A mine safety monitoring device

Abstract

The application relates to the technical field of monitoring devices, and discloses a mine safety monitoring device which comprises a shell, a detection main body and a cleaning assembly. The detection main body is installed in the inside of the shell, the top of the detection main body is provided with a gas detector, and the detection end of the gas detector extends out of the shell through the top of the shell. The cleaning assembly comprises a driving piece, a cleaning piece, a transmission rod and a connecting rod. The cleaning piece is sleeved on the outer periphery of the detection end of the gas detector and contacts the end face of the detection end of the gas detector. One end of the connecting rod close to the cleaning piece is connected with the cleaning piece, and the other end is in transmission connection with the transmission rod. One end of the transmission rod close to the driving piece is connected with the output shaft of the driving piece. The driving piece is used for driving the connecting rod to rotate so as to drive the cleaning piece to rotate around the central shaft of the gas detector. Dust or impurities in the mine environment can be avoided from accumulating on the detection end, the detection end of the gas detector can be ensured to be in full contact with the mine air at all times, and the gas concentration in the mine can be accurately sensed.

Description

Technical Field

[0001] This application relates to the field of monitoring device technology, and in particular to a mine safety monitoring device. Background Technology

[0002] A mine is a general term for the shafts, tunnels, equipment, surface buildings and structures that form an underground coal mine production system. Sometimes, inclined shafts, vertical shafts, and adits in underground mine development are also referred to as mines. Determining the size of the mining area, the production capacity and service life of each mine is one of the key issues that must be resolved in the mine's self-design.

[0003] Currently, when working underground, monitoring is necessary to obtain information about the mine due to the unstable factors underground. However, due to the complex environment inside the mine, there is often a large amount of dust and other impurities in the air. Over time, dust or impurities accumulate on the detection end of the safety monitoring devices, making it impossible for the devices to accurately sense humidity, harmful gases, etc., inside the mine, thus preventing early warning of disasters. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a mine safety monitoring device.

[0005] This application provides a mine safety monitoring device, including:

[0006] The outer casing has a first direction and a second direction that are perpendicular to each other;

[0007] The detection body is installed inside the housing. A gas detector extending along the first direction is provided on the top of the detection body. The detection end of the gas detector extends out of the housing through the top of the housing and is electrically connected to the detection body.

[0008] The cleaning assembly includes a drive component, a cleaning component, a transmission rod, and a connecting rod. The cleaning component is sleeved around the outer periphery of the gas detector's detection end and contacts the end face of the gas detector's detection end. The connecting rod is arranged along a first direction, with one end of the connecting rod near the cleaning component connected to the cleaning component and the other end of the connecting rod away from the cleaning component connected to the transmission rod. The transmission rod is arranged along a second direction, with one end of the transmission rod near the drive component connected to the output shaft of the drive component. The drive component is mounted on the top of the housing and is used to drive the connecting rod to rotate, thereby causing the cleaning component to rotate around the central axis of the gas detector, thus cleaning the end face of the gas detector's detection end.

[0009] In one embodiment, the cleaning assembly further includes a dustproof housing and a first transmission gear. The dustproof housing is fitted onto the transmission rod, and the portion of the transmission rod located inside the dustproof housing is circumferentially threaded. The first transmission gear is mounted on one end of the connecting rod near the transmission rod, and the first transmission gear is located inside the dustproof housing and meshes with the transmission thread.

[0010] In one embodiment, the top of the housing has an opening for the detection end of the gas detector to be exposed, and a limiting ring is provided around the outer periphery of the opening;

[0011] The cleaning component includes a ring body and multiple cleaning strips. The outer circumferential surface of the ring body makes rolling contact with the groove of the limiting ring, so that the ring body can rotate around the central axis of the gas detector. The multiple cleaning strips are distributed circumferentially along the inner side of the ring body, and one end of each cleaning strip is connected to the inner sidewall of the ring body, while the other end extends toward the center of the ring body and converges radially to form a connecting seat. The end of the connecting rod away from the transmission rod is connected to the connecting seat.

[0012] In one embodiment, the mine safety monitoring device further includes:

[0013] A pin, which is connected to the bottom of the detection body, has its tip extending out of the outer shell through the bottom of the outer shell for insertion into the soil.

[0014] In one embodiment, the mine safety monitoring device further includes:

[0015] A humidity detector is located inside the pin. The surface of the pin has an infiltration port so that when the pin is inserted into the soil, the moisture in the soil flows into the interior of the pin through the infiltration port, and the humidity detector detects the moisture of the soil.

[0016] In one embodiment, a plurality of ground nails are circumferentially connected to the bottom of the outer casing, and a clearance opening is provided at the bottom of the detection body corresponding to the position of the ejector pin. The end of the ejector pin away from the detection body extends out of the outer casing through the clearance opening, and the plurality of ground nails surround the outer periphery of the ejector pin, with the tips of the ground nails and the tips of the ejector pins facing the same direction.

[0017] The length of the ground nail is 2 / 3 - 1 of the length of the pin.

[0018] In one embodiment, the mine safety monitoring device further includes:

[0019] A fixing component includes a base plate and a guide post. The base plate is located below the outer shell. The base plate has a first through hole and a second through hole respectively corresponding to the positions of the ejector pin and the ground nail. The guide post is located between the base plate and the outer shell along the first direction. One end of the guide post is fixedly connected to the base plate, and the other end extends into the interior of the outer shell. The outer shell can slide along the axial direction of the guide post to move closer to or away from the base plate.

[0020] In one embodiment, the fixing assembly further includes a second transmission gear and a rack. The guide post has teeth on one side facing the rack. The rack is disposed inside the housing along the first direction and located on the opposite side of the guide post. A mounting position is defined between the rack and the guide post. The second transmission gear is rotatably disposed in the mounting position, and the teeth of the second transmission gear mesh with the teeth of the guide post and the teeth of the rack.

[0021] In one embodiment, the fixing assembly further includes a handle and two bearing seats, the two bearing seats being disposed on the front and rear sides of the mounting position, and the second transmission gear being located between the two bearing seats; wherein, the bearing seat near the inner side of the housing is provided with a positioning hole;

[0022] The handle includes a horizontal bar and vertical bars connected to both ends of the horizontal bar. The horizontal bar extends in a third direction and protrudes outside the housing. The vertical bar passes through the housing from the outside of the housing, directly opposite the positioning hole. The vertical bar and the insertion hole of the housing are in a sliding fit.

[0023] Specifically, when the horizontal bar is pulled inward along the second direction, the vertical bar extends from the positioning hole into the tooth hole of the second transmission gear to lock the second transmission gear; when the horizontal bar is pulled outward along the second direction, the vertical bar exits from the tooth hole of the second transmission gear to release the second transmission gear.

[0024] In one embodiment, the fixing assembly further includes a locking block and a spring, the locking block being sleeved on the vertical rod and located outside the bearing seat, and the spring being sleeved on the vertical rod and located between the locking block and the inner side of the housing.

[0025] Compared with the prior art, the technical solutions provided in this application have the following advantages:

[0026] The cleaning component is placed on the outer periphery of the gas detector's detection end and contacts the end face of the detection end. When dust or impurities accumulate on the end face of the detection end, the drive component can drive the transmission rod to rotate. Since one end of the connecting rod is connected to the transmission rod and the other end of the connecting rod is connected to the cleaning component, the rotation of the transmission rod drives the connecting rod to rotate simultaneously, thereby causing the cleaning component to rotate around the central axis of the gas detector. This achieves a 360° comprehensive cleaning of the end face of the detection end, preventing dust or impurities in the mine environment from accumulating on the detection end. It ensures that the detection end of the gas detector is always in full contact with the mine air, thereby accurately sensing the gas concentration in the mine and providing reliable data support for disaster early warning. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of a mine safety monitoring device according to this application;

[0028] Figure 2 This is a structural schematic diagram of a mine safety monitoring device from another perspective, as described in this application;

[0029] Figure 3 This is a schematic diagram of the interior of the outer casing of a mine safety monitoring device according to this application;

[0030] Figure 4 This is a schematic diagram of the cleaning component in a mine safety monitoring device according to this application;

[0031] Figure 5 This is a schematic diagram of the structure of a fixed component in a mine safety monitoring device according to this application;

[0032] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0033] Figure 7 This is a schematic diagram of the handle in a mine safety monitoring device according to this application.

[0034] Numbering on the map:

[0035] 10. Outer shell; 20. Detection body; 20a. Gas detector; 30. Cleaning assembly; 31. Drive component; 32. Cleaning component; 321. Ring body; 322. Cleaning strip; 323. Connecting seat; 33. Connecting rod; 34. Dustproof shell; 35. First transmission gear; 40. Limiting ring; 50. Pin; 50a. Infiltration port; 60. Ground nail; 70. Fixing assembly; 71. Base plate; 71a. First perforation; 71b. Second perforation; 72. Guide post; 73. Handle; 731. Horizontal bar; 732. Vertical bar; 74. Second transmission gear; 75. Rack; 76. Bearing seat; 77. Spring; 78. Locking block; X, third direction; Y, second direction; Z, first direction. Detailed Implementation

[0036] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0037] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0039] The following explains and describes the relevant terms used in the embodiments of this application.

[0040] The detection unit 20, representing a component integrating signal acquisition, analysis, storage, control, and communication functions, is the core control and data processing unit of the mine safety monitoring device. In practical applications, the detection unit 20 includes a housing and functional modules such as a main control module (e.g., an STM32H743 microprocessor), a power supply module (e.g., a DC-DC converter), a communication module (e.g., an SX1278 chip), a storage module (e.g., a Flash chip), and a signal processing unit, all housed within the housing. The connections and signal transmission between the various functional modules within the detection unit 20 are common knowledge in the field (e.g., the content disclosed in CN116381165B), and will not be elaborated upon further.

[0041] The pin 50 is used to break through the soil surface and insert into the soil to fix the mine safety monitoring device. Therefore, the pin 50 needs to be made of a wear-resistant and corrosion-resistant alloy material (such as chromium-molybdenum steel). Furthermore, after the pin 50 is inserted into the soil, moisture flows into the interior of the pin 50 through the inlet 50a and is detected by a humidity detector located inside the pin 50 to determine the soil moisture content. However, during this process, sediment also flows into the pin 50 through the inlet 50a, causing blockage and affecting the detection of soil moisture. Therefore, in this embodiment, the inlet 50a is covered with a water-permeable and sand-proof membrane (such as a polytetrafluoroethylene microporous membrane).

[0042] The first direction, the second direction Y, and the third direction X are defined for the convenience of describing the positional relationship between components, and the outer casing 10 can be used as a reference. The first direction is the height direction of the outer casing 10 (referring to...). Figure 1 The second direction is the width direction of the outer shell 10 (refer to the Z direction). Figure 1 The Y direction in the middle), and the third direction X is the length direction of the outer shell 10 (refer to the Y direction). Figure 1 (in the X direction).

[0043] Figure 1 This is a schematic diagram of an embodiment of a mine safety monitoring device according to this application; Figure 2 This is a structural schematic diagram of a mine safety monitoring device from another perspective, as described in this application; Figure 3 This is a schematic diagram of the internal structure of the outer casing of a mine safety monitoring device according to this application. Please refer to it as well. Figures 1 to 3As shown in the illustration, this application provides a mine safety monitoring device, which includes a housing 10, a detection body 20, and a cleaning assembly 30. The detection body 20 is installed inside the housing 10, and a gas detector 20a extending in a first direction is provided on the top of the detection body 20. The gas detector 20a is used to detect the gas content in the mine. The detection end of the gas detector 20a extends out of the housing 10 through the top of the housing 10, and the gas detector 20a is electrically connected to the detection body 20. That is, by setting the gas detector 20a on the top of the detection body 20 and embedding the detection body 20 inside the housing 10, with only the detection end of the gas detector 20a extending out of the housing 10 through the top of the housing 10, the gas content in the mine can be detected using the detection end. The detected gas content is then transmitted to the detection body 20 in the form of an electrical signal, and the detection body 20 determines the gas content based on the received signal. If the gas content exceeds a set safety threshold, a warning signal is issued to alert the workers.

[0044] Figure 4 This is a schematic diagram of the cleaning component in a mine safety monitoring device according to this application. Please refer to... Figure 4 The cleaning component 30 includes a driving component 31, a cleaning component 32, a transmission rod, and a connecting rod 33. The cleaning component 32 is sleeved on the outer periphery of the detection end of the gas detector 20a and contacts the end face of the detection end of the gas detector 20a. The connecting rod 33 is arranged along a first direction, and the end of the connecting rod 33 near the cleaning component 32 is connected to the cleaning component 32. The end of the connecting rod 33 away from the cleaning component 32 is connected to the transmission rod. The transmission rod is arranged along a second direction Y, and the end of the transmission rod near the driving component 31 is connected to the output shaft of the driving component 31. The driving component 31 is installed on the top of the housing 10 and is used to drive the connecting rod 33 to rotate, thereby driving the cleaning component 32 to rotate around the central axis of the gas detector 20a, thereby cleaning the end face of the detection end of the gas detector 20a.

[0045] In practical applications, the cleaning component 32 is positioned on the outer periphery of the detection end of the gas detector 20a and contacts the end face of the detection end. When dust or impurities accumulate on the end face of the detection end, the drive component 31 can be used to drive the transmission rod to rotate. Since one end of the connecting rod 33 is connected to the transmission rod and the other end of the connecting rod 33 is connected to the cleaning component 32, the rotation of the transmission rod drives the connecting rod 33 to rotate simultaneously, thereby causing the cleaning component 32 to rotate around the central axis of the gas detector 20a. This achieves a 360° comprehensive cleaning of the end face of the detection end, preventing dust or impurities in the mine environment from accumulating on the detection end. It ensures that the detection end of the gas detector 20a is always in full contact with the mine air, thereby accurately sensing the gas concentration in the mine and providing reliable data support for disaster early warning.

[0046] It should be noted that the power component in this embodiment is a component used to drive the drive shaft to rotate and provide power, such as an electric fan. While driving the drive shaft to rotate, the electric fan can also generate directional airflow to form an air curtain near the detection end of the gas detector 20a, reducing the direct adhesion of surrounding dust.

[0047] The specific method of connecting the connecting rod 33 and the transmission rod can be the commonly used method in the prior art, or it can participate in the threaded transmission method. That is, the transmission rod is provided with a transmission thread along the circumferential direction on the rod body, and a first transmission gear 35 is installed at the end of the connecting rod 33 near the transmission rod. The first transmission gear 35 is meshed with the transmission thread on the transmission rod, so that when the power component drives the transmission rod to rotate, it drives the first transmission gear 35 to rotate, thereby driving the connecting rod 33 to rotate, thereby driving the cleaning component 32 to rotate around the central axis of the gas detector 20a.

[0048] In practical applications, due to the presence of significant dust and impurities in mines, if the first transmission gear 35 of the transmission rod is exposed, dust or impurities will adhere to the transmission threads of the transmission rod or the first transmission gear 35, causing jamming between the transmission rod and the connecting rod 33. This disrupts the normal meshing of the second transmission gear 74, preventing it from rotating smoothly or even causing a "tooth knocking" phenomenon, thus interrupting the entire transmission. Ultimately, this prevents the cleaning component 32 from being driven to rotate, resulting in a loss of cleaning capability for the gas detector 20a's detection end. Therefore, in this embodiment, the cleaning assembly 30 also includes a dustproof shell 34, which is fitted onto the transmission rod, with the portion of the transmission rod with the transmission threads and the first transmission gear 35 located inside the dustproof shell 34.

[0049] Please refer to Figure 3 and Figure 4 In one embodiment, the top of the outer casing 10 has an opening for the detection end of the gas detector 20a to be exposed, and a limiting ring 40 is provided around the outer periphery of the opening. The cleaning component 32 includes a ring body 321 and multiple cleaning strips 322. The outer circumferential surface of the ring body 321 rolls in contact with the annular groove of the limiting ring 40, allowing the ring body 321 to rotate around the central axis of the gas detector 20a. The multiple cleaning strips 322 are spaced apart circumferentially along the inner side of the ring body 321, with one end connected to the inner wall of the ring body 321 and the other end extending towards the center of the ring body 321 and converging radially to form a connecting seat 323. The end of the connecting rod 33 furthest from the transmission rod is connected to the connecting seat 323.

[0050] In other words, by setting a limiting ring 40 on the outer periphery of the opening, the ring body 321 of the cleaning component 32 forms a rolling contact with the annular groove of the limiting ring 40 (for example, a ball bearing is set between the annular groove and the ring body 321), thereby ensuring that the ring body 321 can only rotate around the central axis of the gas detector 20a. This ensures that the multiple radial cleaning strips 322 can always make a circular motion around the central axis of the gas detector 20a, uniformly covering every area of ​​the end face of the detector. At the same time, it also prevents the cleaning strips 322 from colliding with the side of the detector or the housing due to trajectory deviation, thus preventing damage to the detector end or breakage of the cleaning strips 322.

[0051] In addition, one end of each cleaning strip 322 extends toward the center of the ring 321 to form a connecting seat 323, so that the connecting seat 323 can serve as the force center of the cleaning component 32, and evenly distribute the rotational power of the connecting rod 33 to each cleaning strip 322, thereby preventing a single cleaning strip 322 from breaking due to uneven force and solving the problem of excessive local stress causing component damage in the traditional distributed connection method.

[0052] Please refer to Figure 2 In one embodiment, the mine safety monitoring device further includes a pin 50, which is connected to the bottom of the detection body 20. The tip of the pin 50 extends out of the outer casing 10 through the bottom of the casing 10 and is used to insert into the soil. Thus, by inserting the tip of the pin 50 into the soil, the detection body 20 and the outer casing 10 are stably fixed at the target monitoring position within the mine (such as the bottom of a roadway, near the working face, etc.), effectively preventing the device from shifting or tipping due to external forces, ensuring that the monitoring device is always at the preset monitoring point, and avoiding data distortion caused by positional changes.

[0053] In mine safety, changes in deep soil moisture (such as rock seepage and groundwater infiltration) are often directly related to major risks such as water hazards and roof / floor deformation. For example, an abnormal increase in deep soil moisture may indicate water leakage, which could lead to collapse or water inrush. Therefore, it is necessary to monitor soil moisture in the mine at all times during operations. In one embodiment, the mine safety monitoring device also includes a moisture detector, which is located inside the probe 50. The probe 50 has an inlet 50a on its surface so that after the probe 50 is inserted into the soil, the moisture level can be monitored. The moisture in the soil flows into the interior of the probe 50 through the infiltration port 50a and is detected by a humidity detector to determine the soil moisture. In other words, after the probe 50 is inserted into the soil, the moisture in the soil will flow into the interior of the probe 50 through the infiltration port 50a and come into contact with the humidity detector, which will then detect the moisture in the soil. This avoids monitoring deviations caused by environmental interference with the surface soil (such as temporary water accumulation or surface water vapor evaporation) and can better reflect the true deep soil moisture status, providing accurate data support for early warning of risks such as mine water hazards and geological stability.

[0054] The humidity detector is cleverly integrated into the probe 50, eliminating the need for separate humidity detection components and mounting structures (such as a separate humidity sensor probe, external conduit, etc.), thus simplifying the overall structure of the device and reducing component redundancy. Simultaneously, the probe 50 itself serves the dual function of fixing the device and carrying the humidity detector. Installation requires only a single insertion operation to fix the device and deploy the humidity detection component, reducing installation steps in the complex environment of mines and improving the deployment efficiency of monitoring points.

[0055] Please refer to Figure 2 In one embodiment, a plurality of ground nails 60 are circumferentially connected to the bottom of the outer casing 10. A clearance opening is provided at the bottom of the detection body 20 corresponding to the position of the ejector pin 50. The end of the ejector pin 50 away from the detection body 20 extends out of the outer casing 10 through the clearance opening. The plurality of ground nails 60 surround the outer periphery of the ejector pin 50, with the tips of the ground nails 60 facing the same direction as the tips of the ejector pin 50. That is, the plurality of ground nails 60 surrounding the ejector pin 50 form a composite fixing structure of "central ejector pin 50 + circumferential ground nails 60," allowing the ejector pin 50 to act as the central anchor point, providing the main insertion depth and longitudinal fixing force. The circumferentially distributed ground nails 60 supplement the fixing from multiple radial directions, thereby effectively dispersing external forces generated by vibration, impact, or soil loosening in the mining environment. This avoids tilting, rotation, or pull-out phenomena caused by single-point fixing (only the ejector pin 50), significantly improving the stability of the device under complex geological conditions such as loose soil and fractured rock layers, ensuring that the monitoring position remains unchanged for a long time.

[0056] The length of the ground stake 60 is 2 / 3 - 1 of the length of the pin 50. If the ground stake 60 is too short (less than 2 / 3 of the pin 50's length), the insertion depth will be insufficient, making it difficult to provide effective auxiliary fixation and resist lateral forces. If the ground stake 60 is too long (exceeding the pin 50's length), interference may occur during insertion, causing the pin 50 to suspend and fail to penetrate the soil, preventing the moisture detector built into the pin 50 from detecting soil moisture. Therefore, setting the length of the ground stake 60 to 2 / 3 - 1 of the pin 50 ensures both sufficient insertion depth and that the pin 50 is inserted into the soil, enabling the moisture detector to detect soil moisture.

[0057] In one embodiment, the mine safety monitoring device further includes a fixing component 70, which includes a base plate 71 and a guide post 72. The base plate 71 is located below the outer shell 10. The base plate 71 has a first through hole 71a and a second through hole 71b respectively corresponding to the positions of the ejector pin 50 and the ground nail 60. The guide post 72 is located between the base plate 71 and the outer shell 10 along a first direction. One end of the guide post 72 is fixedly connected to the base plate 71, and the other end extends into the interior of the outer shell 10. The outer shell 10 can slide along the axial direction of the guide post 72 to approach or move away from the base plate 71.

[0058] In practical applications, the base plate 71 is first placed in the area to be installed. At this time, the pin 50 and the ground nail 60 are located above the base plate 71. Since the base plate 71 is provided with a guide post 72 along the first direction, and one end of the guide post 72 extends into the inside of the outer shell 10, the outer shell 10 can slide along the axial direction of the guide post. Then, the outer shell 10 is pressed down and moved downward, so that the pin 50 and the ground nail 60 pass through the first through hole 71a and the second through hole 71b respectively and are inserted into the soil, thereby completing the fixed installation. After use, the base plate 71 is stepped on and the outer shell 10 is pulled up, so that the pin 50 and the ground nail 60 are detached from the soil, and the disassembly can be completed quickly. At this time, the ground nail 60 and the pin 50 are located above the base plate 71, so that the ground nail 60 will not easily injure the construction personnel during transportation.

[0059] Figure 5 This is a schematic diagram of the fixed component 70 in a mine safety monitoring device according to this application. Please refer to... Figure 5 Furthermore, the fixing assembly 70 also includes a second transmission gear 74 and a rack 75. The guide post 72 has teeth on the side facing the rack 75. The rack 75 is disposed inside the housing 10 along the first direction and is located on the opposite side of the guide post 72. A mounting position is defined between the rack 75 and the guide post 72. The second transmission gear 74 is rotatably disposed in the mounting position, and the teeth of the second transmission gear 74 mesh with the teeth of the guide post 72 and the rack 75. That is, when the housing 10 is pressed down, the rack 75 moves down with the housing 10. At this time, the second transmission gear 74 is driven to rotate, while the guide post 72 moves upward relative to the housing 10. As the housing 10 continues to descend, the pin 50 and the ground nail 60 pass through the first through hole 71a and the second through hole 71b respectively and are inserted into the soil, thereby completing the fixed installation of the device. Meshing transmission transmits power through rigid contact between teeth, reducing the gap wobble that may occur in sliding fits, making the sliding process of the housing 10 smoother, and solving the problems of low adjustment accuracy and easy deviation in simple sliding fits.

[0060] Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7This is a schematic diagram of the handle 73 in a mine safety monitoring device according to this application. Please refer to... Figure 6 and Figure 7 In one embodiment, the fixing assembly 70 further includes a handle 73 and two bearing seats 76, which are respectively disposed on the front and rear sides of the mounting position, and the second transmission gear 74 is located between the two bearing seats 76. The bearing seat 76 near the inner side of the housing 10 is provided with a positioning hole. The handle 73 includes a horizontal bar 731 and vertical bars 732 connected to both ends of the horizontal bar 731. The horizontal bar 731 extends in a third direction X and protrudes outside the housing 10. The vertical bars 732 pass through the housing 10 from the outside of the housing 10, directly opposite the positioning hole, and the vertical bars 732 and the insertion hole of the housing 10 are in a sliding fit. Specifically, when the horizontal bar 731 is pulled inward along the second direction Y, the vertical bar 732 extends from the positioning hole into the tooth hole of the second transmission gear 74 to lock the second transmission gear 74; when the horizontal bar 731 is pulled outward along the second direction Y, the vertical bar 732 exits from the tooth hole of the second transmission gear 74 to release the second transmission gear 74.

[0061] In this embodiment, the locking or unlocking of the second transmission gear 74 is switched by pulling the handle 73 outward or inward along the second direction Y. For ease of understanding, the locking and unlocking of the second transmission gear 74 are explained below:

[0062] The working principle of locking the second transmission gear 74: The operator pushes the horizontal bar 731 of the handle 73 inward along the second direction Y. The horizontal bar 731 drives the vertical bars 732 at both ends to move inward in the second direction Y. Since the vertical bar 732 and the insertion hole of the outer shell 10 are in sliding fit, the vertical bar 732 can move in a straight line without jamming. Under the guidance of the positioning hole of the bearing seat 76, it is aligned with the tooth hole of the second transmission gear 74. After the end of the vertical bar 732 completely passes through the positioning hole and extends into the tooth hole of the second transmission gear 74, the second transmission gear 74 is locked and cannot continue to rotate. At this time, the meshing relationship between the second transmission gear 74, the rack 75, and the guide post 72 is stationary, and the relative position of the outer shell 10 and the base plate 71 is fixed.

[0063] The working principle of the second transmission gear 74 being released: The operator pulls the horizontal bar 731 of the handle 73 outward along the second direction Y. The horizontal bar 731 drives the vertical bar 732 to move outward in the second direction Y. The vertical bar 732 slides in the opposite direction along the insertion hole and positioning hole of the outer shell 10, and gradually exits from the tooth hole of the second transmission gear 74. When the vertical bar 732 is completely disengaged from the tooth hole of the second transmission gear 74, the teeth of the second transmission gear 74 are no longer blocked by the vertical bar 732. At this time, the second transmission gear 74 can rotate freely. Through the meshing transmission with the rack 75 and the guide rod, it drives the outer shell 10 to slide along the axial direction of the guide post, thereby realizing the adjustment of the insertion depth of the pin 50 and the ground nail 60 into the soil.

[0064] Please refer to Figure 7 In one embodiment, the fixing component 70 further includes a locking block 78 and a spring 77. The locking block 78 is sleeved on the vertical rod 732 and located outside the bearing seat 76. The spring 77 is sleeved on the vertical rod 732 and located between the locking block 78 and the inner side of the outer casing 10. Thus, when the ejector pin 50 and the ground nail 60 are removed from the soil, the horizontal bar 731 of the pull handle 73 is released. At this time, the spring 77, which is in a compressed state, drives the vertical rod 732 to pass through the positioning hole and extend into the tooth hole of the second transmission gear 74 due to its own restoring elasticity, thereby locking the second transmission gear 74 and restricting the downward movement of the outer casing 10, ensuring that the ground nail 60 will not easily injure construction personnel during transportation.

[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A mine safety monitoring device, characterized in that, include: The outer casing has a first direction and a second direction that are perpendicular to each other; The detection body is installed inside the housing. A gas detector extending along the first direction is provided on the top of the detection body. The detection end of the gas detector extends out of the housing through the top of the housing and is electrically connected to the detection body. The cleaning assembly includes a drive component, a cleaning component, a transmission rod, and a connecting rod. The cleaning component is sleeved around the outer periphery of the gas detector's detection end and contacts the end face of the gas detector's detection end. The connecting rod is arranged along a first direction, with one end of the connecting rod near the cleaning component connected to the cleaning component and the other end of the connecting rod away from the cleaning component connected to the transmission rod. The transmission rod is arranged along a second direction, with one end of the transmission rod near the drive component connected to the output shaft of the drive component. The drive component is mounted on the top of the housing and is used to drive the connecting rod to rotate, thereby causing the cleaning component to rotate around the central axis of the gas detector, thus cleaning the end face of the gas detector's detection end.

2. The mine safety monitoring device according to claim 1, characterized in that, The cleaning assembly further includes a dustproof housing and a first transmission gear. The dustproof housing is fitted onto the transmission rod, and the portion of the transmission rod located inside the dustproof housing is circumferentially threaded. The first transmission gear is installed on the end of the connecting rod near the transmission rod, and the first transmission gear is located inside the dustproof housing and meshes with the transmission thread.

3. The mine safety monitoring device according to claim 1, characterized in that, The top of the outer casing has an opening for the detection end of the gas detector to be exposed, and a limiting ring is provided around the outer periphery of the opening; The cleaning component includes a ring body and multiple cleaning strips. The outer circumferential surface of the ring body makes rolling contact with the groove of the limiting ring, so that the ring body can rotate around the central axis of the gas detector. The multiple cleaning strips are distributed circumferentially along the inner side of the ring body, and one end of each cleaning strip is connected to the inner sidewall of the ring body, while the other end extends toward the center of the ring body and converges radially to form a connecting seat. The end of the connecting rod away from the transmission rod is connected to the connecting seat.

4. The mine safety monitoring device according to claim 1, characterized in that, The mine safety monitoring device also includes: A pin, which is connected to the bottom of the detection body, has its tip extending out of the outer shell through the bottom of the outer shell for insertion into the soil.

5. The mine safety monitoring device according to claim 4, characterized in that, The mine safety monitoring device also includes: A humidity detector is located inside the pin. The surface of the pin has an infiltration port so that when the pin is inserted into the soil, the moisture in the soil flows into the interior of the pin through the infiltration port, and the humidity detector detects the moisture of the soil.

6. The mine safety monitoring device according to claim 5, characterized in that, The bottom of the outer shell is connected with a plurality of ground nails along the circumferential direction. The bottom of the detection body is provided with a clearance opening corresponding to the position of the ejector pin. The end of the ejector pin away from the detection body extends out of the outer shell through the clearance opening. The plurality of ground nails surround the outer periphery of the ejector pin, and the tips of the ground nails and the tips of the ejector pins face the same direction. The length of the ground nail is 2 / 3 - 1 of the length of the pin.

7. The mine safety monitoring device according to claim 6, characterized in that, The mine safety monitoring device also includes: A fixing component includes a base plate and a guide post. The base plate is located below the outer shell. The base plate has a first through hole and a second through hole respectively corresponding to the positions of the ejector pin and the ground nail. The guide post is located between the base plate and the outer shell along the first direction. One end of the guide post is fixedly connected to the base plate, and the other end extends into the interior of the outer shell. The outer shell can slide along the axial direction of the guide post to move closer to or away from the base plate.

8. The mine safety monitoring device according to claim 7, characterized in that, The fixing assembly further includes a second transmission gear and a rack. The guide post has teeth on one side facing the rack. The rack is disposed inside the housing along the first direction and is located on the opposite side of the guide post. A mounting position is defined between the rack and the guide post. The second transmission gear is rotatably disposed in the mounting position, and the teeth of the second transmission gear mesh with the teeth of the guide post and the teeth of the rack.

9. The mine safety monitoring device according to claim 8, characterized in that, The fixing assembly also includes a handle and two bearing seats, which are respectively located on the front and rear sides of the mounting position, and the second transmission gear is located between the two bearing seats; wherein, the bearing seat near the inner side of the housing is provided with a positioning hole; The handle includes a horizontal bar and vertical bars connected to both ends of the horizontal bar. The horizontal bar extends in a third direction and protrudes outside the housing. The vertical bar passes through the housing from the outside of the housing, directly opposite the positioning hole. The vertical bar and the insertion hole of the housing are in a sliding fit. Specifically, when the horizontal bar is pulled inward along the second direction, the vertical bar extends from the positioning hole into the tooth hole of the second transmission gear to lock the second transmission gear; when the horizontal bar is pulled outward along the second direction, the vertical bar exits from the tooth hole of the second transmission gear to release the second transmission gear.

10. The mine safety monitoring device according to claim 9, characterized in that, The fixing assembly also includes a locking block and a spring. The locking block is sleeved on the vertical rod and located on the outside of the bearing seat. The spring is sleeved on the vertical rod and located between the locking block and the inner side of the housing.

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