Adjustable base of wall-type laser indicator

Abstract

The invention relates to the technical field of laser indicator bases, in particular to a wall-mounted laser indicator adjustable base which comprises a displacement mechanism and two fixing parts used for being fixedly connected with anchor rods on a roadway, the fixing parts are movably arranged on an installation foundation, and the anchor rods on the roadway can be adjusted by changing the relative angle between the fixing parts and the installation foundation. The mounting base is of a telescopic structure and is used for adaptively stretching out and drawing back according to different distances between the anchor rods, and the deformation monitoring mechanism is connected with the mounting base and the anchor rods. According to the invention, the telescopic mounting base, the multi-degree-of-freedom displacement mechanism and the integrated deformation monitoring mechanism are combined together to form an integral system for cooperative work, so that the mounting requirements of the side wall and the top plate of the roadway can be flexibly met, and real-time and visual deformation monitoring is provided; and a brand-new and more efficient laser indicator installation and calibration working process is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser pointer base, in particular to an adjustable base of a wall laser pointer. BACKGROUND

[0002] The wall laser pointer is an instrument for providing accurate direction in engineering construction, which is mainly installed on the wall of a roadway or a wall, used for indicating the waist line of the roadway or the auxiliary line parallel to the center line, and when the center line of the roadway needs to be indicated, the wall laser pointer needs to be installed on the anchor rod of the roadway roof.

[0003] However, the existing installation base of the wall laser pointer is generally connected with the anchor rod on the wall or the roof through the installation hole formed on the installation base, and the position of the installation hole on the installation base is fixed, but the distance and angle of the anchor rods on the wall and the roof of the roadway are not consistent, so the existing installation base cannot simultaneously adapt to the installation requirements at the wall and the roof of the roadway, and a plurality of installation bases need to be configured according to the actual installation position, and the flexibility is poor.

[0004] In addition, after the roadway is excavated, the original stress balance is destroyed, leading to stress redistribution, and the stress state of the surrounding rock changes dramatically, resulting in various forms of deformation, and the anchor rods are independent of each other, and the supporting capacity of the installation base is limited, and it is difficult to effectively resist deformation, so the laser pointer installed on the roadway needs to be regularly checked and adjusted to adapt to the deformed roadway.

[0005] At present, the deformation data of the roadway is generally monitored by a total station, and once the deformation of the roadway exceeds the threshold, the laser pointer needs to be adjusted, but the monitoring method by the total station is very time-consuming from station setting, measurement to data processing, and the efficiency is relatively low, and the measurement environment is harsh, and it is difficult to ensure the real-time and accuracy of the monitoring results. SUMMARY

[0006] Therefore, the present application aims to provide an adjustable base of a wall laser pointer to solve the technical problems in the prior art, which comprises two fixing members for fixed connection with the anchor rods on the roadway, the fixing members are movably arranged on the installation base, and by changing the relative angle of the fixing members and the installation base, the installation requirements at the wall and the roof of the roadway are adapted, and the installation base is of a telescopic structure, which is adapted to the different distances between the anchor rods.

[0007] The length of the installation base and the angle of the fixing members are adjusted, the fixing members are aligned with the anchor rods and locked, the installation base is installed between the two anchor rods, and a U-shaped frame is formed.

[0008] The displacement mechanism mounted on the mounting base includes a horizontal moving component and a rotating component mounted on the horizontal moving component, with a laser pointer mounted on the rotating component.

[0009] The deformation monitoring mechanism connected to the mounting base and the anchor bolt includes a sensing component that maintains contact with the roadway surface, and a support component for connecting the sensing component to the anchor bolt.

[0010] After the sensing component is installed between the two anchor rods by the support assembly, a lateral connection support is formed between the two anchor rods, which, together with the installation foundation and fasteners, form an integrated rectangular frame.

[0011] When the surface of the tunnel deforms, it pushes the sensing component to generate a linear displacement relative to the mounting base, and the degree of tunnel deformation is determined by monitoring the amount of this linear displacement.

[0012] Preferably, the installation base includes two telescopic plates symmetrically distributed in the horizontal direction, the fixed sections of the two telescopic plates are arranged opposite each other, an intermediate plate is fixedly connected between the two fixed sections, square notches are opened on the opposite sides of the telescopic sections of the two telescopic plates, a flip plate is rotatably installed in the square notches, and an installation groove is opened on the side of the flip plate away from the telescopic plates.

[0013] Preferably, the fastener includes a connecting sleeve installed in the mounting groove, the connecting sleeve having an opening on the side away from the telescopic plate, and a bolt threaded between the upper and lower sides of the opening.

[0014] Preferably, the horizontal moving assembly includes a U-shaped frame mounted on the intermediate plate and a telescopic frame mounted on the telescopic plate. The fixed section of the U-shaped frame and the telescopic frame are fixedly connected. A moving block is horizontally slidably arranged inside the U-shaped frame, and a driving component for driving the moving block to slide horizontally is provided on the telescopic frame.

[0015] Preferably, the driving component includes a rotating ring rotatably mounted on the telescopic section of the telescopic frame, a rotating rod installed inside the rotating ring, one end of the rotating rod being located inside the telescopic frame, and a lead screw being detachably mounted on one of the rotating rods located inside the telescopic frame by bolts, the lead screw being threadedly connected to the moving block.

[0016] Preferably, the rotating assembly includes an L-shaped frame, a fixed compartment is fixedly installed on the horizontal section of the L-shaped frame, a rotating disk is rotatably installed on the upper end of the fixed compartment, and a clamp for fixing the laser pointer is fixedly provided on the rotating disk. The L-shaped frame can be switched to be connected to the horizontal moving assembly in either a vertical or horizontal section to adapt to the installation of the laser pointer on the tunnel wall or roof.

[0017] Preferably, the support assembly includes a support plate, and there are two support plates. The support plates are horizontally telescopic structures. A rotating plate is hinged to the telescopic section of the support plate. An open sleeve is detachably installed on the rotating plate and fitted onto the end of the anchor rod. The open sleeve is locked by six bolts. A sleeve plate is fixed to the fixed section of the support plate, and a circular through hole is opened in the middle of the sleeve plate.

[0018] Preferably, the sensing component includes a round rod, which is inserted into the circular through holes of the two sleeve plates. A marker rod is fixedly installed at one end of the round rod near the displacement mechanism via a connecting plate. A circular hole is provided on the intermediate plate for the marker rod to pass through. A limit ring is threaded onto the part of the marker rod that passes through the circular hole. A helical spring is provided between the connecting plate and the intermediate plate.

[0019] Preferably, the U-shaped frame and the intermediate plate, as well as the telescopic frame and the telescopic plate, are connected by vertical sliding connections. An adjusting screw is rotatably installed on the side wall of the intermediate plate, and the adjusting screw is threadedly connected to the U-shaped frame.

[0020] Preferably, the rotating rod and the rotating ring are horizontally slidably connected. The rotating rod has multiple adjusting holes at equal intervals along its axial direction. The rotating ring has positioning holes. Bolts are threaded between the positioning holes and the adjusting holes corresponding to their positions.

[0021] As can be seen from the above technical solutions, the adjustable base of the wall-mounted laser pointer designed in this invention has the following beneficial effects: 1. This invention, through its retractable installation base and movable fixing parts, adapts to the installation requirements of anchor bolts with different spacing and angles, has strong installation adaptability and high versatility, and solves the problem that traditional bases cannot be used for both roadway walls and roofs at the same time.

[0022] 2. This invention converts the deformation of the roadway surface into visible linear displacement through the sensing components in the deformation monitoring mechanism. Combined with a visual sensor, it can realize automatic monitoring and early warning, reduce reliance on total station, and improve monitoring efficiency and real-time performance.

[0023] 3. The support components in the deformation monitoring mechanism of the present invention not only assist the positioning of the sensing components, but also enhance the connection strength between the anchor rods and improve the overall stability. Furthermore, the components are connected in a detachable and adjustable manner, which facilitates installation, maintenance and reuse.

[0024] In summary, this invention combines a retractable installation foundation, a multi-degree-of-freedom displacement mechanism, and an integrated deformation monitoring mechanism to form a collaborative overall system. This system can flexibly adapt to the installation requirements of roadway walls and roofs, and provides real-time, intuitive deformation monitoring. It offers a new and more efficient workflow for the installation and calibration of laser pointers, replacing traditional, inefficient methods. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a first three-dimensional structural diagram of the present invention when it is installed on a wall.

[0027] Figure 2 This is a second three-dimensional structural diagram of the present invention when it is installed on the wall.

[0028] Figure 3 This is a top view of the invention when it is installed on a wall.

[0029] Figure 4 This is a front view of the present invention.

[0030] Figure 5 It is a three-dimensional structural diagram of the connecting sleeve, mounting foundation, support plate, helical spring, etc.

[0031] Figure 6 It is a three-dimensional structural diagram of connecting sleeves, flip plates, telescopic plates, open ferrules, sleeve plates, etc.

[0032] Figure 7 This is a schematic diagram of the invention installed on the top plate.

[0033] Reference numerals: 1. Fixing component; 2. Installation foundation; 3. Displacement mechanism; 4. Deformation monitoring mechanism; 5. Anchor bolt; 6. Laser indicator; 11. Connecting sleeve; 21. Telescopic plate; 22. Intermediate plate; 221. Adjusting screw; 23. Flipping plate; 31. Horizontal movement assembly; 32. Rotation assembly; 41. Sensing assembly; 42. Support assembly; 311. U-shaped frame; 312. Telescopic frame; 313. Moving block; 314. Driving component; 315. Rotating ring; 316. Rotating rod; 317. Lead screw; 318. Adjustment hole; 319. Positioning hole; 321. L-shaped frame; 322. Fixed compartment; 323. Rotating disk; 324. Clamp; 411. Round rod; 412. Marking rod; 413. Limiting ring; 414. Helical spring; 421. Support plate; 422. Rotating plate; 423. Opening ferrule; 424. Sleeve plate. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] See Figure 1 , Figure 2 and Figure 3An adjustable base for a wall-mounted laser pointer includes two fixing members 1 for fixed connection with anchor bolts 5 in a roadway. The fixing members 1 are movably mounted on a mounting base 2, which is a telescopic structure to adapt to the spacing of the anchor bolts 5. A displacement mechanism 3 is provided on the mounting base 2, which includes a horizontal moving component 31 and a rotating component 32 provided on the horizontal moving component 31. The laser pointer 6 is detachably mounted on the rotating component 32. A deformation monitoring mechanism 4 is also provided on the mounting base 2, which includes a sensing component 41 and a support component 42 for connecting the sensing component 41 to the anchor bolts 5.

[0036] During installation, the support component 42 needs to be connected to the anchor rod 5 first, and then the sensing component 41 is installed on the support component 42. Then, the mounting base 2 is installed between the two anchor rods 5 through the fixing component 1. Next, the laser pointer 6 is installed on the rotating component 32. Then, the angle and horizontal position of the laser pointer 6 are adjusted according to the actual installation position to ensure the accuracy of the laser pointer 6 indicating the position.

[0037] When the tunnel deforms, the sensing component 41 converts the deformation into a linear displacement. By observing the linear displacement, the degree of deformation of the tunnel is determined, and the indicating position of the laser indicator 6 is calibrated in a timely manner.

[0038] See Figure 1 and Figure 5 The installation base 2 includes two telescopic plates 21 symmetrically distributed in the horizontal direction. The fixed sections of the two telescopic plates 21 are arranged opposite each other. An intermediate plate 22 is fixedly connected between the two fixed sections. A square notch is opened on the opposite side of the telescopic sections of the two telescopic plates 21. A flip plate 23 is rotatably installed in the square notch. An installation groove is opened on the side of the flip plate 23 away from the telescopic plate 21.

[0039] See Figure 1 and Figure 5 The fastener 1 includes a connecting sleeve 11 installed in the mounting groove. The connecting sleeve 11 has an opening on the side away from the telescopic plate 21, and a bolt is threaded between the upper and lower sides of the opening.

[0040] When the laser pointer 6 needs to be installed on the sidewall or roof of the roadway, the extension length of the telescopic section of the telescopic plate 21 is adjusted according to the spacing between two adjacent anchor bolts 5 on the sidewall along the length of the roadway or the spacing between two anchor bolts 5 symmetrically arranged on the roof along the width of the roadway, so that the connecting sleeve 11 can correspond to the position of the anchor bolt 5.

[0041] After the length of the telescopic plate 21 is adjusted, the connecting sleeve 11 is fitted onto the corresponding end of the anchor rod 5. Then, the opening of the connecting sleeve 11 is locked by bolt 1 to complete the fixed connection between the connecting sleeve 11 and the anchor rod 5, forming a U-shaped frame. In order to ensure the connection strength between the connecting sleeve 11 and the anchor rod 5, a rubber layer can be adhered to the inner wall of the connecting sleeve 11 to increase the friction between the connecting sleeve 11 and the anchor rod 5.

[0042] It should be noted that the anchor bolts 5 on the tunnel sidewall are perpendicular to each other, while the tunnel roof is generally an arched structure, and there is an angle between the anchor bolts 5 and the roof. The connecting sleeve 11 in this invention is rotatably connected to the telescopic plate 21 through the flip plate 23, and the angle of the connecting sleeve 11 can be adaptively adjusted according to the actual installation angle of the anchor bolts 5, thereby improving the flexibility of installation.

[0043] See Figure 1 , Figure 2 and Figure 4 The horizontal moving component 31 includes a U-shaped frame 311 mounted on the intermediate plate 22 and a telescopic frame 312 mounted on the telescopic plate 21. The fixed section of the U-shaped frame 311 and the telescopic frame 312 are fixedly connected. A moving block 313 is horizontally slidably arranged inside the U-shaped frame 311. A driving component 314 for driving the moving block 313 to slide horizontally is provided on the telescopic frame 312.

[0044] When the movable block 313 slides under the drive of the drive component 314, it can contact the upper and lower inner walls of the U-shaped frame 311, the upper and lower inner walls of the telescopic section of the telescopic frame 312, or the upper and lower inner walls of the fixed section of the telescopic frame 312. The corresponding upper and lower inner walls play a limiting and guiding role in the movement of the movable block 313. The horizontal section of the U-shaped frame 311 and the fixed end of the telescopic frame 312 are both equipped with guide rails. The guide rails slide in cooperation with the lower end of the movable block 313 to further guide the sliding of the movable block 313 and improve the stability of the sliding.

[0045] See Figure 2 and Figure 4 The U-shaped frame 311 and the intermediate plate 22, as well as the telescopic frame 312 and the telescopic plate 21, are all connected by sliding connections. An adjusting screw 221 is rotatably installed on the side wall of the intermediate plate 22, and the adjusting screw 221 is threadedly connected to the U-shaped frame 311.

[0046] By rotating the adjusting screw 221, the relative position of the U-shaped frame 311 and the intermediate plate 22 can be adjusted, thereby indirectly adjusting the relative position of the telescopic frame 312 and the telescopic plate 21, so as to further enhance the adjustability of the laser pointer 6 position and thus ensure the accuracy of the laser pointer 6 pointing position.

[0047] See Figure 1 and Figure 2The driving component 314 includes a rotating ring 315 rotatably mounted on the telescopic section of the telescopic frame 312. A rotating rod 316 is installed inside the rotating ring 315. One end of the rotating rod 316 is located inside the telescopic frame 312, and a rotating disk is provided at the other end of the rotating rod 316 located outside the telescopic frame 312. A lead screw 317 is detachably installed on the part of the rotating rod 316 located inside the telescopic frame 312 by bolts. The lead screw 317 is threadedly connected to the moving block 313.

[0048] When the telescopic plate 21 extends or retracts, the telescopic frame 312 also changes its extension length to accommodate the distance between the two anchor rods 5. When it is necessary to adjust the horizontal position of the laser pointer 6, the rotating rod 316 is rotated by rotating the rotating disk, which in turn drives the lead screw 317 to rotate, causing the moving block 313 to produce a horizontal displacement.

[0049] It should be noted that after the laser pointer 6 is installed, its horizontal position only needs to be adjusted within a small range. Therefore, only the lead screw 317 needs to be installed on the corresponding rotating rod 316 according to the actual adjustment needs, instead of installing lead screw 317 on both rotating rods 316, thus saving purchase costs and leaving enough space for the telescopic plate 21 and telescopic frame 312 to extend and retract.

[0050] See Figure 2 and Figure 4 The rotating rod 316 is horizontally slidably connected to the rotating ring 315. Multiple adjusting holes 318 are equally spaced along the axial direction of the rotating rod 316. The rotating ring 315 is provided with a positioning hole 319. A bolt is threaded between the positioning hole 319 and the adjusting hole 318 corresponding to its position.

[0051] By coordinating the positioning hole 319 with the adjustment holes 318 at different positions, the adjustability of the horizontal position of the laser pointer 6 is further enhanced.

[0052] See Figure 1 and Figure 2 The rotating assembly 32 includes an L-shaped frame 321, which can be switched to be connected to the moving block 313 in either a vertical or horizontal section. A fixed chamber 322 is fixedly installed on the horizontal section of the L-shaped frame 321. A motor is installed inside the fixed chamber 322. A rotating disk 323 is rotatably installed on the upper end of the fixed chamber 322. A clamp 324 for fixing the laser pointer 6 is fixedly provided on the rotating disk 323. The lower end of the rotating disk 323 is fixedly connected to the output shaft of a motor (not shown in the figure). The motor can be a stepper motor or a servo motor. It receives external control signals via wired or wireless means to precisely adjust the rotation angle of the rotating disk 323.

[0053] When the laser pointer 6 is installed on the tunnel wall, the vertical section of the L-shaped frame 321 is detachably connected to the moving block 313 by bolt four, and the horizontal section of the L-shaped frame 321 is in contact with the upper end face of the U-shaped frame 311. After the base and the laser pointer 6 are installed, the laser pointer 6 is located above the base. Then, the angle of the rotating disk 323 is adjusted by the motor so that the laser pointer 6 is set along the length of the tunnel to ensure that the laser pointer 6 can indicate the waistline of the tunnel.

[0054] When the laser pointer 6 needs to be installed on the tunnel roof, the horizontal section of the L-shaped frame 321 is connected to the moving block 313 using bolts 4, and the vertical section of the L-shaped frame 321 is aligned with the U-shaped frame 311. After both the base and the laser pointer 6 are installed, the laser pointer 6 is positioned directly below the base. Then, the angle of the rotating disk 323 is adjusted by a motor, ensuring that the laser pointer 6 is positioned along the length of the tunnel to indicate the centerline of the tunnel. Figure 7 As shown.

[0055] See Figure 2 , Figure 5 and Figure 6 The support assembly 42 includes a support plate 421, and there are two support plates 421. The support plates 421 are horizontally telescopic structures. The telescopic section of the support plate 421 is hinged to a rotating plate 422. An open sleeve 423 is installed on the rotating plate 422 and sleeved on the end of the anchor rod 5. The open sleeve 423 is locked by six bolts. The fixed section of the support plate 421 is fixed with a sleeve plate 424. A circular through hole is opened in the middle of the sleeve plate 424.

[0056] It should be noted that the open sleeve 423 and the rotating plate 422, as well as the connecting sleeve 11 and the flip plate 23, are detachably connected by bolt two, so that the open sleeve 423 or the connecting sleeve 11 can be replaced separately to adapt to anchor rods 5 of different diameters. When the anchor rod 5 is installed at an angle, the connecting sleeve 11 can be fitted onto the end of the anchor rod 5, and then the connecting sleeve 11 and the flip plate 23 can be connected by bolt two.

[0057] See Figure 2 , Figure 5 and Figure 6 The sensing component 41 includes a round rod 411. The round rod 411 is inserted into the circular through holes of the two sleeve plates 424. A marking rod 412 is fixedly installed at one end of the round rod 411 near the displacement mechanism 3 via a connecting plate. A circular hole is provided on the intermediate plate 22 for the marking rod 412 to pass through. A limit ring 413 is threadedly installed on the part of the marking rod 412 that passes through the circular hole. A helical spring 414 is provided between the connecting plate and the intermediate plate 22. The helical spring 414 is fixedly connected to the connecting plate and is in close contact with the intermediate plate 22.

[0058] Before connecting the fastener 1 to the anchor rod 5, first, the open-end ferrule 423 is fitted onto the end of the anchor rod 5. Then, the position of the support plate 421 is adjusted so that the circular through holes on the sleeve plate 424 of the two support plates 421 coincide. Next, the round rod 411 is inserted into the two circular through holes, and then the fastener 1 is installed. It should be noted that the open-end ferrule 423 is rotatably connected to the support plate 421 through the rotating plate 422, so the angle of the open-end ferrule 423 can be adjusted adaptively according to the actual installation angle of the anchor rod 5.

[0059] After the fastener 1 is installed, the marker rod 412 passes through the round hole, and the helical spring 414 is tightly attached to the intermediate plate 22. Under the elastic force of the helical spring 414, the round rod 411 remains tightly attached to the tunnel wall (or the tunnel roof). It should be noted that the round rod 411 can be designed as a multi-segment splicing structure to adjust the length of the round rod 411 according to the actual installation needs.

[0060] When the roadway deforms, the sidewalls or roof often move inward or bulge first. Before the force generated during deformation reaches the level that would damage the anchor bolt 5, the anchor bolt 5 resists the deformation through its own prestress, but it cannot prevent the overall displacement of the sidewall or roof surface. When the sidewalls or roof bulge, it will exert a force on the round rod 411 to move towards the intermediate plate 22. When the sidewalls or roof move inward, the helical spring 414 will exert a force on the round rod 411 to move away from the intermediate plate 22.

[0061] When the round rod 411 moves, it drives the marking rod 412 and the limiting ring 413 to move synchronously through the connecting plate. In actual application, a vision sensor can be set on the intermediate plate 22 to monitor the displacement of the limiting ring 413. When the displacement of the limiting ring 413 exceeds the set value, the vision sensor sends a signal to the control system to prompt the staff to adjust the position of the corresponding laser pointer 6 in time to ensure the accuracy of the indicated position.

[0062] In the above structure, the support plate 421 can not only support and limit the round rod 411 through the circular through hole on the sleeve plate 424, but also the two support plates 421 can connect and support the two anchor rods 5. Together with the installation base 2 and the fixing component 1, they form an integrated rectangular frame, which improves the support strength of the anchor rods 5 to the base.

[0063] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] In the description of this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] The above provides a detailed description of the adjustable base for a wall-mounted laser pointer provided by the present invention. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An adjustable base for a wall-mounted laser pointer, characterized in that, include: Two fasteners are used to fix the anchor bolts on the roadway. The fasteners are movably set on the installation base. By changing the relative angle between the fasteners and the installation base, the installation needs at the roadway sidewalls and roof can be adapted. The installation base is a telescopic structure to be adaptively adjusted according to the different anchor bolt spacing. Adjust the length of the installation foundation and the angle of the fasteners to align and lock the fasteners with the anchor rods. Install the installation foundation between the two anchor rods to form a U-shaped frame. The displacement mechanism set on the mounting base includes a horizontal moving component and a rotating component set on the horizontal moving component, and the laser pointer is mounted on the rotating component. The deformation monitoring mechanism connected to the mounting base and anchor bolts includes a sensing component that maintains contact with the roadway surface, and a support component for connecting the sensing component to the anchor bolts; After the sensing component is installed between two anchor rods by the support component, a lateral connection support is formed between the two anchor rods, which, together with the installation foundation and fasteners, form an integrated rectangular frame; When the surface of the tunnel deforms, it pushes the sensing component to generate a linear displacement relative to the mounting base, and the degree of tunnel deformation is determined by monitoring the amount of this linear displacement.

2. The adjustable base for a wall-mounted laser pointer according to claim 1, characterized in that, The installation base includes two telescopic plates symmetrically distributed in the horizontal direction. The fixed sections of the two telescopic plates are arranged opposite each other, and an intermediate plate is fixedly connected between the two fixed sections. Square notches are opened on the opposite sides of the telescopic sections of the two telescopic plates. A flip plate is rotatably installed in the square notches. An installation groove is opened on the side of the flip plate away from the telescopic plates.

3. The adjustable base for a wall-mounted laser pointer according to claim 2, characterized in that, The fastener includes a connecting sleeve installed in the mounting groove. The connecting sleeve has an opening on the side away from the telescopic plate, and a bolt is threaded between the upper and lower sides of the opening.

4. The adjustable base for a wall-mounted laser pointer according to claim 2, characterized in that, The horizontal moving assembly includes a U-shaped frame mounted on the intermediate plate and a telescopic frame mounted on the telescopic plate. The fixed section of the U-shaped frame and the telescopic frame are fixedly connected. A moving block is horizontally slidably arranged inside the U-shaped frame, and a driving component for driving the moving block to slide horizontally is provided on the telescopic frame.

5. The adjustable base for a wall-mounted laser pointer according to claim 4, characterized in that, The driving component includes a rotating ring rotatably mounted on the telescopic section of the telescopic frame, a rotating rod installed inside the rotating ring, one end of the rotating rod being located inside the telescopic frame, and a lead screw being detachably installed on one of the rotating rods located inside the telescopic frame by bolts, the lead screw being threadedly connected to the moving block.

6. The adjustable base for a wall-mounted laser pointer according to claim 1, characterized in that, The rotating assembly includes an L-shaped frame, a fixed chamber is fixedly installed on the horizontal section of the L-shaped frame, a rotating disk is rotatably installed on the upper end of the fixed chamber, and a clamp for fixing the laser pointer is fixedly installed on the rotating disk. The L-shaped frame can be switched to be connected to the horizontal moving assembly in either a vertical or horizontal section to adapt to the installation of the laser pointer on the roadway wall or roof.

7. The adjustable base for a wall-mounted laser pointer according to claim 1, characterized in that, The support assembly includes two support plates. The support plates are horizontally telescopic structures. A rotating plate is hinged to the telescopic section of the support plate. An open sleeve is detachably installed on the rotating plate and fitted onto the end of the anchor rod. The open sleeve is locked by six bolts. A sleeve plate is fixed to the fixed section of the support plate. A circular through hole is opened in the middle of the sleeve plate.

8. The adjustable base for a wall-mounted laser pointer according to claim 7, characterized in that, The sensing component includes a round rod, which is inserted into the circular through holes of the two sleeve plates. A marker rod is fixedly installed at one end of the round rod near the displacement mechanism via a connecting plate. A circular hole is provided on the middle plate for the marker rod to pass through. A limit ring is threaded onto the part of the marker rod that passes through the circular hole. A helical spring is provided between the connecting plate and the middle plate.

9. The adjustable base for a wall-mounted laser pointer according to claim 4, characterized in that, The U-shaped frame and the middle plate, as well as the telescopic frame and the telescopic plate, are all connected by vertical sliding connections. An adjusting screw is rotatably installed on the side wall of the middle plate, and the adjusting screw is threadedly connected to the U-shaped frame.

10. An adjustable base for a wall-mounted laser pointer according to claim 5, characterized in that, The rotating rod is horizontally slidably connected to the rotating ring. Multiple adjustment holes are equally spaced along the axial direction of the rotating rod. The rotating ring is provided with positioning holes. Bolts are threaded between the positioning holes and the adjustment holes corresponding to their positions.

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