A device for measuring surface subsidence in a coal mining area

Abstract

The utility model provides a kind of coal mining area surface subsidence measuring device, including measuring rod, the surface of measuring rod is slidably sleeved with connecting ring, the front of measuring rod is fixed with first measuring scale, the bottom of measuring rod is equipped with additional assembly, and the additional assembly includes additional column, the center top of additional column is equipped with hexagonal groove, and the center bottom of additional column is equipped with hexagonal block, multiple additional columns are connected by hexagonal block and hexagonal groove, the top of measuring rod is equipped with connecting assembly, and the connecting assembly includes top ring, and the bottom of top ring is fixed with winding seat equidistantly, the inside of winding seat is wound with pull rope, relative to prior art, additional assembly of the bottom of measuring rod is inserted into surface soil layer, measuring rod can be used to measure the subsidence value of surface surface, the additional column of additional assembly can measure the subsidence value of surface soil layer, and display by the top of measuring rod, convenient for artificial observation and record.

Description

Technical Field

[0001] This utility model relates to the field of measuring device technology, specifically a surface subsidence measuring device for coal mining areas. Background Technology

[0002] Surface subsidence in coal mining areas is a complex phenomenon involving multiple factors and causes. As coal mining progresses, the movement and destruction of underground rock masses gradually affect the surface, causing it to subside from its original elevation. As the goaf expands, the impact on the surface intensifies. In particular, when the center of the goaf is more than a certain critical distance from the surrounding boundaries, the rock strata above the center point will completely break and collapse, forming a caving zone, which in turn leads to severe ground subsidence and deformation. Mining also causes changes in groundwater flow, and the rise and fall of groundwater levels can also cause surface subsidence.

[0003] Patent CN222635487U proposes a measuring device for surface subsidence in coal mining areas. The device is installed on the surface of the soil in the coal mining area using a top column and a bottom column in conjunction with a positioning plate. The top column and bottom column are inserted into the soil layer through a sleeve, and an external screw is inserted into the inner rotating plate, causing the rotating plate to unfold and get stuck in different layers of soil. It performs embedded connection detection for different soil layers. When a collapse or hole falls in different soil layers, the movement pulls the bottom column down, triggering a pressure switch and an external flashing light to generate an audible and visual alarm. This helps to detect potential collapses or cavities in the underground soil layer in advance.

[0004] The shortcomings of the above solution are that it requires the use of pressure switches and external flashing lights for soil layers of different depths, which increases the cost of the device and makes it susceptible to damage from external environmental factors. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a surface settlement measuring device for coal mining areas to solve the problems mentioned in the background. This invention features a novel structure, with an additional component at the bottom of the measuring rod inserted into the surface soil layer. The measuring rod can be used to measure the settlement value of the surface, and the additional column of the additional component can measure the settlement value of the surface soil layer. The value is displayed on the top of the measuring rod, facilitating observation and recording by humans.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface settlement measuring device for coal mining areas, comprising a measuring rod, a connecting ring slidably sleeved on the surface of the measuring rod, a first measuring scale fixed on the front of the measuring rod, an additional component at the bottom of the measuring rod, the additional component comprising an additional column, a hexagonal groove at the top center of the additional column, and a hexagonal block at the bottom center of the additional column, multiple sets of the additional columns being interlocked with each other by the hexagonal block and the hexagonal groove, a connecting component at the top of the measuring rod, the connecting component comprising a top ring, a winding seat fixed equidistantly at the bottom of the top ring, a pull rope wound inside the winding seat, and the movable end of the pull rope being fixedly connected to the corresponding additional column.

[0007] Furthermore, the outer ring of the connecting ring has an annular groove, and two sliders are slidably installed in the groove of the connecting ring. A telescopic plate is provided between adjacent measuring rods, and the two ends of the telescopic plate are fixedly connected to the sliders in the two connecting rings.

[0008] Furthermore, the additional component also includes a perforation, with the surface of the additional post and the measuring rod having a perforation corresponding to the position of the winding seat, through which the pull rope passes.

[0009] Furthermore, a threaded ring is fixed to the top of one of the holes of the additional column, and a threaded head is rotatably installed at the bottom of the pull rope, the threaded head being threaded into the inside of the threaded ring.

[0010] Furthermore, a stud is threaded into the middle of the additional post, a hexagonal slot is formed on the top of the stud, a return spring is fixed at the bottom of the hexagonal slot, a contact plate is fixed at the top of the return spring, and the hexagonal block is fixed at the bottom of the stud.

[0011] Furthermore, the connecting assembly also includes a screw, which is threaded into the axis of the measuring rod, and a hexagonal block is also fixed to the bottom of the screw.

[0012] Furthermore, a second measuring ruler is fixed at the bottom of the top ring corresponding to the position of each winding seat, and the bottom of the second measuring ruler is fixedly connected to the measuring rod.

[0013] Furthermore, a sliding frame is slidably fitted onto the surface of the second measuring ruler, and the sliding frame is fixed to the pull rope.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model uses multiple sets of measuring rods connected to a telescopic plate via connecting rings and sliders, which can be adjusted according to the area to be measured to perform multi-point settlement testing.

[0016] 2. This utility model uses the snap-fit ​​of hexagonal blocks and hexagonal slots to drive the stud inside the auxiliary column to rotate, so that the stud passes out from the bottom of the auxiliary column and rotates to insert into the interior of the auxiliary column of the next set, forming a threaded connection, locking the measuring rod and the auxiliary column together, making it convenient to drill into the soil layer.

[0017] 3. This utility model utilizes the squeezing force between soil layers and the interlocking of hexagonal blocks and hexagonal grooves. Once settlement, stratification, and voids occur within the soil layer, the additional column where stratification occurs separates from the adjacent additional column through the contact plate and return spring. Pulling the pull rope moves the column, causing the position of the sliding frame on the second measuring ruler to change. By reading the changed value, the deep settlement value and the location where settlement begins can be determined.

[0018] 4. The additional column of this utility model is locked to the through-through pull rope by a screw ring and a threaded head, and is thus installed at the bottom of the measuring rod, which facilitates the measurement of the deep soil layer.

[0019] 5. Compared with the prior art, the present invention has an additional component at the bottom of the measuring rod inserted into the surface soil layer. The measuring rod can be used to measure the settlement value of the surface soil layer, and the additional column of the additional component can measure the settlement value of the surface soil layer. The value is displayed on the top of the measuring rod, which is convenient for human observation and recording. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front structure of a surface subsidence measurement device for coal mining areas according to the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the measuring rod of a surface subsidence measuring device for coal mining areas according to this utility model;

[0022] Figure 3 This is a schematic diagram of the connection component structure of a surface subsidence measurement device for coal mining areas according to the present invention;

[0023] Figure 4 This is a schematic diagram showing the connection between the additional column and the measuring rod of a surface settlement measuring device for coal mining areas according to this utility model.

[0024] Figure 5 This is a schematic diagram of the top structure of the additional column of a surface settlement measuring device in a coal mining area according to the present invention.

[0025] Figure 6 This is a schematic diagram showing the separation of the stud and the auxiliary column in a surface settlement measuring device for coal mining areas according to this utility model.

[0026] Figure 7 This is a schematic diagram of the internal structure of the hexagonal groove of a surface settlement measuring device for coal mining areas according to this utility model.

[0027] In the diagram: 1. Measuring rod; 11. Connecting ring; 12. Telescopic plate; 13. First measuring scale; 14. Sliding block; 2. Additional component; 21. Additional post; 22. Through hole; 23. Stud; 24. Hexagonal slot; 25. Hexagonal block; 26. Threaded ring; 27. Threaded head; 28. Return spring; 29. ​​Contact plate; 3. Connecting component; 31. Top ring; 32. Screw; 33. Rewind seat; 34. Second measuring scale; 35. Pull rope; 36. Sliding frame. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] Please see Figures 1 to 7 This utility model provides a technical solution: a surface settlement measuring device for coal mining areas, including a measuring rod 1, a connecting ring 11 slidably sleeved on the surface of the measuring rod 1, a first measuring ruler 13 fixed on the front of the measuring rod 1, an additional component 2 at the bottom of the measuring rod 1, the additional component 2 including an additional column 21, a hexagonal groove 24 at the top center of the additional column 21, and a hexagonal block 25 at the bottom center of the additional column 21, multiple sets of the additional columns 21 being interlocked with each other by the hexagonal block 25 and the hexagonal groove 24, and a connecting component at the top of the measuring rod 1. 3. The connecting component 3 includes a top ring 31, and a winding seat 33 is fixedly fixed at equal intervals at the bottom of the top ring 31. A pull rope 35 is wound inside the winding seat 33. The movable end of the pull rope 35 is fixedly connected to the corresponding auxiliary column 21. When using the device, the auxiliary component 2 is installed at the bottom of the measuring rod 1, and then drilled into the ground surface. The connecting ring 11 on the measuring rod 1 contacts the ground surface. The connecting ring 11 slides along the first measuring ruler 13 to measure the settlement value of the ground surface. The settlement value of the deep soil layer is measured through the auxiliary column 21 of the auxiliary component 2 and the pull rope 35 of the connecting component 3.

[0030] In this embodiment, the outer ring of the connecting ring 11 has an annular groove, and two sliders 14 are slidably installed in the groove of the connecting ring 11. A telescopic plate 12 is provided between adjacent measuring rods 1, and the two ends of the telescopic plate 12 are fixedly connected to the sliders 14 in the two connecting rings 11. Multiple sets of measuring rods 1 are connected to the telescopic plate 12 through the connecting rings 11 and sliders 14, and can be adjusted according to the area to be measured to perform multi-point test settlement values.

[0031] In this embodiment, the additional component 2 also includes a through hole 22. The surfaces of the additional column 21 and the measuring rod 1 are provided with through holes 22 at positions corresponding to the winding seat 33. The pull rope 35 passes through the through hole 22. A threaded ring 26 is fixed to the top of one of the through holes 22 of the additional column 21. A threaded head 27 is rotatably installed at the bottom of the pull rope 35. The threaded head 27 is threaded into the inside of the threaded ring 26. The additional column 21 is locked to the pull rope 35 through the threaded ring 26 and the threaded head 27, thereby being installed at the bottom of the measuring rod 1 to facilitate the measurement of the soil depth.

[0032] In this embodiment, a stud 23 is threaded into the middle of the additional post 21. A hexagonal slot 24 is formed on the top of the stud 23, and a return spring 28 is fixed to the bottom of the hexagonal slot 24. A contact plate 29 is fixed to the top of the return spring 28. A hexagonal block 25 is fixed to the bottom of the stud 23. The connecting assembly 3 also includes a screw 32. The screw 32 is threaded into the axis of the measuring rod 1, and a hexagonal block 25 is also fixed to the bottom of the screw 32. A second measuring scale 34 is fixed to the bottom of the top ring 31 corresponding to the position of each take-up seat 33, and the bottom of the second measuring scale 34 is fixedly connected to the measuring rod 1. A sliding frame 36 is slidably fitted onto the surface of 34, and the sliding frame 36 is fixed to the pull rope 35. Multiple sets of additional columns 21 are interconnected by hexagonal blocks 25 inserted into hexagonal slots 24 to form an elongated cylinder. At the same time, the through holes 22 of the driving screw ring 26 are staggered. After the pull rope 35 protruding from the measuring rod 1 is pulled, it is locked inside the screw ring 26 through the threaded head 27. The remaining pull ropes 35 pass through the through holes 22 of the additional columns 21 and are connected to the screw ring 26. Then, the sliding frame 36 is locked to the surface of the pull rope 35. Then, the screw 32 is rotated, and the screw 32 protrudes along the inside of the measuring rod 1. Through the engagement of the hexagonal blocks 25 and the hexagonal slots 24, the additional columns 21 are driven. The internal stud 23 rotates, causing it to pass through the bottom of the auxiliary post 21 and rotate into the interior of the next set of auxiliary posts 21, forming a threaded connection. This locks the measuring rod 1 and the auxiliary post 21 together, facilitating drilling into the soil. The auxiliary posts 21 are located at different soil depths. The threaded rod and stud 23 are then retracted, with the stud 23 returning to its respective auxiliary post 21. The auxiliary posts 21 are located within the soil layer. Through the pressure between soil layers and the engagement of the hexagonal block 25 and hexagonal groove 24, if settlement, stratification, or voids occur within the soil layer, the stratified auxiliary post 21 is contacted by the contact plate 29 and the return spring 28 with the adjacent... The additional column 21 separates, and the pull rope 35 moves, causing the sliding frame 36 to change position on the second measuring ruler 34. By reading the changed value, the deep settlement value and the starting position of settlement can be obtained. Here, it is assumed that the additional column 21 is a relatively short and light structural component, so it can be stopped by the elastic force of the return spring 28. The upper and lower ends of the additional column 21, the stud 23, and the hexagonal block 25 have a certain elastic layer, which is not shown in the figure. The deformation of the elastic layer can not affect the position of the other additional columns 21 in the soil layer, so that a certain displacement of a single additional column 21 is generated, which is indicated by the pull rope 35 and the second measuring ruler 34.

[0033] When using the device, the additional component 2 is installed at the bottom of the measuring rod 1, and then drilled into the ground surface. The connecting ring 11 on the measuring rod 1 contacts the ground surface. The connecting ring 11 slides along the first measuring scale 13 to measure the ground surface settlement. Multiple sets of additional columns 21 are interconnected by hexagonal blocks 25 inserted into hexagonal slots 24 to form an elongated cylinder. Simultaneously, the through holes 22 of the driving screw ring 26 are staggered. The pull rope 35 extending from the measuring rod 1 is pulled and locked inside the screw ring 26 through the threaded head 27. The remaining pull ropes 35 pass through the through holes 22 of the upper additional column 21 and connect to the screw ring 26. Then, the sliding frame 36 is locked to the surface of the pull rope 35. The screw 32 is then rotated, extending through the interior of the measuring rod 1. Through the engagement of the hexagonal blocks 25 and hexagonal slots 24, the screw 23 inside the additional column 21 rotates, causing the screw 23 to emerge from the bottom of the additional column 21 and rotate into the next set. Inside the additional column 21, a threaded connection is formed, locking the measuring rod 1 and the additional column 21 together for easy drilling into the soil. The additional column 21 is located at different soil depths. Then, the threaded rod and stud 23 are retracted, and the stud 23 returns to its respective additional column 21. The additional column 21 is located inside the soil. Through the squeezing force between the soil layers and the locking of the hexagonal block 25 and hexagonal groove 24, once settlement stratification and voids occur inside the soil layer, the additional column 21 that has stratified is separated from the adjacent additional column 21 through the contact plate 29 and the return spring 28, and the pull rope 35 is pulled to move, so that the position of the sliding frame 36 on the second measuring ruler 34 changes. By reading the changed value, the deep settlement value and the starting position of settlement can be known. Multiple sets of measuring rods 1 are connected to the telescopic plate 12 through the connecting ring 11 and the slider 14, which can be adjusted according to the area to be measured to perform multi-point test settlement values.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0035] 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 surface subsidence measuring device for coal mining areas, comprising a measuring rod (1), characterized in that: A connecting ring (11) is slidably sleeved on the surface of the measuring rod (1). A first measuring ruler (13) is fixed on the front of the measuring rod (1). An additional component (2) is provided at the bottom of the measuring rod (1). The additional component (2) includes an additional column (21). A hexagonal groove (24) is provided at the top center of the additional column (21), and a hexagonal block (25) is provided at the bottom center of the additional column (21). Multiple sets of the additional columns (21) are connected to each other by the hexagonal block (25) and the hexagonal groove (24). A connecting component (3) is provided at the top of the measuring rod (1). The connecting component (3) includes a top ring (31). A winding seat (33) is fixed at equal intervals around the bottom of the top ring (31). A pull rope (35) is wound inside the winding seat (33). The movable end of the pull rope (35) is fixedly connected to the corresponding additional column (21).

2. The surface subsidence measuring device for coal mining areas according to claim 1, characterized in that: The outer ring of the connecting ring (11) has an annular groove, and two sliders (14) are slidably installed in the groove of the connecting ring (11). A telescopic plate (12) is provided between adjacent measuring rods (1), and the two ends of the telescopic plate (12) are fixedly connected to the sliders (14) in the two connecting rings (11).

3. The surface subsidence measuring device for coal mining areas according to claim 1, characterized in that: The additional component (2) also includes a perforation (22), and the surfaces of the additional post (21) and the measuring rod (1) are provided with perforations (22) at positions corresponding to the winding seat (33), and the pull rope (35) passes through the perforation (22).

4. The surface subsidence measuring device for coal mining areas according to claim 3, characterized in that: A threaded ring (26) is fixed to the top of one of the holes (22) of the additional post (21), and a threaded head (27) is rotatably installed on the bottom of the pull rope (35), the threaded head (27) being threaded into the inside of the threaded ring (26).

5. The surface subsidence measuring device for coal mining areas according to claim 4, characterized in that: The additional post (21) has a stud (23) inserted into its middle thread. The hexagonal groove (24) is opened on the top of the stud (23), and a return spring (28) is fixed at the bottom of the hexagonal groove (24). A contact plate (29) is fixed on the top of the return spring (28), and the hexagonal block (25) is fixed at the bottom of the stud (23).

6. The surface subsidence measuring device for coal mining areas according to claim 1, characterized in that: The connecting assembly (3) also includes a screw (32), which is threaded into the axis of the measuring rod (1), and a hexagonal block (25) is also fixed to the bottom of the screw (32).

7. A surface subsidence measuring device for coal mining areas according to claim 6, characterized in that: The bottom of the top ring (31) is fixed with a second measuring ruler (34) corresponding to the position of each winding seat (33), and the bottom of the second measuring ruler (34) is fixedly connected to the measuring rod (1).

8. A surface subsidence measuring device for coal mining areas according to claim 7, characterized in that: A sliding frame (36) is slidably fitted onto the surface of the second measuring ruler (34), and the sliding frame (36) is fixed on the pull rope (35).

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