Coal mining surface subsidence monitoring system

Abstract

The invention provides a coal mining surface subsidence monitoring system which comprises a fixing seat, a fixing groove is formed in the fixing seat, a fixing pipe is movably installed in the fixing groove through a rotating shaft, and a probe is movably installed at the bottom of the fixing pipe. During use, after the movable seat is lifted upwards, the fixed pipe rotates to enable the protective seat to be located at the bottom of the movable seat, the fixed pipe inclines to make contact with the extrusion plate to form a fulcrum, the fixed pipe inclines to support the movable seat to achieve height adjustment of the monitor, the rotating pipe is rotationally adjusted on the fixed pipe in the later period, and the exposed length of one end of the rotating pipe is adjusted; therefore, the installation height of the movable seat is secondarily adjusted after the protection seat is in contact with the movable seat, the probe at one end of the fixed pipe is downwards in contact with the ground to form multi-point monitoring, and in addition, the fixed pipe is extruded by the movable seat to adjust the inclination angle and adjust the position of a monitoring point at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ground subsidence monitoring equipment, in particular to a coal mining ground subsidence monitoring system. BACKGROUND

[0002] After mining, a goaf is formed in the coal mine, which can cause geological disasters such as deformation of the pillar, rock movement and ground subsidence. Therefore, it is necessary to monitor and early warn the goaf to give early warning and prediction of the mine pressure disaster. The existing monitoring device cannot realize quick installation and fixation of the monitoring instrument and later multi-point monitoring.

[0003] According to the patent document with the existing publication number CN210135908U, a coal mining area ground mining subsidence monitoring device is disclosed, which comprises a base, the base is provided with sliding rails around, the outer surface of the sliding rail is fixedly connected with the base, the middle part of the sliding rail is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with the outer surface of the auxiliary measuring scale, the bottom of the base is fixedly connected with the bottom of the installation barrel, the middle part of the lower surface of the base and the middle part of the lower surface of the installation barrel are provided with through holes. When the technical scheme is used, the lead block pulls the spring tension meter, and the tension displayed by the spring tension meter is proportional to the stretching length of the spring, so that the structure of the coal mining area ground mining subsidence monitoring device is relatively simple, and the cost of the device is reduced. The base is fixed in the monitoring area, and a hole matching the lead block is dug at the bottom of the through hole, so that the coal mining area ground mining subsidence monitoring device is easy to install and use. For the above technical scheme, although the scheme realizes convenient fixation and installation, it cannot realize adjustment of the height of the equipment and adjustment of the position of the monitoring point in the later period after fixation and installation, which is inconvenient in use. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a coal mining ground subsidence monitoring system to solve the problems raised in the background art. The present application has a novel structure. When the movable seat is raised upward, the fixed tube is rotated to make the protective seat located at the bottom of the movable seat. The fixed tube is in contact with the extrusion plate to form a fulcrum after tilting. The fixed tube supports the movable seat after tilting downward to realize height adjustment of the monitoring instrument. The adjustment rotating tube is rotated on the fixed tube to adjust the length of the one end of the adjustment rotating tube exposed, so that the protective seat is in contact with the movable seat again to adjust the installation height of the movable seat. The probe at one end of the fixed tube is in contact with the ground to form multi-point monitoring. In addition, the fixed tube is adjusted in the tilting angle under the extrusion of the movable seat, and the position of the monitoring point is adjusted at the same time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coal mine surface subsidence monitoring system, comprising a fixed base with a fixed groove, a fixed tube movably installed inside the fixed groove, the fixed tube being mounted inside the fixed groove via a rotating shaft, a probe movably installed at the bottom of the fixed tube, the probe being limited and mounted inside the fixed tube by a fixing bolt, a rotating tube rotatably installed at the top of the fixed tube, a protective seat fixed at the top of the rotating tube, a motor housing fixedly installed inside the protective seat, a movable seat movably installed at the top of the fixed base, and a monitoring instrument fixed at the top of the movable seat.

[0006] Furthermore, a support column is fixed to the bottom of the movable seat, and a groove is opened on the support column. A fixing cylinder is fixed to the bottom of the fixed seat, and the support column is movably installed inside the fixed seat and the fixing cylinder.

[0007] Furthermore, the fixed cylinder has a slot, a fixing component is movably installed inside the slot, a movable cylinder is movably installed on the fixed cylinder, a storage groove is opened on the inner wall of the movable cylinder, and the side of the fixing component is movably installed inside the storage groove.

[0008] Furthermore, a sliding groove is formed on the inner wall of the movable cylinder, and a slider is movably installed inside the sliding groove. The slider is installed inside the sliding groove by a support mechanism, and one end of the slider is fixed to the fixed cylinder.

[0009] Furthermore, a drill bit is rotatably mounted on the bottom of the fixed cylinder, the drill bit is movably mounted inside the movable cylinder, a fixing block is fixed on the inner wall of the fixed cylinder, a fixing ring is fixed between the fixing blocks, a positioning post is fixed at the bottom of the fixing ring, and a motor base is movably mounted on the positioning post.

[0010] Furthermore, a reset mechanism is fixed on the motor base, one end of which is fixed to a fixed ring. A drive motor is fixed on the motor base, and a rotating column is mounted on the drive motor. One end of the rotating column is fixed to the drill bit. A connecting seat is welded to the inner wall of the fixed cylinder, and a winding part is fixed on the connecting seat. A cable is movably installed inside the winding part, and one end of the cable is fixed to a ring seat.

[0011] Furthermore, a retaining bead is movably installed on the inner wall of the fixed cylinder, the retaining bead is movably installed on the inner wall of the ring seat, an installation groove is opened on the side of the drill bit, a movable block is movably installed inside the installation groove, a limit block is fixed on the side of the movable block, a limit groove is opened on the inner wall of the installation groove, and the limit block is installed inside the limit groove by a tension mechanism.

[0012] Furthermore, an extrusion plate is movably installed inside the fixed groove, an extrusion column is fixed on one side of the extrusion plate, an extrusion mechanism is movably installed on the extrusion column, one end of the extrusion mechanism is fixed on the extrusion plate, one end of the fixed tube has an external thread, and the rotating tube is rotatably installed on the external thread.

[0013] Furthermore, the fixing component includes a fixing rod, one end of which is movably mounted with a support insert, and the fixing rod and the support insert are hinged together by a fixing shaft.

[0014] Furthermore, the monitoring instrument includes a control box, inside which a data acquisition module is fixedly installed. The data acquisition module includes a monitoring module and a data processing unit. The monitoring module includes a groundwater monitoring module and a groundwater layer monitoring module. The data acquisition module is electrically connected to the early warning module, and the data processing unit is electrically connected to the human-machine operation module.

[0015] The beneficial effects of this invention are:

[0016] 1. In use, the movable seat is raised, and the fixed tube rotates so that the protective seat is located at the bottom of the movable seat. After the fixed tube tilts, it contacts the extrusion plate to form a fulcrum. The tilted fixed tube supports the movable seat to adjust the height of the monitor. Later, the rotating tube rotates on the fixed tube to adjust the length of one end of the rotating tube exposed. Thus, after the protective seat contacts the movable seat again, the installation height of the movable seat is adjusted a second time. The probe at one end of the fixed tube points downward to contact the ground to form multi-point monitoring. In addition, the position of the monitoring point is adjusted at the same time as the tilt angle of the fixed tube is adjusted under the extrusion of the movable seat.

[0017] 2. In this invention, after the movable cylinder moves downward, it loses its limiting effect on the support insert. The support insert and the fixing rod rotate and tilt. The support insert is tilted and installed on the ground to limit and support the fixing cylinder. Later, after the movable cylinder moves upward, the drill bit is exposed. As the drill bit drills into the ground, the movable cylinder moves upward under the pressure at the bottom. The top of the movable cylinder contacts the inner wall of the fixing rod to support and limit the fixing rod. Later, under the rotation of the drill bit, the support insert is pushed into the ground by itself for fixation.

[0018] 3. In this invention, the movable block rotates and moves out while the drill bit rotates. After the movable tube contacts the ground, the drilling diameter increases. Later, after drilling is completed, the drill bit and drive motor move upward slightly. After drilling is completed, the operator manually separates the ring seat from the chuck. After the ring seat loses its support, it enters the borehole and contacts the ground. The ground at the drilling location is monitored by the sensor inside the ring seat. Attached Figure Description

[0019] Figure 1 This is a schematic block diagram of a coal mine surface subsidence monitoring system according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of a coal mine surface subsidence monitoring system according to the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the movable seat of the coal mine surface subsidence monitoring system after it has been raised, according to the present invention.

[0022] Figure 4 This is a magnified structural diagram of point A in a coal mine surface subsidence monitoring system according to the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of a fixed cylinder for a coal mine surface subsidence monitoring system according to the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the movable cylinder of a coal mine surface subsidence monitoring system according to the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the fixed ring in a coal mine surface subsidence monitoring system according to the present invention.

[0026] Figure 8 This is a magnified structural diagram of point B in a coal mine surface subsidence monitoring system according to the present invention.

[0027] Figure 9 This is a side view cross-sectional diagram of the fixed cylinder structure of a coal mine surface subsidence monitoring system according to the present invention.

[0028] Figure 10 This is a schematic diagram of the structure of the extrusion plate of a coal mine surface subsidence monitoring system according to the present invention;

[0029] In the diagram: 1. Fixed base; 2. Fixed groove; 3. Fixed tube; 4. Probe; 5. Fixed bolt; 6. Fixed cylinder; 7. Movable cylinder; 8. Slotted; 9. Fixed assembly; 10. Rotating tube; 11. Protective base; 12. Motor box; 13. Movable base; 14. Monitor; 15. Support column; 16. Groove; 17. Extrusion plate; 18. Fixed rod; 19. Support insert; 20. Drill bit; 21. Storage groove; 22. Slide groove; 23. Slider; 24. 1. Support mechanism; 25. Fixing ring; 26. Fixing block; 27. Positioning column; 28. Motor base; 29. ​​Drive motor; 30. Reset mechanism; 31. Rotating column; 32. Ring seat; 33. Cable; 34. Mounting groove; 35. Limiting block; 36. Tension mechanism; 37. Movable block; 38. Fixed shaft; 39. Connecting seat; 40. Rewinding part; 41. Clamping ball; 42. Rotating shaft; 43. Extrusion column; 44. Extrusion mechanism; 45. External thread. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] Please see Figures 1 to 10 This invention provides a technical solution: a coal mine surface subsidence monitoring system, including a fixed base 1, a fixed groove 2 on the fixed base 1, a fixed tube 3 movably installed inside the fixed groove 2, the fixed tube 3 being installed inside the fixed groove 2 via a rotating shaft 42, a probe 4 movably installed at the bottom of the fixed tube 3, the probe 4 being limited and installed inside the fixed tube 3 by a fixing bolt 5, a rotating tube 10 rotatably installed at the top of the fixed tube 3, a protective seat 11 fixed at the top of the rotating tube 10, a motor housing 12 fixedly installed inside the protective seat 11, a movable seat 13 movably installed at the top of the fixed base 1, and a monitoring instrument 14 fixed at the top of the movable seat 13. The probe 4 is limited inside the fixed tube 3 by the compression of the fixing bolt 5, facilitating the storage and protection of the probe 4 when not in use.

[0032] In this embodiment, a support column 15 is fixed to the bottom of the movable seat 13, and a groove 16 is formed on the support column 15. A fixed cylinder 6 is fixed to the bottom of the fixed seat 1. The support column 15 is movably installed inside the fixed seat 1 and the fixed cylinder 6. A slot 8 is formed on the fixed cylinder 6, and a fixing component 9 is movably installed inside the slot 8. A movable cylinder 7 is movably installed on the fixed cylinder 6. A storage groove 21 is formed on the inner wall of the movable cylinder 7. The side of the fixing component 9 is movably installed inside the storage groove 21. A sliding groove 22 is formed on the inner wall of the movable cylinder 7, and a slider 23 is movably installed inside the sliding groove 22. The slider 23 is installed inside the sliding groove 22 through a support mechanism 24. One end of the slider 23 is fixed to the fixed cylinder 6. The support mechanism 24 is a support spring. The support spring generates a rebound force when compressed. Later, after the movable cylinder 7 separates from the ground, the movable cylinder 7 moves downward under the thrust of the support mechanism 24 to complete the shielding and protection of the drill bit 20.

[0033] In this embodiment, a drill bit 20 is rotatably mounted on the bottom of the fixed cylinder 6, and the drill bit 20 is movably mounted inside the movable cylinder 7. A fixing block 26 is fixed on the inner wall of the fixed cylinder 6, and a fixing ring 25 is fixed between the fixing blocks 26. A positioning post 27 is fixed to the bottom of the fixing ring 25, and a motor base 28 is movably mounted on the positioning post 27. A reset mechanism 30 is fixed on the motor base 28, and one end of the reset mechanism 30 is fixed to the fixing ring 25. A drive motor 29 is fixed on the motor base 28, and a rotating post 31 is mounted on the drive motor 29. One end of the rotating post 31 is fixed to the drill bit 20. A connecting seat 39 is welded to the inner wall of the fixed cylinder 6, and a winding part 40 is fixed on the connecting seat 39. The take-up section 40 has a cable 33 movably installed inside, and one end of the cable 33 is fixed to a ring seat 32. A retaining bead 41 is movably installed on the inner wall of the fixed cylinder 6, and the retaining bead 41 is movably installed on the inner wall of the ring seat 32. The drill bit 20 has an installation groove 34 on its side, and a movable block 37 is movably installed inside the installation groove 34. A limit block 35 is fixed on the side of the movable block 37, and a limit groove is opened on the inner wall of the installation groove 34. The limit block 35 is installed inside the limit groove by a tension mechanism 36, which is a tension spring. Under the high-speed rotation of the drill bit 20, centrifugal force is generated. After the centrifugal force throws the movable block 37 out, the diameter of the drill hole is increased, which facilitates the ring seat 32 to enter the interior of the drill hole for monitoring later.

[0034] In this embodiment, a compression plate 17 is movably installed inside the fixing groove 2. A compression column 43 is fixed to one side of the compression plate 17, and a compression mechanism 44 is movably installed on the compression column 43. The compression mechanism 44 is a compression spring. After the fixing tube 3 compresses the compression plate 17, the rebound force generated by the compression mechanism 44 pushes the compression plate 17 to limit and support the fixing tube 3. In addition, the compression plate 17 pushes the compression column 43 to move, which can complete the compression and limiting of the support column 15. One end of the compression mechanism 44 is fixed to the compression plate 17. One end of the fixing tube 3 has an external thread 45. The rotating tube 10 is rotatably installed on the external thread 45. The fixing assembly 9 includes a fixing rod 18. A support insert 19 is movably installed at one end of the fixing rod 18. The fixing rod 18 and the support insert 19 are hinged and fixed by a fixing shaft 38. The monitoring instrument 14 includes a control box. The inside of the control box... A data acquisition module is fixedly installed. The data acquisition module includes a monitoring module and a data processing unit. The monitoring module includes a groundwater monitoring module and a groundwater layer monitoring module. The data acquisition module is electrically connected to the early warning module. The data processing unit is electrically connected to the human-machine operation module. The groundwater level monitoring module, the groundwater layer monitoring module, and the spatial information monitoring module of each monitoring point output the collected data to the data acquisition module for processing, and then send it to the data processing unit for analysis and real-time monitoring of surface subsidence in the area. The water level monitoring device is a MicroDiver-DI610 micro automatic groundwater monitor. The groundwater layer monitoring module consists of layered markers set in the layered marker holes opened at each monitoring point. Sensors that monitor the compression and expansion of each soil layer in real time are set on the layered markers. The sensors are respectively installed inside the ring seat 32 and the probe 4.

[0035] Working principle: In use, firstly, the movable seat 13 is moved upward and raised. As the movable seat 13 rises, the protective seat 11 at one end of the fixed tube 3 is tilted towards the center of the fixed seat 1. After the protective seat 11 tilts, it moves to the bottom of the movable seat 13, and then the movable seat 13 is released. The protective seat 11 forms a fulcrum to support and limit the movable seat 13. After the fixed tube 3 rotates, it presses the extrusion plate 17. Under the pressure, the extrusion plate 17 pushes the extrusion column 43 inward. After the extrusion column 43 moves inward, it cooperates with the groove 16 on the support column 15 to limit the movable seat 13 a second time. In addition, the rotating tube 10 rotates on the fixed tube 3 in the early stage. Adjusting the height and position of the protective base 11 allows for adjustment of the tilt angle of the fixed tube 3 and the installation height of the movable base 13, thus meeting the needs of different applications. When the fixed tube 3 is tilted, rotating the fixing bolt 5 removes its pressure limit on the probe 4, causing the probe 4 to contact the ground with the wire. After the probe 4 contacts the ground, the initial data is set, and the data can be monitored in real time after the probe 4 shifts. When the fixed base 1 is fixed as a whole, moving the movable cylinder 7 downwards removes its limit on the support insert 19, causing the support insert 19 and the fixed rod 18 to rotate and tilt. 9 is inclinedly installed on the ground via fixed shaft 38 to limit and support fixed cylinder 6. Later, after movable cylinder 7 moves upward, drill bit 20 is exposed. As drill bit 20 contacts the ground, drive motor 29 is activated. Drive motor 29 drives rotating column 31 and drill bit 20 to rotate and drill into the ground. The high-speed rotation of drill bit 20 generates centrifugal force, which throws movable block 37 out and increases the diameter of the hole. At the same time, movable cylinder 7 moves upward under the pressure at the bottom. The top of movable cylinder 7 contacts the inner wall of fixed rod 18 to support and limit fixed rod 18. Later, under the rotation of drill bit 20, motor base 28 moves on positioning column 27. During movement, the tension reset mechanism 30 deforms. After drilling is completed, the drill bit 20 reverses and moves upward. After the motor seat 28 loses its support, the reset mechanism 30 drives the motor seat 28 to move upward. Later, the operator moves the ring seat 32 downward and loses the limit of the locking ball 41. The ring seat 32 drives the cable 33 to move downward by its own weight. The winding part 40 is a car seat belt retraction structure, but the weight of the ring seat 32 can make the cable 33 move outward. The ring seat 32 enters the borehole to realize the monitoring of the center position. After the ring seat 32 is installed, the support insert 19 is inserted into the original insertion hole to support the entire fixed cylinder 6.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coal mine surface subsidence monitoring system, comprising a fixed base (1), characterized in that: The fixed base (1) has a fixed groove (2), and a fixed tube (3) is movably installed inside the fixed groove (2). The fixed tube (3) is installed inside the fixed groove (2) via a rotating shaft (42). A probe (4) is movably installed at the bottom of the fixed tube (3). The probe (4) is limited and installed inside the fixed tube (3) by a fixing bolt (5). A rotating tube (10) is rotatably installed at the top of the fixed tube (3). A protective seat (11) is fixed at the top of the rotating tube (10). A motor box (12) is fixedly installed inside the protective seat (11). A movable seat (13) is movably installed at the top of the fixed base (1). A monitoring instrument (14) is fixed at the top of the movable seat (13).

2. The surface subsidence monitoring system for coal mining as described in claim 1, characterized in that: The bottom of the movable seat (13) is fixed with a support column (15), and the support column (15) has a groove (16). The bottom of the fixed seat (1) is fixed with a fixed cylinder (6), and the support column (15) is movably installed inside the fixed seat (1) and the fixed cylinder (6).

3. The surface subsidence monitoring system for coal mining according to claim 2, characterized in that: The fixed cylinder (6) has a slot (8), and a fixed component (9) is movably installed inside the slot (8). A movable cylinder (7) is movably installed on the fixed cylinder (6). A storage groove (21) is opened on the inner wall of the movable cylinder (7), and the side of the fixed component (9) is movably installed inside the storage groove (21).

4. The surface subsidence monitoring system for coal mining according to claim 3, characterized in that: The inner wall of the movable cylinder (7) has a groove (22), and a slider (23) is movably installed inside the groove (22). The slider (23) is installed inside the groove (22) through a support mechanism (24), and one end of the slider (23) is fixed to the fixed cylinder (6).

5. A coal mine surface subsidence monitoring system according to claim 3, characterized in that: A drill bit (20) is rotatably mounted on the bottom of the fixed cylinder (6). The drill bit (20) is movably mounted inside the movable cylinder (7). A fixing block (26) is fixed on the inner wall of the fixed cylinder (6). A fixing ring (25) is fixed between the fixing blocks (26). A positioning post (27) is fixed at the bottom of the fixing ring (25). A motor seat (28) is movably mounted on the positioning post (27).

6. The surface subsidence monitoring system for coal mining according to claim 5, characterized in that: A reset mechanism (30) is fixed on the motor base (28). One end of the reset mechanism (30) is fixed on the fixing ring (25). A drive motor (29) is fixed on the motor base (28). A rotating column (31) is installed on the drive motor (29). One end of the rotating column (31) is fixed on the drill bit (20). A connecting seat (39) is welded on the inner wall of the fixing cylinder (6). A winding part (40) is fixed on the connecting seat (39). A cable (33) is movably installed inside the winding part (40). One end of the cable (33) is fixed with a ring seat (32).

7. A coal mine surface subsidence monitoring system according to claim 6, characterized in that: A retaining bead (41) is movably installed on the inner wall of the fixed cylinder (6). The retaining bead (41) is movably installed on the inner wall of the ring seat (32). An installation groove (34) is opened on the side of the drill bit (20). A movable block (37) is movably installed inside the installation groove (34). A limit block (35) is fixed on the side of the movable block (37). A limit groove is opened on the inner wall of the installation groove (34). The limit block (35) is installed inside the limit groove through a tension mechanism (36).

8. A coal mine surface subsidence monitoring system according to claim 1, characterized in that: An extrusion plate (17) is movably installed inside the fixed groove (2). An extrusion column (43) is fixed on one side of the extrusion plate (17). An extrusion mechanism (44) is movably installed on the extrusion column (43). One end of the extrusion mechanism (44) is fixed on the extrusion plate (17). One end of the fixed tube (3) has an external thread (45). The rotating tube (10) is rotatably installed on the external thread (45).

9. A coal mine surface subsidence monitoring system according to claim 3, characterized in that: The fixing component (9) includes a fixing rod (18), one end of which is movably mounted with a support insert (19), and the fixing rod (18) and the support insert (19) are hinged together by a fixing shaft (38).

10. A coal mine surface subsidence monitoring system according to claim 1, characterized in that: The monitoring instrument (14) includes a control box, and a data acquisition module is fixedly installed inside the control box. The data acquisition module includes a monitoring module and a data processing unit. The monitoring module includes a groundwater monitoring module and a groundwater layer monitoring module. The data acquisition module is electrically connected to the early warning module, and the data processing unit is electrically connected to the human-machine operation module.

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