Portable automatic measurement device and method for surrounding rock changes in mine tunnels using laser ranging

Abstract

The present invention relates to the field of underground monitoring technology, and discloses a portable automatic measurement device and method for surrounding rock changes in mine tunnels using laser ranging, including a detection body, a slidably connected back plate on the top of the detection body, a protective cover fixedly connected to the top of the back plate, and protective plates 1 connected to both left and right sides of the protective cover. In the present invention, the top of the detection body can be protected when not in use through the cooperation of a locking structure, a protective cover and a back plate, and protective plates 1 and 2 on the surface of the protective cover can protect a first laser rangefinder and a second laser rangefinder. When in use, the protective cover can be raised to a certain height and then fixed. The protective cover can buffer the top of the detection body through a buffer structure, so that the protective cover can realize the function of functional conversion, which is convenient for carrying and transporting the measuring device, thereby reducing the complexity of on-site operations and the risk of equipment loss.

Description

Technical Field

[0001] The invention relates to the technical field of underground monitoring, and in particular to a portable laser ranging automatic measuring device and method for surrounding rock changes in mine tunnels. Background Art

[0002] In recent years, the mining depth of mines in my country has been continuously increased, and the deep high ground stress has gradually increased. The roadway deformation is serious. It is necessary to explore the deformation law of surrounding rock to provide a basis for the roadway support parameters. In the mining process of mine roadways, the stability of surrounding rock is crucial to mine safety. Changes in surrounding rock, such as displacement, cracks, and settlement, may be precursors to mine accidents. Therefore, accurate and timely monitoring of surrounding rock changes is the key to ensuring safe production in mines.

[0003] For example, the application number is CN115318022A, a harmful gas monitoring and early warning system for mines.

[0004] The above patent proposes a gas detector, which includes a detector, an inlet hole, an alarm, a sensor and an air chamber; by setting a ring, a spring and an elastic cloth, the controller controls the air pump to stop, the attraction disappears and the elastic cloth will quickly drive the ring to move downward, so that the ring drives the spring to collide with the inner wall of the bottom of the cavity, and the spring drives the ring to vibrate up and down in the cavity, thereby causing the dust at the bottom of the filter to fall off under the action of vibration, reducing a large amount of dust accumulation at the bottom of the filter, causing the filter holes on the surface of the filter to be blocked, resulting in a decrease in the air flow rate drawn into the sensor by the air pump, thereby affecting the accuracy of the gas sensitive element in detecting air components.

[0005] However, the measuring device needs to be placed in a storage box when not in use, which makes the overall equipment bulky and inconvenient to carry and transport. When in use, the measuring device needs to be separated from the storage box and then used in conjunction with the measuring device through an external buffer component. This process increases the complexity of on-site operations and the risk of equipment loss.

[0006] Therefore, we proposed a portable automatic measurement device and method for surrounding rock changes in mine tunnels using laser ranging to solve the above-mentioned problems. Summary of the invention

[0007] The purpose of the present invention is to provide a portable automatic measuring device and method for surrounding rock changes in mine tunnels using laser ranging, so as to solve the problem that the measuring device proposed in the above-mentioned background technology needs to be placed in a storage box when not in use, which makes the overall equipment bulky and inconvenient to carry and transport. When in use, the measuring device needs to be separated from the storage box and then used in conjunction with the measuring device through an external buffer component. This process increases the complexity of on-site operations and the risk of equipment loss.

[0008] To achieve the above object, the present invention provides the following technical solutions: The portable mine tunnel surrounding rock change laser ranging automatic measuring device comprises a detection body, a back plate is slidably connected to the top of the detection body, a protective cover is fixedly connected to the top of the back plate, the left and right sides of the protective cover are connected to a first protective plate, the front and back sides of the protective cover are connected to a second protective plate, a digital storage card is provided on the left side of the front of the detection body, a charging port is provided on the right side of the front of the detection body, a power button is provided on the right side of the detection body, a first laser rangefinder is provided at the center of the front and back sides of the detection body, and a first laser rangefinder is provided at the center of the left and right sides of the detection body. A second laser rangefinder is provided on each of the protective plates, a locking structure is provided on one side of the protective plate one, the locking structure is connected to the auxiliary sleeve plate, a buffer structure is provided in each of the protective plates one and two, the buffer structure is connected to the protective cover, a cleaning structure is provided in each of the protective plates one and two, a slide groove is provided in the protective plate one, the buffer structure is slidably connected in the slide groove, a positioning plate is fixedly connected to the outer surface of the protective plate one, a hidden groove and a threaded hole are provided on the protective cover, an auxiliary structure is rotatably connected in the hidden groove, and the auxiliary structure is connected to the protective cover.

[0009] As a further description of the above technical solution: The locking structure includes a tooth plate and a fixed sleeve plate, the tooth plate is fixedly connected to the right side of the protective plate, the fixed sleeve plate is fixedly connected to the outer surface of the auxiliary sleeve plate, a guide rod is rotatably connected inside the fixed sleeve plate, and a ratchet is fixedly connected to the outer surface of the guide rod.

[0010] As a further description of the above technical solution: The ratchet bar is overlapped with the tooth plate, the outer cover of the guide rod is connected with a first coil spring, the ratchet bar is connected with a fixed sleeve plate through the first coil spring, and a supporting plate is fixedly connected below the ratchet bar.

[0011] As a further description of the above technical solution: The back of the second protective plate overlaps with the first laser rangefinder, the back of the first protective plate overlaps with the second laser rangefinder, the second protective plate is slidably connected in the auxiliary sleeve, and the first protective plate is slidably connected in the auxiliary sleeve.

[0012] As a further description of the above technical solution: The buffer structure includes a fixed column and a movable sleeve plate, the fixed column is rotatably connected in the slide groove, the fixed column outer shell is connected with a buffer spring, the movable sleeve plate is fixedly connected to the side of the protective cover, the movable sleeve plate is slidably connected in the slide groove, the movable sleeve plate is slidably connected to the outside of the fixed column, and the movable sleeve plate is fixedly connected in the slide groove through the buffer spring.

[0013] As a further description of the above technical solution: The protective plate is fixedly connected to a positioning plate on the outside, and the positioning plate is overlapped under the auxiliary sleeve. The cleaning structure includes a first threaded rod, a second threaded rod and a motor. The first threaded rod is rotatably connected to the right side of the protective plate, and the second threaded rod is rotatably connected to the left side of the protective plate. The motor is fixedly connected to the protective plate, and the output shaft of the motor is connected to the first threaded rod. The first threaded rod is externally transmission-connected to the motor.

[0014] As a further description of the above technical solution: The first threaded rod is connected to the second threaded rod through an anti-slip belt, the first threaded rod is externally threadedly connected to a first L-shaped plate, the second threaded rod is externally threadedly connected to a second L-shaped plate, a cleaning soft brush is provided under the second L-shaped plate, a first bolt is provided inside the first L-shaped plate, and the first L-shaped plate is threadedly connected to the cleaning soft brush through the first bolt.

[0015] As a further description of the above technical solution: The auxiliary structure includes a sealing plate and a second bolt. A handle is fixedly connected to the left side of the sealing plate. A rotating rod is fixedly connected inside the handle. The rotating rod is rotatably connected in the hidden groove. A second coil spring is connected to the outer shell of the rotating rod.

[0016] As a further description of the above technical solution: The handle is fixedly connected in the hidden groove through a second coil spring, the second bolt is threadedly connected to the top of the sealing plate, the sealing plate is overlapped above the protective cover, and the sealing plate is threadedly connected to the protective cover through the second bolt.

[0017] The present invention also provides a portable mine tunnel surrounding rock change laser ranging automatic measurement method, comprising the following steps: S1: When measuring the inside of the surrounding rock of the mine tunnel, the second bolt and the protective cover are separated, and the sealing plate and the handle will rotate under the action of the second coil spring when the resistance is lost, and the handle will flip around the rotating rod. When the handle and the protective cover are in a horizontal state, hold it, and then apply tension to the protective cover through the handle, the protective cover will drive the Chinese-shaped plate to slide in the detection body, and the protective plate 1 and the protective plate 2 will move on the surface of the auxiliary sleeve plate. When the tooth plate moves, it will drive the ratchet bar to rotate around the guide rod as the center, and when the ratchet bar rotates, it will drive the first coil spring to deform. When the protective cover moves to the appropriate position, the ratchet bar will contact the tooth plate through the first coil spring to locate the moving distance of the protective plate 2 and the buffer structure, and then flip the sealing plate into the hidden groove. The sealing plate will be threadedly connected to the top of the protective cover through the second bolt on the top, so that the sealing plate and the protective cover can fit completely, and the protective cover performs shock absorption treatment on the top of the detection body through the fixed column, the movable sleeve plate and the buffer spring; S2: When the protective cover drives the second protective plate and the buffer structure to move, it will be separated from the first laser rangefinder and the second laser rangefinder, and then the external support assembly will be connected to the detection body, and then the first laser rangefinder on the front and back sides of the detection body and the second laser rangefinder on the left and right sides will be used to measure the internal distance. If there is a wireless network such as WIFI coverage underground, the device can automatically connect to WIFI and upload data through the WIFI module. If there is no WIFI coverage, the data is stored in the device. After going up the well, it will connect to the ground network and automatically transmit data. If it is not connected to the ground network WIFI after going up the well, the security data card in the digital storage card of the device can also be taken out to connect to the computer to manually export the data; S3: When the surfaces of the first laser rangefinder and the second laser rangefinder become blurred during the detection process, the first threaded rod is driven by the motor to rotate. Since the first threaded rod is connected to the second threaded rod by the anti-slip belt, the first L-shaped plate will move on the surface of the first threaded rod, and the second L-shaped plate will move on the surface of the second threaded rod. The cleaning soft brush will clean the surface of the second laser rangefinder as the first L-shaped plate and the second L-shaped plate move. When the measuring device is used up, the support plate drives the ratchet bar to flip over. After the ratchet bar is separated from the tooth plate, the circular plate under the protective cover is hidden in the detection body, and the second protective plate and the buffer structure will contact the corresponding first laser rangefinder and the second laser rangefinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a pulling force is applied to the protective cover by the handle, and the protective cover will drive the circular plate to slide in the detection body, and the protective plate 1 and the protective plate 2 will move on the surface of the auxiliary sleeve plate, and the tooth plate will drive the ratchet to rotate around the guide rod when moving, and the ratchet will drive the first coil spring to deform when rotating. When the protective cover moves to the appropriate position, the ratchet will contact the tooth plate through the first coil spring to locate the moving distance of the protective plate 2 and the buffer structure. When the protective cover moves to the appropriate position and encounters an external force, the protective cover will move on the surface of the fixed column through the moving sleeve plate, and the moving sleeve plate will drive the buffer structure to move when moving. The spring is deformed, and the measuring device can protect the top of the detection body when not in use through the cooperation of the locking structure, the protective cover and the return plate, and the protective plate 1 and the protective plate 2 on the surface of the protective cover can protect the first laser rangefinder and the second laser rangefinder. When in use, the protective cover can be raised to a certain height and then fixed. The protective cover can buffer the top of the detection body through the buffer structure, so that the protective cover can realize the function of function conversion, which is convenient for carrying and transporting the measuring device, thereby reducing the complexity of on-site operations and the risk of equipment loss, and ensuring the flexibility of the measuring device.

[0019] 2. In the present invention, the first threaded rod is driven by a motor to rotate. Since the first threaded rod is connected to the second threaded rod by an anti-slip belt, the first L-shaped plate will move on the surface of the first threaded rod, and the second L-shaped plate will move on the surface of the second threaded rod. The cleaning soft brush will clean the surface of the second laser rangefinder as the first L-shaped plate and the second L-shaped plate move, so that the measuring device can continuously clean the surfaces of the first laser rangefinder and the second laser rangefinder during use, and the surfaces of the first laser rangefinder and the second laser rangefinder can ensure stable emission and reception of laser beams, avoid dust, mineral dust and other particles from affecting the propagation of laser signals, and prevent measurement errors. Through regular cleaning, the equipment can maintain a high measurement accuracy and ensure data accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the back side of the detection body of the present invention; Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of the locking structure of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the digital storage card of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the protective cover of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the auxiliary structure of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the cleaning structure of the present invention; Figure 8 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1, detection body; 2, digital storage card; 3, charging port; 4, locking structure; 401, tooth plate; 402, fixed sleeve plate; 403, guide rod; 404, ratchet; 405, first coil spring; 406, support plate; 5, auxiliary sleeve plate; 6, protective plate 1; 7, protective plate 2; 8, buffer structure; 801, fixed column; 802, movable sleeve plate; 803, buffer spring; 9, cleaning structure; 901, first threaded rod; 902, second threaded rod; 903, motor; 90 4. First L-shaped plate; 905. Second L-shaped plate; 906. Anti-skid tape; 907. Cleaning brush; 908. First bolt; 10. Auxiliary structure; 1001. Sealing plate; 1002. Second bolt; 1003. Handle; 1004. Turn bar; 1005. Second coil spring; 11. Protective cover; 12. Return plate; 13. First laser rangefinder; 14. Second laser rangefinder; 15. Slide groove; 16. Hidden groove; 17. Threaded hole; 18. Power button; 19. Positioning plate. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 8 , the present invention provides a technical solution: The portable laser ranging automatic measuring device for surrounding rock changes in mine tunnels comprises a detection body 1, a back plate 12 is slidably connected to the top of the detection body 1, a protective cover 11 is fixedly connected to the top of the back plate 12, the left and right sides of the protective cover 11 are connected to protective plates 1 6, the front and back sides of the protective cover 11 are connected to protective plates 2 7, a digital storage card 2 is provided on the left side of the front of the detection body 1, a charging port 3 is provided on the right side of the front of the detection body 1, a power button 18 is provided on the right side of the detection body 1, a first laser rangefinder 13 is provided at the center of the front and back of the detection body 1, and a A second laser rangefinder 14, a locking structure 4 is provided on one side of the protective plate 6, the locking structure 4 is connected to the auxiliary sleeve plate 5, a buffer structure 8 is provided in the protective plate 16 and the protective plate 2 7, the buffer structure 8 is connected to the protective cover 11, a cleaning structure 9 is provided in the protective plate 16 and the protective plate 2 7, a slide groove 15 is provided in the protective plate 16, the buffer structure 8 is slidably connected in the slide groove 15, a positioning plate 19 is fixedly connected to the outer surface of the protective plate 6, a hidden groove 16 and a threaded hole 17 are provided on the protective cover 11, an auxiliary structure 10 is rotatably connected in the hidden groove 16, and the auxiliary structure 10 is connected to the protective cover 11.

[0024] By providing the auxiliary sleeve 5 and the return plate 12, when a thrust or a pull is applied to the protective cover 11, the return plate 12 below the protective cover 11 will slide inside the detection body 1, and the protective cover 11 will move inside the auxiliary sleeve 5 through the protective plate 7 and the buffer structure 8 on the surface, so that the auxiliary sleeve 5 and the return plate 12 play a certain guiding role in the movement of the protective cover 11, thereby avoiding the protective cover 11 from bumping when moving.

[0025] Example 1: Please refer to Figure 3-Figure 5 , In this embodiment, the locking structure 4 includes a tooth plate 401 and a fixed sleeve plate 402, the tooth plate 401 is fixedly connected to the right side of the protective plate 6, the fixed sleeve plate 402 is fixedly connected to the outer surface of the auxiliary sleeve plate 5, a guide rod 403 is rotatably connected inside the fixed sleeve plate 402, a ratchet 404 is fixedly connected to the outer surface of the guide rod 403, a first coil spring 405 is connected to the outer sleeve of the guide rod 403, the ratchet 404 is connected to the fixed sleeve plate 402 through the first coil spring 405, a supporting plate 406 is fixedly connected below the ratchet 404, and the back of the protective plate 6 is connected to the second laser measuring The distance meter 14 is overlapped, the protective plate 2 7 is slidably connected in the auxiliary sleeve plate 5, the protective plate 1 6 is slidably connected in the auxiliary sleeve plate 5, the buffer structure 8 includes a fixed column 801 and a movable sleeve plate 802, the fixed column 801 is rotatably connected in the slide groove 15, the fixed column 801 is outerly connected with a buffer spring 803, the movable sleeve plate 802 is fixedly connected to the side of the protective cover 11, the movable sleeve plate 802 is slidably connected in the slide groove 15, the movable sleeve plate 802 is slidably connected to the outside of the fixed column 801, and the movable sleeve plate 802 is fixedly connected to the slide groove 15 through the buffer spring 803.

[0026] By setting the first coil spring 405 and the slide groove 15, when the protective cover 11 moves above the detection body 1, the tooth plate 401 on the surface of the protective plate 6 will drive the ratchet 404 to rotate around the guide rod 403, and the ratchet 404 will drive the first coil spring 405 to deform. When the height adjustment of the protective cover 11 is completed, the ratchet 404 will overlap with the tooth plate 401 through the first coil spring 405, so that the first coil spring 405 plays a certain auxiliary role in the rotation of the ratchet 404, which is convenient for locking the position of the protective cover 11. When the protective plate 6 moves to the appropriate position, the protective cover 11 can be buffered and moved in the slide groove 15 to avoid the protective cover 11 from colliding with the top of the detection body 1 when moving.

[0027] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 7-8 , In this embodiment: the protective plate 6 is fixedly connected to the outside with a positioning plate 19, and the positioning plate 19 is overlapped under the auxiliary sleeve plate 5. The cleaning structure 9 includes a first threaded rod 901, a second threaded rod 902 and a motor 903. The first threaded rod 901 is rotatably connected to the right side of the protective plate 6, and the second threaded rod 902 is rotatably connected to the left side of the protective plate 6. The motor 903 is fixedly connected to the protective plate 6, and the output shaft of the motor 903 is connected to the first threaded rod 901. The first threaded rod 901 is externally transmission-connected to the motor 903. The first threaded rod 901 is connected to the second threaded rod 902 through an anti-slip belt 906. The first threaded rod 901 is externally threadedly connected to a first L-shaped plate 904, and the second threaded rod 902 is externally threadedly connected to a second L-shaped plate 905. A cleaning soft brush 907 is provided under the second L-shaped plate 905. A first bolt 908 is provided in the first L-shaped plate 904, and the first L-shaped plate 904 is threadedly connected to the cleaning soft brush 907 through the first bolt 908.

[0028] By providing the cleaning structure 9, the first threaded rod 901 is driven to rotate by the motor 903. Since the first threaded rod 901 is connected to the second threaded rod 902 by the anti-slip belt 906, the first L-shaped plate 904 will move on the surface of the first threaded rod 901, and the second L-shaped plate 905 will move on the surface of the second threaded rod 902. The cleaning soft brush 907 will clean the surface of the second laser rangefinder 14 as the first L-shaped plate 904 and the second L-shaped plate 905 move. During use, the surfaces of the first laser rangefinder 13 and the second laser rangefinder 14 can be cleaned uninterruptedly. The cleaning soft brush 907 is connected to the first L-shaped plate 904 and the second L-shaped plate 905 by the first bolt 908, so that the cleaning soft brush 907 can realize the function of disassembly and assembly, which is convenient for replacing the cleaning soft brush 907, and avoiding the first laser rangefinder 13 and the second laser rangefinder 14 from being scratched due to excessive dust accumulation on the surface of the cleaning soft brush 907.

[0029] Embodiment 3: This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 5-Figure 6 , In this embodiment: the auxiliary structure 10 includes a sealing plate 1001 and a second bolt 1002, a handle 1003 is fixedly connected to the left side of the sealing plate 1001, a rotating rod 1004 is fixedly connected inside the handle 1003, the rotating rod 1004 is rotatably connected in the hidden groove 16, a second coil spring 1005 is connected to the outer sleeve of the rotating rod 1004, the handle 1003 is fixedly connected to the hidden groove 16 through the second coil spring 1005, the second bolt 1002 is threadedly connected to the top of the sealing plate 1001, the sealing plate 1001 is overlapped above the protective cover 11, and the sealing plate 1001 is threadedly connected to the protective cover 11 through the second bolt 1002.

[0030] By setting up the auxiliary structure 10, the second bolt 1002 is separated from the protective cover 11, and the sealing plate 1001 and the handle 1003 will rotate due to the elastic force of the second coil spring 1005 when the resistance is lost, and the handle 1003 will flip around the rotating rod 1004. When the handle 1003 and the protective cover 11 are in a horizontal state, they are held. When the adjustment of the protective cover 11 is completed, the sealing plate 1001 is flipped into the hidden groove 16, and the sealing plate 1001 is threadedly connected to the top of the protective cover 11 through the second bolt 1002 above, so that the sealing plate 1001 and the protective cover 11 can be completely fitted, so that the handle 1003 can be hidden above the protective cover 11, and the hidden handle 1003 can be completely fitted with the protective cover 11, so as to prevent dust from entering the interior of the detection body 1 through the gap during the detection process.

[0031] The portable laser ranging automated measurement method for surrounding rock changes in mine tunnels includes the following steps: S1: When starting to measure the inside of the surrounding rock of the mine tunnel, the second bolt 1002 and the protective cover 11 are separated, and the sealing plate 1001 and the handle 1003 will rotate under the action of the elastic force of the second coil spring 1005 when the resistance is lost, and the handle 1003 will flip around the rotating rod 1004. When the handle 1003 and the protective cover 11 are in a horizontal state, they are held, and then a pulling force is applied to the protective cover 11 through the handle 1003. The protective cover 11 will drive the circular plate 12 to slide in the detection body 1, and the protective plate 1 6 and the protective plate 2 7 will move on the surface of the auxiliary sleeve plate 5. The tooth plate 401 will drive the ratchet bar 404 to move. The guide rod 403 is rotated as the center, and the ratchet bar 404 will drive the first coil spring 405 to deform when rotating. When the protective cover 11 moves to the appropriate position, the ratchet bar 404 will contact the tooth plate 401 through the first coil spring 405, and the moving distance of the protective plate 7 and the buffer structure 8 will be positioned. Then the sealing plate 1001 is turned over to the hidden groove 16, and the sealing plate 1001 is threadedly connected with the upper part of the protective cover 11 through the second bolt 1002 on the upper side, so that the sealing plate 1001 and the protective cover 11 can be completely fitted, and the protective cover 11 performs shock-absorbing treatment on the top of the detection body 1 through the fixed column 801, the movable sleeve plate 802 and the buffer spring 803; S2: When the protective cover 11 drives the protective plate 2 7 and the buffer structure 8 to move, it will be separated from the first laser rangefinder 13 and the second laser rangefinder 14, and then the external support assembly will be connected to the detection body 1, and then the first laser rangefinder 13 on the front and back sides of the detection body 1 and the second laser rangefinder 14 on the left and right sides will be used to perform distance measurement on the inside. If there is a wireless network such as WIFI coverage underground, the device can automatically connect to WIFI and upload data through the WIFI module. If there is no WIFI coverage, the data is stored in the device, and after going up the well, it is connected to the ground network and automatically transmits data. If the ground network WIFI is not connected after going up the well, the security data card in the digital storage card 2 of the device can also be taken out to connect to the computer to manually export data; S3: When the surfaces of the first laser rangefinder 13 and the second laser rangefinder 14 become blurred during the detection process, the first threaded rod 901 is driven to rotate by the motor 903. Since the first threaded rod 901 is connected to the second threaded rod 902 by the anti-slip belt 906, the first L-shaped plate 904 moves on the surface of the first threaded rod 901, and the second L-shaped plate 905 moves on the surface of the second threaded rod 902. The cleaning soft brush 907 cleans the surface of the second laser rangefinder 14 as the first L-shaped plate 904 and the second L-shaped plate 905 move. When the measuring device is used up, the support plate 406 drives the ratchet 404 to flip over. After the ratchet 404 is separated from the tooth plate 401, the return plate 12 under the protective cover 11 is hidden in the detection body 1, and the protective plate 2 7 and the buffer structure 8 are in contact with the corresponding first laser rangefinder 13 and the second laser rangefinder 14.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable automatic measuring device for surrounding rock changes in mine tunnels using laser ranging, comprising a detection body (1), characterized in that: A return plate (12) is slidably connected to the top of the detection body (1), a protective cover (11) is fixedly connected to the top of the return plate (12), the left and right sides of the protective cover (11) are connected to a first protective plate (6), the front and back sides of the protective cover (11) are connected to a second protective plate (7), a digital storage card (2) is provided on the left side of the front of the detection body (1), a charging port (3) is provided on the right side of the front of the detection body (1), a power button (18) is provided on the right side of the detection body (1), a first laser rangefinder (13) is provided at the center of the front and back of the detection body (1), a second laser rangefinder (14) is provided at the center of the left and right sides of the detection body (1), and a lock is provided on one side of the first protective plate (6). The protective plate (11) comprises a first protective plate (6) and a second protective plate (7), wherein the first protective plate (6) and the second protective plate (7) are provided with a buffer structure (8), wherein the buffer structure (8) is connected to the protective cover (11), wherein the first protective plate (6) and the second protective plate (7) are provided with a cleaning structure (9), wherein a slide groove (15) is provided in the first protective plate (6), wherein the buffer structure (8) is slidably connected in the slide groove (15), wherein a positioning plate (19) is fixedly connected to the outer surface of the first protective plate (6), wherein a hidden groove (16) and a threaded hole (17) are provided on the protective cover (11), wherein an auxiliary structure (10) is rotatably connected in the hidden groove (16), wherein the auxiliary structure (10) is connected to the protective cover (11).

2. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 1 is characterized in that: The locking structure (4) comprises a tooth plate (401) and a fixed sleeve plate (402), wherein the tooth plate (401) is fixedly connected to the right side of the first protective plate (6), and the fixed sleeve plate (402) is fixedly connected to the outer surface of the auxiliary sleeve plate (5). A guide rod (403) is rotatably connected inside the fixed sleeve plate (402), and a ratchet strip (404) is fixedly connected to the outer surface of the guide rod (403).

3. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 2 is characterized in that: The ratchet bar (404) overlaps the tooth plate (401), a first coil spring (405) is connected to the outer sleeve of the guide rod (403), the ratchet bar (404) is connected to the fixed sleeve plate (402) via the first coil spring (405), and a supporting plate (406) is fixedly connected below the ratchet bar (404).

4. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 1 is characterized in that: The back surface of the second protective plate (7) overlaps with the first laser rangefinder (13), the back surface of the first protective plate (6) overlaps with the second laser rangefinder (14), the second protective plate (7) is slidably connected in the auxiliary sleeve (5), and the first protective plate (6) is slidably connected in the auxiliary sleeve (5).

5. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 1 is characterized in that: The buffer structure (8) comprises a fixed column (801) and a movable sleeve plate (802); the fixed column (801) is rotatably connected in the slide groove (15); a buffer spring (803) is connected to the outer surface of the fixed column (801); the movable sleeve plate (802) is fixedly connected to the side of the protective cover (11); the movable sleeve plate (802) is slidably connected in the slide groove (15); the movable sleeve plate (802) is slidably connected outside the fixed column (801); and the movable sleeve plate (802) is fixedly connected in the slide groove (15) via the buffer spring (803).

6. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 1 is characterized in that: The protective plate 1 (6) is fixedly connected to a positioning plate (19) outside, and the positioning plate (19) is overlapped below the auxiliary sleeve plate (5). The cleaning structure (9) comprises a first threaded rod (901), a second threaded rod (902) and a motor (903). The first threaded rod (901) is rotatably connected to the right side of the protective plate 1 (6), and the second threaded rod (902) is rotatably connected to the left side of the protective plate 1 (6). The motor (903) is fixedly connected to the protective plate 1 (6), and the output shaft of the motor (903) is connected to the first threaded rod (901). The first threaded rod (901) is externally transmission-connected to the motor (903).

7. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 6 is characterized in that: The first threaded rod (901) is connected to the second threaded rod (902) via an anti-slip belt (906); the first threaded rod (901) is externally threadedly connected to a first L-shaped plate (904); the second threaded rod (902) is externally threadedly connected to a second L-shaped plate (905); a cleaning soft brush (907) is provided under the second L-shaped plate (905); a first bolt (908) is provided inside the first L-shaped plate (904); and the first L-shaped plate (904) is threadedly connected to the cleaning soft brush (907) via the first bolt (908).

8. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 1 is characterized in that: The auxiliary structure (10) comprises a sealing plate (1001) and a second bolt (1002); a handle (1003) is fixedly connected to the left side of the sealing plate (1001); a rotating rod (1004) is fixedly connected inside the handle (1003); the rotating rod (1004) is rotatably connected in the hidden groove (16); and a second coil spring (1005) is connected to the outer shell of the rotating rod (1004).

9. The portable automatic measuring device for surrounding rock changes in mine tunnels by laser ranging according to claim 8 is characterized in that: The handle (1003) is fixedly connected in the hidden groove (16) via a second coil spring (1005); the second bolt (1002) is threadedly connected to the top of the sealing plate (1001); the sealing plate (1001) is overlapped above the protective cover (11); and the sealing plate (1001) is threadedly connected to the protective cover (11) via the second bolt (1002).

10. A portable automatic measurement method for surrounding rock changes in mine tunnels using laser ranging, according to the portable automatic measurement device for surrounding rock changes in mine tunnels using laser ranging according to any one of claims 1 to 9, characterized in that: The steps include: S1: When measuring the interior of the surrounding rock of the mine tunnel, the second bolt (1002) and the protective cover (11) are separated, and the sealing plate (1001) and the handle (1003) are rotated by the elastic force of the second coil spring (1005) when the resistance is lost, and the handle (1003) is turned around the rotating rod (1004). When the handle (1003) and the protective cover (11) are in a horizontal state, they are held, and then a pulling force is applied to the protective cover (11) through the handle (1003), and the protective cover (11) drives the circular plate (12) to slide in the detection body (1), and the protective plate 1 (6) and the protective plate 2 (7) move on the surface of the auxiliary sleeve (5), and the tooth plate (401) drives the ratchet (404) to guide the guide rod when moving. (403) is rotated as the center, and the ratchet (404) drives the first coil spring (405) to deform during the rotation. When the protective cover (11) moves to the appropriate position, the ratchet (404) contacts the tooth plate (401) through the first coil spring (405), and the moving distance of the protective plate (7) and the buffer structure (8) is positioned. Then, the sealing plate (1001) is flipped into the hidden groove (16), and the sealing plate (1001) is threadedly connected to the top of the protective cover (11) through the second bolt (1002) on the top, so that the sealing plate (1001) and the protective cover (11) can be completely fitted, and the protective cover (11) performs shock-absorbing treatment on the top of the detection body (1) through the fixed column (801), the movable sleeve plate (802) and the buffer spring (803); S2: When the protective cover (11) drives the second protective plate (7) and the buffer structure (8) to move, the first laser rangefinder (13) and the second laser rangefinder (14) are separated, and then the external support assembly is connected to the detection body (1), and then the first laser rangefinder (13) on the front and back sides of the detection body (1) and the second laser rangefinder (14) on the left and right sides perform distance measurement processing on the inside. If there is a wireless network such as WIFI coverage underground, the device can automatically connect to WIFI and upload data through the WIFI module. If there is no WIFI coverage, the data is stored in the device. After going up the well, it is connected to the ground network and automatically transmits the data. If it is not connected to the ground network WIFI after going up the well, the security data card in the digital storage card (2) of the device can be taken out and connected to a computer to manually export the data; S3: When the surfaces of the first laser rangefinder (13) and the second laser rangefinder (14) become blurred during the detection process, the first threaded rod (901) is driven to rotate by the motor (903). Since the first threaded rod (901) is connected to the second threaded rod (902) by the anti-slip belt (906), the first L-shaped plate (904) moves on the surface of the first threaded rod (901), and the second L-shaped plate (905) moves on the surface of the second threaded rod (902). The cleaning soft brush (907) is moved along the surface of the first threaded rod (901). The surface of the second laser rangefinder (14) is cleaned by moving the first L-shaped plate (904) and the second L-shaped plate (905). When the measuring device is used, the support plate (406) drives the ratchet bar (404) to flip over. After the ratchet bar (404) is separated from the tooth plate (401), the return plate (12) below the protective cover (11) is hidden in the detection body (1), and the second protective plate (7) and the buffer structure (8) are in contact with the corresponding first laser rangefinder (13) and the second laser rangefinder (14).

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