A crack monitoring and early warning device for metal mine subsidence areas

Abstract

The invention discloses a fissure monitoring and early warning device for a metal mine subsidence area, and relates to the technical field of monitoring and early warning, comprising: a protective cover, wherein a support leg is fixedly installed at the bottom of the protective cover, a motor is fixedly installed at the bottom of the protective cover, and a spiral rod is fixedly installed at the output end of the motor; an auxiliary support device, wherein the auxiliary support device is arranged inside the protective cover, and the auxiliary support device comprises a threaded plate, a slide rail, a slider, a support rod, a support plate, a sensor, a sealing protection top, a pull rope, a sliding block, a support seat, a rotating plate, a connecting rope and an auxiliary support frame, wherein the threaded plate moves upward to drive the support rod to move upward, the support rod moves upward to drive the support plate to move upward, and the support plate moves upward to drive the sensor to move upward, and the threaded plate is threadedly installed on the circumferential surface of the spiral rod to prevent the device from rising too high and being affected by external forces such as wind, thereby causing the device to collapse or deviate, and affecting the stability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of monitoring and early warning, and in particular to a crack monitoring and early warning device for a metal mine subsidence area. Background Art

[0002] A crack monitoring and early warning device for a metal mine subsidence area can monitor the displacement and deformation of the cracks, record the movement amount and direction of the cracks through high-precision sensors, and help judge the stability of the mine.

[0003] The patent with patent announcement number CN111780700B relates to a real-time monitoring and early warning device for geological disasters, and relates to the technical field of monitoring devices; it includes a shell, an upper cover, an upper cover mounting mechanism, a sensor, an energy supply mechanism, and a fixing mechanism; the upper cover mounting mechanism includes a edging fixed to the upper edge of the shell for wrapping the outer edge of the upper cover, a clamping head inserted into the inner edge of the edging and slidably connected to the edging, a slide groove located at the upper end of the shell, a connecting rod slidably connected in the slide groove, a control rod connected to the lower end of the connecting rod, a spring for applying a force toward one side of the axis of the upper cover to the control rod, a ring-shaped clamping groove located at the outer edge of the upper cover for cooperating with the clamping head, a guide slope located on the control rod, and an extrusion sleeve sleeved on the shell for squeezing the guide slope upward to achieve the disengagement of the clamping head and the clamping groove; the upper end of the connecting rod is fixed to the clamping head, and the upper cover is circular. When installing, there is no need to pay attention to the installation angle of the upper cover. After the upper cover is embedded in the edging, the clamping head is then embedded in the slot to complete the installation.

[0004] In the above patent, the upper cover is circular by fixing the upper end of the connecting rod with the clamp. When installing, there is no need to pay attention to the installation angle of the upper cover. After the upper cover is embedded in the edging, the clamp is embedded in the slot to complete the installation. However, during use, the sensor height is not easy to adjust. At the same time, it is not easy to install the equipment stably in areas with complex terrain, which may affect the stability of sensor monitoring. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fissure monitoring and early warning device for a metal mine subsidence area, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a metal mine subsidence area fissure monitoring and early warning device, comprising: a protective cover, a support leg is fixedly installed at the bottom of the protective cover, a motor is fixedly installed at the bottom of the protective cover, and a spiral rod is fixedly installed at the output end of the motor; an auxiliary support device, the auxiliary support device is arranged inside the protective cover, and the auxiliary support device includes a threaded plate, a slide rail, a slider, a support rod, a support plate, a sensor, a sealing protection top, a pull rope, a sliding block, a support seat, a rotating plate, a connecting rope and an auxiliary support frame, the threaded plate moves upward to drive the support rod to move upward, the support rod moves upward to drive the support plate to move upward, the support plate moves upward to drive the sensor to move upward, and the position of the sensor can be adjusted by moving the sensor upward, the threaded plate is threadedly installed on the circumferential surface of the spiral rod, the slide rail is fixedly installed on the inner wall of the protective cover, and the slider is fixedly installed The sliding block is slidably mounted on the surface of the support leg, and one end of the pull rope is fixedly mounted on the bottom of the threaded plate, and the other end of the pull rope is fixedly mounted on the top of the sliding block. The support seat is fixedly mounted on the surface of the support leg, and the rotating plate is rotatably mounted on the inner wall of the support seat, and the auxiliary support frame is fixedly mounted on the circumferential surface of the rotating plate, and one end of the connecting rope is fixedly mounted on a side of the sliding block close to the support seat, and the other end of the connecting rope is fixedly mounted on the top of the rotating plate. The upward movement of the connecting rope will drive the rotating plate to rotate downward, and the downward rotation of the rotating plate will drive the auxiliary support frame to rotate downward, and auxiliary support is performed by the downward rotation of the auxiliary support frame.

[0007] According to the above technical solution, a No. 1 spring is arranged between the sliding block and the supporting leg, and the sliding block is driven to reset by the No. 1 spring. A No. 1 torsion spring is arranged between the rotating plate and the supporting seat, and the rotating plate is driven to reset by the No. 1 torsion spring.

[0008] According to the above technical solution, a lubricating device for lubricating the equipment is provided on the support plate, a supporting device is provided on the lubricating device, the lubricating device includes an oil storage tank, a connecting pipe and a brush, the upward movement of the threaded plate will drive the oil storage tank to move upward, the upward movement of the oil storage tank will drive the connecting pipe to move upward, the upward movement of the connecting pipe will drive the brush to move upward, the oil storage tank is fixedly installed on the top of the threaded plate, an oil storage groove is provided at the bottom of the inner wall of the oil storage tank, the connecting pipe is fixedly installed on the circumferential surface of the oil storage tank, and the brush is fixedly installed on the end of the connecting pipe away from the oil storage tank.

[0009] According to the above technical solution, a trapezoidal plate is fixedly installed on the inner wall of the protective cover, a fixed plate is fixedly installed on the circumferential surface of the oil storage tank, a sliding rod is slidably penetrated through the surface of the oil storage tank, the sliding rod is slidably installed on the top of the fixed plate, a sealing ring is fixedly installed on the inner wall of the oil storage tank, a sealing rod is slidably installed on the inner wall of the sealing ring, an upper oil inlet and a lower oil outlet are provided on the surface of the sealing rod, a trapezoidal block is fixedly installed on the top of the sealing rod, the downward movement of the trapezoidal block will drive the sealing rod to move downward, the downward movement of the sealing rod will block the oil storage tank, and at the same time, the lubricating oil will enter the interior of the sealing rod through the upper oil inlet, and at the same time, the downward movement of the sealing rod will cause the lower oil outlet to separate from the sealing ring.

[0010] According to the above technical solution, a No. 2 spring is arranged between the oil storage tank and the sliding rod, and the No. 2 spring drives the sliding rod to reset. The sliding rod contacts the surface of the trapezoidal block, and the lower oil outlet contacts the inner wall of the sealing ring, and the lower oil outlet is sealed by the sealing ring.

[0011] According to the above technical solution, the supporting device includes an L-shaped rod, a pulley, a fixed frame, a rotating plate and a supporting gasket. The sliding rod moves in a direction close to the oil storage tank, driving the L-shaped rod to move in a direction close to the oil storage tank. The movement of the L-shaped rod in a direction close to the oil storage tank will drive the pulley to move in a direction close to the oil storage tank. The L-shaped rod is fixedly installed on the top of the sliding rod, and the pulley is rotatably installed on an end of the L-shaped rod away from the sliding rod. The fixed frame is fixedly installed on the top of the supporting plate, the rotating plate is rotatably installed on the inner wall of the fixed frame, and the supporting gasket is fixedly installed on the top of the rotating plate.

[0012] According to the above technical solution, a push plate is fixedly installed on the circumferential surface of the rotating plate, a ring is slidably installed at the sensor shaft, and a slot is opened on the top of the support plate. The ring moves downward and enters the slot, and the ring is limited by the slot.

[0013] According to the above technical solution, the pulley is in contact with the surface of the rotating plate, a No. 2 torsion spring is arranged between the rotating plate and the fixed frame, and the rotating plate is driven to reset by the No. 2 torsion spring, the push plate is in contact with the surface of the ring, and a No. 3 spring is arranged between the sensor and the ring, and the No. 3 spring is used to drive the ring to reset.

[0014] The present invention provides a crack monitoring and early warning device for a metal mine subsidence area. It has the following beneficial effects:

[0015] (1) The invention can adjust the position of the sensor by moving the sensor upward to increase the scope of use. At the same time, the upward movement of the sensor will drive the sealing protection top to move upward. The upward movement of the sealing protection top will separate from the protective cover, allowing the sensor to rise to work, thereby preventing the sensor from being exposed to the air for a long time when not in use, causing equipment aging and shortening its service life. The auxiliary support frame is rotated downward for auxiliary support to prevent the device from rising too high and being affected by external forces such as wind, causing the device to collapse or shift, thereby affecting the stability of the device.

[0016] (2) The invention uses a brush that moves upward to coordinate with the rotation of the spiral rod, so that the lubricating oil can be evenly applied to the spiral rod, thereby preventing the equipment from rusting and aging due to long-term non-use, which affects the normal use of the equipment. At the same time, the lubricating oil will enter the interior of the sealing rod through the upper oil inlet. At the same time, the downward movement of the sealing rod will cause the lower oil outlet to separate from the sealing ring, allowing the lubricating liquid in the oil storage tank to be applied to the spiral rod through the connecting pipe and the brush. Quantitative lubrication can save resources and prevent waste.

[0017] (3) In this invention, the pulley moves toward the oil tank, which pushes the rotating plate to rotate upward. The upward rotation of the rotating plate drives the supporting gasket to rotate upward. The upward rotation of the supporting gasket supports the sensor, thereby improving the stability of the sensor and preventing vibration or shaking from affecting the normal monitoring of the equipment. At the same time, the ring moves downward and enters the slot. The slot limits the ring to prevent the sensor from rotating during monitoring, causing the monitoring position to shift and affecting the monitoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the protective cover of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the auxiliary support device of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the oil storage tank of the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the support plate of the present invention;

[0024] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of part A.

[0025] In the figure: 1. protective cover; 2. supporting leg; 3. motor; 4. spiral rod; 5. threaded plate; 6. slide rail; 7. slider; 8. support rod; 9. support plate; 10. sensor; 11. sealing protection top; 12. pull rope; 13. sliding block; 14. support seat; 15. rotating plate; 16. connecting rope; 17. auxiliary support frame; 181. oil storage tank; 182. connecting pipe; 183. brush; 184. trapezoidal plate; 185. fixed plate; 186. sliding rod; 187. sealing ring; 188. sealing rod; 189. trapezoidal block; 191. L-shaped rod; 192. pulley; 193. fixed frame; 194. rotating plate; 195. supporting gasket; 196. push plate; 197. ring; 198. slot. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 3, one embodiment of the present invention is: a metal mine subsidence area fissure monitoring and early warning device, comprising: a protective cover 1, a support leg 2 is fixedly installed at the bottom of the protective cover 1, a motor 3 is fixedly installed at the bottom of the protective cover 1, and a spiral rod 4 is fixedly installed at the output end of the motor 3; an auxiliary support device, the auxiliary support device is arranged inside the protective cover 1, the auxiliary support device includes a threaded plate 5, a slide rail 6, a slider 7, a support rod 8, a support plate 9, a sensor 10, a sealing protection top 11, a pull rope 12, a sliding block 13, a support seat 14, a rotating plate 15, a connecting rope 16 and an auxiliary support frame 17, to prevent the sensor 10 from being exposed to the air for a long time when not in use, resulting in aging of the equipment and a decrease in service life, the threaded plate 5 is threadedly installed on the circumferential surface of the spiral rod 4, the slide rail 6 is fixedly installed on the inner wall of the protective cover 1, the slider 7 is fixedly installed on the circumferential surface of the threaded plate 5, and the slider 7 slides It is dynamically installed on the inner wall of the slide rail 6, the support rod 8 is fixedly installed on the top of the threaded plate 5, the support plate 9 is fixedly installed on the top of the support rod 8, the sensor 10 is rotatably installed on the top of the support plate 9, the sealing protection top 11 is fixedly installed on the top of the sensor 10, the sliding block 13 is slidably installed on the surface of the support leg 2, one end of the pull rope 12 is fixedly installed on the bottom of the threaded plate 5, the other end of the pull rope 12 is fixedly installed on the top of the sliding block 13, the support seat 14 is fixedly installed on the surface of the support leg 2, the rotating plate 15 is rotatably installed on the inner wall of the support seat 14, the auxiliary support frame 17 is fixedly installed on the circumferential surface of the rotating plate 15, one end of the connecting rope 16 is fixedly installed on a side of the sliding block 13 close to the support seat 14, and the other end of the connecting rope 16 is fixedly installed on the top of the rotating plate 15 to prevent it from rising too high and being affected by external forces such as wind, causing the equipment to collapse or deviate, thereby affecting the stability of the equipment.

[0028] A No. 1 spring is arranged between the sliding block 13 and the supporting leg 2, and the sliding block 13 is reset by the No. 1 spring. A No. 1 torsion spring is arranged between the rotating plate 15 and the supporting seat 14, and the rotating plate 15 is reset by the No. 1 torsion spring.

[0029] When the present embodiment is working, the support legs 2 are supported on the ground, and the motor 3 is started. The rotation of the motor 3 drives the screw rod 4 to rotate, and the rotation of the screw rod 4 drives the threaded plate 5 to move upward. The upward movement of the threaded plate 5 drives the support rod 8 to move upward. The upward movement of the support rod 8 drives the support plate 9 to move upward. The upward movement of the support plate 9 drives the sensor 10 to move upward. The position of the sensor 10 can be adjusted by moving the sensor 10 upward to increase the scope of use. At the same time, the upward movement of the sensor 10 drives the sealing protection top 11 to move upward. The upward movement of the sealing protection top 11 will separate from the protective cover 1, so that the sensor 10 rises and moves upward. The sensor 10 is prevented from being exposed to the air for a long time when not in use, which may cause the equipment to age and reduce its service life. At the same time, the upward movement of the threaded plate 5 will pull the pull rope 12 upward, and the upward movement of the pull rope 12 will pull the sliding block 13 to slide upward. The upward sliding of the sliding block 13 will pull the connecting rope 16 upward, and the upward movement of the connecting rope 16 will drive the rotating plate 15 to rotate downward, and the downward rotation of the rotating plate 15 will drive the auxiliary support frame 17 to rotate downward. The auxiliary support frame 17 is rotated downward to provide auxiliary support to prevent the device from rising too high and being affected by external forces such as wind, which may cause the device to collapse or deviate, thereby affecting the stability of the device.

[0030] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a lubricating device for lubricating the equipment is provided on the support plate 9, and a supporting device is provided on the lubricating device. The lubricating device includes an oil storage tank 181, a connecting pipe 182 and a brush 183. The oil storage tank 181 is fixedly installed on the top of the threaded plate 5, and an oil storage groove is provided at the bottom of the inner wall of the oil storage tank 181. The connecting pipe 182 is fixedly installed on the circumferential surface of the oil storage tank 181, and the brush 183 is fixedly installed on the end of the connecting pipe 182 away from the oil storage tank 181. The brush 183 moves upward to cooperate with the rotation of the spiral rod 4, so that the lubricating oil can be evenly applied to the spiral rod 4 to prevent the equipment from rusting and aging due to long-term non-use, thereby affecting the normal use of the equipment.

[0031] A trapezoidal plate 184 is fixedly installed on the inner wall of the protective cover 1, a fixed plate 185 is fixedly installed on the circumferential surface of the oil storage tank 181, a sliding rod 186 slides through the surface of the oil storage tank 181, and the sliding rod 186 is slidably installed on the top of the fixed plate 185. A sealing ring 187 is fixedly installed on the inner wall of the oil storage tank, and a sealing rod 188 is slidably installed on the inner wall of the sealing ring 187. An upper oil inlet and a lower oil outlet are provided on the surface of the sealing rod 188, and a trapezoidal block 189 is fixedly installed on the top of the sealing rod 188, so that the lubricating liquid inside the oil storage tank is applied to the spiral rod 4 through the connecting pipe 182 and the brush 183. Quantitative lubrication can save resources and prevent waste.

[0032] A No. 2 spring is arranged between the oil storage tank 181 and the sliding rod 186, and the No. 2 spring drives the sliding rod 186 to reset. The sliding rod 186 contacts the surface of the trapezoidal block 189, and the lower oil outlet contacts the inner wall of the sealing ring 187, and the lower oil outlet is sealed by the sealing ring 187.

[0033] The supporting device includes an L-shaped rod 191, a pulley 192, a fixed frame 193, a rotating plate 194 and a supporting gasket 195. The L-shaped rod 191 is fixedly installed on the top of the sliding rod 186, the pulley 192 is rotatably installed on the end of the L-shaped rod 191 away from the sliding rod 186, the fixed frame 193 is fixedly installed on the top of the supporting plate 9, the rotating plate 194 is rotatably installed on the inner wall of the fixed frame 193, and the supporting gasket 195 is fixedly installed on the top of the rotating plate 194. The sensor 10 is supported by rotating the supporting gasket 195 upward, thereby improving the stability of the sensor 10 and preventing vibration or shaking from affecting the normal monitoring of the equipment.

[0034] A push plate 196 is fixedly installed on the circumferential surface of the rotating plate 194, a ring 197 is slidably installed at the rotating shaft of the sensor 10, and a card slot 198 is opened on the top of the support plate 9 to prevent the sensor 10 from rotating during monitoring, causing the monitoring position to shift and affecting the monitoring effect.

[0035] The pulley 192 is in contact with the surface of the rotating plate 194, and a No. 2 torsion spring is arranged between the rotating plate 194 and the fixed frame 193, which drives the rotating plate 194 to reset. The push plate 196 is in contact with the surface of the ring 197, and a No. 3 spring is arranged between the sensor 10 and the ring 197, which drives the ring 197 to reset.

[0036] When the present embodiment is working, the upward movement of the threaded plate 5 will drive the oil storage tank 181 to move upward, the upward movement of the oil storage tank 181 will drive the connecting pipe 182 to move upward, the upward movement of the connecting pipe 182 will drive the brush 183 to move upward, and the upward movement of the brush 183 and the rotation of the spiral rod 4 will make the lubricating oil evenly spread on the spiral rod 4, so as to prevent the equipment from rusting and aging due to long-term non-use, thereby affecting the normal use of the equipment. At the same time, the upward movement of the oil storage tank 181 will drive the sliding rod 186 to move upward, and the sliding rod 186 will contact the trapezoidal plate 184 when it moves upward, and the trapezoidal plate 184 will push the sliding rod 186 Move toward the inside of the oil storage tank 181, the sliding rod 186 moves toward the inside of the oil storage tank 181 and contacts the trapezoidal block 189, the sliding rod 186 pushes the trapezoidal block 189 to move downward, the trapezoidal block 189 moves downward and drives the sealing rod 188 to move downward, the sealing rod 188 moves downward and blocks the oil storage tank, and at the same time, the lubricating oil enters the inside of the sealing rod 188 through the upper oil inlet, and at the same time, the sealing rod 188 moves downward and separates the lower oil outlet from the sealing ring 187, so that the lubricating liquid inside the oil storage tank is smeared onto the spiral rod 4 through the connecting pipe 182 and the brush 183, and quantitative lubrication is used to save resources and prevent waste.

[0037] The movement of sliding rod 186 toward the direction close to oil tank 181 drives L-shaped rod 191 to move toward the direction close to oil tank 181. The movement of L-shaped rod 191 toward the direction close to oil tank 181 drives pulley 192 to move toward the direction close to oil tank 181. The movement of pulley 192 toward the direction close to oil tank 181 pushes rotating plate 194 to rotate upward. The upward rotation of rotating plate 194 drives supporting gasket 195 to rotate upward. The upward rotation of supporting gasket 195 supports sensor 10, improves the stability of sensor 10, and prevents vibration or jitter from affecting normal monitoring of equipment. At the same time, the upward rotation of rotating plate 194 drives push plate 196 to rotate downward. The downward rotation of push plate 196 drives ring 197 to move downward. The downward movement of ring 197 enters slot 198. The slot 198 limits the ring 197 to prevent the sensor 10 from rotating during monitoring, which causes the monitoring position to shift and affects the monitoring effect.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crack monitoring and early warning device for a metal mine subsidence area, characterized in that: include: A protective cover (1), wherein a support leg (2) is fixedly mounted on the bottom of the protective cover (1), a motor (3) is fixedly mounted on the bottom of the protective cover (1), and a spiral rod (4) is fixedly mounted on the output end of the motor (3); An auxiliary support device is arranged inside the protective cover (1), and comprises a threaded plate (5), a slide rail (6), a slider (7), a support rod (8), a support plate (9), a sensor (10), a sealing protection top (11), a pull rope (12), a slide block (13), a support seat (14), a rotating plate (15), a connecting rope (16) and an auxiliary support frame (17), wherein the threaded plate (5) is threadedly mounted on the circumferential surface of the spiral rod (4), the slide rail (6) is fixedly mounted on the inner wall of the protective cover (1), the slider (7) is fixedly mounted on the circumferential surface of the threaded plate (5), the slider (7) is slidably mounted on the inner wall of the slide rail (6), the support rod (8) is fixedly mounted on the top of the threaded plate (5), and the support plate (9) is fixedly mounted on the top of the support rod (8). The sensor (10) is rotatably mounted on the top of the support plate (9), the sealing protection top (11) is fixedly mounted on the top of the sensor (10), the sliding block (13) is slidably mounted on the surface of the support leg (2), one end of the pull rope (12) is fixedly mounted on the bottom of the threaded plate (5), the other end of the pull rope (12) is fixedly mounted on the top of the sliding block (13), the support seat (14) is fixedly mounted on the surface of the support leg (2), the rotating plate (15) is rotatably mounted on the inner wall of the support seat (14), the auxiliary support frame (17) is fixedly mounted on the circumferential surface of the rotating plate (15), one end of the connecting rope (16) is fixedly mounted on a side of the sliding block (13) close to the support seat (14), and the other end of the connecting rope (16) is fixedly mounted on the top of the rotating plate (15); Wherein, a lubrication device for lubricating the equipment is arranged on the support plate (9), and a support device is arranged on the lubrication device.

2. A metal mine subsidence area fissure monitoring and early warning device according to claim 1, characterized in that: A No. 1 spring is provided between the sliding block (13) and the supporting leg (2), and a No. 1 torsion spring is provided between the rotating plate (15) and the supporting seat (14).

3. A metal mine subsidence area fissure monitoring and early warning device according to claim 2, characterized in that: The lubricating device comprises an oil storage tank (181), a connecting pipe (182) and a brush (183); the oil storage tank (181) is fixedly mounted on the top of the threaded plate (5); an oil storage groove is provided at the bottom of the inner wall of the oil storage tank (181); the connecting pipe (182) is fixedly mounted on the circumferential surface of the oil storage tank (181); and the brush (183) is fixedly mounted on an end of the connecting pipe (182) away from the oil storage tank (181).

4. A metal mine subsidence area fissure monitoring and early warning device according to claim 3, characterized in that: A trapezoidal plate (184) is fixedly mounted on the inner wall of the protective cover (1), a fixed plate (185) is fixedly mounted on the circumferential surface of the oil storage tank (181), a sliding rod (186) is slidably penetrated through the surface of the oil storage tank (181), the sliding rod (186) is slidably mounted on the top of the fixed plate (185), a sealing ring (187) is fixedly mounted on the inner wall of the oil storage tank, a sealing rod (188) is slidably mounted on the inner wall of the sealing ring (187), an upper oil inlet and a lower oil outlet are provided on the surface of the sealing rod (188), and a trapezoidal block (189) is fixedly mounted on the top of the sealing rod (188).

5. A metal mine subsidence area fissure monitoring and early warning device according to claim 4, characterized in that: A No. 2 spring is provided between the oil storage tank (181) and the sliding rod (186); the sliding rod (186) contacts the surface of the trapezoidal block (189); and the lower oil outlet contacts the inner wall of the sealing ring (187).

6. A metal mine subsidence area fissure monitoring and early warning device according to claim 5, characterized in that: The support device comprises an L-shaped rod (191), a pulley (192), a fixed frame (193), a rotating plate (194) and a supporting gasket (195); the L-shaped rod (191) is fixedly mounted on the top of the sliding rod (186); the pulley (192) is rotatably mounted on an end of the L-shaped rod (191) away from the sliding rod (186); the fixed frame (193) is fixedly mounted on the top of the supporting plate (9); the rotating plate (194) is rotatably mounted on the inner wall of the fixed frame (193); and the supporting gasket (195) is fixedly mounted on the top of the rotating plate (194).

7. A metal mine subsidence area fissure monitoring and early warning device according to claim 6, characterized in that: A push plate (196) is fixedly mounted on the circumferential surface of the rotating plate (194), a ring (197) is slidably mounted on the rotating shaft of the sensor (10), and a slot (198) is provided on the top of the supporting plate (9).

8. A metal mine subsidence area fissure monitoring and early warning device according to claim 7, characterized in that: The pulley (192) is in surface contact with the rotating plate (194), a No. 2 torsion spring is provided between the rotating plate (194) and the fixed frame (193), the push plate (196) is in surface contact with the circular ring (197), and a No. 3 spring is provided between the sensor (10) and the circular ring (197).

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