balls (6.1), and the slide plate (6) makes rolling contact with the track groove (1.1) through the balls (6.1).

9. The inspection device for monitoring toxic and harmful gases in coal mines according to claim 7, characterized in that: The circular track (1) is fixed to the bottom of the air-water pipe (13) by the top hanger (12). The support seat of the driven pulley (8) and the wind motor (10) are installed at the bottom of the air-water pipe (13) by the hanger (14). The cable wheel (4) is installed at the bottom of the air-water pipe (13) by the top hanger (12).

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