Coal mine underground water level change monitoring device

Abstract

The invention discloses a coal mine underground water level change monitoring device which comprises a workbench, a floating ring installed on the outer side of the workbench and a measuring mechanism arranged in the middle of the workbench and used for measuring the depth of the coal mine underground water level and further comprises a disconnecting mechanism arranged on one side of a monitoring mechanism and used for controlling a detection mechanism to ascend and descend. The forward and reverse rotation motor clockwise rotates to drive the rack to ascend so as to drive the measuring rod to ascend, and similarly, the forward and reverse rotation motor anticlockwise rotates to drive the rack to descend so as to drive the measuring rod to descend, so that the coal mine underground water level change monitoring device can perform multi-depth detection on the coal mine underground water level in the coal mine underground water level change monitoring process; the overall condition of the coal mine underground water level is obtained, and the functionality of the coal mine underground water level change monitoring device is enriched.

Description

Technical Field

[0001] This invention relates to the field of groundwater level fluctuation monitoring technology in coal mines, and in particular to a groundwater level fluctuation monitoring device for coal mines. Background Art

[0002] Coal mine groundwater level monitoring is a technical system that uses a high-precision sensor network (such as pressure level gauges, ultrasonic probes, or borehole monitoring devices) combined with an automated data acquisition and remote transmission system to dynamically track the water level in the mine and surrounding aquifers in real time. Its core objective is to provide early warning of water inrush accidents (such as water accumulation in old goaf areas or fault-induced water inflow), while simultaneously assessing the disturbance of mining activities to the groundwater system, providing data support for water hazard prevention and optimization of drainage plans. This system is typically integrated into a coal mine safety monitoring platform, can set thresholds to trigger alarms, and assists in analyzing the correlation between water level changes and factors such as geological structure and mining progress. It is a critical infrastructure for ensuring the safety of underground operations.

[0003] Furthermore, long-term water level monitoring data can reveal the impact of mining on regional groundwater balance, serving ecological protection and water resource management. By monitoring the water level fluctuations of aquifers in the roof and floor of the mining face, the development degree of water-conducting fracture zones can be assessed; while data from observation wells outside the mining area are used to analyze the range of groundwater funnels, guiding mine water reuse or grouting and water-blocking projects. With the development of Internet of Things (IoT) technology, modern monitoring systems are evolving towards multi-parameter fusion (water level, water temperature, water quality), intelligent early warning (water hazard prediction based on machine learning), and three-dimensional visualization, further improving coal mine water hazard prevention capabilities and green mining levels.

[0004] In the prior art, Chinese utility model patent CN213812481U discloses a waterproof groundwater level monitoring device, relating to the field of groundwater level monitoring technology. To address the issue that existing groundwater level monitoring devices need to be submerged in water for extended periods, it is necessary to enhance their waterproofness. The groundwater level monitoring device has a groundwater monitoring well installed below its main body. Inside the groundwater monitoring well is a pressure gauge, with a stainless steel casing mounted on its outer wall. A cable reel is installed at the upper end of the pressure gauge, and the outer wall of the cable reel is covered with a high-polymer waterproof composite fabric.

[0005] The problem compared with the existing technology is that the above-mentioned waterproof groundwater level monitoring device cannot perform multi-depth detection of the groundwater level in coal mines to obtain the overall situation of the groundwater level during the monitoring of groundwater level changes, which means that the monitoring functionality of the waterproof groundwater level monitoring device needs to be improved.

[0006] Therefore, there is an urgent need for a monitoring device for changes in groundwater levels in coal mines. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a coal mine groundwater level fluctuation monitoring device.

[0008] The technical problem solved by this invention is achieved through the following technical solution: a coal mine groundwater level fluctuation monitoring device, comprising a workbench, a floating ring installed on the outside of the workbench, and a measuring mechanism set in the middle of the workbench for measuring the depth of the coal mine groundwater level, and further comprising a disconnecting mechanism set on one side of the monitoring mechanism for controlling the lifting and lowering of the monitoring mechanism, the measuring mechanism comprising a measuring rod slidably connected to the middle of the workbench, the measuring rod having a rack on its outer wall, a bracket fixedly installed above the workbench, a rotating shaft rotatably connected to one end of the bracket, a drive gear fixedly installed on the outside of the rotating shaft, a top rod fixedly installed on one side of the bracket, and a forward and reverse motor fixedly installed at one end of the top rod.

[0009] As a further embodiment of the present invention: the disconnection mechanism includes a driven plate, which is fixed to one end of a rotating shaft by bolts. A drive bevel gear is fixedly installed on the rotating end of the forward and reverse motor. A driven bevel gear is provided on the outer side of the drive bevel gear. A pressing electric push rod is fixedly installed at the middle position of the driven bevel gear. A drive plate is fixedly installed on the extended end of the pressing electric push rod.

[0010] As a further embodiment of the present invention: a monitoring mechanism is provided above the workbench for monitoring changes in the groundwater level of the coal mine. The monitoring mechanism includes a track, which is fixed to the top of the workbench by bolts. A slider is slidably connected to the inner wall of the track. A reflector is fixedly installed above the slider. A top plate is fixedly installed above the track. A laser rangefinder is fixedly installed in the middle of the top plate.

[0011] As a further embodiment of the present invention: a limiting mechanism is provided on one side of the measuring rod to limit the measuring direction of the measuring rod. The limiting mechanism includes a square tube, which is fixed to one end of the slider by bolts. A helical spring is fixedly installed inside the square tube. A side-shifting rod is fixedly installed at the extended end of the helical spring. A lifting arm is fixedly installed at one end of the side-shifting rod. A plurality of triangular blocks A are evenly arranged at one end of the lifting arm. A plurality of triangular blocks B are evenly arranged at the middle position of the measuring rod.

[0012] As a further embodiment of the present invention: the two ends of the measuring rod are provided with a snap-fit ​​mechanism for fixing and connecting multiple measuring rods. The snap-fit ​​mechanism includes a cavity, which is cut at one end of the measuring rod. A plug arm is fixedly installed at the other end of the measuring rod. The two ends of the cavity are provided with slots. A compression spring is fixedly installed at the middle position of the plug arm. The two ends of the compression spring are fixedly installed with blocks, and the blocks are clearance-fitted with the slots.

[0013] As a further embodiment of the present invention: a power supply mechanism is provided above the workbench for supplying energy to the coal mine groundwater level change monitoring device. The power supply mechanism includes a mounting frame, which is fixed to the top of the workbench by bolts. A photovoltaic panel is fixedly installed above the mounting frame. A storage battery is fixedly installed on one side of the workbench. An inverter is fixedly installed above the storage battery. A controller is fixedly installed on one side of the inverter.

[0014] As a further embodiment of the present invention: the controller is electrically connected to the forward and reverse motor, the extrusion electric push rod, the laser rangefinder, the photovoltaic panel, the storage battery, and the inverter.

[0015] As a further embodiment of the present invention: a protective shell is fixedly installed on the outside of the forward and reverse motor, and a limit frame is slidably connected to the outside of the measuring rod.

[0016] As a further embodiment of the present invention: friction plates are fixedly installed on the inner walls of both the driven plate and the driving plate.

[0017] As a further aspect of the present invention, a clearance hole is provided on one side of the photovoltaic panel.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The forward and reverse motor drives the drive bevel gear to rotate. The electric push rod squeezes the drive plate to move laterally and press against the driven plate. The friction plate increases the friction between the driven plate and the drive plate, which in turn causes the forward and reverse motor to drive the drive gear to rotate. The rack meshes with the drive gear. The forward and reverse motor rotates clockwise, causing the rack to rise, which in turn causes the measuring rod to rise. Similarly, the forward and reverse motor rotates counterclockwise, causing the rack to fall, which in turn causes the measuring rod to fall. This allows the coal mine groundwater level change monitoring device to perform multi-depth detection of the coal mine groundwater level during the monitoring process, obtain the overall situation of the coal mine groundwater level, and enrich the functionality of the coal mine groundwater level change monitoring device. 2. By emitting a laser through a laser rangefinder, the laser is reflected by a reflector, thereby detecting the position of the slider sliding along the track. This enables the coal mine groundwater level change monitoring device to statistically analyze the changes in the coal mine groundwater level, thus improving the intelligence level of the coal mine groundwater level change monitoring device. 3. By pressing the side-shifting rod with a helical spring, the lifting arm drives the slider to rise and fall through the side-shifting rod, thereby achieving synchronous rising and falling of the measuring rod and the slider. The plug-in arm and the cavity are fitted with a gap, and the compression spring presses the locking blocks at both ends. The locking blocks are inserted into the slots, realizing the quick connection of multiple measuring rods. Similarly, pressing the locking blocks to press the compression spring can disengage multiple measuring rods, thereby enabling the quick assembly and disassembly of multiple measuring rods, further expanding the monitoring range of the coal mine groundwater level change monitoring device. 4. By pressing the side-shifting rod with a helical spring, the lifting arm drives the slider to rise and fall through the side-shifting rod, thereby achieving synchronous rising and falling of the measuring rod and the slider. The plug-in arm and the cavity are fitted with a gap, and the compression spring presses the locking blocks at both ends. The locking blocks are engaged with the slots, realizing the quick connection of multiple measuring rods. Similarly, pressing the locking blocks to press the compression spring can disengage multiple measuring rods, thereby enabling the quick assembly and disassembly of multiple measuring rods, further expanding the monitoring range of the coal mine groundwater level change monitoring device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Legend: Figure 1 A side view structural schematic diagram provided according to an embodiment of the present invention is shown; Figure 2 A top sectional view of the structure provided according to an embodiment of the present invention is shown; Figure 3 The present invention provides an embodiment of the invention. Figure 2 A schematic diagram of the partially enlarged structure at center A; Figure 4 A schematic diagram of the front sectional view structure provided according to an embodiment of the present invention is shown; Figure 5 The present invention provides an embodiment of the invention. Figure 4 A magnified schematic diagram of the structure at point B in the middle; Figure 6 The present invention provides an embodiment of the invention. Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 7 The present invention provides an embodiment of the invention. Figure 4 A magnified schematic diagram of the structure at point D in the middle; Figure 8 The present invention provides an embodiment of the invention. Figure 4 A magnified schematic diagram of the structure at point E in the middle.

[0021] 100. Workbench; 200. Floating ring; 101. Measuring rod; 102. Rack; 103. Bracket; 104. Rotating shaft; 105. Drive gear; 106. Push rod; 107. Forward and reverse motor; 110. Protective housing; 120. Limiting bracket; 201. Driven plate; 202. Drive bevel gear; 203. Driven bevel gear; 204. Extrusion electric actuator; 205. Drive plate; 210. Friction plate; 301. Track; 302. Slider; 303. Reflector; 304. Top plate; 305. Laser rangefinder; 401. Square tube; 402. Helical spring; 403. Side shift rod; 404. Lifting arm; 405. Triangular block A; 406. Triangular block B; 501. Cavity; 502. Slot; 503. Connecting arm; 504. Compression spring; 505. Locking block; 601. Mounting bracket; 602. Photovoltaic panel; 603. Battery; 604. Inverter; 605. Controller; 610. Clearance hole. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0025] Example 1: As Figure 1-8 As shown, a coal mine groundwater level fluctuation monitoring device includes a workbench 100, a floating ring 200 installed on the outside of the workbench 100, and a measuring mechanism located in the middle of the workbench 100 for measuring the depth of the coal mine groundwater level. It also includes a disconnecting mechanism located on one side of the monitoring mechanism for controlling its lifting and lowering. The measuring mechanism includes a measuring rod 101, which is slidably connected to the middle of the workbench 100. A limit frame 120 is slidably connected to the outside of the measuring rod 101, limiting the lifting and lowering trajectory of the measuring rod 101. A rack 102 is welded to the outer wall of the measuring rod 101. The workbench 100... A bracket 103 is bolted to the top, and a rotating shaft 104 is rotatably connected to one end of the bracket 103. A drive gear 105 is bolted to the outside of the rotating shaft 104, and a rack 102 meshes with the drive gear 105. A push rod 106 is bolted to one side of the bracket 103, and a forward / reverse motor 107 is bolted to one end of the push rod 106. The forward / reverse motor 107 drives the drive gear 105 to rotate. A protective shell 110 is bolted to the outside of the forward / reverse motor 107 to seal it. The disconnection mechanism includes a driven plate 201, which is bolted to the rotating shaft 104. At one end, the rotating end of the reversible motor 107 is bolted to a drive bevel gear 202, which rotates. The motor drives the drive bevel gear 202. A driven bevel gear 203 meshes with the outer side of the drive bevel gear 202, causing the driven bevel gear 203 to rotate. A pressing electric push rod 204 is bolted to the middle of the driven bevel gear 203. A drive plate 205 is bolted to the extended end of the pressing electric push rod 204. The pressing electric push rod 204 causes the drive plate 205 to move laterally and press against the driven plate 201. Friction plates 210 are bolted to the inner walls of both the driven plate 201 and the drive plate 205. The friction between the driven plate 201 and the drive plate 205 is increased. A monitoring mechanism is provided above the workbench 100 to monitor changes in the groundwater level of the coal mine. The monitoring mechanism includes a track 301, which is fixed to the top of the workbench 100 by bolts. A slider 302 is slidably connected to the inner wall of the track 301 and slides along the track 301. A reflector 303 is fixed above the slider 302 by bolts. A top plate 304 is fixed above the track 301 by bolts. A laser rangefinder 305 is fixed in the middle of the top plate 304 by bolts. The laser rangefinder 305 emits a laser, which is reflected by the reflector 303.

[0026] In this embodiment, the reversible motor 107 drives the drive bevel gear 202 to rotate. The electric push rod 204 causes the drive plate 205 to move laterally and press against the driven plate 201. The friction plate 210 increases the friction between the driven plate 201 and the drive plate 205, thereby causing the reversible motor 107 to drive the drive gear 105 to rotate. The rack 102 meshes with the drive gear 105. Clockwise rotation of the reversible motor 107 causes the rack 102 to rise, which in turn causes the measuring rod 101 to rise. Similarly, counterclockwise rotation of the reversible motor 107 causes the rack... The descent of 102, in turn, causes the measuring rod 101 to descend, enabling the coal mine groundwater level change monitoring device to perform multi-depth detection of the groundwater level during the monitoring process, obtaining an overall picture of the groundwater level and enriching the functionality of the device. Furthermore, the laser rangefinder 305 emits a laser beam, which is reflected by the reflector 303, thereby detecting the position of the slider 302 sliding along the track 301. This allows the coal mine groundwater level change monitoring device to statistically analyze the changes in the groundwater level, improving its intelligence level.

[0027] Example 2: Figure 1-8As shown, a coal mine groundwater level fluctuation monitoring device includes a limiting mechanism on one side of the measuring rod 101 to limit the measuring direction of the measuring rod 101. The limiting mechanism includes a square tube 401, which is bolted to one end of a slider 302. A helical spring 402 is bolted inside the square tube 401, compressing a lateral displacement rod 403. The extended end of the helical spring 402 is bolted to the lateral displacement rod 403. A lifting arm 404 is bolted to one end of the lateral displacement rod 403. The lifting arm 404 drives the slider 302 to rise and fall via the lateral displacement rod 403, thereby achieving synchronous rising and falling of the measuring rod 101 and the slider 302. Multiple triangular blocks A405 are evenly welded to one end of the measuring rod 101, and multiple triangular blocks B406 are evenly welded to the middle position of the measuring rod 101. Triangular blocks A405 and B406 are oriented in opposite directions and slide against each other. The measuring rod 101 has a locking mechanism at both ends for fixing multiple measuring rods 101 together. The locking mechanism includes a cavity 501 cut into one end of the measuring rod 101. A plug arm 503 is bolted to the other end of the measuring rod 101, and the plug arm 503 is clearance-fitted with the cavity 501. The cavity 501 has slots 502 cut into both ends. A compression spring 504 is bolted to the middle position of the plug arm 503. Both ends of the device are fixed with locking blocks 505 by bolts. A compression spring 504 compresses the locking blocks 505 at both ends. The locking blocks 505 are in clearance fit with the slots 502, allowing for quick connection of multiple measuring rods 101. Similarly, pressing the locking blocks 505 presses the compression spring 504, disengaging multiple measuring rods 101. A power supply mechanism is provided above the workbench 100 to supply energy to the coal mine groundwater level fluctuation monitoring device. The power supply mechanism includes a mounting frame 601, which is fixed to the top of the workbench 100 by bolts. A photovoltaic panel 602 is fixed above the mounting frame 601 by bolts, and the photovoltaic panel 602 transmits solar energy through the photovoltaic effect. Sunlight is directly converted into direct current (DC). A clearance hole 610 is cut into one side of the photovoltaic panel 602 to prevent the measuring rod 101 from colliding with the photovoltaic panel 602. A storage battery 603 is bolted to one side of the workbench 100. The storage battery 603 solves the intermittent problem of photovoltaic power generation and provides power at night. An inverter 604 is bolted above the storage battery 603. The inverter 604 converts the DC power generated by the photovoltaic module into AC power. A controller 605 is bolted to one side of the inverter 604. The controller 605 is electrically connected to the forward / reverse motor 107, the electric push rod 204, the laser rangefinder 305, the photovoltaic panel 602, the storage battery 603, and the inverter 604.The controller 605 controls the entire operation of the coal mine groundwater level fluctuation monitoring device.

[0028] In this embodiment, the helical spring 402 compresses the side-shifting rod 403, and the lifting arm 404 drives the slider 302 to rise and fall through the side-shifting rod 403, thereby achieving synchronous rising and falling of the measuring rod 101 and the slider 302. The plug arm 503 is fitted with the cavity 501 with a clearance. The compression spring 504 compresses the locking blocks 505 at both ends, and the locking blocks 505 are engaged in the locking slots 502, realizing the quick connection of multiple measuring rods 101. Similarly, pressing the locking blocks 505 presses the compression spring 504, which can disengage multiple measuring rods 101, thereby enabling the multiple measuring rods 101 to be quickly disassembled. The device further expands the monitoring range of the coal mine groundwater level change monitoring device; the photovoltaic panel 602 directly converts sunlight into direct current through the photovoltaic effect; the battery 603 solves the problem of intermittent photovoltaic power generation and realizes nighttime power supply; the inverter 604 converts the direct current generated by the photovoltaic module into alternating current; and the controller 605 controls the entire working process of the coal mine groundwater level change monitoring device, thereby providing energy to the coal mine groundwater level change monitoring device, so that the coal mine groundwater level change monitoring device does not need an external power source, ensuring the continuous operation of the coal mine groundwater level change monitoring device.

[0029] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0030] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0031] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be modified within the scope of the inventive concept described herein by means of the foregoing teachings or the technology or knowledge in related fields.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A groundwater level fluctuation monitoring device for coal mines, characterized in that, The device includes a workbench (100), a floating ring (200) installed on the outside of the workbench (100), and a measuring mechanism set in the middle of the workbench (100) for measuring the depth of groundwater level in coal mines. It also includes a disconnecting mechanism set on one side of the monitoring mechanism for controlling the lifting and lowering of the monitoring mechanism. The measuring mechanism includes a measuring rod (101) which is slidably connected to the middle of the workbench (100). A rack (102) is provided on the outer wall of the measuring rod (101). A bracket (103) is fixedly installed on the top of the workbench (100). A rotating shaft (104) is rotatably connected to one end of the bracket (103). A drive gear (105) is fixedly installed on the outside of the rotating shaft (104). A top rod (106) is fixedly installed on one side of the bracket (103). A forward and reverse motor (107) is fixedly installed on one end of the top rod (106).

2. The groundwater level fluctuation monitoring device for coal mines according to claim 1, characterized in that, The disconnection mechanism includes a driven plate (201), which is fixed to one end of a rotating shaft (104) by bolts. A drive bevel gear (202) is fixedly installed on the rotating end of the forward and reverse motor (107). A driven bevel gear (203) is provided on the outer side of the drive bevel gear (202). A compression electric push rod (204) is fixedly installed at the middle position of the driven bevel gear (203). A drive plate (205) is fixedly installed on the extended end of the compression electric push rod (204).

3. The groundwater level fluctuation monitoring device for coal mines according to claim 2, characterized in that, A monitoring mechanism is provided above the workbench (100) for monitoring changes in the groundwater level of the coal mine. The monitoring mechanism includes a track (301), which is fixed above the workbench (100) by bolts. A slider (302) is slidably connected to the inner wall of the track (301). A reflector (303) is fixedly installed above the slider (302). A top plate (304) is fixedly installed above the track (301). A laser rangefinder (305) is fixedly installed in the middle of the top plate (304).

4. The groundwater level fluctuation monitoring device for coal mines according to claim 3, characterized in that, A limiting mechanism is provided on one side of the measuring rod (101) to limit the measuring direction of the measuring rod (101). The limiting mechanism includes a square tube (401), which is fixed to one end of the slider (302) by bolts. A helical spring (402) is fixedly installed inside the square tube (401). A side-shifting rod (403) is fixedly installed at the extended end of the helical spring (402). A lifting arm (404) is fixedly installed at one end of the side-shifting rod (403). A plurality of triangular blocks A (405) are evenly arranged at one end of the lifting arm (404). A plurality of triangular blocks B (406) are evenly arranged at the middle position of the measuring rod (101).

5. The groundwater level fluctuation monitoring device for coal mines according to claim 1, characterized in that, The measuring rod (101) is provided with a snap-fit ​​mechanism at both ends for fixing and connecting multiple measuring rods (101). The snap-fit ​​mechanism includes a cavity (501) cut at one end of the measuring rod (101). A plug arm (503) is fixedly installed at the other end of the measuring rod (101). The cavity (501) is provided with a slot (502) at both ends. A compression spring (504) is fixedly installed at the middle position of the plug arm (503). A locking block (505) is fixedly installed at both ends of the compression spring (504). The locking block (505) is clearance-fitted with the slot (502).

6. The groundwater level fluctuation monitoring device for coal mines according to claim 3, characterized in that, A power supply mechanism is provided above the workbench (100) for supplying energy to the coal mine groundwater level change monitoring device. The power supply mechanism includes a mounting frame (601), which is fixed to the top of the workbench (100) by bolts. A photovoltaic panel (602) is fixedly installed above the mounting frame (601). A storage battery (603) is fixedly installed on one side of the workbench (100). An inverter (604) is fixedly installed above the storage battery (603). A controller (605) is fixedly installed on one side of the inverter (604).

7. A coal mine groundwater level fluctuation monitoring device according to claim 6, characterized in that, The controller (605) is electrically connected to the forward and reverse motor (107), the extrusion electric push rod (204), the laser rangefinder (305), the photovoltaic panel (602), the storage battery (603), and the inverter (604).

8. A coal mine groundwater level fluctuation monitoring device according to claim 1, characterized in that, A protective shell (110) is fixedly installed on the outside of the forward and reverse motor (107), and a limit frame (120) is slidably connected to the outside of the measuring rod (101).

9. A coal mine groundwater level fluctuation monitoring device according to claim 2, characterized in that, Friction plates (210) are fixedly installed on the inner walls of both the driven plate (201) and the driving plate (205).

10. A coal mine groundwater level fluctuation monitoring device according to claim 6, characterized in that, The photovoltaic panel (602) has a clearance hole (610) on one side.

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