A coal mine underground gas leakage early warning device

Abstract

The application discloses a coal mine underground gas leakage early warning device, and particularly relates to the technical field of mine gas leakage early warning, which comprises a monitoring seat, a monitoring box is installed on the monitoring seat, a detection processing mechanism is installed on the monitoring box, a traceability mechanism is installed on the monitoring box, the traceability mechanism comprises a first linear driver, an installation block is connected to the output end of the first linear driver, a second linear driver is installed on the installation block, a reference block is installed on the output end of the second linear driver, the second linear driver drives the reference block to move to one side, a reference shaft is installed on the shaft center of the reference block, an umbrella frame assembly is arranged on the outer periphery of the reference shaft, a sealing cover is arranged on the outer periphery of the umbrella frame assembly, and a pit treatment assembly is installed on the end of the reference shaft away from the reference block; the pit treatment assembly comprises a treatment seat, and a third linear driver is installed on one end of the treatment seat. The application can detect true and false leakage points at the pits of the wall body, and avoid traceability misjudgment to delay the repair opportunity and efficiency.

Description

Technical Field

[0001] This invention relates to the field of early warning technology for mine gas leaks, and more specifically, to an early warning device for underground gas leaks in coal mines. Background Technology

[0002] In underground coal mining, gas leaks can lead to catastrophic consequences such as explosions and poisoning. The main locations of gas leaks in mines include the sealed walls of goaf areas. Due to poor sealing of wall joints or observation holes, gas can seep through cracks. To ensure safety in mines, gas leak early warning devices are installed at fixed points in mine roadways to monitor gas leaks in real time.

[0003] However, in the roadways of long-running mine goaf areas, traditional gas leak early warning devices require multiple fixed-point installations, which not only increases the purchase and maintenance costs, but also, when the fixed-point gas leak early warning devices have been in use for a long time, are affected by the dust and humid environment in the mine roadways, resulting in a shortened monitoring range. When the gas leak point on the sealed wall of the mine goaf is located in the middle of two fixed-point gas leak early warning devices, the shortened monitoring range makes it difficult for the fixed-point gas leak early warning devices to detect and issue a danger signal in the first instance. Therefore, the existing emerging technology adopts the inspection-type gas leak early warning device, which is more flexible than the traditional fixed-point gas leak early warning device.

[0004] The patrol-type gas leak early warning device mainly consists of a patrol robot equipped with multiple gas detection sensors. The patrol robot carries the detection sensors and moves along a preset route along the sealed wall of the mine goaf roadway, monitoring the gas concentration at various points on the sealed wall. When the patrol-type gas leak early warning device detects a sudden change in gas concentration at the wall, it promptly issues an early warning signal. In order to accurately locate the gas leak point in the wall for timely repair, the existing patrol-type gas leak early warning device also has a source tracing system. Based on the phenomenon that the gas concentration at the leak point is higher than that at the emission point, the source tracing system can find the leak point crack in the wall. However, the surface of the sealed wall in the mine goaf is uneven, and leaked gas will accumulate in the depressions. When the concentration is higher than the actual leak point, it will cause the source tracing system to mistakenly identify the depression as the leak point, resulting in inaccurate source tracing, delaying the repair opportunity and efficiency, and wasting repair costs. Summary of the Invention

[0005] The present invention provides a gas leak early warning device for underground coal mines, which aims to solve the following problem: In existing inspection-type gas leak early warning devices, when the surface of the sealed wall in the goaf of the mine is uneven, the leaked gas will accumulate in the depression. When the concentration is higher than the actual leak point, the tracing system will mistakenly identify the depression as the leak point, resulting in inaccurate tracing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A coal mine underground gas leak early warning device includes a monitoring base, a monitoring box mounted on the monitoring base, a detection and processing mechanism mounted on the monitoring box, and a source tracing mechanism mounted on the monitoring box. The source tracing mechanism includes a primary linear actuator, the output end of which is connected to a mounting block. A secondary linear actuator is mounted on the mounting block, and a reference block is mounted on the output end of the secondary linear actuator. The secondary linear actuator pushes the reference block to one side. A reference shaft is mounted on the axis of the reference block, and an umbrella frame assembly is provided on the outer periphery of the reference shaft. A sealing cover is provided on the outer periphery of the umbrella frame assembly. A pit treatment component is mounted on the end of the reference shaft away from the reference block. The pit treatment component includes a treatment base, one end of which is mounted with a tertiary linear actuator, and one end of which is mounted with an internal monitoring sensor. An air blowing port is opened on the side of the treatment base corresponding to the tertiary linear actuator. When the detection and processing mechanism detects an increase in gas concentration at a pit in the wall, it aligns the reference shaft with the pit and blows air into the pit through the air blowing port. Then, the pit is sealed by the sealing cover to form a sealed detection chamber. The gas concentration in the sealed detection chamber is detected by the internal monitoring sensor.

[0008] Preferably, the treatment base of the pit treatment component has an air blowing chamber inside, and the air blowing chamber is connected to the air blowing port. A blower is installed inside the air blowing chamber, and the air outlet of the blower is located inside the air blowing chamber. The treatment base of the pit treatment component also has an air storage chamber inside, and the air inlet of the blower is connected to the air storage chamber.

[0009] Preferably, a vision sensor is mounted on the mounting block, located on one side of the secondary linear actuator, and the vision sensor is used to monitor the movement path of the reference block.

[0010] Preferably, the monitoring box is horizontally equipped with a lidar, a temperature and humidity sensor, a positioning sensor and an alarm. The detection and processing mechanism, lidar, temperature and humidity sensor, positioning sensor and alarm are staggered. A maintenance door can be detachably installed on one side of the monitoring box.

[0011] Preferably, the bottom of the monitoring base is provided with a mounting base, on which a vertical drive mechanism is mounted, and the output end of the vertical drive mechanism is connected to the monitoring base.

[0012] Preferably, the umbrella frame assembly includes a sliding sleeve that moves axially along a reference axis. A folding rod is hinged to the outer side of the sliding sleeve, and several groups of folding rods are arranged in a ring. A support rod is hinged between the folding rod and the reference block.

[0013] Preferably, a drive screw is installed on the pit treatment component, and a connecting block is fixedly provided on the sliding sleeve, with the output end of the drive screw connected to the connecting block.

[0014] Preferably, the end of the sealing cover away from the reference block is provided with an annular wall-attaching component, and one end of the annular wall-attaching component protrudes relative to the support rod. The annular wall-attaching component includes a fixing ring, a fixing groove is provided on the fixing ring, and the fixing groove is fixedly connected to the edge of the sealing cover. A fixing sleeve is fixedly provided on one side of the annular wall-attaching component, and the fixing sleeve is connected to the support rod.

[0015] Preferably, a bent ring is fixedly connected to one end of the fixed ring, and a deformable ring is fixedly connected to the end of the bent ring away from the fixed ring, and a hollow cavity is formed inside the deformable ring.

[0016] Preferably, the reference block has a marking cavity inside, the support rod has a hidden groove inside, a marking tube is installed inside the hidden groove, one end of the marking tube has a spray hole, and the marking cavity and the marking tube are connected by a delivery hose.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention uses a sealing cover and a pit treatment component to detect true and false leak points in the wall's recesses, avoiding misjudgment that could delay emergency repairs and reduce efficiency.

[0019] This invention uses a transmission screw to drive the sliding sleeve to move axially along the reference axis. Depending on the direction of movement, the support rod can be opened or closed, thereby flexibly adjusting the coverage area of ​​the flared end of the sealing cover to adapt to pits of different diameters.

[0020] This invention extends the protruding annular wall-mounting component to fit tightly against the wall surface. The bending ring facilitates inward or outward folding, increasing the contact area with the wall surface. The deformable ring abuts against the uneven surface of the wall. The hollow cavity allows the deformable ring to flexibly deform and fit tightly against the uneven surface of the wall, thereby ensuring the sealing effect of the sealing cover on the pit.

[0021] This invention uses a material pump inside the marking chamber to deliver the explosion-proof coating inside the marking chamber to the marking tube via a delivery hose, and finally sprays it out through the spray nozzle to form a mark around the pit. This allows workers to quickly identify and locate the actual leak point pit, and the pit can then be repaired and the mark removed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the traceability mechanism of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the umbrella frame assembly of the present invention;

[0025] Figure 4This is a schematic diagram of the cross-sectional structure of the reference block of the present invention;

[0026] Figure 5 This is a schematic cross-sectional view of the treatment seat structure of the pit treatment component of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the pit treatment component of the present invention;

[0028] Figure 7 This is a schematic diagram of the sealing cover in operation according to the present invention;

[0029] Figure 8 This is a three-dimensional structural diagram of the monitoring box of the present invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the mounting base of the present invention;

[0031] Figure 10 This is a schematic diagram of the annular wall-mounting component structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the end structure of the support rod of the present invention.

[0033] In the diagram: 1. Monitoring base; 2. Monitoring box; 21. Detection and processing mechanism; 22. LiDAR; 23. Temperature and humidity sensor; 24. Positioning sensor; 25. Alarm; 26. Inspection door; 3. Traceability mechanism; 31. Primary linear actuator; 32. Mounting block; 33. Secondary linear actuator; 34. Reference block; 341. Marking cavity; 342. Delivery hose; 35. Reference shaft; 36. Umbrella frame assembly; 361. Sliding sleeve; 362. Folding rod; 363. Support rod; 364. Connecting block; 365. Hidden groove; 366. 367. Marking tube; 37. Spray nozzle; 38. Sealing cover; 39. Annular wall-mounting assembly; 30. Fixing ring; 31. Bending ring; 32. Deformation ring; 33. Fixing sleeve; 34. Fixing groove; 35. Hollow cavity; 36. Pits / dents treatment assembly; 37. Drive screw; 38. Three-stage linear actuator; 39. Internal monitoring sensor; 30. Air outlet; 31. Air chamber; 32. Air blower; 33. Air storage chamber; 44. Vision sensor; 55. Mounting base; 66. Wall; 77. Pits. Detailed Implementation

[0034] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0035] Example 1, refer to the appendix of the instruction manual Figure 1 and Figure 2 The structure shown is a coal mine underground gas leak early warning device, including a monitoring base 1, a monitoring box 2 installed on the monitoring base 1, and a detection and processing mechanism 21 installed on the monitoring box 2. (Refer to the attached instruction manual.) Figure 4 The structure shown includes a traceability mechanism 3 mounted on the monitoring box 2. The traceability mechanism 3 includes a primary linear actuator 31, the output of which is connected to a mounting block 32. A secondary linear actuator 33 is mounted on the mounting block 32. A reference block 34 is mounted on the output of the secondary linear actuator 33, and the secondary linear actuator 33 pushes the reference block 34 to one side. A reference shaft 35 is mounted on the axis of the reference block 34. An umbrella frame assembly 36 is provided around the outer periphery of the reference shaft 35, and a sealing cover 37 is provided around the outer periphery of the umbrella frame assembly 36. A pit treatment assembly 38 is mounted on the end of the reference shaft 35 furthest from the reference block 34. (See accompanying instruction manual.) Figure 3 and Figure 5 The structure shown includes a pit treatment assembly 38 comprising a treatment base, a three-stage linear actuator 382 mounted at one end of the treatment base, an internal monitoring sensor 383 mounted at the other end of the three-stage linear actuator 382, ​​and an air inlet 384 on the side of the treatment base corresponding to the three-stage linear actuator 382; see attached manual. Figure 6 and Figure 7 As shown in the structure, the detection and processing mechanism 21 detects an increase in gas concentration at the pit 6 in the wall 5, aligns the reference axis 35 with the pit 6, blows air into the pit 6 through the air outlet 384, and then seals the pit 6 through the sealing cover 37 to form a sealed detection chamber. The gas concentration in the sealed detection chamber is detected by the internal monitoring sensor 383.

[0036] It should be noted that the detection and processing unit 21 includes detection devices and processing devices. The processing device, as the processing center, adopts a PLC control processor with existing technology, which can process the detection data and remotely upload it to the computer in the control room or the handheld terminal of the maintenance personnel. This facilitates the recording and on-site processing of the detection data after the computer in the control room or the handheld terminal of the maintenance personnel receives the data. The detection device adopts existing gas monitoring technology, such as infrared spectral gas sensor monitoring technology, catalytic combustion gas sensor monitoring technology, or semiconductor gas sensor monitoring technology.

[0037] It should be further explained that the internal monitoring sensor 383 includes a distance sensor and a concentration sensor of the prior art. The internal monitoring sensor 383 is driven into the pit 6 by the three-stage linear actuator 382 to detect the depth and gas concentration of the pit 6.

[0038] In this embodiment, the present invention uses a detection and processing mechanism 21 to detect the gas concentration at the wall 5. When the gas concentration at the wall 5 exceeds the upper limit, the source tracing operation is initiated. The monitoring box 2 continues to move forward, and the detection and processing mechanism 21 also detects the surrounding gas concentration. Based on the phenomenon that the gas concentration at the leak point is higher than that at the emission point, the gas leak point at the wall 5 is identified. When there is a pit 6 in the wall 5, the leaked gas around it will converge and accumulate at the pit 6. In order to determine whether the pit 6 is the actual leak point, the primary linear actuator 31 first pushes the reference block 34 to one side closer to the pit 6, and then the tertiary linear actuator 382 pushes the internal monitoring sensor 383 into the pit 6. The depth of pit 6 and its initial internal gas concentration are detected and uploaded to the processing device of the detection and processing unit 21. When the initial gas concentration inside pit 6 is high, the blowing pressure, flow rate, and duration are automatically calculated based on the depth of pit 6 and the initial internal gas concentration. Air is blown into pit 6 through blowing port 384, preferably using inert gas such as nitrogen. This blowing method reduces the gas concentration inside pit 6, preventing the gas concentration from continuing to increase after the sealing cover 37 closes pit 6 if pit 6 is a real leak point. That is, the internal pressure of pit 6 increases after closure. When the pressure exceeds the design pressure limit of sealing cover 37 and pit treatment component 38, it will directly lead to the sealing cover 37 and pit treatment component 38 leaking. Due to physical damage to the treatment component 38, the initial concentration of gas in the pit 6 is first reduced by blowing air to create a "safe detection window" for the sealing cover 37 and the pit treatment component 38. The internal monitoring sensor 383 is then retracted, and the first-stage linear actuator 31 pushes the reference block 34 closer to the pit 6 until the sealing cover 37 completely encloses the pit 6 to form a sealed detection chamber. Finally, the concentration sensor of the internal monitoring sensor 383 detects whether the gas concentration in the sealed detection chamber continues to increase. If the gas concentration in the sealed detection chamber continues to increase, it indicates that the pit 6 is a real leak point. If the gas concentration in the sealed detection chamber gradually stabilizes, it indicates that the pit 6 is a false leak point. Then, the monitoring box 2 continues to move forward to perform source tracing work. The process continues until the actual leak point is found. Finally, the location of the actual leak point and the gas concentration detection results are uploaded to the control room computer or the handheld terminal of the maintenance personnel through the detection and treatment unit 21. It should be noted that even if the actual leak point does not have a pit 6, the location of the actual leak point and the gas concentration detection results can still be uploaded to the control room computer or the handheld terminal of the maintenance personnel. The data upload technology is a common technology, such as wireless data transmission technology. After the maintenance personnel arrive at the site, they can quickly and accurately find the gas leak point in the wall based on the detection results so as to carry out timely repairs. The sealing cover 37 and the pit treatment component 38 can detect the true and false leak points at the pit 6 in the wall 5, avoiding misjudgment in tracing the source and delaying the repair time and efficiency.

[0039] Further, please refer to the appendix to the instruction manual. Figure 5As shown in the structure, the processing seat of the pit treatment component 38 has an air blowing chamber 385 inside, and the air blowing chamber 385 is connected to the air blowing port 384. A blower 386 is installed inside the air blowing chamber 385, and the air outlet of the blower 386 is located inside the air blowing chamber 385. The processing seat of the pit treatment component 38 also has an air storage chamber 387 inside, and the air inlet of the blower 386 is connected to the air storage chamber 387.

[0040] It should be noted that the blower 386 uses an air pump or a blower to draw the gas inside the air storage chamber 387 into the air blowing chamber 385, and then discharges it at high speed through the air blowing port 384. The treatment seat of the pit treatment component 38 is provided with an air filling hole corresponding to the air storage chamber 387 to facilitate the replenishment of gas into the air storage chamber 387.

[0041] For further details, please refer to the instruction manual appendix. Figure 2 As shown in the structure, a vision sensor 39 is mounted on the mounting block 32. The vision sensor 39 is located on one side of the secondary linear actuator 33 and is used to monitor the movement path of the reference block 34.

[0042] It should be noted that the primary linear actuator 31 and the secondary linear actuator 33 provide secondary extension, the vision sensor 39 provides positioning for the reference axis 35, and provides video data, which can be saved and uploaded to the detection and processing mechanism 21.

[0043] For further details, please refer to the instruction manual appendix. Figure 8 As shown in the structure, the monitoring box 2 is horizontally equipped with a lidar 22, a temperature and humidity sensor 23, a positioning sensor 24 and an alarm 25. The detection and processing mechanism 21, lidar 22, temperature and humidity sensor 23, positioning sensor 24 and alarm 25 are staggered. A maintenance door 26 is detachably installed on one side of the monitoring box 2.

[0044] It should be noted that the lidar 22 serves as a navigation device, the temperature and humidity sensor 23 serves as a temperature and humidity sensor, the positioning sensor 24 serves as a positioning device, the alarm 25 serves as an alarm device, and the access door 26 facilitates the maintenance of the internal components of the monitoring box 2.

[0045] For further details, please refer to the instruction manual appendix. Figure 9 As shown in the structure, the bottom of the monitoring base 1 is provided with a mounting base 4, and a vertical drive mechanism 41 is mounted on the mounting base 4, and the output end of the vertical drive mechanism 41 is connected to the monitoring base 1.

[0046] It should be noted that the mounting base 4 is installed on the inspection track or inspection vehicle inside the mine. The moving monitoring base 1 moves along the inspection route, and the working height of the monitoring base 1 is adjusted by the vertical drive mechanism 41 so as to cover the high, middle and low layers of the wall 5.

[0047] Example 2: To adapt the sealing cover 37 to recesses 6 of different diameters, refer to the attached instruction manual. Figure 3 and Figure 4 As shown in the embodiment, the following solution is provided: the umbrella frame assembly 36 includes a sliding sleeve 361, and the sliding sleeve 361 moves axially along the reference axis 35. A folding rod 362 is hinged to the outer side of the sliding sleeve 361, and several groups of folding rods 362 are arranged in a ring. A support rod 363 is hinged between the folding rod 362 and the reference block 34.

[0048] It should be noted that the end of the folding rod 362 away from the sliding sleeve 361 is hinged to the middle of the support rod 363 near the reference block 34 at one-third of its length. When the sliding sleeve 361 moves closer to the reference block 34, the folding rod 362 flips and pushes the end of the support rod 363 away from the reference block 34 to expand outward, that is, one end of the support rod 363 moves away from the reference axis 35. When the sliding sleeve 361 moves in the opposite direction, the support rod 363 moves closer to the reference axis 35 and closes. The action of the umbrella frame assembly 36 is similar to the opening and closing action of an umbrella, which can be flexibly adjusted. The sealing area of ​​the support rod 363 and the sealing cover 37 is adapted to the recesses 6 of different diameters. The sealing cover 37 is a component made of elastic and airtight material. One end of the sealing cover 37 is sealed and connected to the reference block 34. The sealing cover 37 is fitted on the outside of the support rod 363 away from the folding rod 362. The sealing cover 37 can also adopt a folding design to further increase the expansion space. The sealing cover 37 is cone-shaped with the support of the umbrella frame assembly 36, and the tip of the sealing cover 37 is closed by the reference block 34. The wide end of the sealing cover 37 is used to close the recesses 6.

[0049] Furthermore, please refer to the attached instruction manual. Figure 3 and Figure 5 As shown in the structure, a transmission screw 381 is installed on the pit treatment component 38, and a connecting block 364 is fixedly provided on the sliding sleeve 361. The output end of the transmission screw 381 is connected to the connecting block 364.

[0050] It should be noted that the sliding sleeve 361 is automatically driven to move along the reference axis 35 via the transmission screw 381.

[0051] In this embodiment, the present invention drives the sliding sleeve 361 to move axially along the reference axis 35 via the transmission screw 381. Depending on the direction of movement, the support rod 363 can be opened or closed, thereby flexibly adjusting the coverage area of ​​the flared end of the sealing cover 37 to adapt to pits 6 of different diameters.

[0052] Example 3: To ensure the sealing effect of the sealing cover 37 on the pit 6, please refer to the attached instruction manual. Figure 7 and Figure 10The structure shown in this embodiment provides the following solution: A ring-shaped wall-attaching assembly 371 is provided at one end of the sealing cover 37 away from the reference block 34, and one end of the ring-shaped wall-attaching assembly 371 protrudes relative to the support rod 363. The ring-shaped wall-attaching assembly 371 includes a fixing ring 372, a fixing groove 376 is provided on the fixing ring 372, and the fixing groove 376 is fixedly connected to the edge of the sealing cover 37. A fixing sleeve 375 is fixedly provided on one side of the ring-shaped wall-attaching assembly 371, and the fixing sleeve 375 is connected to the support rod 363.

[0053] It should be noted that the annular wall-mounted component 371 is fixedly connected to the support rod 363 through the fixing sleeve 375, and then the sealing cover 37 is connected through the fixing groove 376.

[0054] Further, please refer to the attached instruction manual. Figure 10 As shown in the structure, one end of the fixed ring 372 is fixedly connected to the bent ring 373, and the end of the bent ring 373 away from the fixed ring 372 is fixedly connected to the deformable ring 374, and the interior of the deformable ring 374 is provided with a hollow cavity 377.

[0055] It should be noted that the elasticity of the bending ring 373 is greater than that of the fixed ring 372, making it easier to bend. The elasticity of the deformable ring 374 is greater than that of the bending ring 373, and it is easy to deform through the hollow cavity 377, making it suitable for the uneven surface of the wall 5.

[0056] In this embodiment, the present invention extends the protruding annular wall-mounting component 371 to fit tightly against the surface of the wall 5, and the bending ring 373 facilitates inward or outward folding to increase the contact area with the surface of the wall 5. The deformable ring 374 abuts against the concave and convex surfaces of the wall 5, and the hollow cavity 377 facilitates the flexible deformation of the deformable ring 374 to fit tightly against the concave and convex surfaces of the wall 5, thereby ensuring the sealing effect of the sealing cover 37 on the pit 6.

[0057] Example 4: To facilitate the location of pit 6 for staff, please refer to the attached instruction manual. Figure 4 and Figure 11 As shown in the embodiment, the following solution is provided: a marking cavity 341 is provided inside the reference block 34, a hidden groove 365 is provided inside the support rod 363, a marking tube 366 is installed inside the hidden groove 365, a spray hole 367 is provided at one end of the marking tube 366, and the marking cavity 341 and the marking tube 366 are connected by a delivery hose 342.

[0058] It should be noted that a material pump is installed inside the marking chamber 341, and the marking chamber 341 also stores marking materials, such as explosion-proof coatings.

[0059] In this embodiment, when pit 6 is detected as a real leak point, the explosion-proof coating inside the marking chamber 341 is transported to the marking tube 366 through the delivery hose 342 by the material pump inside the marking chamber 341, and finally sprayed out through the spray hole 367 to form a mark on the periphery of pit 6. This facilitates the rapid identification and location of the real leak point pit 6 by the staff, and pit 6 can be repaired and the mark removed afterward.

[0060] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A coal mine underground gas leakage early warning device, comprising a monitoring seat (1), a monitoring box (2) is installed on the monitoring seat (1), and a detection processing mechanism (21) is installed on the monitoring box (2), characterized in that: The monitoring box (2) is provided with a traceability mechanism (3), the traceability mechanism (3) comprises a first linear driver (31), the output end of the first linear driver (31) is connected with a mounting block (32), the mounting block (32) is provided with a second linear driver (33), the output end of the second linear driver (33) is provided with a reference block (34), the second linear driver (33) drives the reference block (34) to move to one side, the axis of the reference block (34) is provided with a reference shaft (35), the outer periphery of the reference shaft (35) is provided with a umbrella assembly (36), the outer periphery of the umbrella assembly (36) is provided with a sealing cover (37), and the end, away from the reference block (34), of the reference shaft (35) is provided with a pit processing assembly (38): The pit processing assembly (38) comprises a processing seat, one end of the processing seat is provided with a third linear driver (382), one end of the third linear driver (382) is provided with an internal monitoring sensor (383), and one side of the processing seat corresponding to the third linear driver (382) is provided with a blowing port (384). The detection processing mechanism (21) detects that the gas concentration at the pit (6) of the wall body (5) increases, aligns the pit (6) through the reference shaft (35), blows air to the pit (6) through the blowing port (384), then seals the pit (6) through the sealing cover (37) to form a sealed detection chamber, and detects the gas concentration in the sealed detection chamber through the internal monitoring sensor (383).

2. The coal mine underground gas leakage early warning device according to claim 1, characterized in that, The processing seat of the pit processing assembly (38) is internally provided with a blowing cavity (385), and the blowing cavity (385) is in communication with the blowing port (384), the blowing cavity (385) is internally provided with a blower (386), and the air outlet of the blower (386) is arranged in the blowing cavity (385), and the processing seat of the pit processing assembly (38) is internally provided with a gas storage cavity (387), and the air inlet of the blower (386) is in communication with the gas storage cavity (387).

3. The coal mine underground gas leakage early warning device according to claim 2, characterized in that, The mounting block (32) is provided with a visual sensor (39), the visual sensor (39) is located on one side of the second linear driver (33), and the visual sensor (39) is used for monitoring the movement route of the reference block (34).

4. The coal mine underground gas leakage early warning device according to claim 3, characterized in that, The monitoring box (2) is provided with a laser radar (22), a temperature and humidity sensor (23), a positioning sensor (24) and an alarm (25) in the transverse direction, the detection processing mechanism (21), the laser radar (22), the temperature and humidity sensor (23), the positioning sensor (24) and the alarm (25) are arranged in a staggered manner, and the monitoring box (2) is detachably provided with an access door (26) on one side.

5. The coal mine underground gas leakage early warning device according to claim 4, characterized in that, The bottom of the monitoring seat (1) is provided with a mounting seat (4), and the mounting seat (4) is provided with a vertical driving mechanism (41), and the output end of the vertical driving mechanism (41) is connected with the monitoring seat (1).

6. The coal mine underground gas leakage early warning device according to claim 5, characterized in that, The umbrella frame assembly (36) comprises a sliding sleeve (361), which moves axially along the reference shaft (35), and a folding rod (362) is hinged to the outer side of the sliding sleeve (361), and the folding rod (362) is arranged in a plurality of groups in a ring shape, and a support rod (363) is hinged between the folding rod (362) and the reference block (34).

7. The coal mine underground gas leakage early warning device according to claim 6, characterized in that, The pit treatment assembly (38) is provided with a transmission screw rod (381), and the sliding sleeve (361) is fixedly provided with a connecting block (364), and the output end of the transmission screw rod (381) is connected with the connecting block (364).

8. The coal mine underground gas leakage early warning device according to claim 7, characterized in that, The sealing cover (37) is provided with an annular wall sticking assembly (371) at the end away from the reference block (34), and one end of the annular wall sticking assembly (371) is protrudingly arranged relative to the support rod (363), the annular wall sticking assembly (371) comprises a fixed ring (372), a fixed groove (376) is formed in the fixed ring (372), and the fixed groove (376) is fixedly connected with the edge of the sealing cover (37), a fixed sleeve (375) is fixedly arranged on one side of the annular wall sticking assembly (371), and the fixed sleeve (375) is connected with the support rod (363).

9. The coal mine underground gas leakage early warning device according to claim 8, characterized in that, One end of the fixed ring (372) is fixedly connected with a bent ring (373), one end of the bent ring (373) away from the fixed ring (372) is fixedly connected with a deformed ring (374), and a hollow cavity (377) is formed in the deformed ring (374).

10. The coal mine underground gas leakage early warning device according to claim 9, characterized in that, The reference block (34) is provided with a marking cavity (341) in the inside, the support rod (363) is provided with a hidden groove (365) in the inside, the hidden groove (365) is provided with a marking pipe (366) in the inside, one end of the marking pipe (366) is provided with a spray hole (367), and the marking cavity (341) and the marking pipe (366) are communicated through a conveying hose (342).

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