Coal mine pressure monitoring device and method

Abstract

The present invention belongs to the field of mine pressure monitoring technology, and in particular to a coal mine pressure monitoring device and method. The following scheme is proposed, including a mounting column and a sleeve frame, wherein mounting rods are distributed in a ring shape on the top of the sleeve frame, and a protective assembly is provided on the outside of the plurality of mounting rods, wherein the protective assembly includes two protective nets, an inner ring frame, and an outer ring frame. The present invention is provided with a protective assembly, and during the use of the image capturer and the pressure monitor, the image capturer and the pressure monitor are protected by a double-layer protective net. When a small-volume falling object passes through the two layers of protective nets, its impact is weakened. When it reaches above the image capturer and the pressure monitor, its downward impact cannot cause any damage to them. When a large-volume falling object falls on the upper protective net, the protective net is squeezed and sunken, and the spring rod under the pressure-bearing fitting rod is passively compressed. The elastic potential energy of the spring rod's reset drives the upper protective net to bounce off the large-volume falling object, preventing it from accumulating on the protective net and causing damage to the protective net.

Description

Technical Field

[0001] The present invention relates to the technical field of mine pressure monitoring, and in particular to a coal mine pressure monitoring device and method. Background Art

[0002] Coal mines are areas where humans exploit coal resources in coal-rich mining areas. They are generally divided into underground and open-pit mines. When coal seams are far from the surface, tunnels are typically excavated underground, which is considered an underground mine. When coal seams are very close to the surface, coal is typically extracted by directly removing the surface soil, which is considered an open-pit mine. The vast majority of coal mines in my country are underground mines. Coal mines encompass a large area, both above and below ground, as well as related facilities. Coal mines are the spaces humans create when mining coal-rich geological formations, typically including tunnels, shafts, and mining faces. Coal is the primary solid fuel and a type of combustible organic rock. It is formed by the natural coalification process over long periods of time, when lush vegetation grows over a certain geological period. Under favorable geological conditions, it gradually accumulates into thick layers and is buried under water or mud. Among the geological periods worldwide, the Carboniferous, Permian, Jurassic, and Tertiary periods have the highest coal production, representing important coal-forming periods. Coal typically contains 46-97% carbon, is brown to black, and has a dull to metallic luster. Depending on the degree of coalification, coal can be divided into four categories: peat, lignite, bituminous coal, and anthracite. Coal remains my country's primary energy source today, and safe coal production is crucial during its mining. Coal mine pressure monitoring technology plays a crucial role in timely and effective monitoring of mine pressure, accurately understanding the patterns of pressure in the stope, improving the quality of roadway support, and ensuring safe coal production.

[0003] In the existing coal mining process, it is necessary to monitor the interior of the mine tunnel in real time through a mine pressure monitoring device. The conventional monitoring method uses an image camera and a pressure monitor to monitor the image and pressure inside the mine tunnel in real time, so as to ensure the safety of the mine tunnel during use. However, the image camera and the pressure monitor are easily affected by falling objects inside the mine tunnel during use. The impact of large falling objects can easily cause damage to the image camera and the pressure monitor, resulting in the image camera and the pressure detector needing regular maintenance and replacement, reducing the use value of the coal mine pressure monitoring device. Summary of the Invention

[0004] The present invention proposes a coal mine pressure monitoring device, including a mounting column and a sleeve frame, wherein mounting rods are distributed in a ring shape on the top of the sleeve frame, and a protective assembly is provided on the outer side of multiple mounting rods, the protective assembly includes two protective nets, an inner ring frame and an outer ring frame, and the inner ring frame is fixedly connected to the outer side of multiple mounting rods, and the protective net is fixedly connected to the outer side of the inner ring frame and the outer ring frame, and the outer sides of multiple mounting rods located between the inner ring frame and the outer ring frame are fixedly connected to fixing rods, and the other end of each fixing rod is fixedly connected to the outer side of the outer ring frame, the top of the fixing rod is fixedly connected to a support rod, and the top of the support rod is fixedly connected to a push rod, and the two ends of the top of the push rod are fixedly connected to spring rods, and the other ends of the two spring rods are fixedly connected to pressure-bearing fitting rods, and the pressure-bearing fitting rods are in contact with the protective net.

[0005] As a further solution of the present invention, a sliding groove is opened on the outer side of the mounting column, and a sliding block is slidably connected to the inner wall of the sliding groove, the sliding block is fixedly connected to the inner side of the sleeve frame, and the outer side of the mounting column above the sliding groove is fixedly connected to a side block, the bottom of the side block is fixedly connected to a cylinder, and the output end of the cylinder is fixedly connected to the top of the sliding block.

[0006] As a further solution of the present invention, a connecting block is fixedly connected to the outer side of the sleeve frame, and a monitoring component is provided on the outer side of the connecting block. The monitoring component includes a hollow sphere 1 and a hollow sphere 2.

[0007] When the image capturer and pressure monitor are in working condition, start the air pump, which will introduce the gas filtered by the spherical filter into the hollow sphere, and then discharge it through the exhaust hole. The discharged gas drives the gas outside the image capturer and pressure monitor to flow rapidly, thereby preventing the dust in the mine from adhering to the outside of the image capturer and pressure monitor over a large area, ensuring the accuracy of the monitoring results. The rapid flow of gas can take some small particles of suspended matter away from the image capturer and pressure monitor, further optimizing the working environment of both.

[0008] As a further solution of the present invention, the hollow sphere is fixedly connected to the outside of the connecting block, and exhaust holes are opened at equal distances on the outside of the hollow sphere. The inside of the hollow sphere is fixedly connected to a pump rack, the bottom of the pump rack is fixedly connected to an air pump, and the air delivery end of the air pump is located inside the hollow sphere.

[0009] As a further solution of the present invention, a spherical filter is fixedly connected to the interior of the hollow sphere No. 2, and an air inlet pipe is fixedly connected to the air inlet end of the air pump, the other end of the air inlet pipe is located in the spherical filter, and air inlet holes are opened at equal distances on the outside of the hollow sphere No. 2.

[0010] As a further solution of the present invention, the outer sides of the hollow sphere one and the hollow sphere two are fixedly connected to the same connecting rod, and the outer side of the hollow sphere one is fixedly connected to an annular electric guide rail, the inner side of the annular electric guide rail is slidably connected to a rotating block, the outer side of the rotating block is fixedly connected to a mounting block, and the outer side of the mounting block is fixedly connected to an image camera.

[0011] As a further solution of the present invention, two racks are fixedly connected to the outer side of the annular electric guide rail, and pressure monitors are fixedly connected to the outer walls of the same side of the two racks. The two pressure monitors are located at the upper and lower ends of the intake pipe.

[0012] As a further solution of the present invention, a connecting assembly is provided on the top of the mounting column, and the connecting assembly includes a connecting frame, a telescopic plate and an intermediate telescopic rod.

[0013] As a further solution of the present invention, the connecting frame is fixedly connected to the top of the mounting column, and embedding holes are opened at equal distances on the top of the connecting frame, a pile body is inserted into the inside of each embedding hole, the telescopic plate is connected to the outside of the connecting frame by a hinge, the two telescopic plates are located on the outside and are fixedly connected with embedding teeth at equal distances, both sides of the two telescopic plates are fixedly connected with extension rods, the end of the extension rod away from the telescopic plate is in the shape of a circular shaft, the outside of each extension rod is sleeved with a rotating ring, and the middle telescopic rod is fixedly connected to the outside of the two extension rods located on one side.

[0014] A method for using a coal mine pressure monitoring device is applied to the above-mentioned coal mine pressure monitoring device, and the method comprises the following steps:

[0015] S1: When installing the monitoring device, the pile is driven into the top of the mine tunnel, and then the telescopic plate is pulled to its maximum length. The plate is then attached to the wall of the mine tunnel and the embedded teeth are nailed into the wall.

[0016] S2: During the use of the monitoring equipment, the regulating cylinder drives the sliding block to slide on the inner wall of the sliding groove, thereby driving the image capturer and pressure monitor to move up and down, realizing shooting and monitoring at different height levels. During the operation of the image capturer and pressure monitor, the air pump is started, and the air pump guides the gas filtered by the spherical filter into the hollow sphere 1, and then discharges it through the exhaust hole. The discharged gas drives the gas outside the image capturer and pressure monitor to flow rapidly, thereby preventing dust in the mine tunnel from adhering to the outside of the image capturer and pressure monitor over a large area;

[0017] S3: When a falling object occurs, when a small falling object passes through two layers of protective nets, its impact is weakened. When it reaches above the image camera and pressure monitor, its downward impact cannot cause any damage to them. When a large falling object falls on the upper protective net, the protective net is squeezed and sunken, and the spring rod under the pressure-bearing fitting rod is passively compressed. The elastic potential energy of the spring rod's reset drives the upper protective net to bounce off the large falling object.

[0018] The beneficial effects of the present invention are:

[0019] 1. By providing a protective component, the image capturer and pressure monitor are protected by a double-layer protective net during use. When a small falling object passes through the two layers of protective nets, its impact is weakened. When it reaches the top of the image capturer and pressure monitor, its downward impact cannot cause any damage to them. When a large falling object falls on the upper protective net, the protective net is squeezed and sunken, and the spring rod under the pressure-bearing fitting rod is passively compressed. The elastic potential energy of the spring rod's reset drives the upper protective net to bounce off the large falling object, preventing it from accumulating on the protective net and causing damage to the protective net. The protective component ensures that the image capturer and pressure monitor located below work in a safe environment, thereby extending the service life of the image capturer and pressure monitor, and improving the use value of the mine pressure monitoring device.

[0020] 2. By setting up a monitoring component, when the image capturer and pressure monitor are in working state, the air pump is started, and the air pump will introduce the gas filtered by the spherical filter into the hollow sphere, and then discharge it through the exhaust hole. The discharged gas drives the gas outside the image capturer and pressure monitor to flow rapidly, thereby preventing dust in the mine from adhering to the outside of the image capturer and pressure monitor over a large area, ensuring the accuracy of the monitoring results. The rapid flow of gas can remove some small particles of suspended matter from the image capturer and pressure monitor, further optimizing the working environment of both.

[0021] 3. By setting up a connecting component, when installing the monitoring device, the pile body is driven into the top of the mine tunnel, and then the telescopic plate is pulled to stretch the telescopic plate to the maximum length, and it is attached to the wall of the mine tunnel. The embedded teeth are nailed into the wall, thereby forming a triangular structure through the middle telescopic rod, telescopic plate and connecting frame to ensure the firmness of the mine pressure monitoring device after installation and avoid it from falling off due to the vibration of various equipment in the mine tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a coal mine pressure monitoring device and method proposed by the present invention;

[0023] Figure 2 This is a front view of the overall structure of a coal mine pressure monitoring device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of a protective component of a coal mine pressure monitoring device proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a single protective net of a coal mine pressure monitoring device proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of a monitoring component of a coal mine pressure monitoring device proposed by the present invention;

[0027] Figure 6 for Figure 5 A partial structural cross-sectional view;

[0028] Figure 7 This is a schematic diagram of the connection components of a coal mine pressure monitoring device proposed by the present invention.

[0029] In the figure: 1. Mounting column; 2. Monitoring assembly; 201. Hollow sphere 1; 202. Air inlet; 203. Hollow sphere 2; 204. Air inlet pipe; 205. Annular electric guide rail; 206. Rack; 207. Pressure monitor; 208. Mounting block; 209. Image capture device; 210. Rotating block; 211. Exhaust hole; 212. Connecting rod; 213. Spherical filter; 214. Pump rack; 215. Air pump; 3. Connecting assembly; 301. Connecting Connecting frame; 302, embedded teeth; 303, pile body; 304, telescopic plate; 305, middle telescopic rod; 306, extension rod; 307, rotating ring; 4, side block; 5, protection assembly; 501, protection net; 502, outer ring frame; 503, inner ring frame; 504, fixed rod; 505, pressure-bearing fitting rod; 506, push rod; 507, spring rod; 508, support rod; 6, cylinder; 7, mounting rod; 8, sleeve frame; 9, connecting block; 10, sliding block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-7A coal mine pressure monitoring device includes a mounting column 1 and a sleeve frame 8. The top of the sleeve frame 8 is annularly distributed with mounting rods 7, and a plurality of mounting rods 7 are provided on the outside of a protective assembly 5. The protective assembly 5 includes two protective nets 501, an inner ring frame 503 and an outer ring frame 502. The inner ring frame 503 is fixedly connected to the outside of the plurality of mounting rods 7. The protective net 501 is fixedly connected to the outside of the inner ring frame 503 and the outer ring frame 502. The plurality of mounting rods 7 are located on the inner ring frame 503 and the outer ring frame 502. The outer sides of the two ring frames 502 are fixedly connected with fixing rods 504, and the other end of each fixing rod 504 is fixedly connected to the outer side of the outer ring frame 502, the top of the fixing rod 504 is fixedly connected with a support rod 508, and the top of the support rod 508 is fixedly connected with a push rod 506, and the top ends of the push rods 506 are fixedly connected with spring rods 507, and the other ends of the two spring rods 507 are fixedly connected with pressure-bearing fitting rods 505, and the pressure-bearing fitting rods 505 are in contact with the protective net 501;

[0032] It is protected by a double-layer protective net 501. When a small falling object passes through the two layers of protective nets 501, its impact is weakened. When it reaches above the image capture device 209 and the pressure monitor 207, its downward impact cannot cause any damage to them. When a large falling object falls on the upper protective net 501, the protective net 501 is squeezed and sunken, and the spring rod 507 below the pressure-bearing fitting rod 505 is passively compressed. The elastic potential energy of the spring rod 507 when it is reset drives the upper protective net 501 to bounce off the large falling object, preventing it from accumulating on the protective net 501 and causing damage to the protective net 501. The protective component 5 ensures that the image capture device 209 and the pressure monitor 207 located below work in a safe environment, thereby extending the service life of the image capture device 209 and the pressure monitor 207 and improving the use value of the mine pressure monitoring device.

[0033] Reference Figure 1 and Figure 2 A sliding groove is opened on the outside of the mounting column 1, and a sliding block 10 is slidably connected to the inner wall of the sliding groove. The sliding block 10 is fixedly connected to the inner side of the sleeve frame 8. The outer side of the mounting column 1 above the sliding groove is fixedly connected to the side block 4. The bottom of the side block 4 is fixedly connected to the cylinder 6, and the output end of the cylinder 6 is fixedly connected to the top of the sliding block 10.

[0034] Reference Figure 1 、 Figure 5 and Figure 6 The outer side of the sleeve frame 8 is fixedly connected to a connecting block 9, and the outer side of the connecting block 9 is provided with a monitoring component 2, which includes a hollow sphere 1 201 and a hollow sphere 203.

[0035] In the present invention, hollow sphere 1 201 is fixedly connected to the outside of the connecting block 9, and exhaust holes 211 are opened at equal distances on the outside of hollow sphere 1 201. The inside of hollow sphere 1 201 is fixedly connected to a pump rack 214, and the bottom of the pump rack 214 is fixedly connected to an air pump 215. The gas delivery end of the air pump 215 is located inside hollow sphere 1 201. The inside of hollow sphere 203 is fixedly connected to a spherical filter 213, and the air inlet end of the air pump 215 is fixedly connected to an air inlet pipe 204. The other end of the air inlet pipe 204 is located in the spherical filter 213. Air inlet holes 202 are opened at equal distances on the outside of hollow sphere 203.

[0036] In the present invention, the outer sides of hollow sphere 1 201 and hollow sphere 2 203 are fixedly connected to a common connecting rod 212, and the outer side of hollow sphere 1 201 is fixedly connected to an annular electric guide rail 205, the inner portion of which is slidably connected to a rotating block 210, the outer side of the rotating block 210 is fixedly connected to a mounting block 208, the outer side of the mounting block 208 is fixedly connected to an image capturer 209, and the outer side of the annular electric guide rail 205 is fixedly connected to two frames 206, and the outer walls of the same side of the two frames 206 are fixedly connected to pressure monitors 207, and the two pressure monitors 207 are located at the upper and lower ends of the intake pipe 204;

[0037] When the image capturer 209 and the pressure monitor 207 are in operation, the air pump 215 is started. The air pump 215 introduces the gas filtered by the spherical filter 213 into the hollow sphere 201, and then discharges it through the exhaust hole 211. The discharged gas drives the gas outside the image capturer and the pressure monitor 207 to flow rapidly, thereby preventing dust in the mine tunnel from adhering to the outside of the image capturer 209 and the pressure monitor 207 over a large area, ensuring the accuracy of the monitoring results. The rapid flow of gas can also carry some small particles of suspended matter away from the image capturer 209 and the pressure monitor 207, further optimizing the working environment of both.

[0038] Reference Figure 1 and Figure 7 A connecting assembly 3 is provided on the top of the mounting column 1 , and the connecting assembly 3 includes a connecting frame 301 , a telescopic plate 304 and an intermediate telescopic rod 305 .

[0039] In the present invention, the connecting frame 301 is fixedly connected to the top of the mounting column 1, and the top of the connecting frame 301 is provided with embedding holes at equal distances, and a pile body 303 is inserted into the inside of each embedding hole. The telescopic plate 304 is connected to the outside of the connecting frame 301 by a hinge, and the two telescopic plates 304 are fixedly connected to the outside at equal distances with embedding teeth 302. Both sides of the two telescopic plates 304 are fixedly connected with extension rods 306, and the end of the extension rod 306 away from the telescopic plate 304 is in the shape of a circular axis. The outside of each extension rod 306 is sleeved with a rotating ring 307, and the middle telescopic rod 305 is fixedly connected to the outside of the two extension rods 306 located on one side.

[0040] A method for using a coal mine pressure monitoring device is applied to the above-mentioned coal mine pressure monitoring device, and the method comprises the following steps:

[0041] S1: When installing the monitoring device, the pile 303 is driven into the top of the mine tunnel, and then the telescopic plate 304 is pulled to stretch it to its maximum length, and then it is attached to the wall of the mine tunnel, and the embedded teeth 302 are nailed into the wall;

[0042] S2: During the use of the monitoring equipment, the regulating cylinder 6 drives the sliding block 10 to slide on the inner wall of the sliding groove, thereby driving the image capturer 209 and the pressure monitor 207 to move up and down, realizing shooting and monitoring at different height levels. During the operation of the image capturer 209 and the pressure monitor 207, the air pump 215 is started. The air pump 215 guides the gas filtered by the spherical filter 213 into the hollow sphere 201, and then discharges it through the exhaust hole 211. The discharged gas drives the gas outside the image capturer and the pressure monitor 207 to flow rapidly, thereby preventing dust in the mine tunnel from adhering to the outside of the image capturer 209 and the pressure monitor 207 over a large area;

[0043] S3: When a falling object occurs, when a small falling object passes through the two layers of protective nets 501, its impact is weakened. When it reaches above the image capture device 209 and the pressure monitor 207, its downward impact cannot cause any damage to them. When a large falling object falls on the upper protective net 501, the protective net 501 is squeezed and sunken, and the spring rod 507 under the pressure-bearing fitting rod 505 is passively compressed. The elastic potential energy of the reset of the spring rod 507 drives the upper protective net 501 to bounce off the large falling object.

[0044] During use, when installing the monitoring device, the pile body 303 is driven into the top of the mine tunnel, and then the telescopic plate 304 is pulled to stretch the telescopic plate 304 to its maximum length, and it is fitted to the wall of the mine tunnel, and the embedded teeth 302 are nailed into the wall. After installation is completed, during the use of the monitoring device, the adjusting cylinder 6 drives the sliding block 10 to slide on the inner wall of the sliding groove, thereby driving the image capturer 209 and the pressure monitor 207 to move up and down, realizing shooting and monitoring at different height levels. During the operation of the image capturer 209 and the pressure monitor 207, the air pump 215 is started, and the air pump 215 introduces the gas filtered by the spherical filter 213 into the hollow sphere 201, and then discharges it through the exhaust hole 211. The discharged gas It drives the gas outside the image camera and the pressure monitor 207 to flow quickly, thereby preventing large-scale adhesion of dust in the mine tunnel to the outside of the image camera 209 and the pressure monitor 207. When falling objects occur, when small-volume falling objects pass through the two layers of protective nets 501, their impact is weakened. When they reach above the image camera 209 and the pressure monitor 207, their downward impact cannot cause any damage to them. When large-volume falling objects fall on the upper protective net 501, the protective net 501 is squeezed and sunken, and the spring rod 507 under the pressure-bearing fitting rod 505 is passively compressed. The elastic potential energy of the spring rod 507 when it is reset drives the upper protective net 501 to bounce off the large-volume falling objects, preventing them from accumulating on the protective net 501 and causing damage to the protective net 501.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A coal mine pressure monitoring device, comprising a mounting column (1) and a sleeve frame (8), characterized in that: The top of the sleeve frame (8) is provided with mounting rods (7) in an annular distribution, and a plurality of mounting rods (7) are provided with a protective assembly (5) on the outside, the protective assembly (5) comprising two protective nets (501), an inner ring frame (503) and an outer ring frame (502), and the inner ring frame (503) is fixedly connected to the outside of the plurality of mounting rods (7), the protective net (501) is fixedly connected to the outside of the inner ring frame (503) and the outer ring frame (502), and the plurality of mounting rods (7) are located on the outside between the inner ring frame (503) and the outer ring frame (502). A fixing rod (504) is fixedly connected, and the other end of each fixing rod (504) is fixedly connected to the outside of the outer ring frame (502), the top of the fixing rod (504) is fixedly connected to a support rod (508), and the top of the support rod (508) is fixedly connected to a push rod (506), both ends of the top of the push rod (506) are fixedly connected to spring rods (507), and the other ends of the two spring rods (507) are fixedly connected to pressure-bearing fitting rods (505), and the pressure-bearing fitting rods (505) are in contact with the protective net (501).

2. A coal mine pressure monitoring device according to claim 1, characterized in that: The outer side of the mounting column (1) is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a sliding block (10), the sliding block (10) is fixedly connected to the inner side of the sleeve frame (8), the outer side of the mounting column (1) located above the sliding groove is fixedly connected to a side block (4), the bottom of the side block (4) is fixedly connected to a cylinder (6), and the output end of the cylinder (6) is fixedly connected to the top of the sliding block (10).

3. A coal mine pressure monitoring device according to claim 2, characterized in that: The outer side of the sleeve frame (8) is fixedly connected to a connecting block (9), and the outer side of the connecting block (9) is provided with a monitoring component (2), which includes a first hollow sphere (201) and a second hollow sphere (203).

4. A coal mine pressure monitoring device according to claim 3, characterized in that: The hollow sphere (201) is fixedly connected to the outside of the connecting block (9), and exhaust holes (211) are opened at equal intervals on the outside of the hollow sphere (201). The inside of the hollow sphere (201) is fixedly connected to a pump frame (214), and the bottom of the pump frame (214) is fixedly connected to an air pump (215). The air delivery end of the air pump (215) is located inside the hollow sphere (201).

5. A coal mine pressure monitoring device according to claim 4, characterized in that: The interior of the second hollow sphere (203) is fixedly connected to a spherical filter (213), and the air inlet end of the air pump (215) is fixedly connected to an air inlet pipe (204), the other end of the air inlet pipe (204) is located in the spherical filter (213), and air inlet holes (202) are opened at equal distances on the outside of the second hollow sphere (203).

6. A coal mine pressure monitoring device according to claim 5, characterized in that: The outer sides of the hollow sphere 1 (201) and the hollow sphere 2 (203) are fixedly connected to a common connecting rod (212), and the outer side of the hollow sphere 1 (201) is fixedly connected to an annular electric guide rail (205), the inner side of the annular electric guide rail (205) is slidably connected to a rotating block (210), the outer side of the rotating block (210) is fixedly connected to a mounting block (208), and the outer side of the mounting block (208) is fixedly connected to an image capturer (209).

7. A coal mine pressure monitoring device according to claim 6, characterized in that: Two racks (206) are fixedly connected to the outer side of the annular electric guide rail (205), and pressure monitors (207) are fixedly connected to the outer walls of the two racks (206) on the same side. The two pressure monitors (207) are located at the upper and lower ends of the air inlet pipe (204).

8. The coal mine pressure monitoring device according to claim 7, characterized in that: A connecting assembly (3) is provided on the top of the installation column (1), and the connecting assembly (3) comprises a connecting frame (301), a telescopic plate (304) and an intermediate telescopic rod (305).

9. The coal mine pressure monitoring device according to claim 8, characterized in that: The connecting frame (301) is fixedly connected to the top of the mounting column (1), and the top of the connecting frame (301) is provided with embedding holes at equal distances, and a pile body (303) is inserted into the inside of each embedding hole. The telescopic plate (304) is connected to the outside of the connecting frame (301) through a hinge, and the outer sides of the two telescopic plates (304) located above are fixedly connected with embedding teeth (302) at equal distances. Both sides of the two telescopic plates (304) are fixedly connected with extension rods (306), and the end of the extension rod (306) away from the telescopic plate (304) is in the shape of a circular shaft. The outer side of each extension rod (306) is sleeved with a rotating ring (307), and the middle telescopic rod (305) is fixedly connected to the outer sides of the two extension rods (306) located on one side.

10. A method for using a coal mine pressure monitoring device, applied to the coal mine pressure monitoring device according to claim 9, characterized in that: The method of use comprises the following steps: S1: When installing the monitoring device, the pile body (303) is driven into the top of the mine tunnel, and then the telescopic plate (304) is pulled to stretch the telescopic plate (304) to its maximum length, and the telescopic plate is attached to the wall of the mine tunnel, and the embedded teeth (302) are nailed into the wall; S2: During the use of the monitoring equipment, the regulating cylinder (6) drives the sliding block (10) to slide on the inner wall of the sliding groove, thereby driving the image capture device (209) and the pressure monitor (207) to move up and down, realizing shooting and monitoring at different height levels. During the operation of the image capture device (209) and the pressure monitor (207), the air pump (215) is started. The air pump (215) introduces the gas filtered by the spherical filter (213) into the hollow sphere (201), and then discharges it through the exhaust hole (211). The discharged gas drives the gas outside the image capture device and the pressure monitor (207) to flow quickly, thereby preventing the dust in the mine from adhering to the outside of the image capture device (209) and the pressure monitor (207) over a large area; S3: When a falling object occurs, when a small falling object passes through the two layers of protective nets (501), its impact is weakened. When it reaches above the image capture device (209) and the pressure monitor (207), its downward impact cannot cause any damage to them. When a large falling object falls on the upper protective net (501), the protective net (501) is squeezed and sunken, and the spring rod (507) below the pressure-bearing fitting rod (505) is passively compressed. The elastic potential energy of the reset of the spring rod (507) drives the upper protective net (501) to bounce off the large falling object.

Images