A monitoring method and device for coal mine safety production

Abstract

The application relates to the technical field of coal mine safety equipment, and discloses a monitoring device for coal mine safety production, which comprises an outer protective cover, an inner protective cover, a camera, a frame body and a plurality of mine-used gas sensors, a circular plate is sleeved in the frame body, the lower end of the circular plate is fixedly connected with the edge of the outer protective cover through bolts, a window is arranged on one side of the outer protective cover, an annular plate is fixedly connected to the inner side of the outer protective cover, the inner protective cover is sleeved in the annular plate and forms a cavity with the outer protective cover, a gas distribution mechanism is arranged in the cavity, the gas distribution mechanism is composed of a first elbow pipe, a second elbow pipe, a bent plate and a third elbow pipe, the gas distribution mechanism divides the cavity into a plurality of chambers, and the surface of the inner protective cover is cleaned when airflow flows in the plurality of chambers. The monitoring method and device for coal mine safety production can make the monitoring equipment work efficiently to obtain pictures of a mining site, can realize automatic cleaning work, can also cyclically detect the air quality and abnormal vibration under the well.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety equipment technology, specifically to a monitoring method and device for coal mine safety production. Background Technology

[0002] Coal mine safety is greatly affected by natural conditions. Geological structure and coal seam occurrence conditions necessitate different development and mining methods, which also bring many natural disasters, such as gas explosions, coal dust explosions, mine fires, roof collapses, and mine water inrushes. These inherent hazards in coal mines become potential factors for accidents. Furthermore, coal production systems are complex, workplaces are dark and cramped, and personnel are concentrated. New situations and problems constantly arise at the mining face as geological conditions change. Despite the rapid development of technology and the continuous improvement of coal mine mechanization, the high incidence of accidents has not been avoided. Therefore, safety monitoring systems are installed at underground mining sites. These systems mainly monitor equipment operation status and non-standard personnel behavior through cameras, and also monitor the underground environment in real time through the installation of mine gas sensors to prevent accidents.

[0003] Currently, most traditional monitoring devices are split-type, especially camera equipment, which is easily contaminated by coal dust underground, affecting the quality of the monitoring images. In addition, the air circulation underground is poor, resulting in lower accuracy in detecting gas. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a monitoring method and device for coal mine safety production. It has the advantages of enabling monitoring equipment to efficiently acquire images of the mining site, achieving automatic cleaning, and continuously detecting underground air quality and abnormal vibrations. It solves the problems that monitoring devices are easily contaminated by coal dust underground, affecting the quality of monitoring images, and that poor air circulation underground results in low accuracy of gas detection.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a monitoring device for coal mine safety production, comprising an outer protective cover, an inner protective cover, a camera, a frame, and multiple mine gas sensors. A circular plate is fitted inside the frame. The edge of the outer protective cover is fixedly connected to the lower end of the circular plate by bolts. A window is provided on one side of the outer protective cover. An annular plate is fixedly connected to the inner side of the outer protective cover. The inner protective cover is fitted inside the annular plate and forms a cavity with the outer protective cover. A gas distribution mechanism is provided inside the cavity.

[0008] The gas distribution mechanism consists of a first bend, a second bend, a bend plate, and a third bend. The gas distribution mechanism divides the cavity into multiple chambers, so that the airflow cleans the surface of the inner cover when it flows in multiple chambers. At the same time, multiple mine gas sensors are set in the airflow path to monitor the concentration of gas.

[0009] A crossbar is fixedly connected inside the frame. The center of the crossbar is rotatably connected to a circular plate via a rotating assembly. A sealing plate is fixedly connected to the upper end of the inner cover. The camera is fixed to the lower end of the sealing plate. The upper end of the sealing plate is connected to the rotating assembly.

[0010] A gear ring is fixedly connected to the edge of the inner protective cover, and a first gear meshes with one side of the gear ring. A first motor is fixedly connected to the upper end of the circular plate, and the output end of the first motor is fixedly connected to the upper end of the first gear.

[0011] Preferably, the air distribution mechanism includes an air collecting hood, which is fixed at the lower center of the outer cover. The first bend, the second bend, the bend plate, and the third bend are axially arranged on the side wall of the air collecting hood. One end of the first bend and the third bend are connected to the air collecting hood. The side wall of the first bend is provided with an opening, and a roller brush is vertically arranged at the opening. One side of the roller brush is in contact with the side wall of the inner cover. A rotating shaft is fixedly connected to the center of the roller brush. The shaft wall of the rotating shaft is rotatably connected to the first bend through a ball bearing. The upper end of the roller brush passes through an annular plate and is fixedly connected to a second gear, which meshes with a gear ring.

[0012] A riser is provided on one side of the annular plate, and a cleaning assembly is provided on the wall of the riser. A plurality of water spray heads that work with the cleaning assembly are provided on one side of the second bend. A squeegee assembly is provided between the second bend and the bend plate.

[0013] An exhaust fan is fixedly connected inside the air collecting hood, a flow guide is fixedly connected to one side of the air collecting hood, a water inlet communicating with the cavity is opened on one side of the flow guide, and multiple water passages are opened on one side of the air collecting hood.

[0014] Preferably, the cleaning assembly includes a sponge sleeve fixed to the wall of the riser. The riser is rotatably connected to the side wall of the annular plate via a rolling bearing. The upper end of the riser passes through the rolling bearing and is fixedly connected to a toothed ring, which meshes with a gear ring. The riser wall has multiple evenly distributed air inlets. A water inlet pipe is fixedly connected to the wall of the second bend. One side of the outer cover is fixedly connected to the wall of the water inlet pipe via a mounting hole.

[0015] Preferably, the wiper assembly includes two reciprocating screws, the walls of which are rotatably connected to one side of an annular plate via needle roller bearings. The lower ends of the reciprocating screws are rotatably connected to the bottom inner wall of the outer cover via needle roller bearings. An arc-shaped wiper blade is provided on one side of the inner cover. Two sliding sleeves are fixedly connected to the side wall of the wiper blade. The two sliding sleeves are respectively sleeved on the walls of the two reciprocating screws. The upper ends of the reciprocating screws pass through needle roller bearings and are fixedly connected to a third gear, which meshes with a gear ring.

[0016] Preferably, an air inlet is provided on the wall of the third bend, and an air inlet channel is provided on the side wall of the annular plate. The air inlet channel is located in the area between the third bend and the bend plate, and multiple mine gas sensors are symmetrically fixed on the wall of the first bend.

[0017] Preferably, the rotating assembly includes a main shaft, the shaft wall of which is rotatably connected to the wall of a crossbar via a needle roller bearing; a circular plate is coaxially fixed to the shaft wall of the main shaft; the upper end of a sealing plate is fixedly connected to the lower end of the main shaft; the side wall of the circular plate is rotatably connected to the side wall of the main shaft via a sealing bearing; a second motor is fixedly connected to the wall of the crossbar; a worm gear is fixedly connected to the output end of the second motor; a worm wheel meshes with the wall of the worm gear; and the worm wheel is fixed to the shaft wall of the main shaft.

[0018] Preferably, an end cap is fixedly connected to the upper end of the frame, and two rectangular openings are provided at the upper end of the end cap. A gantry frame is fitted into the two rectangular openings. Two vertical parts of the gantry frame pass through the rectangular openings and are fixedly connected to two springs. The upper ends of the two springs are fixedly connected to the lower end of the end cap. A vibration sensor is fixedly connected to one side of the vertical part of the gantry frame through a fixing plate. The vibration sensor is fixed to the upper end of the end cap.

[0019] Preferably, a limiting ring is provided at the upper end of the circular plate, the limiting ring is fixed to the inner side of the frame, and a rotating shaft is fixedly connected at the lower center of the inner cover. The rotating shaft is rotatably connected to the upper end of the air collecting cover through a rolling bearing.

[0020] This technical solution also provides a method for monitoring coal mine safety production, including the following steps:

[0021] Step 1: Install the monitoring device underground using a gantry crane, and connect the camera, vibration sensor, and mine gas sensor as required;

[0022] Step 2: Check the power supply status of each execution unit, connect the water source with a hose and supply water to multiple spray heads with a mini water pump;

[0023] Step 3: After powering on, check the camera's shooting angle and adjust the camera's shooting angle by starting the second motor to drive the transmission rotation component.

[0024] Step 4: Turn on the power of the exhaust fan and observe the exhaust situation at the air collection hood. When the airflow is flowing, check the data of gas content monitored by multiple mine gas sensors through the terminal device.

[0025] Step 5: Use vibration sensors to collect vibration data in the mine, analyze the data collected by the vibration sensors to issue early warnings for abnormal vibrations, and issue warnings through buzzers.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides a monitoring device for coal mine safety production, which has the following beneficial effects:

[0028] 1. The camera can be sealed by the outer and inner protective covers. Since a lot of dust is generated during coal mining, a small window is opened on the outer cover. The area between the window, the first bend, and the third bend is the video acquisition area. All other areas on the inner cover are sealed areas, which reduces the area of ​​the inner cover that gets dusty. When cleaning, it is not necessary to tilt all sides of the inner cover. Only some areas need to be cleaned, which reduces the difficulty of cleaning. Moreover, the second bend and the bend plate divide the sealed area into a washing area, a squeegee area, a drying area, and a shooting area in a counterclockwise direction. This allows for zoned cleaning of the inner cover without scratching the surface of the inner cover and affecting the clarity of the camera image.

[0029] 2. When the airflow passes through the gas distribution mechanism, multiple mine gas sensors are set in the airflow path to monitor the gas concentration. At the same time, the airflow can discharge the cleaned dust to prevent dust from accumulating directly in the cavity. In addition, the gas distribution mechanism can also discharge air from the drying area and accelerate the drying of the inner protective cover surface after wiping water.

[0030] 3. Use brackets or other support components to connect to the gantry. Since the gantry and the end cover are connected by springs, elastic deformation will occur between them when vibration occurs. Vibration sensors are installed between the gantry and the end cover. When vibration force is generated, the data collected by the vibration sensors will change. Therefore, the back-end terminal can selectively issue early warnings based on the magnitude of the vibration force, which is conducive to the mine personnel taking quick countermeasures.

[0031] 4. By starting the second motor, the worm gear is driven to rotate. When the worm gear rotates, it drives the main shaft to rotate the circular plate, inner cover, outer cover and camera synchronously. This allows for rapid adjustment of the camera's shooting angle, ensuring that the window is always aligned with the camera's lens assembly. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a monitoring device for coal mine safety production proposed in this invention;

[0033] Figure 2 The present invention provides a monitoring device for coal mine safety production. Figure 1 Cross-section Figure 1 ;

[0034] Figure 3 This is a schematic diagram of the outer protective cover and gas distribution mechanism in a monitoring device for coal mine safety production proposed in this invention;

[0035] Figure 4 This is a schematic diagram of the structure of the outer protective cover in a monitoring device for coal mine safety production proposed in this invention;

[0036] Figure 5 This is a schematic diagram of the inner protective cover and camera in a monitoring device for coal mine safety production proposed in this invention;

[0037] Figure 6 This is a cross-sectional view of the outer protective cover and gas distribution mechanism in a monitoring device for coal mine safety production proposed in this invention;

[0038] Figure 7 The present invention provides a monitoring device for coal mine safety production. Figure 1 Cross-section Figure 2 ;

[0039] Figure 8 This is a schematic diagram of the gas distribution mechanism in a monitoring device for coal mine safety production proposed in this invention;

[0040] Figure 9 This is a schematic diagram of the air collecting hood and the air guiding hood in a monitoring device for coal mine safety production proposed in this invention;

[0041] Figure 10 This is a schematic diagram of the structure of the first bend in a monitoring device for coal mine safety production proposed in this invention;

[0042] Figure 11 This is a schematic diagram of the third bend in a monitoring device for coal mine safety production proposed in this invention.

[0043] Figure 12 This is a schematic diagram of the structure of the scraper and reciprocating screw in a monitoring device for coal mine safety production proposed in this invention;

[0044] Figure 13 This is a cross-sectional view of the sponge sleeve and riser in a monitoring device for coal mine safety production proposed in this invention.

[0045] In the diagram: 1. Outer protective cover; 2. First bend; 3. Inner protective cover; 4. Crossbar; 5. Third bend; 6. Window; 7. Frame; 8. End cap; 9. Gantry frame; 10. Vibration sensor; 11. Spring; 12. Circular plate; 13. Second motor; 14. Worm gear; 15. Worm wheel; 16. Main shaft; 17. Mine gas sensor; 18. First gear; 19. First motor; 20. Annular plate; 21. Third... 21. Gear; 22. Second bend pipe; 23. Gear ring; 24. Sponge sleeve; 25. Gear ring; 26. Second gear; 27. Spray head; 28. Riser pipe; 29. ​​Air collector cover; 30. Exhaust fan; 31. Bend plate; 32. Air intake channel; 33. Camera; 34. Sealing plate; 35. Air inlet; 36. Water inlet; 37. Flow guide cover; 38. Roller brush; 39. Sliding sleeve; 40. Reciprocating lead screw; 41. Squeegee. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1:

[0048] See attached document Figure 1-13 A monitoring device for coal mine safety production includes an outer protective cover 1, an inner protective cover 3, a camera 33, a frame 7, and multiple mine gas sensors 17. An end cap 8 is fixedly connected to the upper end of the frame 7. Two rectangular openings are opened at the upper end of the end cap 8. A gantry frame 9 is fitted into the two rectangular openings. Two vertical parts of the gantry frame 9 pass through the rectangular openings and are fixedly connected to two springs 11. The upper ends of the two springs 11 are fixedly connected to the lower end of the end cap 8. A vibration sensor 10 is fixedly connected to one side of the vertical part of the gantry frame 9 through a fixing plate. The vibration sensor 10 is fixed to the upper end of the end cap 8. A circular plate 12 is fitted inside the frame 7. The edge of the outer protective cover 1 is fixedly connected to the lower end of the circular plate 12 through bolts. A window 6 is opened on one side of the outer protective cover 1. An annular plate 20 is fixedly connected to the inner side of the outer protective cover 1. The inner protective cover 3 is fitted into the annular plate 20 and forms a cavity with the outer protective cover 1. A gas distribution mechanism is provided in the cavity.

[0049] The gas distribution mechanism consists of a first bend 2, a second bend 22, a bend plate 31, and a third bend 5. An air inlet 35 is provided on the wall of the third bend 5, and an air inlet channel 32 is provided on the side wall of the annular plate 20. The air inlet channel 32 is located in the area between the third bend 5 and the bend plate 31. Multiple mine gas sensors 17 are symmetrically fixed on the wall of the first bend 2. The gas distribution mechanism divides the cavity into multiple chambers, so that the airflow cleans the surface of the inner cover 3 when it flows in multiple chambers. At the same time, multiple mine gas sensors 17 are set in the airflow path to monitor the concentration of gas.

[0050] A crossbar 4 is fixedly connected inside the frame 7. The center of the crossbar 4 is rotatably connected to a circular plate 12 via a rotating assembly. The rotating assembly includes a main shaft 16, whose shaft wall is rotatably connected to the wall of the crossbar 4 via a needle roller bearing. The circular plate 12 is coaxially fixed to the shaft wall of the main shaft 16. The upper end of the sealing plate 34 is fixedly connected to the lower end of the main shaft 16, and the side wall of the circular plate 12 is rotatably connected to the side wall of the main shaft 16 via a sealing bearing. A second motor 13 is fixedly connected to the wall of the crossbar 4, and the output end of the second motor 13 is fixedly connected to the crossbar 4. A worm gear 14 is fixedly connected, and a worm wheel 15 meshes on the wall of the worm gear 14. The worm wheel 15 is fixed on the shaft wall of the main shaft 16. A sealing plate 34 is fixedly connected to the upper end of the inner cover 3. A camera 33 is fixed to the lower end of the sealing plate 34. The upper end of the sealing plate 34 is connected to the rotating assembly. A gear ring 25 is fixedly connected to the edge of the inner cover 3. A first gear 18 meshes on one side of the gear ring 25. A first motor 19 is fixedly connected to the upper end of the circular plate 12. The output end of the first motor 19 is fixedly connected to the upper end of the first gear 18.

[0051] When in use, this invention has multiple monitoring functions, specifically:

[0052] 1. It possesses clear video surveillance capabilities. The camera 33 can be sealed using an outer protective cover 1 and an inner protective cover 3. Since coal mining generates a significant amount of dust, a small window 6 is provided on the outer protective cover 1. Figure 1 and Figure 2 As shown, the area between window 6, the first bend 2, and the third bend 5 is the video capture area. Other areas on the inner cover 3 are sealed areas, which reduces the area of ​​dust accumulation on the inner cover 3. During cleaning, it is not necessary to tilt all sides of the inner cover 3; only some areas need to be cleaned, reducing the difficulty of cleaning. Furthermore, the second bend 22 and the bend plate 31 divide the sealed area counterclockwise into a washing area, a wiping area, a drying area, and a shooting area. This allows for zoned cleaning of the inner cover 3, preventing scratches on the surface of the inner cover 3 that could affect the clarity of the image from the camera 33.

[0053] Second, it has the function of monitoring the underground gas content through ventilation circulation. When the airflow passes through the gas distribution mechanism, multiple mine gas sensors 17 are set in the airflow path to monitor the gas concentration. At the same time, the airflow can discharge the dust that has been cleaned, preventing the dust from accumulating directly in the cavity. In addition, the gas distribution mechanism can also discharge the air in the drying area and accelerate the drying of the inner protective cover 3 surface after scraping water.

[0054] Third, it is capable of monitoring abnormal vibrations in the mine. It is connected to the gantry 9 using brackets or other support components. Since the gantry 9 and the end cover 8 are connected by springs 11, elastic deformation will occur between them during vibration. A vibration sensor 10 is installed between the gantry 9 and the end cover 8. When vibration force is generated, the data collected by the vibration sensor 10 will change. Therefore, the back-end terminal can selectively issue early warnings based on the magnitude of the vibration force, which is conducive to the mine personnel taking quick countermeasures.

[0055] Fourth, the image acquisition angle can be adjusted according to the needs. When adjusting, the second motor 13 is started to drive the worm gear 14 to rotate the worm wheel 15. When the worm wheel 15 rotates, it drives the main shaft 16 to rotate the circular plate 12, the inner protective cover 3, the outer protective cover 1 and the camera 33 synchronously. In this way, the shooting angle of the camera 33 can be quickly adjusted so that the window 6 is always aligned with the lens assembly of the camera 33.

[0056] Example 2: The difference from Example 1 is that;

[0057] See attached document Figure 3-13 The air distribution mechanism includes an air collecting hood 29, which is fixed at the lower center of the outer cover 1. The first bend 2, the second bend 22, the bend plate 31 and the third bend 5 are axially arranged on the side wall of the air collecting hood 29. One end of the first bend 2 and the third bend 5 are connected to the air collecting hood 29. The side wall of the first bend 2 is provided with an opening, and a roller brush 38 is vertically arranged at the opening. One side of the roller brush 38 is in contact with the side wall of the inner cover 3. A rotating shaft is fixedly connected to the center of the roller brush 38. The shaft wall of the rotating shaft is rotatably connected to the first bend 2 through a ball bearing. The upper end of the roller brush 38 passes through the annular plate 20 and is fixedly connected to a second gear 26. The second gear 26 meshes with the gear ring 25.

[0058] A riser 28 is provided on one side of the annular plate 20. A cleaning assembly is provided on the wall of the riser 28. The cleaning assembly includes a sponge sleeve 24, which is fixed to the wall of the riser 28. The riser 28 is rotatably connected to the side wall of the annular plate 20 via a rolling bearing. The upper end of the riser 28 passes through the rolling bearing and is fixedly connected to a toothed ring 23, which meshes with a toothed ring 25. Multiple evenly distributed air inlets are provided on the wall of the riser 28. A water inlet pipe is fixedly connected to the wall of the second bend 22. One side of the outer cover 1 is fixedly connected to the wall of the water inlet pipe through a mounting hole. Multiple spray heads 27 for use with the cleaning assembly are provided on one side of the second bend 22. A squeegee assembly is provided between the second bend 22 and the bend plate 31. The squeegee assembly includes two reciprocating screws 40, the walls of which are rotatably connected to one side of the annular plate 20 via needle roller bearings. The lower end of the reciprocating screw 40 is rotatably connected to the bottom inner wall of the outer cover 1 via a needle roller bearing. An arc-shaped scraper 41 is provided on one side of the inner cover 3. Two sliding sleeves 39 are fixedly connected to the side wall of the scraper 41. The two sliding sleeves 39 are respectively sleeved on the rod walls of the two reciprocating screws 40. The upper end of the reciprocating screw 40 passes through the needle roller bearing and is fixedly connected to a third gear 21. The third gear 21 meshes with the gear ring 25. An exhaust fan 30 is fixedly connected inside the air collecting hood 29. A guide hood 37 is fixedly connected to one side of the air collecting hood 29. A water inlet 36 communicating with the cavity is opened on one side of the guide hood 37. Multiple water passages are opened on one side of the air collecting hood 29. A limit ring is provided at the upper end of the circular plate 12. The limit ring is fixed inside the frame 7. A rotating shaft is fixedly connected at the center of the lower end of the inner cover 3. The rotating shaft is rotatably connected to the upper end of the air collecting hood 29 via a rolling bearing.

[0059] The air distribution mechanism of this invention can first draw three airflows into the air collection hood 29 and discharge them when the exhaust fan 30 is working. The first airflow is the air that enters from both sides of the roller brush 38 on the first bend pipe 2. This airflow directly enters the first bend pipe 2 and is discharged by the exhaust fan 30. This airflow can carry the dry dust washed off by the roller brush 38.

[0060] The second airflow utilizes the airflow generated inside the air collection hood 29 when the exhaust fan 30 is working. When the airflow flows rapidly, it will generate negative pressure in the water passage. The negative pressure suction can pass through the guide hood 37 and adsorb the cleaning sewage in the cavity from the water inlet 36, accelerating the drainage efficiency and preventing water accumulation in the cavity.

[0061] The third airflow also utilizes the negative pressure generated by the exhaust fan 30 within the air collection hood 29 to draw air from the third bend pipe 5. At this time, the air in the washing area passes through the sponge sleeve 24 and the air inlet and enters the riser pipe 28. It is then directly discharged above the annular plate 20 through the riser pipe 28. Finally, the air passes through the air intake channel 32 and enters from the air inlet 35 on one side of the third bend pipe 5. The air discharged to the drying area is filtered by the moistened sponge sleeve 24 during its flow, thus preventing dust in the air from contaminating the cleaned inner cover 3.

[0062] When the inner cover 3 is cleaned on a timed basis, the first motor 19 is started, driving the first gear 18 to rotate. The first gear 18 drives the gear ring 25 to rotate the inner cover 3. When the inner cover 3 rotates, it is in an idle state, that is, it makes a circular motion around the rotation axis of the main shaft 16 and the upper end of the air collecting cover 29. In this way, the area on the side of the inner cover 3 can be changed. When the inner cover 3 rotates, the gear ring 25 drives the second gear 26 to rotate the rotating shaft and the roller brush 38, which can brush the dust on the side of the moving inner cover 3. The brushed dust is discharged by the first airflow. When the gear ring 25 rotates, it drives the gear ring 23 to rotate the riser 28. When the first motor 28 rotates, it drives the sponge sleeve 24 to rotate and brush the surface of the inner cover 3. At the same time, the water spray head 27 sprays water to rinse the surface of the inner cover 3 and remove dust. At this time, the sewage is accelerated and discharged by the second airflow. Finally, when the gear ring 25 rotates, it drives the third gear 21 to rotate the reciprocating screw 40. The rotation of the reciprocating screw 40 drives the sliding sleeve 39 to move the wiper 41 back and forth. At this time, the reciprocating wiper 41 can effectively remove water droplets from the surface of the inner cover 3. When the first motor 19 stops working, only the drying area is dried by the exhaust fan 30 to ensure that the surface of the inner cover 3 entering the shooting area is dry.

[0063] Example 3:

[0064] This invention also provides a method for monitoring coal mine safety production, the specific steps of which are as follows:

[0065] 1. Install the monitoring device in the well via the gantry 9, and connect the camera 33, vibration sensor 10 and mine gas sensor 17 as required. Check the power supply status of each execution unit. Connect the water source with a hose and supply water to multiple water nozzles 27 with a micro water pump (not shown in the figure). After the water sprayed from the water nozzles 27 cleans the surface of the inner protective cover 3, the water is drawn out from the inlet 36 by the negative pressure suction in the air collecting cover 29 and passes through the guide cover 37. In this way, water will not accumulate in the cavity.

[0066] 2. After powering on, check the shooting angle of camera 33. When adjustment is needed, start the second motor 13 to drive the worm gear 14 to rotate the worm wheel 15. When the worm wheel 15 rotates, it drives the main shaft 16 to rotate the circular plate 12, inner cover 3, outer cover 1 and camera 33 synchronously. In this way, the shooting angle of camera 33 can be quickly adjusted so that window 6 is always aligned with the lens assembly of camera 33. Thus, the shooting angle of camera 33 can be adjusted by starting the second motor 13 to drive the transmission rotation assembly.

[0067] 3. Turn on the power of the exhaust fan 30 and observe the exhaust situation at the air collection hood 29. The air entering from both sides of the roller brush 38 on the first bend pipe 2 is directly discharged by the exhaust fan 30 into the first bend pipe 2. This airflow can carry the dry dust washed off by the roller brush 38. In addition, the mine gas sensor 17 is set on both sides of the first bend pipe 2. Therefore, when the airflow is flowing, the data of gas content monitored by multiple mine gas sensors 17 can be viewed through the terminal device.

[0068] 4. The gantry 9 and the end cover 8 are connected by a spring 11. Therefore, during vibration, elastic deformation will occur between the two. A vibration sensor 10 is installed between the gantry 9 and the end cover 8. When vibration force is generated, the data collected by the vibration sensor 10 will change. Therefore, the back-end terminal can selectively issue early warnings based on the magnitude of the vibration force, which is conducive to the mine personnel to take quick countermeasures. In this way, the vibration sensor 10 can be used to collect the vibration situation in the mine, and the abnormal vibration can be warned by analyzing the data collected by the vibration sensor 10 and issuing a warning through a buzzer.

[0069] The above monitoring data transmission and alarm issuance are all implemented using existing mature technologies, which are already known to those skilled in the art, so no further details will be provided.

[0070] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A monitoring device for coal mine safety production, comprising an outer protective cover (1), an inner protective cover (3), a camera (33), a frame (7), and multiple mine gas sensors (17), characterized in that: A circular plate (12) is fitted inside the frame (7). The edge of the outer cover (1) is fixedly connected to the lower end of the circular plate (12) by bolts. A window (6) is opened on one side of the outer cover (1). An annular plate (20) is fixedly connected to the inner side of the outer cover (1). The inner cover (3) is fitted inside the annular plate (20) and forms a cavity with the outer cover (1). An air distribution mechanism is provided in the cavity. The gas distribution mechanism consists of a first bend (2), a second bend (22), a bend plate (31), and a third bend (5). The gas distribution mechanism divides the cavity into multiple chambers, so that the surface of the inner cover (3) is cleaned when the airflow flows in multiple chambers. At the same time, multiple mine gas sensors (17) are set in the airflow passage to monitor the concentration of gas. The air distribution mechanism includes an air collecting hood (29), which is fixed at the lower center of the outer cover (1). The first bend (2), the second bend (22), the bend plate (31), and the third bend (5) are axially arranged on the side wall of the air collecting hood (29). One end of the first bend (2) and the third bend (5) are connected to the air collecting hood (29). The side wall of the first bend (2) is provided with an opening, and a roller brush (38) is vertically arranged at the opening. One side of the roller brush (38) is in contact with the side wall of the inner cover (3). A rotating shaft is fixedly connected at the center of the roller brush (38). The shaft wall of the rotating shaft is rotatably connected to the first bend (2) through a ball bearing. The upper end of the roller brush (38) passes through the annular plate (20) and is fixedly connected to a second gear (26). The second gear (26) meshes with the gear ring (25). A riser (28) is provided on one side of the annular plate (20). A cleaning assembly is provided on the wall of the riser (28). The cleaning assembly includes a sponge sleeve (24). The sponge sleeve (24) is fixed on the wall of the riser (28). The riser (28) is rotatably connected to the side wall of the annular plate (20) through a rolling bearing. The upper end of the riser (28) passes through the rolling bearing and is fixedly connected to a toothed ring (23). The toothed ring (23) meshes with a toothed ring (25). Multiple evenly distributed air inlets are provided on the wall of the riser (28). A water inlet pipe is fixedly connected to the wall of the second bend (22). One side of the outer cover (1) is fixedly connected to the wall of the water inlet pipe through an installation hole. A plurality of spray nozzles (27) for use with the cleaning assembly are provided on one side of the second bend (22). A squeegee assembly is provided between the second bend (22) and the bend plate (31). The squeegee assembly includes two reciprocating screws (40). The walls of the two reciprocating screws (40) are rotatably connected to one side of the annular plate (20) through needle roller bearings. The lower end of the reciprocating screws (40) is rotatably connected to the bottom inner wall of the outer cover (1) through needle roller bearings. A squeegee (41) with an arc structure is provided on one side of the inner cover (3). Two sliding sleeves (39) are fixedly connected to the side wall of the squeegee (41). The two sliding sleeves (39) are respectively sleeved on the walls of the two reciprocating screws (40). The upper end of the reciprocating screws (40) passes through the needle roller bearings and is fixedly connected to a third gear (21). The third gear (21) meshes with the gear ring (25). An exhaust fan (30) is fixedly connected inside the air collecting hood (29). A flow guide hood (37) is fixedly connected to one side of the air collecting hood (29). A water inlet (36) communicating with the cavity is opened on one side of the flow guide hood (37). Multiple water passages are opened on one side of the air collecting hood (29). A crossbar (4) is fixedly connected inside the frame (7). The center of the crossbar (4) is rotatably connected to the circular plate (12) through a rotating component. A sealing plate (34) is fixedly connected to the upper end of the inner cover (3). The camera (33) is fixed to the lower end of the sealing plate (34). The upper end of the sealing plate (34) is connected to the rotating component. A gear ring (25) is fixedly connected to the edge of the inner cover (3), and a first gear (18) meshes with one side of the gear ring (25). A first motor (19) is fixedly connected to the upper end of the circular plate (12), and the output end of the first motor (19) is fixedly connected to the upper end of the first gear (18).

2. The monitoring device for coal mine safety production according to claim 1, characterized in that: An air inlet (35) is provided on the wall of the third bend (5), and an air inlet channel (32) is provided on the side wall of the annular plate (20). The air inlet channel (32) is located in the area between the third bend (5) and the bend plate (31). Multiple mine gas sensors (17) are symmetrically fixed on the wall of the first bend (2).

3. The monitoring device for coal mine safety production according to claim 1, characterized in that: The rotating assembly includes a main shaft (16), the shaft wall of the main shaft (16) is rotatably connected to the wall of the crossbar (4) by a needle roller bearing, the circular plate (12) is coaxially fixed to the shaft wall of the main shaft (16), the upper end of the sealing plate (34) is fixedly connected to the lower end of the main shaft (16), the side wall of the circular plate (12) is rotatably connected to the side wall of the main shaft (16) by a sealing bearing, a second motor (13) is fixedly connected to the wall of the crossbar (4), the output end of the second motor (13) is fixedly connected to a worm (14), a worm wheel (15) meshes on the wall of the worm (14), and the worm wheel (15) is fixed to the shaft wall of the main shaft (16).

4. A monitoring device for coal mine safety production according to claim 1, characterized in that: An end cap (8) is fixedly connected to the upper end of the frame (7). Two rectangular openings are opened at the upper end of the end cap (8). A gantry frame (9) is fitted into the two rectangular openings. Two vertical parts of the gantry frame (9) pass through the rectangular openings and are fixedly connected to two springs (11). The upper ends of the two springs (11) are fixedly connected to the lower end of the end cap (8). A vibration sensor (10) is fixedly connected to one side of the vertical part of the gantry frame (9) through a fixing plate. The vibration sensor (10) is fixed to the upper end of the end cap (8).

5. A monitoring device for coal mine safety production according to claim 1, characterized in that: The upper end of the circular plate (12) is provided with a limiting ring, which is fixed to the inner side of the frame (7). A rotating shaft is fixedly connected to the lower center of the inner cover (3), and the rotating shaft is rotatably connected to the upper end of the air collecting cover (29) through a rolling bearing.

6. A monitoring method using the coal mine safety production monitoring device according to any one of claims 1-5, characterized in that: Includes the following steps: Step 1: Install the monitoring device in the well via the gantry (9), and connect the camera (33), vibration sensor (10) and mine gas sensor (17) as required. Step 2: Power on and check the power supply status of each execution unit. Connect the water source with a hose and supply water to multiple spray heads (27) with a miniature water pump. Step 3: After powering on, check the shooting angle of the camera (33) and adjust the shooting angle of the camera (33) by starting the second motor (13) to drive the transmission rotation assembly. Step 4: Turn on the power of the exhaust fan (30), observe the exhaust situation at the air collection hood (29), and when the airflow is flowing, view the data of gas content monitored by multiple mine gas sensors (17) through the terminal device; Step 5: Use vibration sensor (10) to collect vibration data in the mine, analyze the data collected by vibration sensor (10) to issue early warning for abnormal vibration, and issue a warning through a buzzer.

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