Portable tunnel secondary lining thickness laser measuring device

Abstract

The utility model relates to the field of laser measurement technology, concretely is a kind of portable tunnel second lining thickness laser measuring device, including base, slidingly connected with sliding seat on base, measurement component is arranged on sliding seat, and measurement component includes magnetic attraction slider and laser range finder, magnetic attraction slider is slidingly connected on sliding seat, laser range finder is fixedly connected on magnetic attraction slider, adjusting component is also arranged on sliding seat, and adjusting component includes second pointer and horizontal scale line, second pointer is fixedly connected on sliding seat, and horizontal scale line is arranged on base;The utility model can be adjusted own position in use, to make device adjust to the central place of tunnel second lining, to make the function formula formed by the three-dimensional coordinate measured can be simplified, the three-dimensional model of tunnel second lining is constructed, and then whether tunnel second lining thickness meets standard is calculated.

Description

Technical Field

[0001] This utility model relates to the field of laser measurement technology, specifically a portable laser measurement device for tunnel secondary lining thickness. Background Technology

[0002] Measuring the thickness of the tunnel lining is a crucial step in ensuring the safety of tunnel engineering. A laser rangefinder can be used to measure the distance to a large number of points on the tunnel lining, thereby establishing a coordinate system, determining the three-dimensional coordinates of each point on the tunnel lining, and then obtaining data such as the shape and thickness of the tunnel lining by building a three-dimensional model.

[0003] Since the tunnel lining and the tunnel interior have the same arched shape, when measuring the distances at various locations on the tunnel lining using a laser rangefinder and constructing a coordinate system, a corresponding function can be obtained based on the coordinates of different points. In order to simplify the function formula as much as possible, the laser rangefinder should be placed as close as possible to the center of the tunnel lining for measurement. Therefore, a new type of laser measuring device is needed so that the device can be easily moved to the center of the tunnel lining for measurement. Utility Model Content

[0004] To address the aforementioned technical problems, this invention proposes a portable laser measurement device for tunnel lining thickness. This device allows for easy adjustment of its position during use, positioning it at the center of the tunnel lining. This simplifies the function formula derived from the measured three-dimensional coordinates, facilitating the construction of a three-dimensional model of the tunnel lining and enabling the calculation of whether the tunnel lining thickness meets the standards.

[0005] The technical solution to achieve the purpose of this utility model is as follows: a portable laser measuring device for tunnel secondary lining thickness, including a base, a sliding seat slidably connected to the base, a measuring component disposed on the sliding seat, the measuring component including a magnetic slider and a laser rangefinder, the magnetic slider being slidably connected to the sliding seat, the laser rangefinder being fixedly connected to the magnetic slider, and an adjustment component disposed on the sliding seat, the adjustment component including a second pointer and a horizontal scale line, the second pointer being fixedly connected to the sliding seat, and the horizontal scale line being disposed on the base.

[0006] Preferably, the measuring component further includes a sliding hole and a limiting block. The sliding hole is formed on the sliding seat, and the limiting block is fixedly connected to the magnetic slider and slidably connected inside the sliding hole.

[0007] Preferably, the measuring component further includes a first pointer and an angle scale line, the first pointer being fixedly connected to the limiting block, the angle scale line being disposed on the sliding seat, and the first pointer cooperating with the angle scale line.

[0008] Preferably, the adjustment component further includes a groove and transmission teeth. The groove is formed on the base, and the transmission teeth are fixedly connected to the inside of the groove. A plurality of transmission teeth are distributed in a linear array inside the groove.

[0009] Preferably, the adjusting component further includes a gear, which is rotatably connected to the interior of the sliding seat, and the bottom end of the gear meshes with the transmission teeth inside the groove.

[0010] Preferably, the adjusting assembly further includes a housing, a worm gear, and a worm wheel. The housing is fixedly connected to the sliding seat, and the worm gear and the worm wheel are rotatably connected inside the housing. The worm wheel is fixedly connected to a gear, and the worm gear meshes with the worm wheel.

[0011] Preferably, the adjustment assembly further includes a knob, which is rotatably connected to the housing and fixedly connected to the worm gear.

[0012] Compared with the prior art, the significant advantages of this utility model are:

[0013] Firstly, in this invention, when the magnetic slider is located at both ends of the sliding seat, the laser rangefinder will be in a horizontal state, and the laser emitted by it will be directed horizontally. Therefore, the distance from the laser rangefinder to both ends of the tunnel lining can be obtained. When the device is located in the center of the tunnel, the distance measured by the laser rangefinder to both ends of the tunnel lining should be the same. When the two measured distances are different, the position of the sliding seat and the laser rangefinder can be adjusted by moving the sliding seat, thereby moving the device and the laser rangefinder to the center of the tunnel. When adjusting the position of the sliding seat, precise adjustment can be achieved by observing the second pointer and the horizontal scale line. At this time, the center position of the bottom of the sliding seat can be regarded as the origin of the coordinates. The laser rangefinder measures various positions of the tunnel lining and obtains the corresponding coordinates.

[0014] Secondly, in this invention, when measuring the coordinate distances of various points on the secondary lining of a tunnel using a laser rangefinder to determine the coordinates, a magnetic slider can be slid to rotate the laser rangefinder on a sliding seat. This allows the laser emitted by the laser rangefinder to be directed to various positions on the secondary lining of the tunnel. By observing the corresponding scale on the first pointer and the angle scale line, the angle of the laser emitted by the laser rangefinder can be obtained. By constructing a right triangle and calculating the coordinates of the points on the secondary lining of the tunnel hit by the laser using trigonometric functions, a three-dimensional model of the secondary lining of the tunnel can be simulated after obtaining a large number of point coordinates within the secondary lining of the tunnel. Through the model, the function corresponding to the arched contour of the secondary lining of the tunnel can be obtained. The calculated and actual coordinates of various positions on the secondary lining of the tunnel can then be obtained through function calculation. Based on the difference between the calculated and actual coordinates, the difference between the actual and calculated thicknesses of the secondary lining of the tunnel can be calculated. By judging the magnitude of the difference, it can be determined whether the thickness of various positions within the secondary lining of the tunnel meets the standard. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0018] Figure 3 This utility model Figure 1 The diagram shows an enlarged view of part A.

[0019] Figure 4 This is a schematic diagram of the connection structure between the sliding seat and the adjustment component in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Base; 2. Sliding seat; 3. Measuring component; 31. Magnetic slider; 32. Laser rangefinder; 33. Sliding hole; 34. Limiting block; 35. First pointer; 36. Angle scale line; 4. Adjustment component; 41. Second pointer; 42. Horizontal scale line; 43. Groove; 44. Transmission gear; 45. Gear; 46. Housing; 47. Worm; 48. Worm wheel; 49. Knob. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only 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 protection scope of the present invention.

[0023] This utility model provides an improved portable laser measurement device for tunnel secondary lining thickness. The technical solution of this utility model is as follows:

[0024] like Figures 1-4 As shown, a portable laser measurement device for tunnel secondary lining thickness includes a base 1, a sliding seat 2 slidably connected to the base 1, and a measurement component 3 mounted on the sliding seat 2. The measurement component 3 includes a magnetic slider 31 and a laser rangefinder 32. The magnetic slider 31 is slidably connected to the sliding seat 2, and the laser rangefinder 32 is fixedly connected to the magnetic slider 31. The surface of the sliding seat 2 is made of iron alloy. The magnetic slider 31 can be magnetically attracted to the surface of the sliding seat 2, so that the laser rangefinder 32 and the magnetic slider 31 are kept fixed together. The magnetic slider 31 can be manually slid to adjust the laser emission angle of the laser rangefinder 32, so as to perform laser ranging at different positions on the tunnel secondary lining surface. Through laser ranging, the coordinates of various positions on the tunnel secondary lining surface can be obtained. Using a large number of coordinates, a three-dimensional model of the tunnel secondary lining surface can be simulated, and a three-dimensional model of the tunnel secondary lining surface can be obtained. The function corresponding to the type represents the smooth surface of the tunnel secondary lining. Therefore, by calculating the difference between the calculated coordinates and the actual coordinates of each position in the tunnel secondary lining, it can be determined whether the actual thickness of each position in the tunnel secondary lining meets the standard. The sliding seat 2 is also equipped with an adjustment component 4, which includes a second pointer 41 and a horizontal scale line 42. The second pointer 41 is fixedly connected to the sliding seat 2, and the horizontal scale line 42 is set on the base 1. The horizontal scale line 42 is used to precisely control the position of the sliding seat 2 when it is moved, so that the sliding seat 2 can be moved to the center of the tunnel. At this time, the position of the sliding seat 2 can be regarded as the origin of the coordinates. When the coordinates of each position on the tunnel secondary lining are measured with this as the origin of the coordinates, the statistical function formula will be simplified to the greatest extent, so as to facilitate the calculation and simulation of the three-dimensional model of the tunnel secondary lining.

[0025] In this embodiment, the measuring component 3 also includes a sliding hole 33 and a limiting block 34. The sliding hole 33 is formed on the sliding seat 2, and the limiting block 34 is fixedly connected to the magnetic slider 31. The limiting block 34 is slidably connected inside the sliding hole 33. When the limiting block 34 slides inside the sliding hole 33, it can stabilize the magnetic slider 31 and prevent the magnetic slider 31 from falling off the sliding seat 2.

[0026] In this embodiment, the measuring component 3 also includes a first pointer 35 and an angle scale line 36. The first pointer 35 is fixedly connected to the limiting block 34, and the angle scale line 36 is set on the sliding seat 2. The first pointer 35 and the angle scale line 36 cooperate with each other. When the magnetic slider 31 moves, the first pointer 35 can point to different positions on the angle scale line 36 to know the angle of the laser emitted by the laser rangefinder 32 at this time. The laser rangefinder 32 measures the distance, and with the angle data, the specific coordinates of the position where the laser hits can be calculated by trigonometric functions.

[0027] In this embodiment, the adjustment component 4 further includes a groove 43 and a transmission tooth 44. The groove 43 is formed on the base 1, and the transmission tooth 44 is fixedly connected to the inside of the groove 43. Multiple transmission teeth 44 are distributed in a linear array inside the groove 43.

[0028] In this embodiment, the adjustment component 4 also includes a gear 45, which is rotatably connected to the inside of the sliding seat 2, and the bottom end of the gear 45 meshes with the transmission teeth 44 inside the groove 43.

[0029] In this embodiment, the adjustment component 4 also includes a housing 46, a worm 47, and a worm wheel 48. The housing 46 is fixedly connected to the sliding seat 2. The worm 47 and the worm wheel 48 are rotatably connected inside the housing 46. The worm wheel 48 is fixedly connected to the gear 45. The worm wheel 48 and the gear 45 are fixedly connected to the same shaft, so they rotate synchronously. The worm 47 meshes with the worm wheel 48. By rotating the worm 47, the worm wheel 48 is driven to rotate, which in turn causes the gear 45 to rotate. The gear 45 meshes with the transmission gear 44, which causes the sliding seat 2 to move on the base 1. Since the meshing of the worm 47 and the worm wheel 48 has a self-locking effect, the sliding seat 2 can be prevented from shifting during the use of the laser rangefinder 32.

[0030] In this embodiment, the adjustment component 4 also includes a knob 49, which is rotatably connected to the housing 46 and fixedly connected to the worm gear 47. The knob 49 can be manually operated to make the worm gear 47 rotate.

[0031] The specific working method is as follows: First, place the device inside the tunnel, close to the center of the tunnel. Then, slide the magnetic slider 31 to adjust the position of the laser rangefinder 32 on the sliding seat 2. Slide the magnetic slider 31 twice, moving it to either end of the sliding seat 2. When the magnetic slider 31 is at either end of the sliding seat 2, the laser rangefinder 32 will be in a horizontal position, emitting a horizontal laser beam. Therefore, the distance from the laser rangefinder 32 to both ends of the tunnel lining can be obtained. When the device is in the center of the tunnel, the laser... The distances measured by the optical rangefinder 32 to both ends of the tunnel lining should be the same. When the two measured distances are different, the position of the sliding seat 2 and the laser rangefinder 32 can be adjusted by moving the sliding seat 2, so that the device and the laser rangefinder 32 are moved to the center of the tunnel. When adjusting the position of the sliding seat 2, precise adjustment can be achieved by observing the second pointer 41 and the horizontal scale line 42. At this time, the center position of the bottom of the sliding seat 2 can be regarded as the origin of the coordinates. The laser rangefinder 32 measures various positions on the tunnel lining surface and obtains the corresponding coordinates.

[0032] When determining the coordinates of various points on the secondary lining of the tunnel by measuring the coordinate distance of each point using the laser rangefinder 32, the magnetic slider 31 can be slid to rotate the laser rangefinder 32 on the sliding seat 2, so that the laser emitted by the laser rangefinder 32 can be directed to various positions on the secondary lining of the tunnel. By observing the corresponding scale on the first pointer 35 and the angle scale line 36, the angle of the laser emitted by the laser rangefinder 32 can be obtained. By constructing a right triangle and calculating the coordinates of the points on the secondary lining of the tunnel hit by the laser using trigonometric functions, a three-dimensional model of the secondary lining of the tunnel can be simulated after obtaining a large number of point coordinates within the secondary lining of the tunnel. Through the model, the function corresponding to the arched profile of the secondary lining of the tunnel can be obtained. The calculated and actual coordinates of various positions on the secondary lining of the tunnel can be obtained through function calculation. Based on the difference between the calculated coordinates and the actual coordinates, the difference between the actual thickness and the calculated thickness of the secondary lining of the tunnel can be calculated. By judging the magnitude of the difference, it can be determined whether the thickness of various positions within the secondary lining of the tunnel meets the standard.

[0033] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A portable laser measuring device for tunnel secondary lining thickness, comprising a base (1), characterized in that: A sliding seat (2) is slidably connected to the base (1). A measuring component (3) is provided on the sliding seat (2). The measuring component (3) includes a magnetic slider (31) and a laser rangefinder (32). The magnetic slider (31) is slidably connected to the sliding seat (2). The laser rangefinder (32) is fixedly connected to the magnetic slider (31). An adjustment component (4) is also provided on the sliding seat (2). The adjustment component (4) includes a second pointer (41) and a horizontal scale line (42). The second pointer (41) is fixedly connected to the sliding seat (2). The horizontal scale line (42) is provided on the base (1).

2. The portable laser measuring device for tunnel secondary lining thickness according to claim 1, characterized in that: The measuring component (3) also includes a sliding hole (33) and a limiting block (34). The sliding hole (33) is opened on the sliding seat (2), and the limiting block (34) is fixedly connected to the magnetic slider (31). The limiting block (34) is slidably connected inside the sliding hole (33).

3. The portable laser measurement device for tunnel secondary lining thickness according to claim 2, characterized in that: The measuring component (3) also includes a first pointer (35) and an angle scale line (36). The first pointer (35) is fixedly connected to the limiting block (34), and the angle scale line (36) is set on the sliding seat (2). The first pointer (35) cooperates with the angle scale line (36).

4. The portable laser measuring device for tunnel secondary lining thickness according to claim 1, characterized in that: The adjustment component (4) also includes a groove (43) and a transmission tooth (44). The groove (43) is opened on the base (1), and the transmission tooth (44) is fixedly connected to the inside of the groove (43). Multiple transmission teeth (44) are distributed in a linear array inside the groove (43).

5. The portable laser measuring device for tunnel secondary lining thickness according to claim 4, characterized in that: The adjustment component (4) also includes a gear (45), which is rotatably connected to the inside of the sliding seat (2), and the bottom end of the gear (45) meshes with the transmission teeth (44) inside the groove (43).

6. The portable laser measuring device for tunnel secondary lining thickness according to claim 5, characterized in that: The adjustment assembly (4) further includes a housing (46), a worm (47) and a worm wheel (48). The housing (46) is fixedly connected to the sliding seat (2). The worm (47) and the worm wheel (48) are rotatably connected inside the housing (46). The worm wheel (48) is fixedly connected to the gear (45), and the worm (47) meshes with the worm wheel (48).

7. The portable laser measuring device for tunnel secondary lining thickness according to claim 6, characterized in that: The adjustment assembly (4) also includes a knob (49), which is rotatably connected to the housing (46) and fixedly connected to the worm gear (47).

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