Karst collapse monitoring device

Abstract

The invention relates to the technical field of monitoring devices, in particular to a karst collapse monitoring device which comprises a monitoring cylinder, a monitoring box, a solar panel and a monitor, and a mounting plate is arranged at the bottom end of the monitoring cylinder. Through arrangement of structures such as a U-shaped connecting piece, a rotating rod and a U-shaped rod, only accessories such as the monitoring box, the solar panel and the monitor need to be inserted into the U-shaped connecting piece; then, by rotating a rotating rod, a U-shaped rod can be sequentially pulled to move towards the middle under the rotary extrusion of a right-angle block and an extrusion frame, then accessories such as a monitoring box, a solar panel and a monitor are tightly locked on a monitoring cylinder, a worker does not need to tighten nuts one by one, and the U-shaped connecting piece is pre-fixed on the monitoring cylinder; and the inserted fittings do not fall off from the monitoring cylinder, so that only one installer is needed for installation in the whole process, the installation efficiency of the device is greatly improved, and the device can be conveniently used in some rapid installation conditions.

Description

Technical Field

[0001] This invention relates to the field of monitoring device technology, and in particular to a karst collapse monitoring device. Background Technology

[0002] Karst ground collapse refers to the sudden deformation and destruction of the loose soil covering the karst caves under the influence of external forces or human factors. The result is often a conical sinkhole. Karst ground collapse is a major type of ground deformation and destruction, and it often occurs in areas where soluble rocks such as carbonate rocks, calcareous clastic rocks, and salt rocks are distributed. In addition to natural factors such as rainfall, floods, droughts, and earthquakes, the direct triggers for collapse activities are often closely related to human factors such as pumping, drainage, water storage, and mineral activities. The latter are often large in scale, sudden, and harmful. Karst ground collapse is found in areas where carbonate rocks are distributed, and its formation is affected by both the environment and human activities. Therefore, it is necessary to monitor karst collapse, especially during the mineral geological exploration stage.

[0003] At the karst collapse monitoring project site, solar panels, monitoring boxes, antennas and other supporting equipment all need to be fixed to the monitoring pole one by one using clamps and bolts. The traditional installation method requires clamping the pole, aligning the holes, inserting the bolts, and tightening each piece with a wrench. The whole process relies on the cooperation of more than two workers. One person lifts and aligns the pole, while the other person uses tools to tighten the nuts. The high-altitude operation is time-consuming and physically demanding, and problems such as hole misalignment, thread stripping, and uneven tightening torque are prone to occur. When encountering heavy rain, strong winds or rushing to install at night, the difficulty and safety hazards of multiple people working together increase significantly. The installation efficiency is low and the construction window is short, which directly slows down the deployment progress of the entire monitoring system. At the same time, the scattered clamping nodes increase the workload of later inspection and maintenance, which is not conducive to rapid disassembly and replacement of equipment.

[0004] Therefore, a karst collapse monitoring device is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a karst collapse monitoring device.

[0006] To achieve the above objectives, the technical solution adopted by this invention is as follows: a karst collapse monitoring device, comprising a monitoring cylinder, a monitoring box, a solar panel, and a monitor. The monitoring cylinder has a mounting plate at its bottom end. Four legs are fixedly connected at equal intervals between the outer wall of the monitoring cylinder and the top of the mounting plate. Rotation grooves are provided on the bottom end of the monitoring cylinder and the four legs. A rotating rod is rotatably connected between the top of the mounting plate and the top of the inner end of the monitoring cylinder. Several U-shaped connectors are equidistantly arranged on the outer wall of the monitoring cylinder. An upper rectangular hole is provided through the front side of the monitoring cylinder. The several U-shaped connectors... A U-shaped rod is slidably connected to both the front and rear sides relative to the position next to the upper rectangular hole, and one end of the U-shaped rod extends into the upper rectangular hole. A round rod is fixedly connected to the top of the U-shaped rod relative to the position inside the monitoring cylinder. A connecting frame is fixedly connected to the outer wall of the rotating rod relative to the position above the round rod. A four-fifths circular extrusion frame is fixedly connected to the bottom end of the connecting frame. A right-angle block with an inclined surface is fixedly connected to the side end of the extrusion frame. An expansion mechanism that can add new U-shaped connecting parts is also provided, as well as a limiting mechanism for limiting the rotation position of the rotating rod.

[0007] In the above technical solution, further, a pair of U-shaped insert frames are fixedly connected to the side wall of the monitoring box relative to the two U-shaped connectors. A middle plate is fixedly connected to the inner center of each U-shaped insert frame. A pair of solar panels are provided. A bracket is bolted between the bottom ends of the solar panels. An upper side plate is fixedly connected to the side wall of the bracket. A pair of upper slots for inserting U-shaped connectors are opened on both sides of the upper side plate. A lower side plate is fixedly connected to the side wall of the monitor. A pair of lower slots for inserting U-shaped connectors are opened through the side wall of the lower side plate. After the U-shaped rod is inserted, it contacts the side walls of the middle plate, the upper side plate, and the lower side plate respectively.

[0008] In the above technical solution, the upper side plate, lower side plate and middle plate sidewalls are all fixedly connected with right-angled plates with inclined surfaces next to the insertion position of the U-shaped connector, and the inner side of the U-shaped rod is provided with an inclined groove.

[0009] In the above technical solution, the limiting mechanism further includes a limiting bolt, a rotating rod is fixedly connected to the bottom end of the outer wall of the rotating rod, the limiting bolt is threadedly connected to the top end of the rotating rod, a pair of threaded grooves are opened at the top end of the mounting plate, and the bottom end of the limiting bolt is threadedly connected to the inner side of one of the threaded grooves.

[0010] In the above technical solution, the expansion mechanism further includes a plug, and the monitoring cylinder sidewall is provided with a lower rectangular hole at a position relative to the upper rectangular hole. The top of the U-shaped rod is provided with a circular hole, and the circular rod is longitudinally slidably connected to the inside of the circular hole. A telescopic spring is fixedly connected between the bottom of the circular hole and the bottom of the circular rod. Several plugs are provided, and the several plugs are all located inside the U-shaped connector.

[0011] In the above technical solution, further, an arc-shaped block that fits against the outer wall of the monitoring cylinder is fixedly connected to the inner side of the U-shaped connector. The inserts are all fixedly connected to the inner side of the arc-shaped block, and the inserts are all inserted into the inner side of the corresponding lower rectangular holes. During expansion, the U-shaped connector is first taken out, the round rods on both sides are pressed and slid into the round holes, and the telescopic spring is compressed. Then, the U-shaped rod is pulled outward, so that the U-shaped connector can be inserted next to the upper rectangular hole reserved on the outer wall of the monitoring cylinder. At the same time, the inserts are inserted into the corresponding lower rectangular holes. Then, the U-shaped rod is pushed into the upper rectangular hole. Finally, when the round rod is completely slid into the monitoring cylinder, the compression on the top of the round rod will be released, and then it will be pushed out under the elastic force of the telescopic spring to complete the rapid expansion.

[0012] In the above technical solution, the top ends of the upper rectangular hole and the lower rectangular hole are both inclined, the top end of the round rod is set as a smooth arc surface, and a return spring is fixedly connected between the inner side of the U-shaped rod and the outer wall of the U-shaped connector.

[0013] In the above technical solution, the sides of the U-shaped connector are all made of magnetic material, and the U-shaped insert frame, upper side plate and lower side plate are all made of iron.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the design of U-shaped connectors, rotating rods, and U-shaped bars, allows for easy installation. Simply insert the monitoring box, solar panel, and monitor into the U-shaped connector, and then rotate the rotating rod. Under the pressure of the right-angle block and the compression frame, the U-shaped bars are pulled towards the center, thus firmly locking the monitoring box, solar panel, and monitor onto the monitoring cylinder. This eliminates the need for workers to tighten nuts individually. Furthermore, the U-shaped connectors are pre-fixed to the monitoring cylinder, preventing the inserted components from falling off. Therefore, only one installer is required for the entire installation process, significantly improving installation efficiency and facilitating use in emergency installation situations.

[0015] 2. Through the expansion mechanism, this invention enables the quick installation of additional U-shaped connectors onto the monitoring cylinder when other accessories need to be installed during the on-site installation of the karst collapse monitoring device. Furthermore, when the number of accessories to be installed decreases, pre-installed excess U-shaped connectors can be removed, thus meeting diverse on-site installation needs. Moreover, the angle of the U-shaped connectors can be flexibly changed according to the on-site installation conditions, allowing the accessories to be installed at four different angles on the monitoring cylinder, further improving the convenience of the device. Attached Figure Description

[0016] Figure 1 This is a rear-view three-dimensional structural diagram of the monitoring device of the present invention; Figure 2This is a three-dimensional structural diagram of the monitoring device of the present invention from the front. Figure 3 Appendix of the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating rod and the limiting bolt separated according to the present invention; Figure 5 This is a partial bottom-view three-dimensional structural diagram of the solar panel and monitoring cylinder of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the monitoring box and the middle plate of the present invention. Figure 7 This is a top-view full-section three-dimensional structural diagram of the monitoring cylinder of the present invention; Figure 8 This is a bottom-view perspective view of the rotating rod and two U-shaped connectors of the present invention. Figure 9 This is a three-dimensional structural diagram showing a partial cross-section of the U-shaped connector and the round rod of the present invention.

[0017] In the diagram: 1. Monitoring cylinder; 2. Monitoring box; 3. Solar panel; 4. Mounting plate; 5. Support leg; 6. Rotating groove; 7. Rotating rod; 8. U-shaped connector; 9. Upper rectangular hole; 10. U-shaped rod; 11. Round rod; 12. Connecting frame; 13. Extrusion frame; 14. Right-angle block; 15. Monitor; 16. U-shaped insert frame; 17. Middle plate; 18. Bracket; 19. Upper side plate; 20. Upper groove; 21. Lower side plate; 22. Lower groove; 23. Right-angle plate; 24. Inclined groove; 25. Limit bolt; 26. Rotating rod; 27. Threaded groove; 28. Insert block; 29. ​​Lower rectangular hole; 30. Return spring; 31. Round hole; 32. Telescopic spring; 33. Arc block. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] In practical use, it was found that at the karst collapse monitoring project site, the solar panel 3, monitoring box 2, antenna and other supporting equipment all need to be fixed to the monitoring pole one by one with clamps and bolts. The traditional installation method requires clamping the pole, aligning the holes, inserting the bolts, and tightening each piece with a wrench. The whole process relies on the cooperation of more than two workers. One person lifts and aligns, and the other person uses tools to tighten the nuts. The high-altitude operation time is long and the physical consumption is large. It is also prone to problems such as hole misalignment, thread stripping and uneven tightening torque. When there is heavy rain, strong wind or nighttime rush installation, the difficulty and safety hazards of multiple people working together increase significantly. The installation efficiency is low and the construction window is short, which directly slows down the deployment progress of the entire monitoring system. At the same time, the dispersed clamping nodes increase the workload of later inspection and maintenance, which is not conducive to quick disassembly and equipment replacement. To solve the above problems, the following structure was invented.

[0021] like Figures 1-9 The karst collapse monitoring device shown includes a monitoring cylinder 1, a monitoring box 2, a solar panel 3, and a monitor 15. The monitoring box 2 is the "field brain" for karst collapse monitoring, integrating power management, data acquisition, sensor interface, wireless communication, and lightning protection modules. It can collect parameters such as displacement, tilt angle, and water level in real time, cache them locally, and transmit them remotely via 4G / 5G. It also features low power consumption and plug-and-play maintenance, enabling integrated, unattended operation. The solar panel 3 provides power to the monitoring box 2. The monitor 15 allows monitoring personnel to remotely view the surrounding situation. The bottom of the monitoring cylinder 1 is equipped with a mounting plate 4. Four legs 5 are fixedly connected at equal intervals between the outer wall of the monitoring cylinder 1 and the top of the mounting plate 4. Rotation grooves 6 are provided on the bottom of the monitoring cylinder 1 and the four legs 5. The top of the mounting plate 4 is connected to the monitoring cylinder. A rotating rod 7 is rotatably connected between the top and bottom of the monitoring cylinder 1. Several U-shaped connectors 8 are equidistantly arranged on the outer wall of the monitoring cylinder 1. An upper rectangular hole 9 is opened through the front side of the monitoring cylinder 1. U-shaped rods 10 are slidably connected through the front and rear sides of the several U-shaped connectors 8 relative to the position next to the upper rectangular hole 9. One end of the U-shaped rod 10 extends and is inserted into the upper rectangular hole 9. A round rod 11 is fixedly connected to the top of the U-shaped rod 10 relative to the position inside the monitoring cylinder 1. A connecting frame 12 is fixedly connected to the outer wall of the rotating rod 7 relative to the position above the round rod 11. A four-fifths circular extrusion frame 13 is fixedly connected to the bottom end of the connecting frame 12. A right-angle block 14 with an inclined surface is fixedly connected to the side end of the extrusion frame 13. An expansion mechanism that can add new U-shaped connectors 8 is also provided, as well as a limiting mechanism for limiting the rotation position of the rotating rod 7. A pair of U-shaped insert frames 16 are fixedly connected to the side wall of the monitoring box 2 relative to the two U-shaped connectors 8. A middle plate 17 is fixedly connected to the middle of the inner side of each U-shaped insert frame 16. A pair of solar panels 3 are provided. A bracket 18 is bolted between the bottom ends of the solar panels 3. An upper side plate 19 is fixedly connected to the side wall of the bracket 18. A pair of upper slots 20 for inserting the U-shaped connectors 8 are opened on both sides of the upper side plate 19. A lower side plate 21 is fixedly connected to the side wall of the monitor 15. A pair of lower slots 22 for inserting the U-shaped connectors 8 are opened through the side wall of the lower side plate 21. After the U-shaped rod 10 is inserted, it contacts the side walls of the middle plate 17, the upper side plate 19 and the lower side plate 21 respectively. The upper side plate 19, lower side plate 21, and middle plate 17 are all fixedly connected with right-angle plates 23 with inclined surfaces next to the insertion position of the U-shaped connector 8. The inner side of the U-shaped rod 10 is provided with an inclined groove 24. With the setting of the right-angle plate 23 and the inclined groove 24, not only can the removal position of the upper side plate 19, lower side plate 21, and middle plate 17 be restricted when the U-shaped rod 10 is inserted, but also, as the U-shaped rod 10 is gradually inserted, the inclined surface of the right-angle plate 23 is squeezed by the inclined groove 24 on the U-shaped rod 10, and the monitoring box 2, solar panel 3, and monitor 15 are gradually squeezed onto the outer wall of the monitoring cylinder 1, which further improves the locking effect of the monitoring box 2, solar panel 3, and monitor 15 and prevents the monitoring box 2, solar panel 3, and monitor 15 from shaking freely on the monitoring cylinder 1 after installation, which would affect the stability of the equipment during operation. The limiting mechanism includes a limiting bolt 25, a rotating rod 26 is fixedly connected to the bottom of the outer wall of the rotating rod 7, the limiting bolt 25 is threadedly connected to the top of the rotating rod 26, and a pair of threaded grooves 27 are opened at the top of the mounting plate 4, with the bottom of the limiting bolt 25 threadedly connected to the inside of one of the threaded grooves 27. The sides of the U-shaped connector 8 are all made of magnetic material, while the U-shaped frame 16, upper side plate 19, and lower side plate 21 are all made of iron. By using magnetic material and making the U-shaped frame 16, upper side plate 19, and lower side plate 21 all made of iron, after the U-shaped frame 16, upper side plate 19, and lower side plate 21 on the monitoring box 2, solar panel 3, and monitor 15 are inserted into the U-shaped connector 8, the position of the monitoring box 2, solar panel 3, and monitor 15 is pre-limited not only by the U-shaped connector 8 abutting against the U-shaped frame 16, upper groove 20, and lower groove 22, but also by the magnetic attraction, the position of the monitoring box 2, solar panel 3, and monitor 15 is further pre-limited, ensuring stability during installation. When installing the karst collapse monitoring device, a concrete reference pier is first poured at the installation site. During pouring, studs that mate with the mounting plate 4 are inserted. During the production and assembly of the monitoring cylinder 1, the U-shaped connectors 8 at the installation positions of the monitoring box 2, solar panel 3, and monitor 15 are pre-installed on the monitoring cylinder 1. Then, during the on-site installation of the monitoring device, the monitoring cylinder 1 is first inserted into the studs on the concrete reference pier through the mounting plate 4, and then the nuts are screwed in to fix the position of the monitoring cylinder 1. (When installing the monitoring cylinder 1, it is important to note that the corresponding U-shaped connectors 8 need to be oriented towards the designated position according to the on-site installation requirements. For example, the position of the U-shaped connector 8 of the solar panel 3 needs to ensure that the solar panel 3 is in a sun-facing position after installation.) Then, the solar panel 3 assembled by the bracket 18 can be taken out, and the upper groove 20 on the upper side plate 19 can be inserted into the corresponding two U-shaped connectors 8 (since the U-shaped connectors 8 are pre-fixed on the monitoring cylinder 1, the solar panel 3 inserted into the U-shaped connectors 8 will not fall off). Then, the monitor 15 can be taken out, and the lower groove 22 on the lower side plate 21 can be inserted into the corresponding U-shaped connectors 8. Finally, the monitoring box 2 can be taken out, and the U-shaped insert frame 16 installed on the monitoring box 2 can be inserted into the corresponding U-shaped connectors 8. At the same time, the U-shaped connectors 8 are located on both sides of the middle plate 17. Then, the limiting bolt 25 can be rotated to unscrew the limiting bolt 25 from the threaded groove 27, thereby releasing the rotation restriction on the rotating rod 26 and the rotating rod 7. Then, the rotating rod 26 is pushed to drive the rotating rod 7 to rotate between the mounting plate 4 and the monitoring cylinder 1. At the same time, the connecting frame 12 drives the extrusion frame 13 and the right-angle block 14 to rotate (it should be noted that the right-angle block 14 is initially positioned next to one of the upper rectangular holes 9). When the right-angle block 14 rotates to one of the round rods 11, since the U-shaped rod 10 and the round rod 11 can only slide laterally, the inclined surface of the right-angle block 14 will squeeze the round rod 11 to slide, while driving the U-shaped rod 10 to slide within the upper rectangular hole 9. At this time, the other end of the U-shaped rod 10 will move, causing the U-shaped rod 10 to insert into the side wall of the middle plate 17, the upper side plate 19, and the lower side plate 21. Then the round rod 11 moves to the extrusion frame. The side wall of the frame 13 maintains the compression of the round rod 11. Then the right-angle block 14 rotates to the side of another round rod 11, and the above operation is repeated. Another U-shaped rod 10 is also inserted into the side wall of the middle plate 17, the upper side plate 19 and the lower side plate 21, thereby completing the simultaneous locking and fixing of the monitoring box 2, the solar panel 3 and the monitor 15. Finally, the limiting bolt 25 is rotated in the opposite direction and threaded into another threaded groove 27. (It should be noted that since the compression frame 13 is a four-fifths ring, there is a gap between the right-angle block 14 and the other end of the compression frame 13. Therefore, the limiting bolt 25 cannot be threaded into the initial threaded groove 27, otherwise the compression of one of the round rods 11 will not be lost.)

[0022] In summary, with the above structural design, the monitoring box 2, solar panel 3, and monitor 15 are simply inserted into the U-shaped connector 8. Then, by rotating the rotating rod 7, the U-shaped rod 10 is pulled towards the center under the rotation and compression of the right-angle block 14 and the compression frame 13, thus tightly locking the monitoring box 2, solar panel 3, and monitor 15 onto the monitoring cylinder 1. This eliminates the need for workers to tighten the nuts one by one. Furthermore, since the U-shaped connector 8 is pre-fixed to the monitoring cylinder 1, the inserted accessories will not fall off. Therefore, only one installer is needed for the entire installation process, greatly improving the installation efficiency of the device and making it convenient for use in emergency installation situations.

[0023] Based on the above embodiments, it was found during use that if the U-shaped connector 8 is welded to the monitoring cylinder 1, when installing the karst collapse monitoring device, if other accessories need to be installed, clamps and nuts must also be used for installation. It is not possible to flexibly add or remove the U-shaped connector 8 according to the on-site installation requirements. To solve the above problems, the above structure has been further improved.

[0024] The expansion mechanism includes insert blocks 28. Lower rectangular holes 29 are provided through the side wall of the monitoring cylinder 1 at positions relative to the upper rectangular hole 9. Through the setting of the upper rectangular hole 9 and the lower rectangular hole 29, not only can the U-shaped rod 10 on the U-shaped connector 8 be inserted into the upper rectangular hole 9 and the lower rectangular hole 29 at four different positions on the monitoring cylinder 1, but also the insert blocks 28 on the U-shaped connector 8 can be inserted to pre-fix the position of the U-shaped connector 8. Thus, when the U-shaped rod 10 moves to the middle, the U-shaped connector 8 can be tightly fixed to the monitoring cylinder 1. A circular hole 31 is provided at the top of the U-shaped rod 10. The circular rod 11 is longitudinally slidably connected to the inside of the circular hole 31. A telescopic spring 32 is fixedly connected between the bottom end of the circular hole 31 and the bottom end of the circular rod 11. Several insert blocks 28 are provided, and all of the insert blocks 28 are located inside the U-shaped connector 8. The U-shaped connector 8 is fixedly connected to an arc-shaped block 33 that fits against the outer wall of the monitoring cylinder 1. The inserts 28 are all fixedly connected to the inner side of the arc-shaped block 33, and the inserts 28 are all inserted into the inner side of the corresponding lower rectangular holes 29. When expanding the capacity, first take out the U-shaped connector 8, press the round rods 11 on both sides to slide into the round holes 31, and compress the telescopic spring 32. Then pull the U-shaped rod 10 outward, and the U-shaped connector 8 can be inserted next to the upper rectangular hole 9 reserved on the outer wall of the monitoring cylinder 1. At the same time, insert the inserts 28 into the corresponding lower rectangular holes 29. Then push the U-shaped rod 10 into the upper rectangular hole 9. Finally, when the round rod 11 is completely slid into the monitoring cylinder 1, the pressure on the top of the round rod 11 will be released, and then it will be pushed out under the elastic force of the telescopic spring 32 to complete the rapid expansion. The tops of the upper rectangular hole 9 and the lower rectangular hole 29 are both inclined, the top of the round rod 11 is set as a smooth arc surface, and a return spring 30 is fixedly connected between the inner side of the U-shaped rod 10 and the outer wall of the U-shaped connector 8. When a new accessory needs to be installed on the monitoring cylinder 1, and a U-shaped connector 8 needs to be added, first take out the U-shaped connector 8, press down on the round rods 11 on both sides with both thumbs and slide them into the round holes 31, and compress the telescopic spring 32. Then insert the U-shaped connector 8 next to the upper rectangular hole 9 reserved on the outer wall of the monitoring cylinder 1. During this process, the outer wall of the monitoring cylinder 1 will squeeze the side end of the U-shaped rod 10, causing the U-shaped rod 10 to gradually slide to both sides, while stretching the return spring 30. Then, when the U-shaped connector 8 is fully inserted, it will drive the insert block 28 to insert into the corresponding upper rectangular hole 9 or lower rectangular hole 29. At the same time, it will squeeze the U-shaped rod 10 into the U-shaped connector 8. (It should be noted that during the insertion of the U-shaped connector 8, when the part of the round rod 11 is about to be squeezed into the U-shaped connector 8, the worker needs to quickly release the round rod 11, and then the round rod 11 will slide into the U-shaped connector 8.) At this time, the U-shaped rod 10 moves to the position next to the upper rectangular hole 9 or the lower rectangular hole 29, which will release the sliding restriction on the U-shaped rod 10. Then, under the elastic force of the return spring 30, the U-shaped rod 10 is pulled to slide towards the middle (during this process, when the round rod 11 slides out from the U-shaped connector 8, it will slide into the upper rectangular hole 9 or the lower rectangular hole 29. Since the upper rectangular hole 9 or the lower rectangular hole 29 has a slope, it will gradually release the pressure on the round rod 11. Then, under the elastic force of the telescopic spring 32, the round rod 11 is pushed to return to its original position until the U-shaped rod 10 returns to its original position and the round rod 11 is completely extended out of the round hole 31). This completes the rapid expansion installation of the U-shaped connector 8. Then, the added accessories are inserted into the U-shaped connector 8. After all the accessories are installed, the above operation is repeated to lock them.

[0025] In summary, the above structural design allows for the quick installation of additional U-shaped connectors 8 onto the monitoring cylinder 1 when other accessories need to be installed during on-site installation of the karst collapse monitoring device. Furthermore, when the number of accessories required decreases, pre-installed excess U-shaped connectors 8 can be removed, meeting diverse on-site installation needs. Additionally, the angle of the U-shaped connectors 8 can be flexibly changed according to the on-site installation conditions, allowing for the installation of accessories onto the monitoring cylinder 1 at four different angles, further improving the device's convenience.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0027] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A karst collapse monitoring device, comprising a monitoring cylinder (1), a monitoring box (2), a solar panel (3) and a monitor (15), the bottom end of the monitoring cylinder (1) is provided with a mounting plate (4), characterized in that: The equal interval fixed connection between the outer wall of the monitoring cylinder (1) and the top end of the mounting plate (4) has four supporting legs (5), the bottom end of the monitoring cylinder (1) and the four supporting legs (5) are provided with rotating grooves (6), the top end of the mounting plate (4) and the inner top end of the monitoring cylinder (1) are rotatably connected with a rotating rod (7), the outer wall of the monitoring cylinder (1) is provided with a plurality of U-shaped connectors (8) at equal intervals, a plurality of U-shaped rods (10) are slidably connected to the front and rear sides of the U-shaped connectors (8) relative to the position beside the upper rectangular hole (9), and one end of the U-shaped rod (10) extends into the upper rectangular hole (9) and is arranged, the top end of the U-shaped rod (10) is fixedly connected with a circular rod (11) relative to the position in the monitoring cylinder (1), the outer wall of the rotating rod (7) is fixedly connected with a connecting frame (12) relative to the position above the circular rod (11), the bottom end of the connecting frame (12) is fixedly connected with a four-fifth circular extrusion frame (13), the side end of the extrusion frame (13) is fixedly connected with an inclined right-angle block (14), an expansion mechanism for adding new U-shaped connectors (8) is further arranged, and a limiting mechanism for limiting the rotating position of the rotating rod (7) is further arranged.

2. The karst collapse monitoring device according to claim 1, characterized in that: The side wall of the monitoring box (2) is fixedly connected with a pair of U-shaped insertion frames (16) relative to the position beside two U-shaped connectors (8), the inner side of the U-shaped insertion frame (16) is fixedly connected with a middle plate (17), the solar panels (3) are provided in pairs, the bottom end of the solar panels (3) is connected with a support (18) through bolts, the side wall of the support (18) is fixedly connected with an upper side plate (19), a pair of upper grooves (20) for inserting the U-shaped connectors (8) are formed on the two sides of the upper side plate (19), the side wall of the monitor (15) is fixedly connected with a lower side plate (21), a pair of lower grooves (22) for inserting the U-shaped connectors (8) are formed in the side wall of the lower side plate (21), and the U-shaped rods (10) are in contact with the side walls of the middle plates (17), the upper side plates (19) and the lower side plates (21) after being inserted.

3. The karst collapse monitoring device of claim 2, wherein: The side walls of the upper side plate (19), the lower side plate (21) and the middle plate (17) are fixedly connected with inclined right-angle plates (23) relative to the positions beside the U-shaped connectors (8), and the inner side of the U-shaped rod (10) is provided with an inclined groove (24).

4. The karst collapse monitoring device of claim 1, wherein: The limiting mechanism comprises a limiting bolt (25), the outer wall of the rotating rod (7) is fixedly connected with a rotating rod (26) at the bottom end, the limiting bolt (25) is threadedly connected at the top end of the rotating rod (26), a pair of threaded grooves (27) are formed in the top end of the mounting plate (4), and the bottom end of the limiting bolt (25) is threadedly connected to the inner side of one of the threaded grooves (27).

5. The karst collapse monitoring device of claim 1, wherein: The expansion mechanism includes a plug (28). The side wall of the monitoring cylinder (1) is provided with a lower rectangular hole (29) at a position next to the upper rectangular hole (9). The top of the U-shaped rod (10) is provided with a round hole (31). The round rod (11) is longitudinally slidably connected to the inside of the round hole (31). A telescopic spring (32) is fixedly connected between the bottom end of the round hole (31) and the bottom end of the round rod (11). Several plugs (28) are provided, and several plugs (28) are provided inside the U-shaped connector (8).

6. The karst collapse monitoring device of claim 5, wherein: The U-shaped connector (8) is fixedly connected to an arc-shaped block (33) that fits against the outer wall of the monitoring cylinder (1). The inserts (28) are all fixedly connected to the inside of the arc-shaped block (33), and the inserts (28) are all inserted into the corresponding lower rectangular holes (29). When expanding the capacity, first take out the U-shaped connector (8), press the round rods (11) on both sides to slide into the round holes (31), and compress the telescopic springs (32). Then pull the U-shaped rods (10) outward. Then, the U-shaped connector (8) can be inserted into the upper rectangular hole (9) reserved on the outer wall of the monitoring cylinder (1), and the insert (28) can be inserted into the corresponding lower rectangular hole (29). Then, the U-shaped rod (10) can be pushed into the upper rectangular hole (9). Finally, when the round rod (11) is completely slid into the monitoring cylinder (1), the pressure on the top of the round rod (11) will be released, and then it will be pushed out under the elastic force of the telescopic spring (32) to complete the rapid expansion.

7. The karst collapse monitoring device of claim 5, wherein: The top ends of the upper rectangular hole (9) and the lower rectangular hole (29) are both inclined, the top end of the round rod (11) is set as a smooth arc surface, and a return spring (30) is fixedly connected between the inner side of the U-shaped rod (10) and the outer wall of the U-shaped connector (8). 8.The karst collapse monitoring device according to claim 2, characterized in that: The sides of the U-shaped connector (8) are all made of magnetic material, and the U-shaped insert (16), upper side plate (19) and lower side plate (21) are all made of iron.

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