Coal mine underground dust concentration monitoring device

Abstract

The utility model relates to the technical field of coal mine dust concentration monitoring, in particular to an underground coal mine dust concentration monitoring device which comprises a supporting block and a moving assembly, two ends of the supporting block are respectively connected with two mounting seats in an inserted mode, a plurality of inserting holes are formed in the outer wall of the supporting block, a T-shaped block is fixedly arranged on the supporting block, and a rack is embedded in the T-shaped block. A plurality of driving assemblies are connected to the supporting block in a sliding mode, each driving assembly comprises a moving box, the moving boxes are connected with the T-shaped blocks in a sliding mode, gears are rotationally connected into the moving boxes, the gears are connected with the racks in an engaged mode, electric push rods are installed on the moving boxes, and the multiple moving assemblies comprise moving blocks. Multi-point arrangement of the PM2.5 sensor module and the oxygen sensor module in the length direction of the supporting block is achieved, dynamic adjustment is conveniently conducted according to a dust diffusion path or an oxygen concentration abnormal area, the monitoring coverage range is widened, the monitoring requirements of underground roadway variable sections and different height areas are met, and a more reliable basis is provided for underground environment safety assessment.

Description

Technical Field

[0001] This utility model relates to the field of coal mine dust concentration monitoring technology, and in particular to a coal mine underground dust concentration monitoring device. Background Technology

[0002] In the complex environment of underground coal mines, dust concentration and oxygen content are core monitoring indicators to ensure safe production. Excessive dust concentration not only threatens the respiratory health of miners, but may also cause dust explosion accidents due to static electricity accumulation or sparks. Abnormal oxygen content is directly related to personnel safety and equipment operation stability. Therefore, accurately capturing real-time environmental data in different areas and at different heights is a key link in coal mine safety monitoring.

[0003] A search revealed a Chinese patent with publication number CN220667645U, which provides an electronic monitoring device for safety in coal mines. This device integrates multiple sensors such as methane, carbon monoxide, and dust, but its sensor modules are fixed inside a centralized monitoring chamber and rely on a blower to passively collect gas samples.

[0004] However, during use, it was found that the sensor position of the device is relatively fixed, making it difficult to dynamically adjust the monitoring points according to the dust diffusion. It is easy to miss high concentration areas. The cross-section of underground roadways is varied, and the fixed-installation sensors are difficult to match the monitoring needs at different heights. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dust concentration monitoring device for underground coal mines. It realizes the multi-point arrangement of PM2.5 sensor modules and oxygen sensor modules along the length of the support block, which facilitates dynamic adjustment according to the dust diffusion path or areas with abnormal oxygen concentration, improves the monitoring coverage, and adapts to the monitoring needs of underground roadways with varying cross-sections and different heights, providing a more reliable basis for underground environmental safety assessment.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a coal mine underground dust concentration monitoring device, including a support block and a moving component. Two mounting seats are respectively inserted into both ends of the support block. Multiple insertion holes are opened on the outer wall of the support block. A T-shaped block is fixed on the support block. A rack is embedded in the T-shaped block. Multiple driving components are slidably connected to the support block.

[0007] The drive assembly includes a movable box that is slidably connected to a T-shaped block. A gear is rotatably connected inside the movable box, and the gear meshes with a rack. An electric push rod is mounted on the movable box.

[0008] The moving component is provided in multiple ways. The moving component includes a moving block. Two locking blocks are fixed on the moving block. The two locking blocks are respectively engaged with the two end side walls of the support block. A plug rod is inserted into the moving block. The plug rod is engaged with the plug hole. A PM2.5 sensor module and an oxygen sensor module are respectively installed on the moving block.

[0009] Preferably, the mounting base has a slot, and the two ends of the support block and the T-shaped block are respectively inserted into the slot.

[0010] The above technical solutions ensure that the device is unlikely to shift in the downhole vibration environment.

[0011] Preferably, a servo motor is mounted on the side wall of the movable box via a mounting base, and a rotating shaft is rotatably connected to the movable box, the rotating shaft being coaxially connected to the central shaft of the gear.

[0012] Preferably, the output shaft of the servo motor is coaxially connected to the central shaft of the gear, and a lever is fixed on the piston rod of the electric actuator.

[0013] Through the above technical solution, the output shaft of the servo motor drives the gear to rotate through the rotating shaft. The gear meshes with the rack, converting the rotational motion of the servo motor into the linear sliding of the moving box along the T-block, thereby realizing the position adjustment of the drive component on the support block.

[0014] Preferably, a spring is sleeved on the outer peripheral wall of the insertion rod, and two limiting blocks are fixed on the outer peripheral wall of the insertion rod, with the limiting blocks slidably connected to the moving block.

[0015] Preferably, an L-shaped block is slidably connected to the outer peripheral wall of the insertion rod, the L-shaped block is fixedly connected to the moving block, and one end of the spring abuts against the inner wall of the L-shaped block.

[0016] Preferably, a push block is fixed on the insert rod, the other end of the spring abuts against the outer wall of the push block, a through groove is opened on the push block, the lever is inserted into the through groove, and the piston rod diameter of the electric push rod is larger than the hole diameter of the through groove.

[0017] With the above technical solution, the lever is inserted into the through slot and pushes the push block, the L-shaped block slides and the moving block slides. The axial displacement of the lever is limited by the limit block. Then, as the drive component moves, the corresponding moving block slides along the support block to the appropriate monitoring position, so that the moving component can be moved to the appropriate monitoring height.

[0018] Preferably, a protective block is fixed on the movable block, and the protective block is located at the upper end of the PM2.5 sensor module and the oxygen sensor module.

[0019] The above technical solution protects the sensor from flying rocks and particles in the well, reducing the direct damage caused by external impacts.

[0020] The beneficial effects of this utility model are:

[0021] 1. By adjusting the position of the drive components, the corresponding moving components are driven to slide along the support block, enabling the PM2.5 sensor module and the oxygen sensor module to be arranged at multiple points along the length of the support block. This facilitates dynamic adjustment based on the dust diffusion path or areas with abnormal oxygen concentration, improving the monitoring coverage and adapting to the monitoring needs of underground roadways with varying cross-sections and different heights, thus providing a more reliable basis for underground environmental safety assessment.

[0022] 2. When the movable box slides to the target position, the piston rod of the electric actuator pushes the lever to move. The lever inserts into the through slot and pushes the push block, causing the insertion rod to overcome the spring force and slide along the L-shaped block and the movable block, so that the insertion rod separates from the corresponding insertion hole. The axial displacement of the insertion rod is limited by the limit block. Then, as the drive component moves, the corresponding movable block slides along the support block to the appropriate monitoring position, making it convenient to move the movable component to the appropriate monitoring height. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the assembly of the support block structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the movable box structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the movable block structure of this utility model;

[0027] Figure 5 This is a bottom-view perspective view of the insertion rod structure of this utility model.

[0028] In the diagram: 100, support block; 101, mounting base; 102, insertion hole; 103, T-block; 104, rack; 105, slot;

[0029] 200. Drive assembly; 201. Moving box; 202. Gear; 203. Electric actuator; 204. Servo motor; 205. Rotating shaft; 206. Lever;

[0030] 300. Moving component; 301. Moving block; 302. Locking block; 303. Insert rod; 304. Spring; 305. Limiting block; 306. L-shaped block; 307. Push block; 308. Through slot; 309. Protective block;

[0031] 400 PM2.5 sensor module; 500 Oxygen sensor module. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-5 As shown, this embodiment provides a coal mine underground dust concentration monitoring device, including a support block 100 and a moving component 300. Two mounting seats 101 are respectively inserted into both ends of the support block 100. Multiple insertion holes 102 are opened on the outer wall of the support block 100. A T-shaped block 103 is fixed on the support block 100. A rack 104 is embedded in the T-shaped block 103. Multiple driving components 200 are slidably connected to the support block 100.

[0034] The drive assembly 200 includes a movable box 201, which is slidably connected to the T-block 103. A gear 202 is rotatably connected inside the movable box 201, which meshes with the rack 104. An electric push rod 203 is mounted on the movable box 201.

[0035] Multiple moving components 300 are provided. Each moving component 300 includes a moving block 301. Two locking blocks 302 are fixed on the moving block 301. The two locking blocks 302 are respectively engaged with the side walls at both ends of the support block 100. A plug rod 303 is inserted into the moving block 301. The plug rod 303 is engaged with the plug hole 102. A PM2.5 sensor module 400 and an oxygen sensor module 500 are respectively installed on the moving block 301.

[0036] The mounting base 101 has a slot 105, and the two ends of the support block 100 and the T-shaped block 103 are respectively inserted into the slot 105 to ensure that the device is difficult to move in the downhole vibration environment.

[0037] A servo motor 204 is mounted on the side wall of the movable box 201 via a mounting base. A rotating shaft 205 is rotatably connected to the movable box 201. The rotating shaft 205 is coaxially connected to the central shaft of the gear 202. The output shaft of the servo motor 204 is coaxially connected to the central shaft of the gear 202. A lever 206 is fixed on the piston rod of the electric push rod 203. The output shaft of the servo motor 204 drives the gear 202 to rotate via the rotating shaft 205. The gear 202 meshes with the rack 104, converting the rotational motion of the servo motor 204 into the linear sliding of the movable box 201 along the T-block 103, thereby realizing the position adjustment of the drive component 200 on the support block 100.

[0038] A spring 304 is fitted onto the outer peripheral wall of the insertion rod 303. Two limiting blocks 305 are fixedly mounted on the outer peripheral wall of the insertion rod 303, and the limiting blocks 305 are slidably connected to the moving block 301. An L-shaped block 306 is slidably connected to the outer peripheral wall of the insertion rod 303, and the L-shaped block 306 is fixedly connected to the moving block 301. One end of the spring 304 abuts against the inner wall of the L-shaped block 306. A push block 307 is fixedly mounted on the insertion rod 303, and the other end of the spring 304 abuts against the outer wall of the push block 307. A through groove 308 is formed on the push block 307. The rod 206 is inserted into the through slot 308. The piston rod diameter of the electric push rod 203 is larger than the hole diameter of the through slot 308. The lever 206 is inserted into the through slot 308 and pushes the push block 307. The L-shaped block 306 slides and the moving block 301 slides. The axial displacement of the insertion rod 303 is limited by the limiting block 305. Then, as the drive assembly 200 moves, the corresponding moving block 301 slides along the support block 100 to a suitable monitoring position, so that the moving assembly 300 can be moved to a suitable monitoring height.

[0039] A protective block 309 is fixed on the movable block 301. The protective block 309 is located on the upper end of the PM2.5 sensor module 400 and the oxygen sensor module 500. The protective block 309 blocks rocks, particles and other debris splashed downhole, reducing the direct damage to the sensors from external impacts.

[0040] Working principle: The device is fixed to the underground roadway wall or mining machinery by the mounting seats 101 at both ends of the support block 100 to complete the basic positioning. Then, the movable box 201 slides along the T-block 103. The gear 202 meshes with the rack 104 on the T-block 103, driving the movable box 201 to move along the support block 100.

[0041] The movable block 301 is engaged with the side walls of both ends of the support block 100 by the locking block 302, which restricts its radial sway. When the drive component 200 moves to the target position, the insertion rod 303 on the movable block 301 is inserted into the insertion hole 102 on the outer wall of the support block 100 to fix the movable component 300. At this time, the PM2.5 sensor module 400 and the oxygen sensor module 500 are in the monitoring state.

[0042] By adjusting the position of the drive component 200, the corresponding moving component 300 is driven to slide along the support block 100, so that the PM2.5 sensor module 400 and the oxygen sensor module 500 can be arranged at multiple points along the length of the support block 100. This allows for dynamic adjustment based on the dust diffusion path or areas with abnormal oxygen concentration, thereby improving the monitoring coverage and adapting to the monitoring needs of underground roadways with varying cross sections and different heights, providing a more reliable basis for underground environmental safety assessment.

[0043] The two ends of the support block 100 and the T-shaped block 103 are connected to the mounting base 101 through the slot 105 to form a stable installation structure, ensuring that the device is difficult to displace in the downhole vibration environment.

[0044] The output shaft of the servo motor 204 drives the gear 202 to rotate through the rotating shaft 205. The gear 202 meshes with the rack 104, converting the rotational motion of the servo motor 204 into the linear sliding of the moving box 201 along the T-block 103, thereby realizing the position adjustment of the drive component 200 on the support block 100.

[0045] When the movable box 201 slides to the target position, the piston rod of the electric push rod 203 pushes the lever 206 to move. The lever 206 inserts into the through slot 308 and pushes the push block 307, causing the insertion rod 303 to overcome the elastic force of the spring 304 and slide along the L-shaped block 306 and the moving block 301, so that the insertion rod 303 is separated from the corresponding insertion hole 102. The axial displacement of the insertion rod 303 is limited by the limit block 305. Then, as the drive assembly 200 moves, the corresponding moving block 301 slides along the support block 100 to a suitable monitoring and use position, so that the movable assembly 300 can be moved to a suitable monitoring and use height.

[0046] After being moved to a suitable monitoring position, the electric actuator 203 drives the lever 206 to return to the initial position. The spring 304 then resets the push block 307 and the insertion rod 303 to their initial positions, allowing the insertion rod 303 to be inserted into the insertion hole 102 to fix the corresponding moving component 300. This completes the height adjustment of the PM2.5 sensor module 400 and the oxygen sensor module 500, improving the coverage and accuracy of concentration monitoring in underground coal mines.

[0047] The protective block 309 covers the PM2.5 sensor module 400 and the oxygen sensor module 500, blocking rocks, particles, etc. splashed downhole, reducing direct damage to the sensors from external impacts, and ensuring the integrity and reliability of the monitoring elements.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for monitoring dust concentration in a coal mine, characterized in that, Include: Supporting block (100), both ends of the supporting block (100) are respectively inserted with two mounting seats (101), a plurality of insertion holes (102) are formed on the outer wall of the supporting block (100), a T-shaped block (103) is fixedly arranged on the supporting block (100), a rack (104) is embedded on the T-shaped block (103), and a plurality of driving assemblies (200) are slidably connected on the supporting block (100); The driving assembly (200) includes a moving box (201), the moving box (201) is slidably connected with the T-shaped block (103), a gear (202) is rotatably connected in the moving box (201), the gear (202) is meshedly connected with the rack (104), and an electric push rod (203) is mounted on the moving box (201); The moving assembly (300) is provided with a plurality of moving assemblies (300), the moving assembly (300) includes a moving block (301), two clamping blocks (302) are fixedly arranged on the moving block (301), the two clamping blocks (302) are respectively clamped and matched with the two end side walls of the supporting block (100), an insertion rod (303) is inserted on the moving block (301), the insertion rod (303) is inserted and matched with the insertion hole (102), and a PM2.5 sensor module (400) and an oxygen sensor module (500) are respectively mounted on the moving block (301).

2. A coal mine dust concentration monitoring device as claimed in claim 1 wherein: The mounting seat (101) is provided with an insertion slot (105), and both ends of the supporting block (100) and the T-shaped block (103) are respectively inserted and matched with the insertion slot (105).

3. A coal mine dust concentration monitoring device as claimed in claim 2, characterised in that: The side wall of the moving box (201) is provided with a servo motor (204) through the mounting seat, a rotating shaft (205) is rotatably connected on the moving box (201), and the rotating shaft (205) is coaxially connected with the central shaft of the gear (202).

4. A coal mine dust concentration monitoring device as claimed in claim 3 wherein: The output shaft of the servo motor (204) is coaxially connected with the central shaft of the gear (202), and a push rod (206) is fixedly arranged on the piston rod of the electric push rod (203).

5. A coal mine dust concentration monitoring device as claimed in claim 4 wherein: A spring (304) is sleeved on the outer peripheral wall of the insertion rod (303), two limiting blocks (305) are fixedly arranged on the outer peripheral wall of the insertion rod (303), and the limiting blocks (305) are slidably connected with the moving block (301).

6. A coal mine dust concentration monitoring device as claimed in claim 5 wherein: An L-shaped block (306) is slidably connected with the outer peripheral wall of the insertion rod (303), the L-shaped block (306) is fixedly connected with the moving block (301), and one end of the spring (304) abuts against the inner wall of the L-shaped block (306).

7. A coal mine dust concentration monitoring device as claimed in claim 6 wherein: A push block (307) is fixedly arranged on the insertion rod (303), the other end of the spring (304) abuts against the outer wall of the push block (307), a through slot (308) is formed in the push block (307), the push rod (206) is inserted and matched with the through slot (308), and the diameter of the piston rod of the electric push rod (203) is greater than the hole diameter of the through slot (308).

8. A coal mine dust concentration monitoring device as claimed in claim 7, characterised in that: A protection block (309) is fixedly arranged on the moving block (301), and the protection block (309) is located on the upper end of the PM2.5 sensor module (400) and the oxygen sensor module (500).

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