Laser measuring device for mine shaft section

Abstract

The present application relates to the technical fields of shaft section size measurement, and particularly relates to a laser measurement device for mine shaft section, which comprises a supporting cylinder, a plurality of clamping assemblies outside the supporting cylinder, a supporting lower ring plate, an inner double-cone ring plate rotatable by a motor drive, a plurality of lasers on the outer wall of the inner double-cone ring plate, a double-ratchet ring in the inner cavity of the inner double-cone ring plate, an upper cover plate assembly movably connected to the inner wall of the double-ratchet ring, one end of the clamping assembly hingedly connected to the upper end of the upper cover plate assembly, and the other end of the clamping assembly slidably connected to the supporting lower ring plate, and the supporting diameter size can be adjusted by the vertical displacement of the clamping assembly through the upper cover plate assembly. The device can rotate the lasers in a rotating manner for rotation measurement during lifting, expand the area of shaft section measurement, prevent dead angles during measurement, and improve the measurement accuracy.

Description

Technical Field

[0001] This invention relates to the field of vertical shaft cross-sectional dimension measurement technology, and more particularly to a laser measurement device for the cross-section of mine vertical shafts. Background Technology

[0002] The purpose of measuring the cross-sectional dimensions of mine shafts includes: ensuring that the shaft structure meets design requirements and guaranteeing construction safety; monitoring the stability of the surrounding rock to prevent collapse or deformation; optimizing the efficiency of production processes such as ventilation and transportation; and providing accurate data for subsequent maintenance, expansion, or equipment installation. Regular measurements allow for timely detection of problems and implementation of corrective measures, preventing safety accidents, extending the service life of the shaft, and ultimately achieving efficient and safe mine operation. Currently used manual measurement methods require personnel to enter the shaft, resulting in low efficiency and accuracy, and posing safety hazards such as falls from heights.

[0003] Chinese invention patent CN112924463B discloses a coal mine shaft inspection device and a laser scanning defect detection method. The device includes an inspection body installed inside the shaft and moving vertically within it; an external drive device connected to the inspection body via a rope for driving its vertical movement; tensioning devices evenly distributed on the top and bottom walls of the shaft, with a vertical guide steel rope between each corresponding tensioning device; a body guide device evenly fixed to the side wall of the inspection body, with the guide steel rope slidingly passing through it; a positioning system including several UWB nodes arranged on the inner wall of the shaft and one UWB node arranged on the inspection body; and a power supply battery pack, a wireless communication module, a laser radar, and an image acquisition platform installed on the inspection body. The power supply battery pack powers the wireless communication module and the laser radar. The radar and image acquisition platform are powered; the wireless communication module has wireless communication function and UWB node-based positioning function; the external drive device includes an upper drive device and a lower drive device. The upper drive device is located above the inspection device body and is connected to the inspection device body via a rope to drive the inspection device body upward; the lower drive device is located below the inspection device body and is connected to the inspection device body via a rope to drive the inspection device body downward; it also includes a ground charging pile, which is connected to the power supply battery pack. The above-disclosed solution uses a CCD camera and a lidar sensor to jointly inspect the concrete surface of the well wall for quality inspection. The CCD camera captures photos and detects crack information through processing. The lidar obtains information on the overall deformation through point cloud stitching, fitting and segmentation, etc. However, the lidar position in the above-disclosed solution is fixed, which easily leads to blind spots during measurement, resulting in low measurement efficiency and accuracy. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a laser measurement device for the cross-section of mine shafts.

[0005] To achieve the above objectives, the present invention discloses a laser measuring device for the cross-section of a mine shaft, comprising a support cylinder and multiple clamping assemblies located outside the support cylinder. The support cylinder includes a lower support ring plate, and an inner double-cone ring plate that is rotatable by a motor is nested inside the support cylinder. Multiple lasers are provided on the outer wall of the inner double-cone ring plate, and a double ratchet ring is provided in its inner cavity. An upper cover plate assembly is movably connected to the inner wall of the double ratchet ring. One end of the clamping assembly is hinged to the upper end of the upper cover plate assembly, and the other end is slidably connected to the lower support ring plate. The clamping assembly can adjust the support diameter by vertical displacement of the upper cover plate assembly.

[0006] Preferably, the system further includes a cleaning assembly, which includes a transparent cylinder fixed to the outer wall of the inner double-cone ring plate and covering the laser therein, and multiple sets of oblique frame strips located on the support cylinder and abutting the outer wall of the transparent cylinder.

[0007] Preferably, the support cylinder further includes an upper ring plate and multiple sets of spaced fixing rods for connecting the upper ring plate and the lower support ring plate. The inclined frame strip is located between the upper ring plate and the lower support ring plate, and the lower support ring plate is also provided with a ring baffle that connects with the inclined frame strip.

[0008] Preferably, the lower supporting ring plate is provided with multiple sets of cleaning holes in the circumferential direction.

[0009] Preferably, the double ratchet ring is fitted with a sleeve that is fixedly connected to the inner double conical ring plate. The sleeve has an inner gear ring at one end near the supporting lower ring plate. The inner gear ring meshes with the auxiliary gear driven by the motor. The double ratchet ring includes an outer ratchet ring and an inner ratchet ring. The inner wall of the inner ratchet ring has a groove. The upper cover plate assembly includes an auxiliary cylinder. The outer wall of the auxiliary cylinder has inclined ribs that are embedded in the inclined groove and arranged in a spiral shape along the axial direction of the auxiliary cylinder.

[0010] Preferably, the sleeve is conical, the inclined groove is provided with sliding balls that roll in contact with the end face of the inclined rib, a spring is provided between the lower supporting ring plate and the auxiliary cylinder, the upper cover plate assembly is provided with a through hole at the center, and the lower supporting ring plate is provided with a circular hole coaxial with the through hole.

[0011] Preferably, the clamping assembly includes a first slide rod with a groove, an extension rod, and a carriage plate hinged to the first slide rod at the end of the extension rod. The outer circumference of the supporting lower ring plate is provided with a side groove rod that cooperates with the carriage plate. The carriage plate can be displaced within the groove cavity of the side groove rod. Both the upper cover plate assembly and the upper ring plate are provided with a first hinge seat, and the hinge shaft of the first hinge seat passes through the groove.

[0012] Preferably, the slide plate is provided with columnar balls that roll in contact with the side wall of the trough, the extension rod is provided with a claw hook at the lower end away from the slide plate that contacts the upper edge of the hoisting structure of the mine, and the extension rod is provided with an upper inclined bar at the upper end away from the slide plate.

[0013] Preferably, the laser includes a laser emitter and a reflection receiving module. The laser emitter is located on the outer wall of the upper inclined annular surface of the inner double-cone ring plate, and the reflection receiving module is located on the outer wall of the lower inclined annular surface of the inner double-cone ring plate for receiving the signal from the laser emitter. The inner walls of the upper and lower inclined annular surfaces are provided with a plurality of heat dissipation strips spaced apart in the circumferential direction.

[0014] Preferably, the inner double-cone ring plate has an annular frame in the middle of its outer wall, and the annular frame is provided with a processing module, an environmental detection module and a network module.

[0015] The beneficial effects of this invention are:

[0016] 1. In the measurement of the cross-sectional dimensions of mine shafts, this device uses an inner double-cone ring plate to mount the laser and works in conjunction with the shaft hoisting structure to measure the cross-sectional dimensions of the shaft, thereby improving the efficiency of the measurement. During the lifting process, the laser is rotated to perform the measurement, which expands the measurement area of ​​the shaft cross-section, prevents blind spots during the measurement process, and improves the measurement accuracy.

[0017] 2. During the operation of this device in the mine shaft, dust will adhere to the outer wall of the transparent cylinder. During the laser rotation measurement, the inclined frame strip will remove the dust from the outer wall of the transparent cylinder, preventing the dust from affecting the laser measurement process and improving the accuracy of the measurement data.

[0018] 3. This device is positioned by hooking the extension rod to the upper edge of the hoisting structure in the mine. The extension rod can extend or retract, and can be installed on hoisting structures of different sizes. In the event of vibration, the device is stabilized by spring damping.

[0019] 4. This device can also perform actions at a certain depth in a mine shaft through the clamping component, and measure the cross-sectional dimensions of the mine shaft at this depth in a fixed manner, thereby improving the convenience and accuracy of the cross-sectional dimension measurement. Attached Figure Description

[0020] Figure 1 The three-dimensional structure of the present invention Figure 1 ;

[0021] Figure 2 The three-dimensional structure of the present invention Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 4 This is a top view of the overall structure of the present invention;

[0024] Figure 5 The three-dimensional inner double-cone ring plate in this invention Figure 1 ;

[0025] Figure 6 The three-dimensional inner double-cone ring plate in this invention Figure 2 ;

[0026] Figure 7 This is a perspective view of a partial structure of the present invention;

[0027] Figure 8 This is a perspective view of the clamping component in this invention;

[0028] Figure 9 This is a top view of the double ratchet ring in this invention;

[0029] Figure 10 This is a perspective view of the inner wall of the inner ratchet ring in this invention.

[0030] In the diagram, 1. Support cylinder; 101. Lower support ring plate; 102. Upper ring plate; 103. Fixing rod; 104. Ring baffle; 105. Cleaning hole; 106. Round hole; 107. Side groove rod; 108. Groove cavity; 2. Clamping assembly; 201. First sliding rod; 202. Slide groove; 203. Extension rod; 204. Slide plate; 205. Claw hook; 206. Upper inclined rod; 3. Inner double cone ring plate; 301. Upper inclined ring surface; 302. Lower inclined ring surface; 4. Motor; 5. Laser; 501. Laser emitter; 502. Reflection receiving module; 6. Double 601. Ratchet ring; 602. Outer ratchet ring; 603. Inner ratchet ring; 604. Inclined groove; 605. Sliding ball; 7. Top cover plate assembly; 701. Auxiliary cylinder; 702. Inclined rib; 703. Through hole; 8. Cleaning assembly; 801. Transparent cylinder; 802. Inclined frame strip; 9. Sleeve; 10. Inner gear ring; 11. Auxiliary gear; 12. Spring; 13. First hinge seat; 14. Hinge shaft; 15. Columnar ball; 16. Heat sink; 17. Annular frame; 18. Processing module; 19. Network module; 20. Environmental monitoring module; 21. Support diameter. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 To be continued Figure 10 The principles and features of the present invention are described, and the examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0032] Laser measuring devices for cross-sections of mine shafts, such as Figures 1-4As shown, the system includes a support cylinder 1 and multiple sets of clamping assemblies 2 located outside the support cylinder 1. In this embodiment, there are four sets of clamping assemblies 2, evenly arranged in the circumferential direction outside the support cylinder 1. The support cylinder 1 includes a lower supporting ring plate 101, an upper ring plate 102, and multiple sets of spaced fixing rods 103 for connecting the upper ring plate 102 and the lower supporting ring plate 101. In this embodiment, there are four sets of fixing rods 103, spaced in the circumferential direction to connect the lower supporting ring plate 101 and the upper ring plate 102. The fixing rods 103 can provide anti-collision protection for the internal components of the support cylinder 1.

[0033] The support cylinder 1 contains a rotatable inner double-cone ring plate 3 driven by a motor 4. Multiple sets of lasers 5 are mounted on the outer wall of the inner double-cone ring plate 3. Further, as... Figure 5 and Figure 6 As shown, the inner double-cone ring plate 3 includes an upper inclined ring surface 301 and a lower inclined ring surface 302. The laser 5 includes a laser emitter 501 and a reflection receiving module 502. The laser emitters 501 are evenly distributed on the outer wall of the upper inclined ring surface 301 of the inner double-cone ring plate 3. The reflection receiving module 502 is located on the outer wall of the lower inclined ring surface 302 of the inner double-cone ring plate 3 and is used to receive the signal from the laser emitter 501. Several heat dissipation strips 16 are spaced apart in the circumferential direction on the inner walls of the upper inclined ring surface 301 and the lower inclined ring surface 302. The heat dissipation strips 16 can dissipate heat from the laser emitter 501 and the reflection receiving module 502. Furthermore, the inner double-cone ring plate 3 has an annular frame 17 in the middle of the outer wall. A processing module 18 is provided on one side of the inner wall of the annular frame 17, and an environmental detection module 20 is provided on the other side of the inner wall. A network module 19 is provided in the middle of the annular frame 17. When the motor 4 drives the inner double-cone ring plate 3 to rotate within the support cylinder 1, the laser emitter 501 emits a laser beam that irradiates the inner wall of the shaft cross-section. The beam is then reflected, and the reflection receiving module 502 receives the emitted light. The processing module 18 processes the reflected laser beam to calculate the dimensions of the shaft cross-section. During the calculation process, the laser 5 can rotate to measure, expanding the measurement area of ​​the shaft cross-section, preventing blind spots and improving the accuracy of the measurement results. The environmental monitoring module 20 can detect the condition of the mine shaft. Since the environmental monitoring module 20 is a component well-known to those skilled in the art, it will not be described in detail here. The network module 19 can transmit the cross-sectional dimension measurement data.

[0034] One end of the clamping component 2 is hinged to the upper end of the upper cover plate component 7, and the other end is slidably connected to the lower support ring plate 101. The clamping component 2 can adjust the size of the support diameter 21 by following the vertical displacement of the upper cover plate component 7.

[0035] Specifically, such as Figure 7 and Figure 8As shown, the clamping assembly 2 includes a first slide rod 201 with a slide groove 202, an extension rod 203, and a slide plate 204 located at the end of the extension rod 203 and hinged to the first slide rod 201. The outer circumference of the supporting lower ring plate 101 is provided with a side groove rod 107 that cooperates with the slide plate 204. The slide plate 204 can be displaced in the groove 108 of the side groove rod 107. Both the upper cover plate assembly 7 and the upper ring plate 102 are provided with a first hinge seat 13. The hinge shaft 14 of the first hinge seat 13 passes through the slide groove 202. The slide groove 202 can rotate or slide freely along the hinge shaft 14. When the upper cover plate assembly 7 is displaced in the vertical direction, the first hinge seat 13 at the upper end of the upper cover plate assembly 7 applies force to the slide groove 202, causing the slide plate 204 to slide in the groove 108. The first hinge seat 13 on the upper ring plate 102 acts as a fulcrum for the first slide rod 201.

[0036] To reduce resistance during displacement and improve the stability of the slide plate 204 during displacement, the slide plate 204 is provided with columnar balls 15 that roll in contact with the side walls of the cavity 108. In this embodiment, there are two sets of columnar balls 15, which roll in contact with the side walls of the cavity 108 respectively. The extension rod 203 is provided with a claw hook 205 at the lower end away from the slide plate 204, which contacts the upper edge of the hoisting structure of the mine. The extension rod 203 is provided with an upper inclined rod 206 at the upper end away from the slide plate 204.

[0037] To further ensure measurement accuracy, the inner cavity of the inner double-cone ring plate 3 is provided with a double ratchet ring 6. The double ratchet ring 6 is fitted with a sleeve 9 that is fixedly connected to the inner double-cone ring plate 3. The sleeve 9 is conical, but it can also be cylindrical. The sleeve 9 has an inner gear ring 10 at one end near the supporting lower ring plate 101. The inner gear ring 10 meshes with the auxiliary gear 11 driven by the motor 4. In this embodiment, the inner gear ring 10 and the auxiliary gear 11 are internally meshed. The motor 4 is fixedly installed on the supporting lower ring plate 101 and located in the inner cavity of the inner double-cone ring plate 3.

[0038] like Figure 9 and Figure 10 As shown, the inner wall of the double ratchet ring 6 is movably connected to the upper cover plate assembly 7, specifically, as... Figure 9As shown, the double ratchet ring 6 includes an outer ratchet ring 601 and an inner ratchet ring 602. When the outer ratchet ring 601 (viewed from above) rotates counterclockwise, the movement between the outer ratchet ring 601 and the inner ratchet ring 602 is locked. When the outer ratchet ring 601 (viewed from above) rotates clockwise, the locking between the outer ratchet ring 601 and the inner ratchet ring 602 is released. The inner wall of the inner ratchet ring 602 is provided with a groove 603. The upper cover plate assembly 7 includes an auxiliary cylinder 701. The outer wall of the auxiliary cylinder 701 is provided with inclined ribs 702 arranged spirally along its axial direction. The inclined ribs 702 are partially embedded in the inclined grooves 603. The two are loosely fitted and can move relative to each other. In order to reduce the friction between the inclined ribs 702 and the inclined grooves 603, sliding balls 604 that roll in contact with the end face of the inclined ribs 702 are provided in the inclined grooves 603. A spring 12 is provided between the auxiliary cylinder 701 and the supporting lower ring plate 101. One end of the spring 12 abuts against the end of the auxiliary cylinder 701, and the other end is connected to a fixed ring seat fixed on the supporting lower ring plate 101. The spring 12 is positioned by the fixed ring seat to prevent the spring 12 from shifting during operation. When the motor 4 rotates in the reverse direction (counterclockwise when viewed from above), the sleeve 9 drives the outer ratchet ring 601 to rotate in the reverse direction. Figure 9 As can be seen, when the outer ratchet ring 601 rotates in the opposite direction, it locks with the inner ratchet ring 602. Therefore, the double ratchet rings 6 achieve synchronous reverse rotation. Through the cooperation of the inclined groove 603 and the inclined rib 702, the auxiliary cylinder 701 is driven to move downward. The spring 12 is compressed, and the size of the support diameter 21 increases, making contact with the inner wall of the mine shaft. At this time, the motor 4 stops working, and the device is positioned in the mine shaft. The claw hook 205 at one end of the extension rod 203 cooperates with the upper inclined rod 206. Through the contact with the interior of the mine shaft at two points, the device is positioned at a certain depth in the mine shaft. This allows the device to be positioned in an extended manner on the inner wall of the mine shaft at a certain depth, measuring the cross-sectional dimensions of the mine shaft at this depth, and improving the convenience of cross-sectional measurement.

[0039] The upper cover plate assembly 7 is also provided with a through hole 703 at its center, and the lower ring plate 101 is provided with a circular hole 106 coaxial with the through hole 703.

[0040] This device also includes a cleaning assembly 8, which comprises a transparent cylinder 801 fixed to the outer wall of the inner double-cone ring plate 3 and housing the laser 5 therein, and multiple sets of inclined frame strips 802 located on the support cylinder 1 and abutting the outer wall of the transparent cylinder 801. The transparent cylinder 801 protects its internal components from damage during lifting and lowering within the shaft. The inclined frame strips 802 are located between the upper ring plate 102 and the lower support ring plate 101, and the lower support ring plate 101 is also provided with a ring baffle 104 that connects to the inclined frame strips 802. The lower support ring plate 101 has multiple sets of cleaning holes 105 in the circumferential direction. During operation in a mine shaft, dust adheres to the outer wall of the transparent cylinder 801. When the inner double-cone ring plate 3 rotates, the transparent cylinder 801 rotates and comes into contact with the inclined frame strip 802. The dust adhering to the surface of the transparent cylinder 801 is scraped off and slides down the inclined frame strip 802 to the cleaning hole 105 and falls down, ensuring the clarity of the laser 5 and avoiding dust obstruction, thereby improving the measurement accuracy of the laser 5.

[0041] The working principle of this device is as follows: During the process of measuring the cross-sectional dimensions of a mine shaft, this device is installed above a hoisting structure. The hoisting structure can be raised and lowered in the shaft by a winch. Specifically, the workers pass the cable used for raising and lowering in the hoisting structure through the through hole 703 and the round hole 106. The lower end of the cable is fixed to the hoisting structure. The hoisting structure and the winch are common equipment for those skilled in the art, and will not be described in detail here.

[0042] Installation and positioning: Start the motor 4 to rotate in the opposite direction (counterclockwise when viewed from above), the auxiliary gear 11 meshes with the inner gear ring 10, the sleeve 9 drives the outer ratchet ring 601 of the double ratchet ring 6 to rotate in the opposite direction, the outer ratchet ring 601 and the inner ratchet ring 602 are locked together, the double ratchet ring 6 as a whole achieves reverse rotation, the auxiliary cylinder 701 is driven to move downward through the cooperation of the inclined groove 603 and the inclined rib 702, the upper cover plate assembly 7 moves downward as a whole, the four sets of extension rods 203 move outward to extend, and the support diameter 21 becomes larger. When motor 4 stops, the device is placed on the hoisting structure. The lower surface of the support ring plate 101 contacts the upper surface of the hoisting structure. The downward pressing force of the auxiliary cylinder 701 is released. Under the action of the spring 12's counter-reset force, the auxiliary cylinder 701 is pushed upward. During the upward movement of the auxiliary cylinder 701, the inclined rib 702 applies force to the inclined groove 603, thereby driving the inner ratchet ring 602 to rotate in the forward direction (clockwise when viewed from above). The inner ratchet ring 602 and the outer ratchet ring 601 are locked together. At this time, motor 4 rotates in the forward direction synchronously (clockwise when viewed from above). The outer ratchet ring 601 also rotates in the forward direction. The double ratchet ring 6 achieves forward rotation as a whole. While the auxiliary cylinder 701 moves upward, it drives the four sets of extension rods 203 to move towards the center. The four sets of claw hooks 205 contact and clamp with the upper edge of the hoisting structure, realizing the positioning and installation with the hoisting structure.

[0043] Mobile Measurement: Driven by the winch above the mine shaft, the hoisting structure rises and falls within the mine shaft. This device achieves synchronous lifting and lowering with the hoisting structure through four sets of claw hooks 205 and the installation and positioning of the hoisting structure. The motor 4 rotates in the forward direction (clockwise when viewed from above). The sleeve 9 drives the outer ratchet ring 601 of the double ratchet ring 6 to rotate in the forward direction, while the inner ratchet ring 602 is stationary. At this time, the outer ratchet ring 601 is equivalent to idling. The inner double cone ring plate 3 drives the laser 5 to rotate under the drive of the motor 4. The laser emitter 501 emits laser light, which is reflected after irradiating the cross-section of the mine shaft. The light passes through the transparent tube 801 and is received by the reflection receiving module 502. The processing module 18 processes the laser light before and after emission to calculate the dimensions of the shaft cross-section. During the measurement process, the laser 5 is rotated to increase the area measured by the laser 5 on the shaft cross-section.

[0044] Cleaning: During the measurement of cross-sectional dimensions, the transparent cylinder 801 on the outer wall of the inner double-cone ring plate 3 comes into contact with the inclined frame strip 802 while the inner double-cone ring plate 3 is rotating in the forward direction (clockwise when viewed from above). The dust attached to the outer wall of the transparent cylinder 801 is cleaned and falls down from the cleaning hole 105 along the inclined frame strip 802, thereby removing the dust that hinders the measurement of cross-sectional dimensions and improving the measurement accuracy.

[0045] Positioning Measurement: The motor 4 is started and rotated in the opposite direction (counterclockwise when viewed from above). The outer ratchet ring 601 and the inner ratchet ring 602 are locked together, and the double ratchet ring 6 rotates in the opposite direction as a whole. Through the cooperation of the inclined groove 603 and the inclined rib 702, the auxiliary cylinder 701 is moved downward to compress the spring 12. The four sets of extension rods 203 move outward and extend, and the support diameter 21 becomes larger until it contacts the inner wall of the mine. The motor 4 stops, and the inner double cone ring plate 3 stops rotating. Under the action of the spring 12's counter-reset force, the auxiliary cylinder 701 is pushed upward. During the upward movement of the auxiliary cylinder 701, the inclined rib 702 applies force to the inclined groove 603, thereby driving the inner ratchet ring 602 to rotate in the forward direction (clockwise when viewed from above). The inner ratchet ring 602 and the outer ratchet ring 601 are locked together. The device is then positioned in the mine, and the cross-sectional dimensions of a certain depth of the mine shaft are accurately measured in a fixed manner.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Laser measuring device for mine shaft sections, comprising a support cylinder (1), characterised in that: Also include a plurality of clamping assembly (2) located outside the support cylinder (1), the support cylinder (1) includes a support lower ring plate (101), the support cylinder (1) is nested with the inner double cone ring plate (3) which can be rotated by the motor (4) drive, the outer wall of the inner double cone ring plate (3) is provided with a plurality of laser (5), its inner cavity is provided with a double ratchet ring (6), the upper cover plate assembly (7) is movably connected with the inner wall of the double ratchet ring (6), one end of the clamping assembly (2) is hinged with the upper end of the upper cover plate assembly (7), and the other end is slidingly connected with the support lower ring plate (101), the clamping assembly (2) can realize the size adjustment of the support diameter (21) by the vertical displacement of the upper cover plate assembly (7); it also includes a cleaning assembly (8), the cleaning assembly (8) includes a transparent cylinder (801) which is fixedly arranged on the outer wall of the inner double cone ring plate (3) and covers the laser (5) inside, and a plurality of inclined frame strips (802) which are located on the support cylinder (1) and are attached to the outer wall of the transparent cylinder (801); the support cylinder (1) further comprises an upper ring plate (102) and a plurality of fixed rods (103) arranged at intervals for connecting the upper ring plate (102) and the support lower ring plate (101), the inclined frame strip (802) is located between the upper ring plate (102) and the support lower ring plate (101), and the support lower ring plate (101) is further provided with a ring baffle (104) connected with the inclined frame strip (802); the outer part of the double ratchet ring (6) is provided with a sleeve (9) fixedly connected with the inner double cone ring plate (3), one end of the sleeve (9) close to the support lower ring plate (101) is provided with an internal gear ring (10), the internal gear ring (10) is engaged with the auxiliary gear (11) driven by the motor (4), the double ratchet ring (6) comprises an outer ratchet ring (601) and an inner ratchet ring (602), the inner cylinder wall of the inner ratchet ring (602) is provided with an inclined groove (603), the upper cover plate assembly (7) comprises an auxiliary cylinder (701), the outer wall of the auxiliary cylinder (701) is provided with an inclined rib (702) which is partially embedded in the inclined groove (603) and arranged in a spiral shape in the axial direction of the auxiliary cylinder (701); the sleeve (9) is conical, the inclined groove (603) is provided with a sliding ball (604) in rolling contact with the end face of the inclined rib (702), the spring (12) is arranged between the support lower ring plate (101) and the auxiliary cylinder (701), the center of the upper cover plate assembly (7) is provided with a through hole (703), and the support lower ring plate (101) is provided with a circular hole (106) coaxial with the through hole (703).

2. The laser measuring device for a mine shaft section according to claim 1, characterized in that, The support lower ring plate (101) is provided with a plurality of cleaning holes (105) in the circumferential direction.

3. The laser measuring device for a mine shaft section according to claim 1, characterized in that, The clamping assembly (2) comprises a first sliding rod (201) with a sliding groove (202), an extension rod (203), and a sliding carriage plate (204) hinged to the end of the extension rod (203) and the first sliding rod (201), the outer circumference of the supporting lower ring plate (101) is provided with a side slot rod (107) matched with the sliding carriage plate (204), the sliding carriage plate (204) can be displaced in the slot cavity (108) of the side slot rod (107), the upper cover plate assembly (7) and the upper ring plate (102) are both provided with a first hinge seat (13), the hinge shaft (14) of the first hinge seat (13) penetrates the sliding groove (202).

4. The laser measuring device for a mine shaft section according to claim 3, characterized in that, The sliding carriage plate (204) is provided with a cylindrical ball (15) in rolling contact with the side wall of the slot cavity (108), the extension rod (203) is provided with a claw hook (205) in contact with the upper edge of the hoisting structure of the mine below the end away from the sliding carriage plate (204), and the extension rod (203) is provided with an upper inclined rod (206) above the end away from the sliding carriage plate (204).

5. The laser measuring device for mine shaft section according to claim 1, characterized in that, The laser (5) comprises a laser emitter (501) and a reflection receiving module (502), the laser emitter (501) is located on the outer wall of the upper inclined ring surface (301) of the inner double-tapered ring plate (3), the reflection receiving module (502) is located on the outer wall of the lower inclined ring surface (302) of the inner double-tapered ring plate (3) for receiving the signal of the laser emitter (501), and the inner walls of the upper inclined ring surface (301) and the lower inclined ring surface (302) are both provided with a plurality of heat dissipation strips (16) in the circumferential direction.

6. The laser measuring device for a mine shaft section according to claim 5, characterized in that The inner double-tapered ring plate (3) is provided with a ring-shaped frame (17) in the middle of the outer wall, the ring-shaped frame (17) is provided with a processing module (18), an environment detection module (20), and a network module (19).

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