Integrated detector for segment joint and slab staggering

Abstract

The invention relates to the field of segment joint detection, and discloses a segment joint dislocation integrated detector, which comprises a first measuring part, a second measuring part, a third measuring part and a fourth measuring part, a laser transmitter II is mounted on one side of the measuring part II; the first measuring part and the second measuring part are installed at the top and the bottom of one side of the shell respectively, and the far sides of the first measuring part and the second measuring part are used for making contact with the close sides of the first segment and the second segment respectively; the first measuring part is fixedly connected in the shell, one side of the first measuring part and the first laser transmitter are located outside the shell, and the second measuring part and the second laser transmitter are both movably arranged in the shell. According to the invention, the laser transmitter I and the laser transmitter II are connected with the measuring part I and the measuring part II, the measuring part II can move in the shell, and the distance difference between the segment and the laser is detected through the laser transmitters, so that the slab staggering quantity is calculated, manual detection is avoided, and the convenience and accuracy of slab staggering quantity detection are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of pipe segment joint detection, and in particular to a pipe segment joint misalignment integrated detector. Background Art

[0002] The amount of gapping and misalignment in shield tunnel segment joints is a key indicator of tunnel construction quality, directly impacting the overall stability, waterproofing, and long-term durability of the structure. With the continuous expansion of urban underground space development, tunnel engineering projects are placing increasingly stringent demands on segment assembly accuracy. However, in actual construction, affected by factors such as geological conditions, assembly processes, and load variations, gapping and misalignment remain difficult to completely avoid. Improper control can lead to water leakage and loose bolts at best, and structural deformation and even partial collapse at worst, seriously impacting the safe operation of the tunnel. Therefore, in-depth research into the influencing mechanism of joint deformation and optimization of construction control measures are of great significance to ensuring the engineering quality and service life of shield tunnels.

[0003] As shield tunneling projects move toward greater depths, longer distances, and more complex strata, the requirements for monitoring segment joint opening and misalignment are becoming increasingly stringent. Currently, conventional measurement methods include feeler gauge measurement, a straightedge combined with a wedge-shaped feeler gauge, dial / micrometer monitoring, and total station measurement.

[0004] Feeler gauge measurement, the most basic method for detecting joint opening, is simple to operate and inexpensive, but it only captures discrete data at local points. The results are significantly affected by operator experience, and real-time data recording and transmission are not possible. While a combination of a straightedge and a wedge-shaped feeler gauge can detect misalignment, it suffers from low measurement efficiency, making it difficult to achieve full cross-section coverage, and its accuracy is easily affected by the surface flatness of the segment. Summary of the Invention

[0005] In response to the deficiencies of the prior art, the present invention provides an integrated detector for segment joint misalignment, which solves the problem in the prior art that the commonly used traditional measurement methods are greatly affected by the operator's experience, have low measurement efficiency, and have large errors in measurement results.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a segment joint misalignment integrated detector, comprising:

[0007] a measuring part 1, a laser transmitter 1 being mounted on one side thereof;

[0008] a second measuring part, a second laser transmitter being mounted on one side thereof;

[0009] The housing, the measuring part 1 and the measuring part 2 are respectively mounted on the top and bottom of one side of the housing, and the distal sides of the measuring part 1 and the measuring part 2 are respectively used to contact the proximal sides of the pipe segment 1 and the pipe segment 2;

[0010] The measuring part 1 is fixedly connected in the shell, and one side of the measuring part 1 and the laser emitter 1 are located outside the shell, and the measuring part 2 and the laser emitter 2 are both movably arranged in the shell.

[0011] Preferably, a through hole is provided on one side of the housing, and a middle side of the first measuring part and the first laser emitter are located in the through hole.

[0012] Preferably, a self-resetting displacement sensor is fixedly connected to the inner top of one side of the housing, a measuring pin at the output end of the self-resetting displacement sensor is located in the through hole, and the bottom of the measuring pin contacts the top surface of the second measuring part.

[0013] Preferably, an electric push rod is fixedly connected to the inner bottom of the other side of the shell, and the output end of the electric push rod is fixedly connected to the bottom of the other side of the measuring part 2, which is used to drive the measuring part 2 and the laser emitter 2 to move in the shell in a direction close to or away from the measuring part 1.

[0014] Preferably, a pressure sensor is provided between the electric push rod and the second measuring part, and the pressure sensor is used to monitor the pressure generated when the electric push rod extends the output end to push the second measuring part to move.

[0015] Preferably, a slide rail is fixedly connected to the middle of the measuring part 1, the slide rail passes through the measuring part 2, and the slide rail and the measuring part 2 are slidably connected.

[0016] Preferably, the cross section of the measuring part 1 is set to be a transverse U-shape, and the opening is on the same side as the through hole on one side of the shell, and the middle part of the measuring part 2 is in the middle part of the measuring part 1.

[0017] Preferably, a measurement button is installed in the middle of the outer wall of the shell, and a display screen and a controller are installed on the outer wall of the shell. The controller is electrically connected to the measurement button, controller, display screen, laser emitter 1, laser emitter 2, self-resetting displacement sensor, electric push rod and pressure sensor.

[0018] The present invention provides an integrated detector for detecting misalignment of pipe segments. It has the following beneficial effects:

[0019] 1. The present invention connects laser emitter 1 and laser emitter 2 to measuring part 1 and measuring part 2, and measuring part 2 is movable within the housing. Therefore, when the measuring part 2 contacts the distal side of measuring part 1 with the proximal side of pipe segment 1 and pipe segment 2, the laser emitter 1 and laser emitter 2 can be used to detect the distance between one side of pipe segment 2 and pipe segment 1 and laser emitter 1 and laser emitter 2. By subtracting the readings of laser emitter 1 and laser emitter 2, the misalignment amount can be detected, avoiding manual measurement using tools, thereby greatly improving the convenience and accuracy of misalignment detection.

[0020] 2. The present invention installs a self-resetting displacement sensor inside the housing, and makes its measuring probe contact with the second measuring part. Therefore, when the second measuring part moves, the measuring probe will be squeezed and compressed. By summing the contracted size of the measuring probe and the thickness of the measuring part one between the first and second pipe segments, the gap between the first and second pipe segments, that is, the opening amount, can be obtained, avoiding the need for manual measurement using tools, thereby making the measurement of the opening amount convenient and accurate.

[0021] 3. The present invention utilizes an electric push rod to drive the measuring part 2 to move, and utilizes a pressure sensor to detect the pressure received by the measuring part 2, thereby preventing the measuring part 2 from being deformed due to a large pressure, and the measurement data can be displayed in real time through the display screen, thereby improving the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 Schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the display screen structure of the present invention;

[0025] Figure 4 A top view of the measuring portion of the present invention;

[0026] Figure 5 It is a front cross-sectional view of the measuring part of the present invention.

[0027] Among them, 1. Shell; 2. Measuring part 1; 3. Laser emitter 1; 4. Measuring part 2; 5. Laser emitter 2; 6. Self-resetting displacement sensor; 7. Measuring needle; 8. Electric push rod; 9. Pressure sensor; 10. Slide rail; 11. Display screen; 12. Measuring button; 13. Controller; 14. Segment 1; 15. Segment 2. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In order to better understand the present invention, the above contents are described in detail below in conjunction with specific embodiments.

[0030] Please see the attached Figure 1 -Attached Figure 5 An embodiment of the present invention provides an integrated detector for detecting misalignment of pipe segments, comprising: a measuring part 2, one side of which is mounted a laser emitter 3; a measuring part 4, one side of which is mounted a laser emitter 2 5; a housing 1, wherein the measuring part 1 2 and the measuring part 2 4 are respectively mounted on the top and bottom of one side of the housing 1, and the far sides of the measuring part 1 2 and the measuring part 2 4 are respectively used to contact the proximal sides of the pipe segment 14 and the pipe segment 2 15; the measuring part 1 2 is fixedly connected to the housing 1, and one side of the measuring part 1 2 and the laser emitter 1 3 are located outside the housing 1, and the measuring part 2 4 and the laser emitter 2 5 are both movably arranged in the housing 1.

[0031] In this embodiment, the laser emitter 1 3 and the laser emitter 2 5 can be installed respectively through the measuring part 1 2 and the measuring part 2 4. At the same time, since the measuring part 1 2 is fixedly connected to the outer shell 1, and the measuring part 2 4 is movably arranged in the outer shell 1, during detection, by moving the measuring part 2 4, the far sides of the measuring part 1 2 and the measuring part 2 4 can be made to contact the near sides between the pipe segment 1 14 and the pipe segment 2 15 respectively. At this time, the readings of the laser emitter 1 3 and the laser emitter 2 5 can be used to know the difference in the distance between the pipe segment 2 15 and the laser emitter 1 3, and the distance between the pipe segment 1 14 and the laser emitter 2 5. Through these two distance differences, the amount of misalignment between the pipe segment 14 and the pipe segment 2 15 can be known.

[0032] Please see the attached Figure 1 and Figure 2 A through hole is provided on one side of the housing 1, and the middle side of the measuring unit 2 and the laser emitter 3 are located within the through hole. A self-resetting displacement sensor 6 is fixedly connected to the inner top of one side of the housing 1. A stylus 7 at the output end of the self-resetting displacement sensor 6 is located within the through hole, and the bottom of the stylus 7 contacts the top surface of the measuring unit 4.

[0033] In this embodiment, a self-resetting displacement sensor 6 is installed in the housing 1, and the bottom of the measuring needle 7 at the output end of the self-resetting displacement sensor 6 is in contact with the top surface of the measuring part 2 4. Therefore, when the measuring part 2 4 moves, the measuring needle 7 will be squeezed and compressed. The compression amount of the measuring needle 7 plus the thickness of the measuring part 2 on one side between the pipe segment 14 and the pipe segment 2 15 is the opening amount.

[0034] Please see the attached Figure 1 and Figure 2 An electric push rod 8 is fixedly connected to the inner bottom of the other side of the housing 1. The output end of the electric push rod 8 is fixedly connected to the bottom of the other side of the measuring section 2 4, and is used to drive the measuring section 2 4 and the laser emitter 2 5 to move within the housing 1 in a direction toward or away from the measuring section 1 2. A pressure sensor 9 is provided between the electric push rod 8 and the measuring section 2 4. The pressure sensor 9 is used to monitor the pressure generated when the electric push rod 8 extends its output end to push the measuring section 2 4. A slide rail 10 is fixedly connected to the middle of the measuring section 1 2. The slide rail 10 passes through the measuring section 2 4 and is in sliding connection with the measuring section 2 4.

[0035] In this embodiment, the electric push rod 8 can drive the measuring part 2 4 to slide along the slide rail 10 in the shell 1, and a pressure sensor 9 is also provided between the electric push rod 8 and the measuring part 2 4. Therefore, the pressure sensor 9 can be used to know whether the measuring part 2 4 is in contact with the pipe segment 1 14, that is, when the electric push rod 8 pushes the measuring part 2 4, the electric push rod 8 will exert squeezing force on the measuring part 2 4, and when the measuring part 2 4 is in contact with the pipe segment 1 14, the measuring part 2 4 will not move at this time, so the squeezing force of the electric push rod 8 will all act on the pressure sensor 9, which will cause the reading of the pressure sensor 9 to increase sharply. Therefore, it is possible to determine whether the measuring part 2 4 is in contact with the pipe segment 1 14 through the reading of the pressure sensor 9, and through the monitoring of the pressure sensor 9, it can be avoided that the electric push rod 8 exerts a large pressure on the measuring part 2 4, causing the measuring part 2 4 to deform.

[0036] Please see the attached Figure 1 、 Figure 2 and Figure 4 The cross-section of measuring section 1 (2) is arranged in a transverse U-shape, with its opening on the same side as the through-hole on one side of the housing (1). The center of measuring section 2 (4) is located in the center of measuring section 1 (2). A measurement button 12 is mounted in the center of the outer wall of the housing (1). A display screen 11 and a controller 13 are mounted on the outer wall of the housing (1). Controller 13 is electrically connected to measurement button 12, controller 13, display screen 11, laser emitter 1 (3), laser emitter 2 (5), self-resetting displacement sensor 6, electric actuator 8, and pressure sensor 9.

[0037] In this embodiment, by setting the measuring part 1 2 into a horizontal U-shape, after the measurement is completed, the measuring part 2 4 can enter the measuring part 1 2, thereby achieving a folding effect between the measuring part 1 2 and the measuring part 2 4, thereby reducing the length of the combined measuring part 1 2 and the measuring part 2 4, so that the device can be inserted into a smaller gap. In addition, through the cooperation between the measurement button 12, the display screen 11 and the controller 13, the fully automatic detection of the device can be achieved, that is:

[0038] During measurement, the device is moved to insert one side of the measuring part 2 into the gap between the pipe segment 14 and the pipe segment 2 15, and the measuring button 12 is pressed to generate a signal. After receiving the signal, the controller 13 drives the electric push rod 8, laser emitter 1 3, laser emitter 2 5, pressure sensor 9 and self-resetting displacement sensor 6 to move. After receiving the signals from the laser emitter 1 3, laser emitter 2 5, pressure sensor 9 and self-resetting displacement sensor 6, the controller 13 calculates the misalignment and opening amount between the pipe segment 14 and the pipe segment 2 15, and then displays them in real time on the display screen 11. After the detection is completed, the measuring case 12 sends a signal to the controller 13 to reset the electric push rod 8, laser emitter 1 3, laser emitter 2 5, pressure sensor 9 and self-resetting displacement sensor 6. At this time, the next measurement can be carried out.

[0039] Working principle: When in use, the device can be picked up by holding the housing 1, which can then be driven to move the device. When measuring, the measuring part 1 2 is inserted between the pipe segment 1 14 and the pipe segment 2 15;

[0040] Then, by pressing the measuring button 12, the measuring button 12 activates the controller 13, prompting the controller 13 to drive the electric push rod 8 to extend the output end, thereby pushing the measuring part 2 4 to move along the guide rail in the housing 1, and at this time the measuring part 2 4 will move away from the measuring part 1 2, and at the same time squeeze the measuring needle 7 of the self-resetting displacement sensor 6 to compress it, and when the far sides of the measuring part 2 4 and the measuring part 1 2 are in contact with the near sides of the pipe segment 1 14 and the pipe segment 2 15 respectively, the reading received by the pressure sensor 9 will suddenly increase, and then the pressure sensor 9 transmits the pressure signal to the controller 13, and then the controller 13 will send a signal to stop the operation of the electric push rod 8 and keep its position unchanged, and at the same time turn on the laser emitter 1 3 and the laser emitter 2 5;

[0041] At this time, the difference between the readings of laser emitter 1 3 and laser emitter 2 5, that is, the difference between the distance between segment 1 14 and laser emitter 2 5, and the distance between segment 2 15 and laser emitter 1 3, is the misalignment amount, that is: misalignment amount = laser emitter 1 3 reading minus laser emitter 2 5 reading;

[0042] The compression amount of the measuring needle 7 can be used to determine the spacing between the adjacent segments 14 and 15. The sum of this spacing and the thickness of the measuring portion 1 between the segments 14 and 15 is the opening amount, which is:

[0043] Opening amount = compressed length of measuring needle 7 + thickness of measuring part 1 2 between segment 1 14 and segment 2 15;

[0044] At the same time, the thickness of the measuring part 2 on one side between the pipe segment 14 and the pipe segment 2 15 can be preset, and the compressed length of the measuring needle 7 is automatically summed with the preset thickness, and then during measurement, the misalignment and opening amount are directly digitally displayed on the display screen 11.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The integrated detector for segment joint misalignment is characterized by: include: A measuring part (2) having a laser transmitter (3) mounted on one side thereof; A second measuring part (4), a second laser emitter (5) being mounted on one side thereof; A housing (1), wherein the measuring portion 1 (2) and the measuring portion 2 (4) are respectively mounted on the top and bottom of one side of the housing (1), and the distal sides of the measuring portion 1 (2) and the measuring portion 2 (4) are respectively used to contact the proximal sides of the pipe segment 1 (14) and the pipe segment 2 (15); The measuring part 1 (2) is fixedly connected to the housing (1), and one side of the measuring part 1 (2) and the laser emitter 1 (3) are located outside the housing (1), and the measuring part 2 (4) and the laser emitter 2 (5) are both movably arranged in the housing (1).

2. The integrated detector for detecting misalignment of pipe segments according to claim 1, characterized in that: A through hole is provided on one side of the housing (1), and a middle side of the measuring part (2) and the laser emitter (3) are located in the through hole.

3. The integrated detector for detecting misalignment of pipe segments according to claim 2, characterized in that: A self-resetting displacement sensor (6) is fixedly connected to the inner top of one side of the housing (1), a measuring needle (7) at the output end of the self-resetting displacement sensor (6) is located in the through hole, and the bottom of the measuring needle (7) contacts the top surface of the second measuring part (4).

4. The integrated detector for detecting misalignment of pipe segments according to claim 3, characterized in that: An electric push rod (8) is fixedly connected to the inner bottom of the other side of the housing (1), and the output end of the electric push rod (8) is fixedly connected to the bottom of the other side of the measuring part 2 (4), and is used to drive the measuring part 2 (4) and the laser emitter 2 (5) to move in the housing (1) in a direction close to or away from the measuring part 1 (2).

5. The integrated detector for detecting misalignment of pipe segments according to claim 4, characterized in that: A pressure sensor (9) is provided between the electric push rod (8) and the second measuring part (4), and the pressure sensor (9) is used to monitor the pressure generated when the electric push rod (8) extends out of the output end to push the second measuring part (4) to move.

6. The integrated detector for detecting misalignment of pipe segments according to claim 5, characterized in that: A slide rail (10) is fixedly connected to the middle of the measuring part 1 (2), the slide rail (10) passes through the measuring part 2 (4), and the slide rail (10) and the measuring part 2 (4) are slidably connected.

7. The integrated detector for detecting misalignment of pipe segments according to claim 6, characterized in that: The cross section of the measuring part 1 (2) is arranged to be a transverse U-shape, and the opening is located on the same side as the through hole on one side of the housing (1), and the middle of the measuring part 2 (4) is located in the middle of the measuring part 1 (2).

8. The integrated detector for detecting misalignment of pipe segments according to claim 5, characterized in that: A measuring button (12) is installed in the middle of the outer wall of the housing (1), and a display screen (11) and a controller (13) are installed on the outer wall of the housing (1). The controller (13) is electrically connected to the measuring button (12), the controller (13), the display screen (11), the laser emitter 1 (3), the laser emitter 2 (5), the self-resetting displacement sensor (6), the electric push rod (8) and the pressure sensor (9).

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