Coal mining safety monitoring and early warning device

Abstract

The utility model provides a coal mining safety monitoring and early warning device, which belongs to the technical field of coal mining production safety monitoring and comprises a fixing plate, an alarm and a gas detector, a fixing frame is arranged at the top of the fixing plate, and a dustproof box is arranged on the fixing frame; an air inlet and an air outlet are formed in the two side faces of the dustproof box respectively, a fan connected with the dustproof box is arranged at the air inlet, the alarm is fixed to the top face of the dustproof box, and the gas detector is fixed to the interior of the dustproof box; the air inlet and the air outlet are connected with connecting pipes correspondingly, and the end, away from the dustproof box, of each connecting pipe is connected with a mounting block. A through groove is formed in the mounting block, a mounting groove is formed in the top of the mounting block, a mounting plate is arranged in the mounting groove, and a filter screen is arranged on the mounting plate. Through the dustproof, movable supporting, power supply and protection design, efficient dust removal, flexible movement, continuous power supply and element protection can be achieved, and monitoring accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of coal mine production safety monitoring technology, and in particular to a coal mine mining safety monitoring and early warning device. Background Technology

[0002] Coal mine production involves various hazards, such as gas explosions, coal dust explosions, water inrushes, fires, and roof collapses. These accidents often result in severe casualties and property damage. To ensure safe production in coal mines, it is essential to monitor the working areas. Currently, workers typically use gas detectors to monitor gas concentrations in the working area to ensure adequate safety. However, due to the high dust levels in coal mine working areas, dust easily accumulates on the surface of gas detectors during use. Over time, this can severely affect the detectors, leading to inaccurate data and reduced usability.

[0003] In the prior art, Chinese patent with authorization announcement number CN221400665U discloses an underground gas concentration detection alarm display device, including a detection shell, ear plates fixedly connected to the lower sides of both sides of the detection shell, a gas collection port provided on the lower front side of the detection shell, two outer shells provided inside the gas collection port, a cavity provided inside the detection shell, a sensor installed on the front side of the cavity, an air duct installed on the lower rear side of the cavity, ear plates fixedly connected to the opposite sides of the two outer shells, filters fixedly connected to the front of the two outer shells, and receiving plates provided on the rear side of the two filters.

[0004] Although the aforementioned device can achieve dust blocking and cleaning through the combination of a filter and a cleaning brush, it still has the following shortcomings in actual use: First, the device requires manual pulling of the handle to drive the cleaning brush to slide, which is cumbersome to operate and the cleaning effect is affected by human factors, making it difficult to meet the continuous operation requirements in high-dust environments; second, the device adopts a fixed installation, which cannot flexibly adjust its position according to the progress of tunneling operations, and lacks effective protective measures, making it susceptible to damage in scenarios such as heavy objects falling underground; third, the device relies on an external power supply, which makes wiring difficult in complex tunnels, and its insufficient battery life restricts the continuity and reliability of monitoring. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing detection and alarm devices, such as cumbersome operation and poor adaptability, and to provide a coal mine safety monitoring and early warning device.

[0006] This utility model is achieved through the following technical solution: a coal mine safety monitoring and early warning device, comprising a fixed plate, an alarm, and a gas detector. A fixed frame is provided on the top of the fixed plate, and a dustproof box is mounted on the fixed frame. An air inlet and an air outlet are respectively opened on both sides of the dustproof box. A fan connected to the dustproof box is installed at the air inlet, and the alarm is fixed to the top surface of the dustproof box, while the gas detector is fixed inside the dustproof box. Connecting pipes are respectively connected to the air inlet and the air outlet, and a mounting block is connected to the end of each connecting pipe furthest from the dustproof box. A through groove communicating with the connecting pipe is opened on the mounting block, and an mounting groove is opened on the top of the mounting block. A mounting plate is detachably installed inside the mounting groove, and a filter screen corresponding to the inner cavity of the connecting pipe is installed on the mounting plate.

[0007] This device accelerates airflow through active ventilation, thereby greatly improving gas detection efficiency. Furthermore, the detachable design of the filter and mounting plate facilitates regular dust removal by staff, preventing blockages from affecting detection accuracy. Simultaneously, the dustproof box isolates the gas detector, reducing dust interference with internal components and ensuring the accuracy of detection data.

[0008] A further improvement of this utility model is that a positioning block is provided on the top of the mounting block, and a slot is opened on the side of the positioning block near the dustproof box. An insert block is movably connected inside the slot. A movable column is connected to the side of the insert block near the dustproof box, and a fixed column is slidably connected to the outside of the movable column. The end of the fixed column away from the movable column is connected to the dustproof box. A spring is provided inside the inner hole of the fixed column. One end of the spring is connected to the movable column extending into the inner hole, and the other end of the spring is connected to the inner hole.

[0009] A further improvement of this utility model is that a displacement groove is provided on the outer wall of the fixed column, and a displacement block is slidably connected inside the displacement groove; the top of the displacement block is connected to a moving column extending into the inner hole, and a baffle plate is connected to the bottom of the displacement block. The baffle plate is located outside the displacement groove and slides in contact with the outer wall of the fixed column, thereby forming a sealing structure for the displacement groove; a connecting groove corresponding to the baffle plate is provided on the dustproof box, and the baffle plate is slidably connected to the connecting groove.

[0010] A further improvement of this utility model is that a battery is provided on the top of the fixing plate and arranged inside the fixing frame, the battery is provided with a charging port, and the battery is located below the dustproof box.

[0011] A further improvement of this utility model is that a protective top plate is provided above the dustproof box, and the protective top plate is fixed to the fixed plate by a support column.

[0012] A further improvement of this utility model is that a plurality of adjusting screws are screwed onto the fixing plate, the adjusting screws penetrate through the fixing plate, and a positioning cone is provided at the bottom end of the adjusting screw.

[0013] A further improvement of this utility model is that a handle is provided on the fixed plate at one end near the air inlet.

[0014] A further improvement of this utility model is that the bottom of the fixing plate is provided with multiple casters.

[0015] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0016] 1. This device, with its dustproof box and detachable filter structure, achieves efficient dust isolation and convenient maintenance. The air inlets and outlets on both sides of the dustproof box, together with the fan, form an airflow path. The filter can be quickly removed via a linkage structure of a moving column and a spring, avoiding the cumbersome operation of existing sliding cleaning methods. This effectively prevents dust accumulation from affecting the detection accuracy of the gas detector and ensures the accuracy of monitoring data.

[0017] 2. The mobile support system of this device balances flexibility and stability. Its omnidirectional casters at the bottom allow for 360° free movement, and the handles facilitate flexible adjustment of the monitoring position by workers within the tunnel, adapting to the dynamic operational needs of coal mine tunneling. The combination of the adjusting screw and the positioning cone allows for quick fixation of the device, preventing displacement during operation and solving the problem of existing fixed devices being unable to keep up with the work face.

[0018] 3. The device's environmental adaptability is enhanced through its self-powered and protective design. The battery can provide repeated power through the charging port, eliminating dependence on underground power sources and ensuring continuous monitoring. The protective top plate and support columns form an impact-resistant structure that can withstand risks such as falling rocks underground, protecting internal components, extending the device's service life, and meeting the safety monitoring needs of complex underground environments. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 2 This is a top view of a specific embodiment of the present utility model.

[0022] Figure 3 yes Figure 2 A three-dimensional cross-sectional view of point AA in the middle.

[0023] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0024] Figure 5 This is a front view of a specific embodiment of the present utility model.

[0025] Figure 6 yes Figure 5 3D cross-sectional view at point BB.

[0026] Figure 7 yes Figure 6 A magnified view of part B in the middle.

[0027] In the diagram: 1. Fixing plate; 2. Alarm; 201. Fixing frame; 202. Dustproof box; 203. Air inlet; 204. Air outlet; 205. Gas detector; 206. Connecting pipe; 207. Mounting block; 208. Through groove; 209. Mounting groove; 3. Mounting plate; 301. Filter screen; 302. Positioning block; 303. Slot; 304. Insert block; 305. Moving column; 306. Fixing column; 307. Inner hole; 308. Spring; 309. Displacement groove; 310. Displacement block; 311. Baffle plate; 312. Connecting groove; 5. Protective top plate; 501. Support column; 6. Battery; 601. Charging port; 7. Casters; 701. Fan; 8. Adjusting screw; 801. Positioning cone; 9. Handle. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] Now refer to Figure 1 — Figure 7The following is a description of a specific embodiment: The coal mine safety monitoring and early warning device of this utility model includes a fixed plate 1, an alarm 2, and a gas detector 205. A fixed frame 201 is provided on the top of the fixed plate 1, and a dustproof box 202 is provided on the fixed frame 201. An air inlet 203 and an air outlet 204 are respectively provided on both sides of the dustproof box 202. A fan 701 connected to the dustproof box 202 is provided at the air inlet 203. The alarm 2 is fixed to the top surface of the dustproof box 202. The gas detector 205 is fixed inside the dustproof box 202; the air inlet 203 and the air outlet 204 are respectively connected to connecting pipes 206, and each connecting pipe 206 is connected to a mounting block 207 at the end away from the dustproof box 202; the mounting block 207 has a through groove 208 communicating with the connecting pipe 206, and the top of the mounting block 207 has a mounting groove 209, and a mounting plate 3 is detachably installed inside the mounting groove 209, and a filter screen 301 corresponding to the inner cavity of the connecting pipe 206 is installed on the mounting plate 3.

[0030] The fixed plate 1 supports the dustproof box 202 via the fixed frame 201. The fan 701 at the air inlet 203 actively draws in air. The gas-containing air enters the through groove 208 of the mounting block 207 through the connecting pipe 206. After being filtered for dust by the filter screen 301, the air enters the dustproof box 202 through the air inlet 203. The gas detector 205 detects the gas concentration inside the box, and the data is displayed or alarmed by the alarm 2. The purified air is discharged from the air outlet 204.

[0031] This device uses a fan 701 for active ventilation, which accelerates airflow and greatly improves gas detection efficiency. The detachable design of the filter 301 and the mounting plate 3 facilitates regular dust removal by staff, preventing blockages from affecting detection accuracy. Meanwhile, the dustproof box 202 isolates the gas detector 205, reducing dust interference with internal components and ensuring the accuracy of detection data.

[0032] Specifically, refer to Figure 3 and Figure 4The mounting block 207 has a positioning block 302 on its top. The positioning block 302 has a slot 303 on the side near the dust box 202. An insert block 304 is movably connected inside the slot 303. A moving column 305 is connected to the side of the insert block 304 near the dust box 202. A fixed column 306 is slidably connected to the outside of the moving column 305. The end of the fixed column 306 away from the moving column 305 is connected to the dust box 202. An inner hole 307 is provided inside the fixed column 306. The moving column 305 can extend into the inner hole 307. A spring 308 is provided inside the inner hole 307. One end of the spring 308 is connected to the moving column 305, and the other end of the spring 308 is connected to the inner hole 307.

[0033] After the mounting plate 3 is inserted into the mounting slot 209, the slot 303 of the positioning block 302 engages with the insert block 304, and the spring 308 pushes the moving column 305 to fix the insert block 304 in place. When disassembly is required, pulling the moving column 305 compresses the spring 308, causing the insert block 304 to disengage from the slot 303, allowing the mounting plate 3 to be removed. The fixing column 306 is connected to the dustproof box 202 and restricts the movement trajectory of the moving column 305.

[0034] This device, through the linkage structure of spring 308 and insert block 304, can quickly lock and unlock filter screen 301, making installation and maintenance convenient and avoiding the cumbersome operation of existing bolt fixing methods, effectively improving the convenience and efficiency of downhole operations.

[0035] Specifically, refer to Figure 1 and Figure 5 The top of the fixing plate 1 is provided with a storage battery 6 arranged inside the fixing frame 201. The storage battery 6 is provided with a charging port 601 and is located below the dustproof box 202.

[0036] The battery 6 is installed inside the mounting bracket 201 and is charged by an external power source through the charging port 601 to power components such as the blower 701, gas detector 205, and alarm 2. When underground power is unavailable, the battery 6 provides independent power.

[0037] This device, through its self-powered design, can eliminate its reliance on underground wiring, making it suitable for complex tunneling scenarios and effectively improving its mobility. Meanwhile, the charging port 601 supports repeated charging, which can reduce operating costs and ensure continuous monitoring.

[0038] In one embodiment, reference Figure 6 and Figure 7The outer wall of the fixed column 306 is provided with a displacement groove 309, and a displacement block 310 is slidably connected inside the displacement groove 309. The top of the displacement block 310 is connected to the moving column 305 extending into the inner hole 307, and the bottom of the displacement block 310 is connected to a baffle plate 311. The baffle plate 311 is located outside the displacement groove 309 and slides in contact with the outer wall of the fixed column 306, thereby forming a sealing structure for the displacement groove 309. The dustproof box 202 is provided with a connecting groove 312 corresponding to the baffle plate 311, and the baffle plate 311 is slidably connected to the connecting groove 312.

[0039] When it is necessary to remove the mounting plate 3, pull the moving column 305 to move it away from the positioning block 302. The moving column 305 drives the displacement block 310 to slide synchronously within the displacement groove 309 of the fixed column 306. At this time, the baffle plate 311 at the bottom of the displacement block 310 slides along the outer wall of the fixed column 306 and slides into the connecting groove 312 on the dustproof box 202, always covering the opening of the displacement groove 309 to prevent dust from entering the inner hole 307 with the movement of the moving column 305. After the moving column 305 compresses the spring 308 to disengage the insert 304 from the slot 303, the mounting plate 3 can be removed for cleaning. When the moving column 305 is released, the spring 308 returns to its original position and pushes the moving column 305. The displacement block 310 drives the baffle plate 311 to slide in the opposite direction, re-sealing the displacement groove 309.

[0040] This device, through the linkage design of the baffle plate 311 and the displacement block 310, can effectively prevent downhole dust from entering the inner hole 307 through the displacement groove 309, avoiding the spring 308 from losing elasticity or becoming stuck due to dust accumulation, thus extending the maintenance cycle and service life of the device. Furthermore, the displacement groove 309 provides a guiding trajectory for the displacement block 310, ensuring the precise movement direction of the moving column 305, preventing misalignment of the engagement position of the insert block 304 and the slot 303, and improving the stability and reliability of the filter screen 301 installation structure. Simultaneously, the sliding dustproof design of the baffle plate 311 eliminates the need for additional disassembly of parts, achieving automatic dustproof function during the operation of the moving column 305, without increasing maintenance complexity, and can adapt to the high-frequency cleaning needs of downhole operations.

[0041] In one embodiment, reference Figure 1 A protective top plate 5 is provided above the dustproof box 202, and the protective top plate 5 is fixed to the fixed plate 1 by a support column 501.

[0042] The protective top plate 5 is fixed above the fixed plate 1 by the support column 501, covering the dust box 202. When a rock falls or equipment collides underground, the protective top plate 5 bears the impact force, preventing the dust box 202 from being directly damaged.

[0043] This physical protection structure enhances the device's impact resistance in harsh downhole environments and protects core detection components; furthermore, the height design of the support column 501 provides heat dissipation space for the dustproof box 202, preventing the equipment from overheating.

[0044] In one embodiment, reference Figure 1 and Figure 5 The fixing plate 1 is screwed with a plurality of adjusting screws 8, the adjusting screws 8 passing through the fixing plate 1, and the bottom end of the adjusting screws 8 is provided with a positioning cone 801.

[0045] The rotating adjusting screw 8 and the positioning cone 801 move downward with the screw and insert into the ground or tunnel floor. The fixed plate 1 is fixed by the friction force of the threaded transmission to prevent the device from shifting during the operation or movement of the fan 701.

[0046] The combination of the positioning cone 801 and the adjusting screw 8 enables the device to be quickly fixed, thus allowing it to adapt to different terrains and ensure the stability of the detection position. At the same time, this adjustable design is compatible with a variety of installation scenarios, which can effectively improve the environmental adaptability of the device.

[0047] Specifically, refer to Figure 1 A handle 9 is provided on the fixed plate 1 at one end near the air inlet 203.

[0048] The handle 9 is fixed to one end of the fixed plate 1 near the air inlet 203. The staff can push or pull the device by holding the handle 9 and adjust the direction of movement in conjunction with the casters 7.

[0049] This device reduces the difficulty of operation through the ergonomic design of the handle 9, making it especially suitable for position adjustment in narrow alleys; and the position layout of the handle 9 makes it easier for operators to control the direction of movement of the device, improving the flexibility of movement.

[0050] Specifically, refer to Figure 1 The bottom of the fixed plate 1 is provided with multiple casters 7.

[0051] The caster wheel 7 is installed at the bottom of the fixed plate 1 and can rotate 360°. When the device needs to be moved, the fixed plate 1 is pushed by the handle 9, and the caster wheel 7 rolls to move the device to the target position, and then it is fixed by adjusting the screw 8.

[0052] The design of the omnidirectional wheels 7 enables the device to be mobile and can adjust the monitoring position in real time according to the progress of the tunneling operation, thus achieving dynamic monitoring. Moreover, the combination of mobile and fixed functions solves the problem that existing fixed monitoring devices cannot keep up with the work face, and can effectively improve the monitoring coverage.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coal mine safety monitoring and early warning device, comprising a fixed plate (1), an alarm (2), and a gas detector (205), characterized in that, A fixing frame (201) is provided on the top of the fixing plate (1), and a dustproof box (202) is provided on the fixing frame (201); an air inlet (203) and an air outlet (204) are respectively opened on both sides of the dustproof box (202), a fan (701) connected to the dustproof box (202) is provided at the air inlet (203), and the alarm (2) is fixed on the top surface of the dustproof box (202), and the gas detector (205) is fixed inside the dustproof box (202); the air inlet (203) A connecting pipe (206) is connected to the air outlet (204) respectively. Each connecting pipe (206) is connected to a mounting block (207) at the end away from the dust box (202). A through groove (208) communicating with the connecting pipe (206) is opened on the mounting block (207), and a mounting groove (209) is opened on the top of the mounting block (207). A mounting plate (3) is detachably installed inside the mounting groove (209), and a filter screen (301) corresponding to the inner cavity of the connecting pipe (206) is provided on the mounting plate (3).

2. The coal mine safety monitoring and early warning device according to claim 1, characterized in that, The mounting block (207) is provided with a positioning block (302) on its top. The positioning block (302) has a slot (303) on the side near the dust box (202). The slot (303) is movably connected to a plug (304). The plug (304) is connected to a moving column (305) on the side near the dust box (202). A fixed column (306) is slidably connected to the outside of the moving column (305). The end of the fixed column (306) away from the moving column (305) is connected to the dust box (202). A spring (308) is provided inside the inner hole (307) of the fixed column (306). One end of the spring (308) is connected to the moving column (305) extending into the inner hole (307). The other end of the spring (308) is connected to the inner hole (307).

3. The coal mine safety monitoring and early warning device according to claim 2, characterized in that, A displacement groove (309) is provided on the outer wall of the fixed column (306), and a displacement block (310) is slidably connected inside the displacement groove (309); the top of the displacement block (310) is connected to a moving column (305) extending into the inner hole (307), and a baffle plate (311) is connected to the bottom of the displacement block (310). The baffle plate (311) is located outside the displacement groove (309) and slides in contact with the outer wall of the fixed column (306), thereby forming a sealed structure of the displacement groove (309); a connecting groove (312) corresponding to the baffle plate (311) is provided on the dustproof box (202), and the baffle plate (311) is slidably connected to the connecting groove (312).

4. The coal mine safety monitoring and early warning device according to claim 1, characterized in that, The top of the fixing plate (1) is provided with a storage battery (6) arranged inside the fixing frame (201), the storage battery (6) is provided with a charging port (601), and the storage battery (6) is located below the dust box (202).

5. A coal mine safety monitoring and early warning device according to claim 1, characterized in that, A protective top plate (5) is provided above the dustproof box (202), and the protective top plate (5) is fixed to the fixing plate (1) by a support column (501).

6. A coal mine safety monitoring and early warning device according to claim 1, characterized in that, Multiple adjusting screws (8) are screwed onto the fixed plate (1). The adjusting screws (8) pass through the fixed plate (1), and a positioning cone (801) is provided at the bottom end of the adjusting screws (8).

7. A coal mine safety monitoring and early warning device according to claim 1, characterized in that, A handle (9) is provided on the fixed plate (1) at one end near the air inlet (203).

8. A coal mine safety monitoring and early warning device according to claim 1, characterized in that, The bottom of the fixed plate (1) is provided with multiple casters (7).

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