Method for using a calibrator for a centerline positioning device

Abstract

The present invention discloses a calibrator for a centerline positioning device, comprising a second frame and a center indicator. The second frame matches the cross-section of a roadway, and the center indicator is located at the center of the arc on the upper portion of the second frame. This solves the problem in the prior art where it is difficult to visually determine whether the laser light emitted by the first laser coincides with the centerline.

Description

Technical Field

[0001] The present invention relates to the technical field of centerline positioning, and in particular to a method for using a calibrator of a centerline positioning device. Background Art

[0002] When drilling for gas extraction in a coal face or drilling site within a stone gate (shaft or tunnel), determining the borehole's azimuth is crucial. Accurately determining the borehole's azimuth is a key factor in determining the borehole's control range. Existing techniques typically use a compass to directly determine the horizontal angle between the borehole and the centerline, and then a grade gauge to determine the vertical angle between the borehole and the centerline. Once these two angles are determined, the borehole's azimuth is determined.

[0003] However, during the use of the existing technology, it was found that since the excavation working face often has a lot of iron objects, which are magnetic, they will seriously affect the accuracy of the compass, resulting in inaccurate horizontal angles between the borehole and the center line, and the final azimuth of the borehole is inaccurate.

[0004] In order to solve the above problems, the inventors have developed a device for quickly determining the azimuth of a drill hole, which includes: a hole mouth positioning device, which is detachably mounted on a working surface, and is provided with a rectangular array of circular holes in 6 rows and 7 columns; a centerline positioning device, which includes a fixed plate and a first laser, the first laser is arranged on the fixed plate, and the central axis of the first laser is perpendicular to the front surface of the fixed plate; an intersection positioning device, which includes a rangefinder, a first frame and an intersection positioning hole, the intersection positioning hole is arranged on the first frame, and the rangefinder is arranged on the first frame; a drill rod guide device, which includes a second laser and a universal mechanism, the second laser is movably connected to the first frame through the universal mechanism, and the central axis of the second laser passes through the center of the intersection positioning hole.

[0005] In actual use, the applicant found that when using the centerline positioning device, if the first laser is directly fixed at the center point of the arc on the upper part of the working surface, it is not easy to determine with the naked eye whether the laser light emitted by the first laser coincides with the centerline. Summary of the Invention

[0006] In order to solve the above shortcomings and deficiencies of the prior art, an object of the present invention is to provide a method for using a calibrator of a centerline positioning device.

[0007] The technical solution of the present invention is: a calibrator of a centerline positioning device, comprising: a second frame and a center indication point, the second frame matches the tunnel section, and the center indication point is set at the center point of the upper arc of the second frame.

[0008] Furthermore, it also includes:

[0009] a first controller;

[0010] A photoelectric sensor is provided at the central indicating point and is electrically connected to the first controller;

[0011] A first signal light is electrically connected to the first controller.

[0012] Furthermore, it also includes:

[0013] The verticality inspection mechanism includes three or more verticality inspection mechanisms, and the verticality inspection mechanisms are arranged on the left side, right side and upper side of the second frame.

[0014] Furthermore, the verticality inspection mechanism includes:

[0015] A guide groove is fixedly connected to the left side, the right side and the upper side of the second frame, the length direction of the guide groove passes through the center point of the upper arc of the second frame, and the guide groove is parallel to the plane where the second frame is located;

[0016] An L-shaped inspection rod comprises a guide rod and a measuring rod, one end of the guide rod is fixedly connected to one end of the measuring rod, the guide rod and the measuring rod are perpendicular to each other, the guide rod matches the guide groove, the guide rod is slidably installed on the guide groove, and the end of the guide rod connected to the measuring rod is located at the end away from the center point of the upper arc of the second frame.

[0017] Furthermore, the verticality inspection mechanism further includes:

[0018] A compression spring, one end of which is connected to an end of the guide groove close to the center point of the upper circular arc of the second frame, and the other end of the compression spring is connected to the guide rod.

[0019] A method for using a calibrator of a centerline positioning device, the method comprising the following steps:

[0020] S01. Install the second frame in the tunnel, with the distance between the second frame and the working surface being greater than the intersection distance, and the plane where the second frame is located being parallel to the working surface;

[0021] S02. Irradiate the laser light emitted by the first laser onto the photoelectric sensor to light up the first signal light, and finally make the center line coincide with the center line of the upper arc of the arched laneway.

[0022] The beneficial effects of the present invention are: compared with the prior art,

[0023] 1) The present invention uses a calibrator to check whether the laser light emitted by the first laser is irradiated on the center indication point, thereby checking whether the laser light emitted by the first laser coincides with the center line. Since the center indication point is far away from the first laser, the inspection accuracy is high and the error is smaller;

[0024] 2) The present invention uses a photoelectric sensor to check whether the laser light emitted by the first laser is irradiated on the center indication point. If it is irradiated on the center indication point, the controller receives the signal detected by the photoelectric sensor and controls the first signal light to light up, indicating that the laser light emitted by the first laser coincides with the center line;

[0025] 3) The present invention uses a verticality checking mechanism to check whether the plane where the second frame is located is parallel to the working surface;

[0026] 4) The present invention achieves the purpose of overall detection of whether the plane on which the second frame is located is parallel to the working surface by sliding the guide rod of the L-shaped inspection rod onto the guide groove and then using the measuring rod to detect the parallelism of the left side, right side and upper side of the second frame with the inner wall of the tunnel;

[0027] 5) The present invention pushes the L-shaped inspection rod toward the inner wall of the tunnel through a compression spring. The operator only needs to adjust the position of the second frame and then observe the rod with their eyes. There is no need to operate the L-shaped inspection rod, which makes the operation more convenient.

[0028] 6) The present invention first installs the second frame in the tunnel, and the distance between the second frame and the working surface is greater than the intersection distance. The plane on which the second frame is located is parallel to the working surface, so that the center indication point is located at the center point of the upper arc of the tunnel. When the laser light emitted by the first laser irradiates the photoelectric sensor, causing the first signal light to light up, the center line passes through the center point of the upper arc of the arched tunnel. The present invention can verify whether the laser light emitted by the first laser coincides with the center line of the upper arc of the arched tunnel, thereby avoiding errors in the drilling position. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view of the laneway of the present invention;

[0030] Figure 2 for Figure 1 Sectional view along section line AA;

[0031] Figure 3 It is a front view of the orifice positioning device of the present invention;

[0032] Figure 4 for Figure 3 Partial view at point B in the middle;

[0033] Figure 5 for Figure 4 Sectional view of the CC section line;

[0034] Figure 6 A perspective view of the orifice positioning device of the present invention;

[0035] Figure 7 for Figure 6Partial view at H in the middle;

[0036] Figure 8 A perspective view of the centerline positioning device of the present invention;

[0037] Figure 9 is a perspective view of the calibrator of the present invention;

[0038] Figure 10 for Figure 9 Partial view at point D in the middle;

[0039] Figure 11 A perspective view of the intersection positioning device of the present invention;

[0040] Figure 12 for Figure 11 Partial view at G in the middle;

[0041] Figure 13 A perspective view of the drilling rig of the present invention;

[0042] Figure 14 for Figure 13 Partial view at F in the middle;

[0043] Figure 15 A circuit connection block diagram of a first controller of the present invention;

[0044] Figure 16 This is a circuit connection block diagram of the second controller of the present invention. DETAILED DESCRIPTION

[0045] The invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0046] Implementation Example 1: A calibrator of a centerline positioning device includes: a second frame 401 and a center indication point 402, wherein the second frame 401 matches the cross section of the tunnel 1, and the center indication point 402 is set at the center point of the upper arc of the second frame 401.

[0047] Furthermore, the system further includes: a first controller 406; a photoelectric sensor 403, which is disposed at the central indicator point 402 and is connected to the first controller 406 by wires; and a first signal light 405, which is connected to the first controller 406 by wires. The first controller 406 can be a controller with peripheral circuits, such as a PLC, Arduino, or Raspberry Pi.

[0048] Furthermore, it also includes: a verticality inspection mechanism 404, which includes more than three verticality inspection mechanisms 404, and the verticality inspection mechanisms 404 are arranged on the left side, right side and upper side of the second frame 401.

[0049] Furthermore, the verticality inspection mechanism 404 includes: a guide groove 4041, the guide groove 4041 is welded to the left side, right side and upper side of the second frame 401, the length direction of the guide groove 4041 passes through the center point of the upper arc of the second frame 401, and the guide groove 4041 is parallel to the plane where the second frame 401 is located; an L-shaped inspection rod 4042, the L-shaped inspection rod 4042 includes a guide rod 40422 and a measuring rod 40421, one end of the guide rod 40422 is welded to one end of the measuring rod 40421, the guide rod 40422 and the measuring rod 40421 are perpendicular to each other, the guide rod 40422 matches the guide groove 4041, the guide rod 40422 is slidably installed on the guide groove 4041, and the end of the guide rod 40422 connected to the measuring rod 40421 is located at the end away from the center point of the upper arc of the second frame 401.

[0050] Furthermore, the verticality inspection mechanism 404 further includes: a compression spring 4043 , one end of which is connected to one end of the guide groove 4041 close to the center point of the upper arc of the second frame 401 , and the other end of the compression spring 4043 is connected to the guide rod 40422 .

[0051] A method for using a calibrator of a centerline positioning device, the method comprising the following steps:

[0052] S01. Install the second frame 401 in the tunnel 1, with the distance between the second frame 401 and the working surface being greater than the intersection distance, and the plane where the second frame 401 is located being parallel to the working surface;

[0053] S02 , irradiating the laser light emitted by the first laser 202 onto the photoelectric sensor 403 to light up the first signal light 405 , and finally making the center line coincide with the center line of the upper arc of the arched tunnel 1 .

[0054] Implementation Example 2: This embodiment provides a device for quickly giving a drilling azimuth angle, the device comprising: a hole mouth positioning device 3, the hole mouth positioning device 3 being detachably mounted on a working surface, the hole mouth positioning device 3 being provided with a rectangular array 303 of circular holes in 6 rows and 7 columns; a centerline positioning device 304, the centerline positioning device 304 comprising a fixed plate 201 and a first laser 202, the first laser 202 being arranged on the fixed plate 201, the central axis of the first laser 202 being perpendicular to the front surface of the fixed plate 201; an intersection positioning device 5, the intersection positioning device 5 comprising a rangefinder 507, a first frame and an intersection positioning hole 506, the intersection positioning hole 506 being arranged on the first frame, and the rangefinder 507 being arranged on the first frame; a drill rod guiding device, the drill rod guiding device comprising a second laser 510 and a universal mechanism, the second laser 510 being movably connected to the first frame via the universal mechanism, the central axis of the second laser 510 passing through the center of the intersection positioning hole 506.

[0055] Furthermore, the orifice positioning device 3 includes: a skeleton airbag 301, which is a cylindrical airbag with an inflation port. When the skeleton airbag 301 is inflated, it has a circular arch shape and matches the edge of the working surface; an orifice positioning surface 302, which is provided with a rectangular array 303 of circular holes in 6 rows and 7 columns. The orifice positioning surface 302 is adhesively connected to the lower surface of the skeleton airbag 301. When the skeleton airbag 301 is inflated, the orifice positioning surface 302 is fully expanded; a center hole 304, which is opened at the center of the circular arc on the orifice positioning surface 302;

[0056] An inflation device is connected to the inflation port of the skeleton airbag 301 .

[0057] Furthermore, the inflation device includes: a first reaction bottle 305, in which a citric acid solution is placed; a second reaction bottle 306, in which a baking soda solution is placed; a first connecting tube 307, wherein the two ends of the first connecting tube 307 are respectively connected to the bottom of the first reaction bottle 305 and the second reaction bottle 306; a first valve 309, wherein the first valve 309 is arranged in the middle of the first connecting tube 307; and an air outlet 310, wherein the air outlet 310 is arranged at the upper part of the second reaction bottle 306, and the air outlet 310 is connected to the inflation port of the skeleton airbag 301.

[0058] Furthermore, it also includes: a defoaming sponge 313, which is arranged on the upper part of the baking soda liquid surface in the second reaction bottle 306.

[0059] Furthermore, it also includes: a second one-way check valve 311, which is arranged on the air outlet 310, and the conduction direction of the second one-way check valve 311 is from the inside of the second reaction bottle 306 to the outside of the second reaction bottle 306.

[0060] Furthermore, it also includes: a second valve 312 , which is arranged on the gas outlet 310 .

[0061] Furthermore, the centerline positioning device 304 also includes: a calibration table 204, which is welded to the upper part of the fixed plate 201, and the upper surface of the calibration table 204 is perpendicular to the front surface of the fixed plate 201; a first level 205, which is arranged on the upper surface of the calibration table 204.

[0062] Furthermore, the centerline positioning device 304 further includes: supporting legs 203 , which include three supporting legs 203 , connected to the fixing plate 201 , and evenly distributed around the central axis of the first laser 202 .

[0063] Furthermore, the supporting foot 203 includes: a fixing nail 2032, one end of which is pointed; an adjusting rod 2031, one end of which is rotatably connected to the fixing nail 2032, the end where the fixing nail 2032 is connected to the adjusting rod 2031 is opposite to the pointed end of the fixing nail 2032, an external thread is provided on the outer surface of the adjusting rod 2031, and the adjusting rod 2031 is threadedly connected to the fixing plate 201.

[0064] Furthermore, the centerline positioning device 304 also includes: a calibrator 4, the calibrator 4 includes a second frame 401 and a center indication point 402, the second frame 401 matches the cross-section of the tunnel 1, and the center indication point 402 is set at the center point of the upper arc of the second frame 401.

[0065] Furthermore, the calibrator 4 further includes: a first controller 406; a photoelectric sensor 403, which is disposed at the center indicator point 402 and is connected to the first controller 406 by a wire; and a first signal light 405, which is connected to the first controller 406 by a wire. The first controller 406 can be a controller with peripheral circuits, such as a PLC, Arduino, or Raspberry Pi.

[0066] Furthermore, the calibrator 4 further includes: a verticality inspection mechanism 404 , and the verticality inspection mechanism 404 includes more than three, and the verticality inspection mechanisms 404 are arranged on the left side, the right side and the top side of the second frame 401 .

[0067] Furthermore, the verticality inspection mechanism 404 includes: a guide groove 4041, the guide groove 4041 is welded to the left side, right side and upper side of the second frame 401, the length direction of the guide groove 4041 passes through the center point of the upper arc of the second frame 401, and the guide groove 4041 is parallel to the plane where the second frame 401 is located; an L-shaped inspection rod 4042, the L-shaped inspection rod 4042 includes a guide rod 40422 and a measuring rod 40421, one end of the guide rod 40422 is welded to one end of the measuring rod 40421, the guide rod 40422 and the measuring rod 40421 are perpendicular to each other, the guide rod 40422 matches the guide groove 4041, the guide rod 40422 is slidably installed on the guide groove 4041, and the end of the guide rod 40422 connected to the measuring rod 40421 is located at the end away from the center point of the upper arc of the second frame 401.

[0068] Furthermore, the verticality inspection mechanism 404 further includes: a compression spring 4043 , one end of which is connected to one end of the guide groove 4041 close to the center point of the upper arc of the second frame 401 , and the other end of the compression spring 4043 is connected to the guide rod 40422 .

[0069] Furthermore, the first frame includes: a triangular support frame, the triangular support frame includes support legs 501 and an operating table 502, the three support legs 501 of the triangular support frame are telescopic rods, the three support legs 501 are connected to the lower surface of the operating table 502 by hinges, and the three support legs 501 are evenly distributed around the central axis of the operating table 502; a lifting rod 503, the lower end of the lifting rod 503 is welded and connected to the upper surface of the operating table 502, and the central axis of the lifting rod 503 is perpendicular to the upper surface of the operating table 502; a friction type rotating shaft 504, the friction type rotating shaft 504 is installed at the upper end of the lifting rod 503, the intersection positioning hole 506 is welded and connected to the upper end of the friction type rotating shaft 504, and the central axis of the intersection positioning hole 506 is perpendicular to the central axis of the friction type rotating shaft 504.

[0070] Furthermore, the intersection positioning device 5 also includes: a U-shaped frame 506, one end of the U-shaped frame 506 is connected to the friction rotating shaft 504, and the other end of the U-shaped frame 506 is connected to the rangefinder 507, and the rangefinder 507 is located directly above the intersection positioning hole 506.

[0071] Furthermore, the universal mechanism includes: an intersection positioning ball 508, the intersection positioning hole 506 is opened on the intersection positioning ball 508, the intersection positioning hole 506 passes through the center of the ferromagnetic sphere, and the intersection positioning ball 508 is a ferromagnetic material; a magnetic base 509, one end of the magnetic base 509 is a concave spherical surface that matches the outer surface of the intersection positioning ball 508, the magnetic base 509 is magnetically attracted to the outer surface of the intersection positioning ball 508 through the concave spherical surface, and the other end of the magnetic base is welded to the bottom end of the second laser 510, the central axis of the magnetic base 509 passes through the center of the intersection positioning ball 508, and the central axis of the second laser 510 coincides with the central axis of the magnetic base 509.

[0072] The drill rod guide device further includes: an azimuth correction hole 511, disposed on the drill rig 6, with its central axis coinciding with the central axis of the drill rod 601; a second controller 513; a photoelectric switch 514, disposed at the bottom of the hole near one end of the drill rod 601 within the azimuth correction hole 511 and connected to the second controller 513 by wires; and a second signal light 512, connected to the second controller 513 by wires. The second controller 513 can be a controller with peripheral circuitry, such as a PLC, Arduino, or Raspberry Pi.

[0073] A method for quickly setting a drilling azimuth, the method comprising the following steps:

[0074] S01. Install the calibrator 4 in the tunnel 1, with the distance between the calibrator 4 and the working surface greater than the intersection distance, and the plane where the second frame 401 is located is parallel to the working surface;

[0075] S02. Drive the fixing nail 2032 into the center point of the arc on the working surface, rotate the adjusting rod 2031 so that the first level 205 on the calibration platform 204 is in a horizontal state, and the laser light emitted by the first laser 202 is irradiated onto the photoelectric sensor 403, so that the first signal light 405 is turned on, and finally the center line passes through the center point of the upper arc of the arched roadway 1;

[0076] S03. Open the first valve 309 to inflate the skeleton airbag 301, fix the orifice positioning device 3 in the tunnel 1, and make the orifice positioning surface 302 close to and parallel to the working surface. Mark the orifice of the drilled hole on the working surface in a rectangular array of six rows and seven columns according to the rectangular array of circular holes 303 on the orifice positioning surface 302.

[0077] S04, calculating the bottom position of each drill hole;

[0078] S05. Connect the bottom of the drilled hole with the hole opening on the working surface, find the intersection of the extended line of the connecting line and the projection of the center line on the horizontal plane, and calculate the distance d from the intersection to the working surface;

[0079] S06, setting an intersection positioning device 5 at a distance d from the working surface, and allowing the laser light emitted by the first laser 202 to pass through the intersection positioning hole 506;

[0080] S07, adjusting the position of the second laser 510 so that the laser light emitted by the second laser 510 points to the hole;

[0081] S08. Adjust the drill rig 6 so that the laser emitted by the second laser 510 passes through the azimuth correction hole 511 and irradiates the photoelectric switch 514. When the second signal is on, fix the angle of the drill rig 6 so that the drill rod 601 of the drill rig 6 is aligned with the hole opening and drills in the direction of the drill rod guide device.

[0082] The advantages of the present invention are:

[0083] 1) The present invention uses the calibrator 4 to verify whether the laser light emitted by the first laser 202 is irradiated on the center indicator point 402, thereby verifying whether the laser light emitted by the first laser 202 coincides with the center line. The present invention uses the calibrator 4 to verify whether the laser light emitted by the first laser 202 is irradiated on the center indicator point 402, thereby verifying whether the laser light emitted by the first laser 202 coincides with the center line. Since the center indicator point is far away from the first laser 202, the inspection accuracy is high and the error is smaller.

[0084] 2) The present invention uses a photoelectric sensor 403 to check whether the laser light emitted by the first laser 202 is irradiated on the center indicator point 402. If it is irradiated on the center indicator point 402, the controller receives the signal detected by the photoelectric sensor 403 and controls the first signal light 405 to light up, indicating that the laser light emitted by the first laser 202 coincides with the center line;

[0085] 3) The present invention uses a verticality checking mechanism to check whether the plane where the second frame 401 is located is parallel to the working surface;

[0086] 4) The present invention achieves the purpose of comprehensively detecting whether the plane on which the second frame 401 is located is parallel to the working surface by sliding the guide rod 40422 of the L-shaped inspection rod 4042 onto the guide groove 4041 and then using the measuring rod 40421 to detect the parallelism between the left side, right side, and top side of the second frame 401 and the inner wall of the tunnel 1.

[0087] 5) The present invention pushes the L-shaped inspection rod 4042 toward the inner wall of the tunnel 1 through the compression spring 4043. A person only needs to adjust the position of the second frame 401 and then visually observe the measuring rod 40421. There is no need to operate the L-shaped inspection rod 4042, which makes operation more convenient.

[0088] 6) The present invention first installs the second frame 401 in the tunnel 1, and the distance between the second frame 401 and the working surface is greater than the intersection distance. The plane on which the second frame 401 is located is parallel to the working surface, so that the center indicator point 402 is located at the center point of the upper arc of the tunnel. When the laser light emitted by the first laser 202 irradiates the photoelectric sensor 403, causing the first signal light 405 to light up, the center line passes through the center point of the upper arc of the arched tunnel 1. The present invention can verify whether the laser light emitted by the first laser 202 coincides with the center line of the upper arc of the arched tunnel 1, thereby avoiding errors in the drilling position.

[0089] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A method for using a calibrator of a centerline positioning device, characterized in that: include: A second frame (401) and a center indication point (402), wherein the second frame (401) matches the cross section of the tunnel (1), and the center indication point (402) is set at the center point of the upper arc of the second frame (401); The centerline positioning device (304) comprises a fixed plate (201) and a first laser (202), wherein the first laser (202) is arranged on the fixed plate (201), and the center axis of the first laser (202) is perpendicular to the front surface of the fixed plate (201); The centerline positioning device (304) further includes: a calibration platform (204), the calibration platform (204) being welded to the upper portion of the fixed plate (201), the upper surface of the calibration platform (204) being perpendicular to the front surface of the fixed plate (201); and a first level (205), the first level (205) being arranged on the upper surface of the calibration platform (204); The second frame (401) is installed in the lane (1) when in use, and the distance between the second frame (401) and the installation position of the centerline positioning device (304) is greater than a preset intersection distance; Support legs (203), the support legs (203) comprising three legs, the support legs (203) being connected to the fixing plate (201), and the support legs (203) being evenly distributed around the central axis of the first laser (202); The supporting foot (203) comprises: a fixing nail (2032), one end of which is pointed; an adjusting rod (2031), one end of which is rotatably connected to the fixing nail (2032), the end where the fixing nail (2032) is connected to the adjusting rod (2031) being opposite to the pointed end of the fixing nail (2032), an outer surface of the adjusting rod (2031) being provided with an external thread, and the adjusting rod 2031 being threadedly connected to the fixing plate 201; Also includes: First controller (406); A photoelectric sensor (403), the photoelectric sensor (403) being arranged at the central indication point (402), and the photoelectric sensor (403) being electrically connected to the first controller (406); a first signal light (405), the first signal light (405) being electrically connected to a first controller (406); Also includes: A verticality inspection mechanism (404), wherein the verticality inspection mechanism (404) comprises three or more verticality inspection mechanisms (404), and the verticality inspection mechanisms (404) are arranged on the left side, the right side, and the upper side of the second frame (401); The verticality inspection mechanism (404) comprises: A guide groove (4041), wherein the guide groove (4041) is fixedly connected to the left side, the right side and the upper side of the second frame (401), the length direction of the guide groove (4041) passes through the center point of the upper arc of the second frame (401), and the guide groove (4041) is parallel to the plane where the second frame (401) is located; An L-shaped inspection rod (4042), the L-shaped inspection rod (4042) comprising a guide rod (40422) and a measuring rod (40421), one end of the guide rod (40422) being fixedly connected to one end of the measuring rod (40421), the guide rod (40422) and the measuring rod (40421) being perpendicular to each other, the guide rod (40422) matching the guide groove (4041), the guide rod (40422 being slidably mounted on the guide groove (4041), and the end of the guide rod (40422) connected to the measuring rod (40421) being located at an end away from the center point of the upper circular arc of the second frame (401); The verticality inspection mechanism (404) further includes: A compression spring (4043), one end of the compression spring (4043) is connected to one end of the guide groove (4041) close to the center point of the upper arc of the second frame (401), and the other end of the compression spring (4043) is connected to the guide rod (40422); The method comprises the following steps: S01, installing the second frame (401) in the tunnel (1), with the distance between the second frame (401) and the working surface being greater than the intersection distance, and the plane where the second frame (401) is located being parallel to the working surface; S02, irradiating the laser light emitted by the first laser (202) onto the photoelectric sensor (403) to light up the first signal light (405), and finally making the center line coincide with the center line of the upper arc of the arched laneway (1).

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