Coal mine gas extraction concentration monitoring and early warning device

Abstract

The utility model relates to the technical field of gas monitoring, and particularly discloses a coal mine gas extraction concentration monitoring and early warning device, which comprises a monitoring mechanism main body, one side of the inner bottom wall of each of a first mounting pipe, a shaping pipe and a second mounting pipe is fixedly connected with a positioning track, and the middle part of the inner wall of each positioning track is fixedly connected with a magnetic coil; through the arrangement of the first mounting pipe, the shaping pipe, the second mounting pipe, the positioning track and the magnetic coil, the shaping pipe can be synchronously bent along with the road bending condition in the coal mine, so that a monitoring pipeline is established in the coal mine with the bent road, and the gas concentration in the coal mine can be conveniently monitored by the monitoring mechanism through the gas inlet pipe; and the positioning track is made of aluminum alloy, so that when the shaping pipe is bent, the positioning track is synchronously bent, and the monitoring mechanism is driven by the magnetic coil to move in the first mounting pipe, the shaping pipe and the second mounting pipe, so that the effect that the monitoring device is used for laying the monitoring pipeline along the route in the coal mine is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the gas monitoring technical field, concretely relates to a coal mine gas extraction concentration monitoring and early warning device. BACKGROUND

[0002] Coal mine gas disaster is a major problem in coal mine safety production, since coal mining will expand to the deep underground, the mine pressure will also increase, leading to the gas emission of the coal mining face to increase, when the gas concentration reaches a certain degree, if encountering a fire source (such as the spark generated by cutting large coal gangue of the coal mining machine), it is easy to cause gas explosion and other disaster accidents, which seriously threatens the life safety of coal mine workers and causes huge economic losses, therefore, it is necessary to monitor the gas concentration inside the coal mine through the gas extraction concentration monitoring and early warning device.

[0003] In the Chinese patent with publication number CN114924036B, a gas concentration monitoring and early warning device for coal mine gas extraction is mentioned, which belongs to the gas technology field. A gas concentration monitoring and early warning device for coal mine gas extraction, comprising a gas concentration monitoring and early warning device main body, a gas conveying mechanism is arranged on one side of the gas concentration monitoring and early warning device main body, the gas conveying mechanism comprises: an air inlet pipe, a plurality of air inlets are formed in the lower part of the air inlet pipe, a filter screen is arranged in the air inlet; a plurality of supporting rods, the supporting rods are rotatably installed below the air inlet pipe; a gas pump, the gas pump is rotatably installed at one end of the air inlet pipe; a connecting pipe, one end of the connecting pipe is fixedly installed with the gas pump, and the other end is fixedly installed with the gas concentration monitoring and early warning device main body; a plugging mechanism, the plugging mechanism is rotatably installed in the air inlet pipe, and the plugging mechanism can keep only one air inlet open at the same time. The device can effectively monitor the gas concentration in the mine tunnel.

[0004] However, the above technical solution sets a plugging sleeve in the air inlet pipe, so that when the motor rotates, the position of the air inlet coinciding with the communication hole can be adjusted, and the air at different positions in the mine tunnel can be detected, thereby expanding the detection range of the device. Although this device can facilitate the detection of air at different positions, it is difficult to move the monitoring device stably at the turning position in the coal mine, which may cause the air detection inside the coal mine to be missed, and therefore the staff needs to improve it. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a coal mine gas extraction concentration monitoring and early warning device to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A coal mine gas extraction concentration monitoring and early warning device, comprising:

[0008] A monitoring mechanism main body;

[0009] The middle part of the bottom of the monitoring mechanism body is fixedly connected with a connecting pipe, the bottom end of the connecting pipe is fixedly connected with a first mounting pipe, one end of the first mounting pipe is fixedly connected with a plastic pipe, one end of the plastic pipe is fixedly connected with a second mounting pipe, and the surfaces of the first mounting pipe, the plastic pipe and the second mounting pipe are fixedly connected with air inlet pipes on one side.

[0010] The first mounting pipe, the plastic pipe and the second mounting pipe are fixedly connected with positioning tracks on one side of the inner bottom wall, the material of the positioning tracks is aluminum alloy, sliding grooves are formed in the middle parts of the two sides of the positioning tracks, and magnetic coils are fixedly connected to the inner wall of the positioning track, and the two sides of the magnetic coils are arranged on one side of the sliding groove.

[0011] Preferably, one side of the top of the positioning track is overlapped with a monitor, one side of the surface of the monitor is fixedly connected with a monitoring pipe, and the bottoms of the two sides of the monitor are fixedly connected with mounting plates.

[0012] Preferably, a plurality of sleeve frames are fixedly connected to one side of the surface of the mounting plate, a connecting column is slidably connected to the inner wall of the sleeve frame, a magnet column is fixedly connected to the front end of the connecting column, one side of the surface of the magnet column is slidably connected to the inner wall of the sliding groove, and two extrusion springs are connected to the tail end of the connecting column, and one side of the surface of the extrusion spring is inserted into the inner wall of the sleeve frame.

[0013] Preferably, mounting rings are sleeved on one side of the surfaces of the first mounting pipe, the plastic pipe and the second mounting pipe, a lap joint ring is rotatably connected to one side of the top of the mounting ring, a negative magnetic attraction plate is fixedly connected to the other side of the top of the mounting ring, a pull rod is fixedly connected to the middle part of the top of the lap joint ring, an assembly box is fixedly connected to one side of the top of the lap joint ring, an electric connector is fixedly connected to one side of the inner wall of the assembly box, an iron core is fixedly connected to the other side of the inner wall of the assembly box, and the iron core and the electric connector are electrically connected to each other, the bottom of the iron core is overlapped with the top of the negative magnetic attraction plate, and a control switch is mounted on one side of the top of the assembly box and electrically connected to the electric connector.

[0014] Preferably, an additional plate is fixedly connected to one side of the top of the mounting ring, fixed bolts are threadedly connected to the two sides of the surface of the additional plate, and a handle is fixedly connected to the front end of the fixed bolt.

[0015] Preferably, a sound alarm is fixedly connected to the middle part of the surface of the monitoring mechanism body, a light alarm is fixedly connected to the middle part of the top of the monitoring mechanism body, and the tops of the two sides of the monitoring mechanism body are fixedly connected with baffles.

[0016] Preferably, one side of the bottom of one of the baffles is fixedly connected with a control panel, and one side of the bottom of the other baffle is fixedly connected with a control box.

[0017] Preferably, the bottom of the inner wall of the control box is fixedly connected with a controller, the middle of the inner wall of the control box is fixedly connected with a storage battery, the top of the inner wall of the control box is fixedly connected with a transmitter, and the transmitter, the storage battery and the controller are electrically connected with each other.

[0018] Preferably, the top of the two sides of the baffle is fixedly connected with an arc-shaped frame, one side of the top of the arc-shaped frame is fixedly connected with a connecting plate, and the middle of the top of the connecting plate is fixedly connected with a supporting rod.

[0019] Preferably, the top end of the supporting rod is fixedly connected with a right-angle mounting frame, and one side of the surface of the right-angle mounting frame is threadedly connected with a mounting bolt.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] (1) Through the setting of the first installation pipe, the plastic pipe, the second installation pipe, the air inlet pipe, the positioning track, the sliding groove and the magnetic coil, the plastic pipe can be bent synchronously according to the bending condition of the internal road of the coal mine, thus the monitoring pipeline is established in the coal mine with the curved road, the gas concentration in the coal mine is monitored by the monitoring mechanism through the air inlet pipe, the positioning track is made of aluminum alloy, so that the positioning track is bent synchronously when the plastic pipe is bent, and the monitoring mechanism is driven to move in the first installation pipe, the plastic pipe and the second installation pipe through the magnetic coil, so that the monitoring device is arranged along the route in the coal mine to monitor the pipeline, and the staff can operate conveniently.

[0022] (2) Through the setting of the positioning track, the monitor, the monitoring pipe, the sleeve frame, the connecting column, the magnet column and the extrusion spring, the gas concentration of the air in the coal mine is monitored by the monitoring pipe on the surface of the monitor, the external gas concentration is monitored by the air inlet pipe on the surface of the first installation pipe, the plastic pipe and the second installation pipe, the magnet column is slidably connected in the sliding groove of the positioning track, the magnetic coil of the positioning track is connected to the power supply, the magnet column is driven to move through the magnetic coil, so that the monitor moves in the first installation pipe, the plastic pipe and the second installation pipe, and when the monitor moves in the plastic pipe, the extrusion spring is changed by different bending degrees, so that the magnet column is always in the inside of the sliding groove, thus the monitor can move stably in the first installation pipe, the plastic pipe and the second installation pipe, so that the gas concentration in different positions is monitored, and the staff can operate conveniently.

[0023] (3) through the installation ring, lap joint ring, negative magnetic plate, iron core and the setting of fixing bolt, in use, through the installation ring and lap joint ring will be connected with the pipeline, through the power supply will be connected with the bottom of the iron core, iron core power supply forming positive magnetic plate, so that the iron core formed by the positive magnetic plate and negative magnetic plate stable connection, thus the installation ring and lap joint ring stable lap, and after the iron core power off, facilitate the installation ring and lap joint ring disassembly, the staff will turn the handle, the fixed bolt is stably inserted into the wall, thus facilitating the stable installation of the pipeline, so as to achieve the effect of convenient and stable installation of the first installation pipe, plastic pipe and second installation pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the utility model;

[0025] Figure 2 is a perspective view of the positioning track of the utility model;

[0026] Figure 3 is a perspective view of the magnetic coil of the utility model;

[0027] Figure 4 is a perspective view of the magnet column of the utility model;

[0028] Figure 5 is a perspective view of the control box of the utility model;

[0029] Figure 6 is a perspective view of the installation ring of the utility model;

[0030] In the figure: 1, monitoring mechanism main body; 2, connecting pipe; 3, first installation pipe; 4, plastic pipe; 5, second installation pipe; 6, air inlet pipe; 7, positioning track; 8, sliding groove; 9, magnetic coil; 10, monitor; 11, monitoring pipe; 12, mounting plate; 13, sleeve frame; 14, connecting column; 15, magnet column; 16, extrusion spring; 17, installation ring; 18, lap joint ring; 19, negative magnetic plate; 20, pull rod; 21, assembly box; 22, power supply; 23, iron core; 24, control switch; 25, additional plate; 26, fixing bolt; 27, handle; 28, sound alarm; 29, light alarm; 30, baffle; 31, control panel; 32, control box; 33, controller; 34, battery; 35, transmitter; 36, arc-shaped frame; 37, link plate; 38, support rod; 39, right-angle mounting bracket; 40, mounting bolt. DETAILED DESCRIPTION

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1:

[0033] Please see Figures 1 to 6 As shown, a coal mine gas extraction concentration monitoring and early warning device includes:

[0034] Monitoring agency main body 1;

[0035] A connecting pipe 2 is fixedly connected to the middle of the bottom of the main body 1 of the monitoring mechanism. A first installation pipe 3 is fixedly connected to the bottom end of the connecting pipe 2. A plastic tube 4 is fixedly connected to one end of the first installation pipe 3. A second installation pipe 5 is fixedly connected to one end of the plastic tube 4. An air inlet pipe 6 is fixedly connected to one side of the surface of the first installation pipe 3, the plastic tube 4, and the second installation pipe 5.

[0036] Positioning rails 7 are fixedly connected to one side of the inner bottom wall of the first mounting tube 3, the shaping tube 4, and the second mounting tube 5. The positioning rails 7 are made of aluminum alloy. Sliding grooves 8 are opened in the middle of both sides of the positioning rails 7. Magnetic coils 9 are fixedly connected to the middle of the inner wall of the positioning rails 7, and the two sides of the magnetic coils 9 are set on one side of the sliding grooves 8.

[0037] In use, a first installation pipe 3 is installed at the bottom of the main body 1 of the monitoring mechanism via a connecting pipe 2. A plastic tube 4 is installed at one end of the first installation pipe 3. The plastic tube 4 can be bent synchronously with the curvature of the road inside the coal mine. A second installation pipe 5 is installed at one end of the plastic tube 4, thereby establishing a monitoring pipeline inside the winding road of the coal mine. Multiple air inlet pipes 6 are installed on the surface of the first installation pipe 3, the plastic tube 4, and the second installation pipe 5. The air inlet pipes 6 facilitate the monitoring mechanism to monitor the gas concentration in the coal mine. A positioning rail 7 is installed on the inner wall of the first installation pipe 3, the plastic tube 4, and the second installation pipe 5. The positioning rail 7 is made of aluminum alloy, so that the positioning rail 7 is bent synchronously when the plastic tube 4 is bent. Sliding grooves 8 are installed on both sides of the positioning rail 7, and a magnetic coil 9 is installed in the middle of the inner wall of the positioning rail 7. The monitoring mechanism is driven to move in the first installation pipe 3, the plastic tube 4, and the second installation pipe 5 through the magnetic coil 9.

[0038] Example 2:

[0039] Please see Figures 1 to 6As shown, the top of the positioning track 7 is overlapped with a monitor 10, one side of the surface of the monitor 10 is fixedly connected with a monitoring pipe 11, both sides of the bottom of the monitor 10 are fixedly connected with mounting plates 12, one side of the surface of the mounting plate 12 is fixedly connected with a plurality of sleeve frames 13, the inner wall of the sleeve frame 13 is slidably connected with a connecting column 14, the front end of the connecting column 14 is fixedly connected with a magnet column 15, one side of the surface of the magnet column 15 is slidably connected with the inner wall of the sliding groove 8, the tail end of the connecting column 14 is connected with two extrusion springs 16, and one side of the surface of the extrusion spring 16 is inserted into the inner wall of the sleeve frame 13.

[0040] In use, the top of the positioning track 7 is overlapped with a monitor 10, the surface of the monitor 10 is monitored by the monitoring pipe 11 to monitor the gas concentration of the air in the coal mine, and the surface of the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 is monitored by the air inlet pipe 6 to monitor the external gas concentration, and the bottom of the monitor 10 is provided with the mounting plate 12 on both sides, one side of the mounting plate 12 is provided with the connecting column 14 through the sleeve frame 13, the front end of the connecting column 14 is provided with the magnet column 15, the magnet column 15 is slidably connected in the sliding groove 8 of the positioning track 7, the magnetic coil 9 of the positioning track 7 is connected to the power supply, the magnet column 15 is moved by the magnetic coil 9, so that the monitor 10 moves in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5, and when the monitor 10 moves into the shaping pipe 4, the extrusion spring 16 is arranged at the junction of the sleeve frame 13 and the connecting column 14, the extrusion spring 16 is changed by different bending to compress, so that the magnet column 15 is always inside the sliding groove 8, thereby facilitating the stable movement of the monitor 10 in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5.

[0041] Example three:

[0042] Please refer to Figures 1 to 6 As shown, one side of the surface of the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 is sleeved with a mounting ring 17, one side of the top of the mounting ring 17 is rotatably connected with an overlapping ring 18, the other side of the top of the mounting ring 17 is fixedly connected with a negative magnetic attraction plate 19, the top of the overlapping ring 18 is fixedly connected with a pull rod 20, one side of the top of the overlapping ring 18 is fixedly connected with an assembly box 21, one side of the inner wall of the assembly box 21 is fixedly connected with an electric connector 22, the other side of the inner wall of the assembly box 21 is fixedly connected with an iron core 23, and the iron core 23 and the electric connector 22 are electrically connected with each other, the bottom of the iron core 23 is overlapped with the top of the negative magnetic attraction plate 19, one side of the top of the assembly box 21 is provided with a control switch 24, and the control switch 24 and the electric connector 22 are electrically connected with each other, one side of the top of the mounting ring 17 is fixedly connected with an additional plate 25, both sides of the surface of the additional plate 25 are threadedly connected with fixed bolts 26, and the front end of the fixed bolt 26 is fixedly connected with a handle 27.

[0043] When in use, the surfaces of the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 are overlapped with a plurality of mounting rings 17, the top of the mounting ring 17 is provided with an overlapping ring 18 through a rotating shaft, the pipe is sleeved through the mounting ring 17 and the overlapping ring 18, the top of the overlapping ring 18 is provided with an electricity connector 22 through an assembling box 21, the bottom iron core 23 is connected to the power supply through the electricity connector 22, the iron core 23 forms a positive magnetic plate after being electrified, a negative magnetic plate 19 is arranged on the top of the mounting ring 17, the positive magnetic plate formed by the iron core 23 is stably connected with the negative magnetic plate 19, so that the mounting ring 17 and the overlapping ring 18 are stably overlapped, and the mounting ring 17 and the overlapping ring 18 are convenient to disassemble after the iron core 23 is de-energized, a mounting plate 25 is arranged on the top of the mounting ring 17, the top of the mounting plate 25 is screw-connected with a fixing bolt 26 on both sides, a handle 27 is arranged on one end of the fixing bolt 26, the staff member rotates the handle 27 to stably insert the fixing bolt 26 into the wall, so that the pipe is conveniently and stably mounted.

[0044] Embodiment four:

[0045] Please refer to Figures 1 to 6 As shown in the figure, the middle of the surface of the monitoring mechanism body 1 is fixedly connected with a sound alarm 28, the middle of the top of the monitoring mechanism body 1 is fixedly connected with a light alarm 29, the top of both sides of the monitoring mechanism body 1 is fixedly connected with a baffle 30, one side of the bottom of one of the baffles 30 is fixedly connected with a control panel 31, one side of the bottom of the other baffle 30 is fixedly connected with a control box 32, the inner wall of the control box 32 is fixedly connected with a controller 33 at the bottom, the inner wall of the control box 32 is fixedly connected with a storage battery 34 at the middle, the inner wall of the control box 32 is fixedly connected with a transmitter 35 at the top, and the transmitter 35, the storage battery 34 and the controller 33 are electrically connected with each other, both sides of the top of the two baffles 30 are fixedly connected with an arc-shaped frame 36, one side of the top of the arc-shaped frame 36 is fixedly connected with a connecting plate 37, the top of the connecting plate 37 is fixedly connected with a supporting rod 38 at the middle, the top of the supporting rod 38 is fixedly connected with a right-angle mounting frame 39, one side of the surface of the right-angle mounting frame 39 is screw-connected with a mounting bolt 40.

[0046] In use, the monitoring mechanism body 1 is the core part of the entire monitoring system, responsible for monitoring specific environments or conditions, for controlling the gas concentration in the coal mine, when the monitoring mechanism body 1 detects abnormal conditions, the sound alarm 28 will issue a sound warning, the light alarm 29 will also start when detecting abnormalities, warning people through flashing lights, especially in noisy environments or for people with hearing impairment, light warning is particularly important, the baffle 30 is used to protect the control panel 31 and the control box 32 from being collided, the control panel 31 allows users to interact with the monitoring system, users can set monitoring parameters, view status information or manually trigger alarms through the control panel 31, the control box 32 is the electronic control center of the monitoring system, the controller 33 is the key component in the control box 32, responsible for logical judgment and decision-making, according to the preset rules and algorithms, analyzing data from the monitoring mechanism body 1, and deciding whether to trigger the alarm, the battery 34 provides power for the entire monitoring system, in the case of main power failure or power failure, the battery 34 can ensure the monitoring system to continue to work, the transmitter 35 is used to send monitoring data from the monitoring mechanism body 1 to a remote location or central control room, allowing remote monitoring and data analysis, improving the flexibility and response speed of the system.

[0047] Embodiment five:

[0048] Please refer to Figures 1 to 6 The device is applied in coal mines to monitor gas concentration in real time, ensuring safe production of coal mines, and timely issuing early warnings when gas concentration exceeds the standard at some place in the coal mine, avoiding disasters such as gas explosions, the device has compact structure and convenient operation, and workers can easily install and maintain it.

[0049] The shaping pipe 4 can be bent synchronously with the bending of the internal road of the coal mine, thereby establishing a monitoring pipeline in the coal mine with a curved road, the material of the positioning track 7 is aluminum alloy, so that the positioning track 7 is bent synchronously when the shaping pipe 4 is bent, the external gas concentration is monitored on the surfaces of the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 through the air inlet pipe 6, the magnet column 15 is slidingly connected in the sliding groove 8 of the positioning track 7, the magnetic coil 9 of the positioning track 7 is connected to the power supply, the magnet column 15 is moved by the magnetic coil 9, so that the monitor 10 moves in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5, and when the monitor 10 moves into the shaping pipe 4, the compression spring 16 is changed by different bending, so that the magnet column 15 is always inside the sliding groove 8, thereby facilitating the stable movement of the monitor 10 in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5.

[0050] Working principle: in use, the shaping pipe 4 can be bent along with the bending of the internal road of the coal mine, thereby establishing a monitoring pipeline in the curved coal mine, the gas concentration in the coal mine is monitored by the monitoring mechanism through the air inlet pipe 6, the material of the positioning track 7 is aluminum alloy, so that the positioning track 7 is bent synchronously when the shaping pipe 4 is bent, the monitoring mechanism is driven to move in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 by the magnetic coil 9, the gas concentration of the air in the coal mine is monitored on the surface of the monitor 10 through the monitoring pipe 11, and the external gas concentration is monitored on the surface of the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5 through the air inlet pipe 6, the magnet column 15 is slidingly connected in the sliding groove 8 of the positioning track 7, the magnetic coil 9 of the positioning track 7 is connected to the power supply, the magnet column 15 is moved by the magnetic coil 9, so that the monitor 10 moves in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5, and when the monitor 10 moves into the shaping pipe 4, the compression spring 16 is changed by different bending, so that the magnet column 15 is always inside the sliding groove 8, thereby facilitating the stable movement of the monitor 10 in the first mounting pipe 3, the shaping pipe 4 and the second mounting pipe 5, the pipe is sleeved by the installation ring 17 and the lap joint ring 18, the bottom iron core 23 is connected to the power supply by the power connector 22, the iron core 23 is electrified to form a positive magnetic suction plate, so that the positive magnetic suction plate formed by the iron core 23 is stably connected with the negative magnetic suction plate 19, thereby stably connecting the installation ring 17 and the lap joint ring 18, and after the iron core 23 is de-energized, the installation ring 17 and the lap joint ring 18 are easily disassembled, the worker rotates the handle 27, and the fixing bolt 26 is stably inserted into the wall, thereby facilitating the stable installation of the pipe.

[0051] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A coal mine gas extraction concentration monitoring and early warning device, characterized in that, include: The main body of the monitoring agency (1); A connecting pipe (2) is fixedly connected to the middle of the bottom of the main body (1) of the monitoring mechanism. A first installation pipe (3) is fixedly connected to the bottom end of the connecting pipe (2). A plastic tube (4) is fixedly connected to one end of the first installation pipe (3). A second installation pipe (5) is fixedly connected to one end of the plastic tube (4). An air inlet pipe (6) is fixedly connected to one side of the surface of the first installation pipe (3), the plastic tube (4), and the second installation pipe (5). The first mounting tube (3), the plastic tube (4) and the second mounting tube (5) are all fixedly connected to one side of the bottom wall of the positioning tube (7). The positioning tube (7) is made of aluminum alloy. The middle of both sides of the positioning tube (7) is provided with sliding grooves (8). The middle of the inner wall of the positioning tube (7) is fixedly connected with a magnetic coil (9), and the two sides of the magnetic coil (9) are set on one side of the sliding groove (8).

2. The coal mine gas extraction concentration monitoring and early warning device according to claim 1, characterized in that: A monitor (10) is attached to one side of the top of the positioning track (7), a monitoring tube (11) is fixedly connected to one side of the surface of the monitor (10), and mounting plates (12) are fixedly connected to both sides of the bottom of the monitor (10).

3. The coal mine gas extraction concentration monitoring and early warning device according to claim 2, characterized in that: Multiple socket frames (13) are fixedly connected to one side of the surface of the mounting plate (12). A connecting post (14) is slidably connected to the inner wall of the socket frame (13). A magnet post (15) is fixedly connected to the front end of the connecting post (14), and one side of the surface of the magnet post (15) is slidably connected to the inner wall of the sliding groove (8). Two compression springs (16) are connected to the tail end of the connecting post (14), and one side of the surface of the compression spring (16) is inserted into the inner wall of the socket frame (13).

4. The coal mine gas extraction concentration monitoring and early warning device according to claim 1, characterized in that: One side of the surface of the first mounting tube (3), the plastic tube (4) and the second mounting tube (5) is fitted with a mounting ring (17). One side of the top of the mounting ring (17) is rotatably connected to an overlapping ring (18). The other side of the top of the mounting ring (17) is fixedly connected to a negative magnetic suction plate (19). The middle of the top of the overlapping ring (18) is fixedly connected to a pull rod (20). One side of the top of the overlapping ring (18) is fixedly connected to an assembly box (21). One side of the inner wall of the assembly box (21) is fixedly connected to a contactor (22). The other side of the inner wall of the assembly box (21) is fixedly connected to an iron core (23). The iron core (23) and the contactor (22) are electrically connected to each other. The bottom of the iron core (23) overlaps the top of the negative magnetic suction plate (19). One side of the top of the assembly box (21) is equipped with a control switch (24). The control switch (24) and the contactor (22) are electrically connected to each other.

5. The coal mine gas extraction concentration monitoring and early warning device according to claim 4, characterized in that: A mounting plate (25) is fixedly connected to one side of the top of the mounting ring (17), and a fixing bolt (26) is threadedly connected to both sides of the surface of the mounting plate (25). A handle (27) is fixedly connected to the front end of the fixing bolt (26).

6. The coal mine gas extraction concentration monitoring and early warning device according to claim 1, characterized in that: A sound alarm (28) is fixedly connected to the middle of the surface of the main body (1) of the monitoring mechanism, a light alarm (29) is fixedly connected to the middle of the top of the main body (1) of the monitoring mechanism, and baffles (30) are fixedly connected to the top of both sides of the main body (1).

7. A coal mine gas extraction concentration monitoring and early warning device according to claim 6, characterized in that: A control panel (31) is fixedly connected to one side of the bottom of one of the baffles (30), and a control box (32) is fixedly connected to one side of the bottom of the other baffle (30).

8. A coal mine gas extraction concentration monitoring and early warning device according to claim 7, characterized in that: A controller (33) is fixedly connected to the bottom of the inner wall of the control box (32), a storage battery (34) is fixedly connected to the middle of the inner wall of the control box (32), and a transmitter (35) is fixedly connected to the top of the inner wall of the control box (32). The transmitter (35), the storage battery (34) and the controller (33) are electrically connected to each other.

9. A coal mine gas extraction concentration monitoring and early warning device according to claim 6, characterized in that: Both sides of the top of the two baffles (30) are fixedly connected to an arc frame (36), and a connecting plate (37) is fixedly connected to one side of the top of the arc frame (36). A support rod (38) is fixedly connected to the middle of the top of the connecting plate (37).

10. A coal mine gas extraction concentration monitoring and early warning device according to claim 9, characterized in that: The top end of the support rod (38) is fixedly connected to a right-angle mounting bracket (39), and a mounting bolt (40) is threadedly connected to one side of the surface of the right-angle mounting bracket (39).

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