Double-beam Laser-based Lining Segment Dislocation Measurement Device and Measurement Method

Abstract

The present invention provides a lining segment offset measurement device and a measurement method based on dual-beam lasers, which relate to the technical field of shield construction. The lining segment offset measurement device based on dual-beam lasers includes a measuring body, a handheld part is fixedly connected to the measuring body, downward support feet are respectively and perpendicularly fixed at both ends of the measuring body, two parallel laser emitters for emitting lasers obliquely downward are fixedly connected to one side of the measuring body, a laser induction device for sensing two beams of lasers is fixed on the other side of the measuring body, and a control and processing device is further arranged on the measuring body. The control and processing device is electrically connected to the laser emitters and the laser induction device respectively. The present invention uses the optical path as a "ruler" to realize the turning amplification and direct measurement of the offset amount of the segments; in cooperation with other auxiliary devices, it conveniently and accurately realizes the measurement and recording of the offset amount of the segments at different positions; the structure is relatively simple, the cost is relatively low, and while ensuring the measurement accuracy, it also reduces the manual operation intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of shield construction, and particularly relates to a lining segment misalignment measuring device and a measuring method based on dual-beam lasers. Background Art

[0002] During the shield construction process, the phenomenon of segment misalignment is common. Severe segment misalignment will lead to adverse consequences such as local damage to the lining, uneven tail shield gaps, uneven tracks, and water leakage in the lining. Therefore, rapid and accurate measurement of segment misalignment is an important guarantee for eliminating segment misalignment and ensuring the assembly quality.

[0003] Existing segment misalignment measuring devices can be roughly divided into mechanical ranging type and laser ranging type according to their working principles. The mechanical ranging type directly measures the misalignment amount between adjacent segments by moving a measuring ruler; for example, in patents CN201520143009.8 and CN202110230679.3, the measuring device is fixed in the gap between two rings of segments, and by pushing the measuring ruler inside the device, the extended length of the measuring ruler is the segment misalignment amount. The laser ranging type calculates the misalignment amount between adjacent segments by recording the time difference or phase difference of the round-trip light beam; for example, in patents CN201720582610.6 and CN201620630241.9. On this basis, three-dimensional scanning technology obtains the position information of adjacent segments in the tunnel through a large number of laser scans and calculates the misalignment amount between adjacent segments; for example, in patents CN202111626349.2, CN201410726695.1, and CN201610286887.4.

[0004] The principle of the mechanical ranging type is simple and clear, and the structure is reliable, but it is inconvenient for manual measurement and reading, with large errors and time-consuming and laborious measurement; on the other hand, since the speed of light is approximately equal to 3x10 8 m / s, the measured time difference is in the order of nanoseconds, and the phase difference is in the order of nanoarcseconds. Therefore, the measurement accuracy requirements of the laser ranging type are too high, the technical threshold and cost are high, and it is difficult to be widely used in engineering. Summary of the Invention

[0005] In view of the problems and deficiencies of the prior art, the present invention provides a lining segment misalignment measuring ruler and a measuring method based on dual-beam lasers, which magnify the segment misalignment amount according to the principle of similar triangles of the light path and directly read the corresponding distance on the photosensitive element, with a simple structure, low cost, convenient operation, ensuring the measurement accuracy while also reducing the labor intensity of manual work.

[0006] The technical solution of the present invention is realized as follows:

[0007] The present invention first proposes a lining segment dislocation measurement device based on dual-beam lasers, including a measuring ruler body. A handheld part is fixedly connected to the measuring ruler body. Support feet extending downward are perpendicularly fixed to both ends of the measuring ruler body. Two parallel laser emitters for emitting lasers obliquely downward are fixedly connected to one side of the measuring ruler body. A laser sensing device for sensing the two beams of lasers is fixed to the other side of the measuring ruler body. A control and processing device is also provided on the measuring ruler body. The control and processing device is electrically connected to the laser emitters and the laser sensing device respectively. The control and processing device is used to calculate the dislocation height of the lining segment after receiving the information transmitted by the laser sensing device.

[0008] As a further technical solution, the measuring ruler body is a rectangular ruler body.

[0009] As a further technical solution, there are two support feet at each end of the measuring ruler body, and there are a total of four support feet. The support feet are cylindrical, and the bottom surface of the support feet is an arc surface.

[0010] As a further technical solution, the included angle between the laser emitter and the measuring ruler body is 45 degrees.

[0011] As a further technical solution, the control and processing device includes a signal amplifier, an A / D conversion circuit, a processing chip, a memory, and control keys. The laser sensing device, the signal amplifier, the A / D conversion circuit, and the processing chip are electrically connected in sequence. The memory and the control keys are both electrically connected to the processing chip.

[0012] As a further technical solution, a display is further included. The display is electrically connected to the processing chip and is fixed on the measuring ruler body.

[0013] As a further technical solution, a Bluetooth transmission module is further included. The Bluetooth transmission module is electrically connected to the processing chip.

[0014] As a further technical solution, the control keys are arranged on the handheld part, and the handheld part is a handheld rod.

[0015] Secondly, the present invention proposes a lining segment dislocation measurement method based on dual-beam lasers. The support feet at both ends of the measuring ruler body are respectively contacted with the front segment and the rear segment. The lasers of the two laser emitters are respectively irradiated onto the surfaces of the front segment and the rear segment. After being reflected by the front segment and the rear segment, the lasers are irradiated onto the laser sensing device, forming two spaced light spots. After the laser sensing device senses the light spots, it transmits the information to the control and processing device. The control and processing device calculates the dislocation height of the lining segment after receiving the information transmitted by the laser sensing device.

[0016] Advantages of the present invention: The stepped joint measuring device of the present invention uses the optical path as a "ruler" to achieve the turning amplification and direct measurement of the stepped joint amount of the segment. Compared with the existing mechanical rangefinder stepped joint measuring device, the measurement and reading are convenient, time-saving and labor-saving, the measurement efficiency is high, and the error is very small; compared with the existing laser rangefinder stepped joint measuring device, we measure the spot spacing instead of the time difference or phase difference, which greatly reduces the product cost while ensuring the measurement accuracy; the stepped joint measuring device of the present invention is combined with other auxiliary devices to conveniently and accurately measure and record the stepped joint amount of the segments at different positions. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the lining segment stepped joint measuring device based on two-beam lasers of the present invention;

[0019] Figure 2 Schematic diagram of the use state of the lining segment stepped joint measuring device based on two-beam lasers of the present invention;

[0020] Figure 3 Structural block diagram of the control and processing device in the present invention;

[0021] Figure 4 A measurement state diagram of the present invention;

[0022] Figure 5 For Figure 4 Optical path calculation schematic diagram in

[0023] Figure 6 Another measurement state diagram of the present invention;

[0024] Figure 7 For Figure 6 Optical path calculation schematic diagram in

[0025] In the figure: 1 - measuring ruler body; 2 - support feet; 3 - laser emitter; 4 - laser induction device; 5 - control and processing device; 6 - control buttons; 7 - handheld part; 81 - front segment; 82 - rear segment. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Referring Figures 1-3 , the present invention first proposes a lining segment misalignment measurement device based on dual-beam lasers, including a measuring ruler body 1. A handheld part 7 is fixedly connected to the measuring ruler body 1. At both ends of the measuring ruler body 1, downward support feet 2 are respectively and perpendicularly fixed. On one side of the measuring ruler body 1, two parallel laser emitters 3 for emitting lasers obliquely downward are fixedly connected. On the other side of the measuring ruler body 1, a laser induction device 4 for sensing two beams of lasers is fixed. A control processing device 5 is also arranged on the measuring ruler body 1. The control processing device 5 is electrically connected to the laser emitter 3 and the laser induction device 4 respectively. The control processing device 5 is used to calculate the misalignment height of the lining segment after receiving the information transmitted by the laser induction device 4.

[0028] As a further technical solution, the measuring ruler body 1 is a rectangular ruler body, with a length of 600 mm, a width of 50 mm, and a height of 40 mm. There are two support feet at each end of the measuring ruler body, and there are a total of four support feet. The support feet are cylindrical, and the bottom surface of the support feet is an arc surface.

[0029] As a further technical solution, the included angle between the laser emitter 3 and the measuring ruler body 1 is 45 degrees.

[0030] As a further technical solution, the control processing device 5 includes a signal amplifier, an A / D conversion circuit, a processing chip, a memory, and control buttons. The laser induction device 4, the signal amplifier, the A / D conversion circuit, and the processing chip are electrically connected in sequence. The memory and the control buttons are both electrically connected to the processing chip.

[0031] As a further technical solution, a display is further included. The display is electrically connected to the processing chip and is fixed on the measuring ruler body 1. A Bluetooth transmission module is also included, and the Bluetooth transmission module is electrically connected to the processing chip.

[0032] As a further technical solution, the control button 6 is arranged on the handheld part 7, and the handheld part 7 is a handheld rod. The handheld rod can be selected as a telescopic rod, and the telescopic rod can be connected to the measuring ruler body through a universal ball.

[0033] Double-beam laser-based lining segment offset measurement method. The support feet 2 at both ends of the measuring ruler body 1 are respectively in contact with the front segment 81 and the rear segment 82. The lasers of the two laser emitters 3 are respectively irradiated onto the surfaces of the front segment 81 and the rear segment 82. After being reflected by the front segment 81 and the rear segment 82, the lasers are irradiated onto the laser induction device 4, forming two spaced light spots. After the laser induction device 4 senses the light spots, it transmits the information to the control processing device 5. After receiving the information transmitted by the laser induction device, the control processing device 5 calculates the offset height of the lining segment. The specific process is as follows: after the laser induction device 4 senses the light spots, it forms corresponding analog signals. The laser induction device 4 transmits the analog signals to a signal amplifier for amplification. The signal amplifier then sends the amplified signals to an A / D conversion circuit to convert them into digital signals. The A / D conversion circuit sends the digital signals to a processing chip, and the processing chip calculates the offset height between the front segment and the rear segment. The offset height data is directly displayed through a display, or can be transmitted to a mobile terminal through a Bluetooth transmission module.

[0034] The principle and calculation formula are as follows:

[0035] (1) In one case, the front segment is higher than the rear segment, such as Figure 4 and Figure 5 :

[0036]

[0037]

[0038] (2) In another case, the front segment is lower than the rear segment, such as Figure 6 and Figure 7 :

[0039]

[0040]

[0041] The offset measurement device of the present invention uses the optical path as a "ruler" to realize the turning amplification and direct measurement of the offset amount of the segments. Compared with the existing mechanical ranging type offset measurement device, it is convenient to measure and read, saves time and effort, has high measurement efficiency, and very small errors; compared with the existing laser ranging type offset measurement device, we measure the light spot spacing instead of the time difference or phase difference, which greatly reduces the cost of the product while ensuring the measurement accuracy; the offset measurement device of the present invention cooperates with other auxiliary devices to conveniently and accurately measure and record the offset amounts of the segments at different positions.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for measuring the offset of lining segments based on dual-beam lasers, characterized in that: Including a lining segment dislocation measurement device based on dual-beam lasers, the lining segment dislocation measurement device based on dual-beam lasers includes a measuring ruler body, a handheld part is fixedly connected to the measuring ruler body, downward support feet are respectively and perpendicularly fixed at both ends of the measuring ruler body, two parallel laser emitters for emitting lasers obliquely downward are fixedly connected to one side of the measuring ruler body, a laser induction device for sensing two beams of lasers is fixed on the other side of the measuring ruler body, and a control processing device is further arranged on the measuring ruler body. The control processing device is electrically connected to the laser emitter and the laser induction device respectively, and the control processing device is used to calculate the dislocation height of the lining segment after receiving the information transmitted by the laser induction device; Contact the support feet at both ends of the measuring ruler body with the front segment and the rear segment respectively. The lasers of the two laser emitters are respectively irradiated on the surfaces of the front segment and the rear segment. After being reflected by the front segment and the rear segment, the lasers are irradiated on the laser induction device, forming two spaced light spots. After the laser induction device senses the light spots, it transmits the information to the control processing device. After receiving the light spot spacing information transmitted by the laser induction device, the control processing device calculates the dislocation height of the lining segment.

2. The method for measuring the offset of the lining segment based on dual-beam lasers according to claim 1, wherein: The measuring ruler body is a rectangular ruler body.

3. The method for measuring the offset of the lining segment based on dual-beam lasers according to claim 1, wherein: There are two support feet at each end of the measuring ruler body, and there are a total of four support feet. The support feet are cylindrical, and the bottom surface of the support feet is an arc surface.

4. The method for measuring the dislocation of the lining segment based on dual-beam lasers according to claim 1, wherein: The included angle between the laser emitter and the measuring ruler body is 45 degrees.

5. The method for measuring the dislocation of segment lining based on dual-beam laser according to any one of claims 1-4, characterized in that: The control processing device includes a signal amplifier, an A / D conversion circuit, a processing chip, a memory and control buttons. The laser induction device, the signal amplifier, the A / D conversion circuit and the processing chip are electrically connected in sequence. The memory and the control buttons are both electrically connected to the processing chip.

6. The method for measuring the misalignment of lining segments based on dual-beam lasers according to claim 5, characterized in that: It further includes a display, the display is electrically connected to the processing chip, and the display is fixed on the measuring ruler body.

7. The method for measuring the dislocation of the lining segment based on dual-beam lasers according to claim 6, characterized in that: It further includes a Bluetooth transmission module, and the Bluetooth transmission module is electrically connected to the processing chip.

8. The method for measuring the offset of the lining segment based on dual-beam lasers according to claim 5, characterized in that: The control buttons are arranged on the handheld part, and the handheld part is a handheld rod.

Images