A device and method for measuring roof separation in a mine goaf

Abstract

The invention relates to the technical field of measuring devices, and proposes a mine goaf roof separation measuring device and a measuring method thereof, which can realize large-scale single-point detection, and the large-scale mine goaf roof separation can ensure effective monitoring while greatly reducing the number of measuring devices required, and has good practicality and feasibility. The invention comprises a main mechanism and an expansion mechanism, and the main mechanism comprises an installation shell, an installation inner cavity is provided in the installation shell, a middle plate frame is arranged in the installation inner cavity, and a plurality of elastic springs are connected between the middle plate frame and the installation inner cavity, a plurality of side installation grooves are provided on the installation shell, a installation cover body is fixedly connected to the installation shell, a plurality of side installation blocks are arranged on the installation cover body, and the plurality of side installation blocks are respectively matched with the plurality of side installation grooves, and a detection cavity is provided on the installation shell, a pressure sensor is installed in the detection cavity, and the pressure sensor is equipped with a driving frame, and the driving frame is slidably connected in the detection cavity.

Description

Technical Field

[0001] The invention relates to the technical field of measuring devices, and in particular to a device for measuring roof separation in a mine goaf area and a measuring method thereof. Background Art

[0002] As we all know, in the process of mining such as gold mining, mine goafs will be generated. Mine goaf roof delamination refers to the phenomenon that during the mining process such as gold mining, with the continuous mining of minerals, the pressure of the upper rock layer is gradually transferred to the roof, causing the roof to deform and delaminate. The delamination phenomenon not only affects the safe production of the mine, but also may cause safety hazards to the surrounding environment. For this reason, we propose a mine goaf roof delamination measurement device and a measurement method.

[0003] After searching, the Chinese patent application number CN202122570504.5 discloses an underground goaf roof deformation monitoring device, which is roughly described as comprising a main body mechanism, a disassembly mechanism is arranged inside the main body mechanism, the main body mechanism comprises a first transparent cylinder, a bottom plate is fixedly installed at the bottom of the first transparent cylinder, a cover plate is threadedly connected to the top of the first transparent cylinder, a plurality of second transparent cylinders arranged horizontally are arranged on the outer circumferential wall of the first transparent cylinder, the first transparent cylinder and the second transparent cylinder are arranged in a hollow shape, and the first transparent cylinder and the second transparent cylinder are arranged in a hollow shape. The cylinders are arranged in a mutually connected state, and two water stop plates are arranged on the inner wall of the second transparent cylinder. When in use, the bottom plate is first fixedly installed on the top plate, and then the push rod is pushed downward, and the sliding sleeve is driven to move downward on the outer wall of the limit rod through the first connecting seat, so that the limit rod is elastically deformed and drives the limit rod to shrink toward the push rod, and the waterproof sealing plug is pulled out from the inner cavity of the second transparent cylinder, so that the water in the inner cavity of the first transparent cylinder flows into the inner cavity of the second transparent cylinder, and the horizontal plane remains calm at the water stop plate. Later, when the top plate is deformed and skewed, the water in the second transparent cylinder The inner cavity overflows toward the skewed side, so that the color-changing silicone strip arranged in the second transparent cylinder changes color after contacting water, thereby facilitating intuitive indication of whether the roof is deformed and skewed. At the same time, the patent with application number CN202310014463.2 discloses a laser measuring device for the roof of a mine goaf, which mainly includes a support column and an annular shell rotatably connected to the upper surface of the support column. A first scanner for scanning the roof of the goaf is arranged on the outer side of the annular shell, and a driving mechanism for driving the annular shell and the first scanner to rotate intermittently is arranged on the outer side of the support column. By setting the driving mechanism, the annular shell and the first scanner are driven to rotate intermittently, so that the first scanner scans the roof of the goaf; by setting the roof scanning mechanism, the first scanner is driven to move back and forth in the horizontal direction after each rotation of the first scanner, so that the first scanner can perform a comprehensive scan of the roof of the goaf; by setting the side wall scanning mechanism, the second scanner is driven to move back and forth in the vertical direction to scan the side wall of the goaf.

[0004] Although the above-mentioned existing technical solutions can realize the measurement of the deformation of the roof of the underground goaf, in actual situations, the overall space of the mine goaf is huge, and therefore the corresponding mine goaf roof is also large in size. Therefore, if a similar underground goaf roof deformation monitoring device and a mine goaf roof laser measuring device as described above are used for detection, a large amount of equipment is inevitably required, and it is installed relative to the detection position. Because of the large number of detection points, a large amount of data needs to be processed during actual detection, and both practicality and feasibility need to be further improved. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a device and method for measuring the roof detachment in a mine goaf, which can realize large-scale single-point detection. The number of measuring devices required for the roof detachment in a large-scale mine goaf can be greatly reduced while ensuring effective monitoring, and the detection data that needs to be processed is also further optimized, with good practicality and feasibility.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for measuring the delamination of the roof of a mine goaf, comprising a main body mechanism, the main body mechanism is equipped with an expansion mechanism outside, the main body mechanism comprises an installation shell, an installation inner cavity is provided in the installation shell, a middle plate frame is provided in the installation inner cavity, and a plurality of elastic springs are connected between the middle plate frame and the installation inner cavity, a plurality of side installation grooves are provided on the installation shell, the installation shell is fixedly connected with an installation cover body, a plurality of side installation blocks are provided on the installation cover body, the plurality of side installation blocks are respectively matched with the plurality of side installation grooves, and a detection cavity is provided on the installation shell. A pressure sensor and a driving frame matching the pressure sensor are installed in the detection chamber, and a reset spring is connected between the driving frame and the detection chamber, a linkage rope is fixedly connected to the top of the driving frame, and a linkage rod is fixedly connected to the rope end of the linkage rope away from the driving frame, the linkage rod matches the middle disk frame, an expansion ring is arranged on the linkage rod, and an assembly block for limiting the expansion ring installation is fixedly connected in the detection chamber, a gap hole for the linkage rod to pass through is arranged on the assembly block, the inner diameter of the gap hole is larger than the outer diameter of the linkage rod and smaller than the outer diameter of the expansion ring, and a main anchor rod assembly is arranged on the top of the mounting shell.

[0008] Furthermore, the expansion mechanism includes multiple detection ropes, and multiple ends of the detection ropes close to the middle plate frame are fixedly connected to a spherical body, and multiple spherical bodies are respectively located in multiple side mounting grooves, and multiple side mounting grooves are each provided with a lower half groove, and multiple side mounting blocks are each provided with an upper half groove, and multiple upper half grooves are respectively used to limit the relative positions of multiple spherical bodies in multiple lower half grooves, respectively, and multiple spherical bodies are fixedly connected to an inner connecting rope, and multiple inner connecting ropes are fixedly connected to the middle plate frame, and multiple ends of the detection ropes away from the middle plate frame can be detachably installed with an auxiliary anchor rod assembly.

[0009] Furthermore, the main anchor rod assembly includes a main sleeve and a main screw, and the main screw is threadedly connected in the main sleeve. The multiple auxiliary anchor rod assemblies each include an auxiliary sleeve and an auxiliary screw, and the multiple auxiliary screws are respectively threadedly connected in the multiple auxiliary sleeves. The main screw and the multiple auxiliary screws are rotatably connected with multiple conical blocks, and the main sleeve and the multiple auxiliary sleeves are each provided with multiple internal push-up blocks matching the conical blocks. The main screw and the multiple auxiliary sleeves are detachably installed between the main screw and the mounting shell, and the multiple auxiliary screws are fixedly connected with a hanging ring for connecting the detection rope. The main sleeve and the multiple auxiliary sleeves are each provided with multiple slots, and the outside of the main sleeve and the multiple auxiliary sleeves are provided with spiral patterns.

[0010] Furthermore, the main screw is fixedly connected to a rotating sleeve, an embedding groove is provided in the rotating sleeve, a sliding sleeve is rotatably connected in the embedding groove, a sliding block is slidably matched in the sliding sleeve, the sliding block is fixedly connected to the mounting shell, a notch groove is provided outside the rotating sleeve, the notch groove is communicated with the embedding groove, by rotating the sliding sleeve relative to the rotating sleeve so that the track groove in the sliding sleeve and the notch groove are aligned and communicated, the sliding block can slide in and out relative to the sliding sleeve, and by rotating the sliding sleeve relative to the rotating sleeve so that the track groove in the sliding sleeve and the notch groove are relatively misaligned, the sliding block cannot slide in and out relative to the sliding sleeve.

[0011] Furthermore, the plurality of spherical bodies are all equipped with circular rings, the plurality of circular rings are all fixedly connected with auxiliary springs, the plurality of auxiliary springs are respectively fixedly connected in the plurality of lower half grooves, the plurality of spherical bodies are all fixedly connected with protective covers, and the plurality of protective covers are respectively mounted on the plurality of detection ropes.

[0012] Furthermore, a central through hole is provided in the middle plate frame, and two cross rods are fixedly connected in the central through hole. The two cross rods are cross-fixedly connected, and a cross groove is provided at the top end of the linkage rod, and the two cross rods are matched and inserted into the cross groove.

[0013] Furthermore, the plurality of internal connecting ropes are fixedly connected with connecting parts, the plurality of connecting parts are provided with connecting holes, the plurality of connecting holes are provided with connecting bolts, the middle plate frame is provided with threaded grooves, and the plurality of connecting bolts are respectively threadedly connected in the plurality of threaded grooves.

[0014] Furthermore, the plurality of connecting members are all fixedly connected with arc hook plates, a plurality of hooking protruding circular surfaces are arranged in the middle plate frame, and the plurality of arc hook plates are matched with the plurality of hooking protruding circular surfaces respectively.

[0015] Furthermore, a power quick connector and a plurality of data line quick connectors are installed at the bottom end of the installation cover, and the power quick connector and the plurality of data line quick connectors are electrically connected to the pressure sensor.

[0016] A method for measuring roof separation in a mine goaf area comprises the following steps:

[0017] S1. When in use, firstly, according to the specific position of the roof of the mine goaf, the points are marked to determine the specific installation positions of the main anchor rod assembly and the auxiliary anchor rod assembly, and then the anchor holes are drilled and opened relative to the points found by the marked lines. After the opening is completed, the main anchor rod assembly and the auxiliary anchor rod assembly are respectively inserted and fixed;

[0018] S2. After the main anchor rod assembly and the auxiliary anchor rod assembly are installed relative to the mine goaf roof, the main mechanism is installed. When the main mechanism is installed, it is only necessary to align the installation shell with the main anchor rod assembly, and then the multiple linkage ropes drawn out from the main mechanism are respectively connected relative to the multiple auxiliary anchor rod assemblies, thus completing the structural installation of the mine goaf roof separation measurement device;

[0019] S3. After that, external power lines and signal lines are installed for the main mechanism to realize the power supply and detection signal output of the pressure sensor in the main mechanism. During the actual operation, when the roof of the mine goaf delamination undergoes structural sinking, the changed area will cause the detection rope corresponding to the area to be tightened and pulled, so that the traction of the middle plate frame is realized through the traction transmission of the sphere, the internal rope and the connecting piece, causing the relative position of the middle plate frame to change in the installation cavity. The middle plate frame with changed position will convert its own position change into pressure drive acting on the pressure sensor through the transmission action of the linkage rod, the linkage rope and the driving frame;

[0020] S4. The pressure sensor is subjected to the pressure drive of the driving frame and converts the pressure drive into the detection value output of the pressure sensor itself. By monitoring the output pressure value, the measurement and real-time monitoring of the roof of the mine goaf area are realized.

[0021] Compared with the prior art, the present invention provides a device and method for measuring roof separation in a mine goaf area, which has the following beneficial effects:

[0022] (1) In the present invention, the main measuring structure of the mine goaf roof separation measuring device is formed through the design of the main mechanism, which ensures the data quantification and reading during the measurement process.

[0023] (2) In the present invention, through the design of the expansion mechanism, the supporting main body mechanism can realize large-scale single-point detection. The number of measuring devices required for roof separation in the mine goaf area is greatly reduced while ensuring effective monitoring, and the detection data that needs to be processed is also further optimized.

[0024] (3) In the present invention, the main anchor rod assembly is matched to realize the adaptive installation of the main structure relative to the top plate of the mine goaf, and the auxiliary anchor rod assembly is designed to realize the adaptive installation of multiple detection ropes relative to the top plate of the mine goaf, which facilitates the erection and construction of the basic detection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0027] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0028] Figure 4 It is a schematic diagram of an exploded three-dimensional structure of the mounting shell, the mounting cover and the rotating sleeve of the present invention;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the detection rope, the sphere and the inscribed rope of the present invention;

[0030] Figure 6 It is a schematic diagram of an exploded three-dimensional structure of the pressure sensor, the driving frame and the return spring of the present invention;

[0031] Figure 7 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above;

[0032] Figure 8 It is a schematic diagram of the exploded three-dimensional structure of the installation shell, the middle plate frame and the rotating sleeve of the present invention;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the spherical body, the inner rope and the connecting piece of the present invention;

[0034] Fig.10 It is a partially cutaway three-dimensional structural schematic diagram of the cooperation of the mounting shell, the mounting cover and the rotating sleeve of the present invention;

[0035] Fig.11 For the present invention Fig.10 A schematic diagram of the local enlarged structure at C in the middle;

[0036] Fig.12 It is a schematic diagram of a partially exploded three-dimensional structure of the main sleeve, main screw and conical block of the present invention.

[0037] In the figure: 1. Mounting shell; 2. Mounting inner cavity; 3. Middle plate frame; 4. Elastic spring; 5. Side mounting groove; 6. Mounting cover; 7. Side mounting block; 8. Detection cavity; 9. Pressure sensor; 10. Driving frame; 11. Reset spring; 12. Linkage rope; 13. Linkage rod; 14. Detection rope; 15. Sphere; 16. Lower half groove; 17. Upper half groove; 18. Internal rope; 19. Main sleeve; 20. Main screw; 21. Auxiliary sleeve; 22. Auxiliary screw; 23. Conical block; 24 , inner push-up block; 25, hanging ring; 26, slit groove; 27, spiral pattern; 28, rotating sleeve; 29, embedded groove; 30, sliding sleeve; 31, sliding block; 32, notched groove; 33, circular ring; 34, auxiliary spring; 35, protective sleeve; 36, middle through hole; 37, cross rod; 38, cross groove; 39, connecting piece; 40, connecting hole; 41, connecting bolt; 42, threaded groove; 43, arc hook plate; 44, raised round surface; 45, power quick connector; 46, data cable quick connector. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example

[0040] See also Figure 1-Figure 12A device for measuring the delamination of the roof of a mining goaf area comprises a main body mechanism, which is equipped with an expansion mechanism outside the main body mechanism, the main body mechanism comprises an installation shell 1, an installation inner cavity 2 is provided in the installation shell 1, a middle plate frame 3 is provided in the installation inner cavity 2, and a plurality of elastic springs 4 are connected between the middle plate frame 3 and the installation inner cavity 2, a plurality of side installation grooves 5 are provided on the installation shell 1, the installation shell 1 is fixedly connected with an installation cover body 6, a plurality of side installation blocks 7 are provided on the installation cover body 6, and the plurality of side installation blocks 7 are respectively matched with the plurality of side installation grooves 5, a detection cavity 8 is provided on the installation shell 1, a pressure sensor 9 is installed in the detection cavity 8, the pressure sensor 9 is equipped with a driving frame 10, the driving frame 10 is slidably connected in the detection cavity 8, and a reset spring 11 is connected between the driving frame 10 and the detection cavity 8, and the top of the driving frame 10 is fixedly connected with A linkage rope 12, the rope end of the linkage rope 12 away from the driving frame 10 is fixedly connected with a linkage rod 13, the linkage rod 13 matches the middle plate frame 3, a middle through hole 36 is arranged in the middle plate frame 3, two cross rods 37 are fixedly connected in the middle through hole 36, the two cross rods 37 are cross-fixedly connected, a cross groove 38 is opened at the top of the linkage rod 13, the two cross rods 37 are matched and inserted into the cross groove 38, an expansion ring is arranged on the linkage rod 13, and an assembly block for the expansion ring installation limit is fixedly connected in the detection cavity 8, a gap hole for the linkage rod 13 to pass through is arranged on the assembly block, the inner diameter of the gap hole is larger than the outer diameter of the linkage rod 13 and smaller than the outer diameter of the expansion ring, and the main measurement structure of the mine goaf roof delamination measurement device is formed through the design of the main mechanism to ensure the data quantification and reading during the measurement process.

[0041] It should be further explained that the expansion mechanism includes a plurality of detection ropes 14, and a spherical body 15 is fixedly connected to one end of the plurality of detection ropes 14 close to the middle plate frame 3, and the plurality of spherical bodies 15 are fixedly connected to a protective sleeve 35, and the plurality of protective sleeves 35 are respectively mounted on the plurality of detection ropes 14, so as to improve the anti-bending effect of the connection between the protective sleeve 35 and the detection rope 14, reduce the influence caused by bending, and ensure the reliability of the connection, and the plurality of spherical bodies 15 are respectively located in the plurality of side mounting grooves 5, and the plurality of side mounting grooves 5 are respectively provided with a lower half groove 16, and the plurality of side mounting blocks 7 are respectively provided with an upper half groove 17, and the plurality of upper half grooves 17 are respectively used to limit the relative positions of the plurality of spherical bodies 15 in the plurality of lower half grooves 16, and the plurality of spherical bodies 15 are fixedly connected to an inner connecting rope 18, and the plurality of inner connecting ropes 18 are fixedly connected to the middle plate frame 3, and the plurality of inner connecting ropes 18 are fixedly connected to a connecting piece 39, and the plurality of connecting pieces 39 are provided with a connecting hole 40, Each connecting hole 40 is provided with a connecting bolt 41, a threaded groove 42 is provided in the middle plate frame 3, and multiple connecting bolts 41 are respectively threadedly connected in the multiple threaded grooves 42, and multiple connecting parts 39 are fixedly connected with arc hook plates 43, and multiple hooking protruding circular surfaces 44 are provided in the middle plate frame 3. Multiple arc hook plates 43 are matched with multiple hooking protruding circular surfaces 44 respectively. Through the design of the surface expansion mechanism, the supporting main body mechanism can realize large-scale single-point detection, and the number of measuring devices required for the roof separation in the mine goaf area is greatly reduced while ensuring effective monitoring, and the detection data that needs to be processed is also further optimized. Multiple spheres 15 are all equipped with rings 33, and multiple rings 33 are fixedly connected with auxiliary springs 34. Multiple auxiliary springs 34 are respectively fixedly connected in multiple lower half grooves 16, which is convenient for maintaining the position of the sphere 15. When the pulling effect of the detection rope 14 on the sphere 15 fails, the sphere 15 can be reset under the pushing action of the auxiliary spring 34.

[0042] It should be further explained that the ends of the multiple detection ropes 14 away from the middle plate frame 3 can be detachably installed with auxiliary anchor rod assemblies, and the top of the mounting shell 1 is provided with a main anchor rod assembly, the main anchor rod assembly includes a main sleeve 19 and a main screw 20, the main screw 20 is threadedly connected in the main sleeve 19, and the multiple auxiliary anchor rod assemblies include auxiliary sleeves 21 and auxiliary screws 22, and the multiple auxiliary screws 22 are respectively threadedly connected in the multiple auxiliary sleeves 21, and the main screw 20 and the multiple auxiliary screws 22 are rotatably connected with multiple conical blocks 23, and the main sleeve 19 and the multiple A plurality of inner push-up blocks 24 matching the conical blocks 23 are arranged in the auxiliary sleeves 21, the main screw 20 and the mounting housing 1 are detachably mounted, the plurality of auxiliary screws 22 are fixedly connected with a connecting ring 25 for connecting the detection rope 14, the main sleeve 19 and the plurality of auxiliary sleeves 21 are provided with a plurality of slots 26, the main sleeve 19 and the plurality of auxiliary sleeves 21 are provided with spiral patterns 27, the main screw 20 is fixedly connected with a rotating sleeve 28, the rotating sleeve 28 is provided with an embedded groove 29, the embedded groove 29 is rotatably connected with a sliding sleeve 30, and the sliding sleeve 30 is rotatably connected with the sliding sleeve 30. The connecting sleeve 30 is slidably matched with a sliding block 31, and the sliding block 31 is fixedly connected to the mounting housing 1. A notch groove 32 is provided on the outside of the rotating sleeve 28, and the notch groove 32 is communicated with the embedding groove 29. By rotating the sliding sleeve 30 relative to the rotating sleeve 28, the track groove in the sliding sleeve 30 is aligned with the notch groove 32, and the sliding block 31 can slide in and out relative to the sliding sleeve 30. By rotating the sliding sleeve 30 relative to the rotating sleeve 28, the track groove in the sliding sleeve 30 is relatively misaligned with the notch groove 32, and the sliding block 31 cannot be relative to the sliding sleeve 30. The sleeve 30 slides in and out, and through the matching of the main anchor rod assembly, the adaption installation of the main structure relative to the top plate of the mine goaf is realized. Through the design of the auxiliary anchor rod assembly, the adaption installation of multiple detection ropes 14 relative to the top plate of the mine goaf is realized, which facilitates the installation of the basic detection structure. The bottom end of the installation cover 6 is installed with a power quick connector 45 and multiple data line quick connectors 46. The power quick connector 45 and the multiple data line quick connectors 46 are all electrically connected to the pressure sensor 9, which is convenient for connection with the external power supply and data receiving device.

[0043] The power quick connector 45, data line quick connector 46 and pressure sensor 9 in this embodiment are all conventional devices purchased on the market and known to those skilled in the art. In the present invention, we only use them without improving their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method can be debugged and operated according to the requirements of their instruction manual, and will not be described in detail here.

[0044] To sum up, the working process of the mine goaf roof delamination measuring device is as follows: when in use, firstly, according to the specific position of the mine goaf roof, points are marked to determine the specific installation positions of the main anchor assembly and the auxiliary anchor assembly, and then the anchor holes are drilled and opened relative to the points found by the marked lines. After the opening is completed, the main anchor assembly and the auxiliary anchor assembly are inserted and fixed respectively. The main anchor assembly is fixed in a manner that the main screw 20 is rotated relative to the main sleeve 19 so that the conical block 23 on the main screw 20 first forms mutual contact with the inner push block 24 in the main sleeve 19 and then forms a mutual pushing effect, thereby realizing the expansion of the outer wall of the main sleeve 19, so that the outer wall of the expanded main sleeve 19 forms a relatively tight positioning relative to the corresponding inserted anchor hole. [1] Similarly, the auxiliary anchor rod assembly is fixed in a manner that the auxiliary screw 22 is rotated relative to the auxiliary sleeve 21, so that the conical block 23 on the auxiliary screw 22 first forms a contact with the inner push block 24 in the auxiliary sleeve 21 and then forms a mutual pushing effect, thereby achieving the relative bracing and positioning of the auxiliary sleeve 21 relative to the corresponding inserted anchor hole. After the main anchor rod assembly and the auxiliary anchor rod assembly are installed relative to the top plate of the mine goaf, the main mechanism is installed. When the main mechanism is installed, it is only necessary to form a counter-position installation of the installation shell 1 relative to the main anchor rod assembly. The installation process is to rotate the sliding sleeve 30 relative to the rotating sleeve 28 so that the track groove in the sliding sleeve 30 is aligned with the track groove in the sliding sleeve 30. The notched grooves 32 are aligned and connected. In this state, the sliding block 31 can be slid into the sliding sleeve 30, and then the sliding sleeve 30 is rotated relative to the rotating sleeve 28 to make the track groove in the sliding sleeve 30 and the notched groove 32 relatively misaligned. The sliding block 31 cannot slide out relative to the sliding sleeve 30, so that the installation shell 1 can be installed in alignment with the main anchor rod assembly, and then the multiple linkage ropes 12 led out from the main body mechanism are respectively connected relative to the multiple auxiliary anchor rod assemblies, thus completing the structural installation of the mine goaf roof delamination measuring device. In this installation process, it is only necessary to form a relative binding connection between the detection rope 14 and the hanging ring 25.

[0045] Furthermore, external power lines and signal lines are installed for the main mechanism to realize the power supply and detection signal output of the pressure sensor 9 in the main mechanism. During the actual operation, when the roof of the mine goaf delamination undergoes structural sinking changes, the changed area will cause the detection rope 14 corresponding to the area to be tightened and pulled, so that the traction of the middle plate frame 3 is realized through the traction transmission of the sphere 15, the internal rope 18 and the connecting piece 39, causing the middle plate frame 3 to change its relative position in the installation cavity 2. The middle plate frame 3 with changed position will convert its own position change into pressure drive acting on the pressure sensor 9 through the transmission action of the linkage rod 13, the linkage rope 12 and the driving frame 10. The pressure sensor 9 bears the pressure drive of the driving frame 10 and converts the pressure drive into the detection value output of the pressure sensor 9 itself. The measurement and real-time monitoring of the roof of the mine goaf are realized by monitoring the output pressure value. The effective detection range of a single mine goaf roof delamination measuring device can be achieved by controlling and setting the length of the detection rope 14, and as the detection range increases, it should be appropriate When the number of detection ropes 14 is controlled to ensure that the detection ropes 14 have a good coverage effect on the detected area, multiple mine goaf roof separation measurement devices are installed in an overlapping manner, that is, the detection ropes 14 in two adjacent mine goaf roof separation measurement devices are inserted into each other in a staggered manner, so that full coverage measurement and detection of the mine goaf roof can be achieved. In order to improve the detection accuracy, a tension sensor can be further installed on the corresponding detection rope 14. The pressure sensor 9 is the parent detection point, and the tension sensor is the child detection point. Under normal circumstances, only the data of the parent detection point, i.e., the pressure sensor 9, is read, and the tension sensor of the child detection point is in a power-off and silent state. Only when the detection data of the parent detection point, i.e., the pressure sensor 9, deviates abnormally, the next-level tension sensor of the corresponding parent detection point is powered on and the tension data is detected, so as to realize the discrimination and determination of the corresponding detection rope 14 that bears the tension, thereby achieving the accurate determination of the corresponding sinking change area on the mine goaf roof separation, optimizing the management method and facilitating the realization of precise management.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the roof separation of a mine goaf, comprising a main body, characterized in that: The main body mechanism is provided with an expansion mechanism on the outside, and the main body mechanism comprises a mounting shell (1), a mounting inner cavity (2) is provided in the mounting shell (1), a middle plate frame (3) is provided in the mounting inner cavity (2), and a plurality of elastic springs (4) are connected between the middle plate frame (3) and the mounting inner cavity (2), a plurality of side mounting grooves (5) are provided on the mounting shell (1), a mounting cover body (6) is fixedly connected to the mounting shell (1), a plurality of side mounting blocks (7) are provided on the mounting cover body (6), and the plurality of side mounting blocks (7) are matched with the plurality of side mounting grooves (5) respectively, and a detection cavity (8) is provided on the mounting shell (1), and a pressure sensor (9) and a pressure sensor (9) are installed in the detection cavity (8). A drive frame (10) is matched with the device (9), and a reset spring (11) is connected between the drive frame (10) and the detection chamber (8). A linkage rope (12) is fixedly connected to the top of the drive frame (10), and a rope end of the linkage rope (12) away from the drive frame (10) is fixedly connected to a linkage rod (13), and the linkage rod (13) matches the middle plate frame (3). An expansion ring is provided on the linkage rod (13), and an assembly block for mounting and limiting the expansion ring is fixedly connected in the detection chamber (8). A gap hole for the linkage rod (13) to pass through is provided on the assembly block, and the inner diameter of the gap hole is larger than the outer diameter of the linkage rod (13) and smaller than the outer diameter of the expansion ring. A main anchor rod assembly is provided at the top of the installation shell (1).

2. A device for measuring the separation of roof in a mine goaf according to claim 1, characterized in that: The surface expansion mechanism comprises a plurality of detection ropes (14), each of the ends of the plurality of detection ropes (14) close to the middle plate frame (3) is fixedly connected to a spherical body (15), each of the plurality of spherical bodies (15) is located in a plurality of side mounting grooves (5), and each of the plurality of side mounting grooves (5) is provided with a lower half groove (16), each of the plurality of side mounting blocks (7) is provided with an upper half groove (17), and each of the plurality of upper half grooves (17) is used to limit the relative positions of the plurality of spherical bodies (15) in the plurality of lower half grooves (16), each of the plurality of spherical bodies (15) is fixedly connected to an inner connecting rope (18), and each of the plurality of inner connecting ropes (18) is fixedly connected to the middle plate frame (3), and each of the ends of the plurality of detection ropes (14) away from the middle plate frame (3) is detachably provided with an auxiliary anchor rod assembly.

3. A device for measuring the separation of roof in a mine goaf according to claim 2, characterized in that: The main anchor rod assembly comprises a main sleeve (19) and a main screw (20), wherein the main screw (20) is threadedly connected in the main sleeve (19), and the plurality of auxiliary anchor rod assemblies each comprise an auxiliary sleeve (21) and an auxiliary screw (22), wherein the plurality of auxiliary screws (22) are respectively threadedly connected in the plurality of auxiliary sleeves (21), and the main screw (20) and the plurality of auxiliary screws (22) are both rotatably connected with a plurality of conical blocks (23), and the main sleeve (19) and the plurality of auxiliary sleeves (21) are provided with a plurality of conical blocks (23). A plurality of inner push-up blocks (24) matching the conical blocks (23) are arranged inside the main screw (20) and the mounting shell (1), the main screw (20) and the mounting shell (1) are detachably mounted, the plurality of auxiliary screws (22) are fixedly connected with a connecting ring (25) for connecting the detection rope (14), a plurality of slots (26) are provided on the main sleeve (19) and the plurality of auxiliary sleeves (21), and spiral patterns (27) are provided on the outside of the main sleeve (19) and the plurality of auxiliary sleeves (21).

4. A device for measuring separation of roof in a mine goaf according to claim 3, characterized in that: The main screw (20) is fixedly connected to a rotating sleeve (28), an embedding groove (29) is provided in the rotating sleeve (28), a sliding sleeve (30) is rotatably connected in the embedding groove (29), a sliding block (31) is slidably matched in the sliding sleeve (30), the sliding block (31) is fixedly connected to the mounting housing (1), a notch groove (32) is provided outside the rotating sleeve (28), the notch groove (32) is communicated with the embedding groove (29), by rotating the sliding sleeve (30) relative to the rotating sleeve (28), so that the track groove in the sliding sleeve (30) and the notch groove (32) are aligned and communicated, the sliding block (31) can slide in and out relative to the sliding sleeve (30), by rotating the sliding sleeve (30) relative to the rotating sleeve (28), so that the track groove in the sliding sleeve (30) and the notch groove (32) are relatively misaligned, the sliding block (31) cannot slide in and out relative to the sliding sleeve (30).

5. A device for measuring separation of roof in a mine goaf according to claim 4, characterized in that: The plurality of spherical bodies (15) are each equipped with a circular ring (33), the plurality of circular rings (33) are each fixedly connected to an auxiliary spring (34), the plurality of auxiliary springs (34) are respectively fixedly connected to the plurality of lower half grooves (16), the plurality of spherical bodies (15) are each fixedly connected to a protective sleeve (35), and the plurality of protective sleeves (35) are respectively sleeved on the plurality of detection ropes (14).

6. A device for measuring separation of roof in a mine goaf according to claim 5, characterized in that: The middle plate frame (3) is provided with a middle through hole (36), and two cross rods (37) are fixedly connected in the middle through hole (36). The two cross rods (37) are cross-fixedly connected to each other. The top end of the linkage rod (13) is provided with a cross groove (38), and the two cross rods (37) are matched and inserted into the cross groove (38).

7. A device for measuring separation of roof in a mine goaf according to claim 6, characterized in that: The plurality of inner connecting ropes (18) are all fixedly connected to connecting members (39), the plurality of connecting members (39) are all provided with connecting holes (40), the plurality of connecting holes (40) are all provided with connecting bolts (41), the middle plate frame (3) is provided with threaded grooves (42), and the plurality of connecting bolts (41) are respectively threadedly connected in the plurality of threaded grooves (42).

8. A device for measuring separation of roof in a mine goaf according to claim 7, characterized in that: The plurality of connecting members (39) are all fixedly connected to an arc hook plate (43), a plurality of hooking protruding circular surfaces (44) are arranged in the middle plate frame (3), and the plurality of arc hook plates (43) are matched with the plurality of hooking protruding circular surfaces (44) respectively.

9. A device for measuring separation of roof in a mine goaf according to claim 8, characterized in that: A power quick connector (45) and a plurality of data line quick connectors (46) are installed at the bottom end of the installation cover (6), and the power quick connector (45) and the plurality of data line quick connectors (46) are both electrically connected to the pressure sensor (9).

10. A method for measuring roof separation in a mine goaf, characterized in that: A device for measuring the separation of roof in a mine goaf according to any one of claims 1 to 9 is used, comprising the following steps: S1. When in use, firstly, according to the specific position of the roof of the mine goaf, the points are marked to determine the specific installation positions of the main anchor rod assembly and the auxiliary anchor rod assembly, and then the anchor holes are drilled and opened relative to the points found by the marked lines. After the opening is completed, the main anchor rod assembly and the auxiliary anchor rod assembly are respectively inserted and fixed; S2. After the main anchor rod assembly and the auxiliary anchor rod assembly are installed relative to the roof of the mine goaf, the main mechanism is installed. When the main mechanism is installed, it is only necessary to align the installation shell (1) with the main anchor rod assembly, and then the multiple linkage ropes (12) drawn out from the main mechanism are respectively connected relative to the multiple auxiliary anchor rod assemblies, thus completing the structural installation of the mine goaf roof separation measurement device; S3, then external power lines and signal lines are installed for the main body to realize the power supply and detection signal output of the pressure sensor (9) in the main body. During the actual operation, when the roof of the mine goaf delamination occurs and the structure sinks, the changed area will cause the detection rope (14) corresponding to the area to be tightened and pulled, so that the traction of the middle plate frame (3) is realized through the traction transmission of the sphere (15), the internal rope (18) and the connecting piece (39), causing the relative position of the middle plate frame (3) to change in the installation cavity (2). The middle plate frame (3) with changed position will convert its own position change into pressure drive acting on the pressure sensor (9) through the transmission action of the linkage rod (13), the linkage rope (12) and the driving frame (10); S4, the pressure sensor (9) receives the pressure drive of the driving frame (10), and converts the pressure drive into a detection value output of the pressure sensor (9) itself, and realizes the measurement and real-time monitoring of the roof of the goaf area of ​​the mine by monitoring the output pressure value.

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