Bridge tunnel crack detection device

Abstract

The utility model discloses a bridge tunnel crack detection device, and belongs to the technical field of crack detection. Comprising a detection main base, a negative pressure suction device, a detection force application piece, an ultrasonic chuck and an ultrasonic probe, the detection main base comprises two vertical beams, sliding ways are formed in the faces, close to each other, of the two vertical beams, and the outer side faces of the two vertical beams are fixed through a dovetail groove plate; the negative-pressure suction device comprises a right-angle arm rotationally arranged on the lower portion of the outer side of the vertical beam, and a negative-pressure suction cup is fixed to the right-angle arm; the detection force application piece comprises a square detection sliding plate, sliding columns are fixed at the two ends of the top of the detection sliding plate, the detection sliding plate is arranged on the inner side of the sliding way in a sliding mode, the sliding columns movably penetrate through the top of the vertical beam, and a plurality of elastic pin columns are fixed to the top of the detection sliding plate at intervals. By means of the method, the detected crack can be centered, it is guaranteed that centring points of three times of detection are kept consistent, the detection accuracy can be guaranteed, and the detection difficulty is reduced.

Description

Technical Field

[0001] The utility model specifically relates to a bridge and tunnel crack detection device, belonging to the technical field of crack detection. Background Art

[0002] Cracks are one of the common diseases in roads, bridges and tunnels. In order to timely discover potential safety hazards in roads, bridges and tunnels, workers usually put the two sets of measuring probes on the crack detector in contact with the detection wall and detect the wall cracks. When using the existing crack detector, it is usually necessary to place the two sets of measuring probes horizontally on the detection wall. When using the crack detector, it is difficult to operate the crack detector screen with one hand and hold the two sets of measuring probes in contact with the wall with the other hand, resulting in inaccurate detection data when detecting wall cracks. For this reason, China Patent Authorization Announcement No.: CN222166061U discloses a road bridge and tunnel crack detection device, including a detector body; two measuring probes are installed on the top of the detector body. a group of detection probes; a slider is fixedly connected to the middle of the detection probe; a plurality of groups of springs are fixedly connected to the inner wall of the bottom of the slider; a top plate is fixedly connected to the top of the spring; the device can improve the horizontality of the two groups of detection probes at the inner wall of the adjusting rod when they are working, reduce the problem of angle tilt between the two groups of detection probes resulting in poor measurement effect, and at the same time reduce the problem that it is difficult for staff to operate the main screen of the detector with one hand and fix the position of the two groups of detection probes with the other hand; the span detection method in the prior art is specifically: with the crack as the midpoint, 50mm, 100mm and 150mm are marked equidistantly on both sides of the crack. After completing three tests, the detector outputs the test results. The above technical solution cannot complete three measurements with the crack centered, and the coating of coupling agent before each measurement is cumbersome. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a bridge and tunnel crack detection device, which can realize the centering of the detected cracks, ensure that the centering points of three detections remain consistent, ensure detection accuracy, and reduce detection difficulty.

[0004] The bridge and tunnel crack detection device of the utility model comprises:

[0005] The main detection seat includes two vertical beams, the two vertical beams are provided with a slideway on one side close to each other, and the outer sides of the two vertical beams are fixed by a dovetail groove plate;

[0006] A negative pressure absorber, comprising a right-angle arm rotatably arranged at the lower outer side of the vertical beam, with a negative pressure suction cup fixed on the right-angle arm;

[0007] The detection force-applying member includes a detection slide in the shape of a square. Slide posts are fixed at both ends of the top of the detection slide. The detection slide is slidably arranged on the inner side of the slideway. The slide posts movably pass through the top of the vertical beam and are screwed to the limit nut. A plurality of elastic pins are fixed at intervals on the top of the detection slide. The bottom ends of the elastic pins movably penetrate the inner side of the detection slide.

[0008] Two ultrasonic chucks are provided, each comprising a convex slider that slidably engages with the detection slide, an embedding hole being provided on the top of the slider, and a dovetail seat that slidably engages with the dovetail groove plate being integrally formed at the rear end of the slider; an elastic chuck is fixed to the front end of the slider;

[0009] An ultrasonic probe is clamped inside the elastic clamp.

[0010] During operation, the detection main seat is attracted to the detection surface by the negative pressure absorber, and then the detection main seat is rotated and swung so that the ultrasonic probe faces upward and the coupling agent is applied. Then, the detection main seat is rotated so that the ultrasonic probe faces vertically to the detection position, and then the detection slide is pushed so that the detection slide and the slide column slide along the vertical beam and the slideway so that the ultrasonic probe fits tightly to the detection position. When the detection slide continues to apply force, the elastic chuck is elastically deformed under the force, so that the ultrasonic probe can be in close contact with the detection position; after the detection is completed, the detection slide is pulled back, and then the elastic pin is pulled outward, and the ultrasonic chuck is slid along the detection slide. When the ultrasonic chuck slides to the next detection position, the ultrasonic chuck is automatically locked by the elastic pin; then, the detection main seat is rotated and swung so that the ultrasonic probe faces upward, and the coupling agent is applied again, and then the crack detection process is re-entered.

[0011] Furthermore, the elastic pin includes an outer sleeve, a pin is slidably provided on the inner side of the outer sleeve, a ring seat is fixed on the front end of the pin, the pin is movably embedded in the outer sleeve and fixed with a limiting bolt; a first spring body is provided between the top inner side of the outer sleeve and the ring seat; the outer sleeve is fixed to the top of the detection slide; the pin is movably inserted into the inner side of the detection slide and movably engaged with the embedding hole; the ring seat is fitted with the top of the detection slide; when the position of the ultrasonic probe needs to be adjusted, the limit bolt is pulled up to drive the pin to be pulled up synchronously, so that the first spring body is compressed. At this time, the pin is separated from the embedding hole, and then the slider can be slid. When the slider approaches the next pin, the next pin is pulled up and the pin is fitted to the top surface of the slider. Then, the slider continues to slide, so that the pin is automatically embedded in the inner side of the embedding hole of the slider; the ultrasonic probe enters the next detection position.

[0012] Furthermore, the elastic chuck includes a chuck slot seat, a probe clamping seat is provided at the bottom of the chuck slot seat; a concave plate is slidably provided on the upper inner side of the chuck slot seat, a guide column is slidably provided on the top of the chuck slot seat, the guide column is screwed to the top surface of the concave plate, and a second spring body is provided between the top inner side of the chuck slot seat and the top surface of the concave plate; the lower part of the ultrasonic probe is clamped between the probe clamping seat, and the outer side of the ultrasonic probe is provided with a clamping groove or a protrusion that is clamped with the probe; the detection cable of the ultrasonic probe passes through the concave plate; before detection First, pull up the guide column, and drive the concave plate upward along the chuck slot seat through the guide column, so that the concave plate and the probe holder form a probe engaging gap. Then, embed the ultrasonic probe into the engaging gap, and embed the ultrasonic probe from the probe holder so that the slot or protrusion of the ultrasonic probe is engaged with the probe holder. Finally, the concave plate and the ultrasonic probe are elastically pressed together by the second spring body. When the ultrasonic probe is pressed against the detection surface, the ultrasonic probe applies force to the second spring body, causing the second spring body to be compressed, thereby enabling the ultrasonic probe to fit tightly against the detection surface.

[0013] Furthermore, a first handshake is fixed to the outside of both ends of the dovetail groove plate; a second handshake is fixed on both sides of the top of the detection slide. Through the first handshake, the entire detection device can be pressed onto the detection surface, and the negative pressure suction cup can be sucked into engagement with the detection surface. When crack detection is required, the second handshake is used to push the detection slide toward the detection surface, so that the ultrasonic probe is fitted into the detection surface.

[0014] Furthermore, the negative pressure absorber also includes an auxiliary absorber, which includes an inclined arm fixed to the lower outer side of the vertical beam, a support leg fixed to the other end of the inclined arm, and a mechanical suction cup fixed on the support leg; the auxiliary absorber can make the detection main seat and the detection surface absorb together. During operation, the negative pressure suction cup is first stably absorbed by the detection surface, and then the mechanical suction cup is pressed to the detection surface through the detection main seat, the inclined arm and the support leg, and the mechanical suction cup is stably absorbed by the detection surface by pressing the mechanical suction cup.

[0015] Furthermore, the negative pressure suction cup is connected to a negative pressure suction unit through a pipe valve. The negative pressure suction unit provides a negative pressure source and draws a vacuum into the negative pressure suction cup through the pipe valve, so that the negative pressure suction cup is firmly attracted to the detection surface.

[0016] Furthermore, a positioning seat plate is fixed in the middle of the top surface of the detection slide, and a laser indicator is fixed on the positioning seat plate; the positioning seat plate can load the laser indicator onto the detection slide, and the center point of the detection slide can be accurately aligned with the center point of the crack through the laser indicator, and the detection device and the crack alignment slot seat are simple and convenient.

[0017] Compared with the existing technology, the bridge and tunnel crack detection device of the utility model adopts laser to align with the crack, which can realize the rapid and accurate centering of the detection device to the detected crack. After the centering is completed, the three detections of the two ultrasonic probes are all in the same coordinate system, and the centering points of the three detections are kept consistent, which can ensure that the data obtained three times will not deviate and the detection accuracy is guaranteed. Before each detection, the application of coupling agent is simple and convenient, which reduces the difficulty of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the bridge and tunnel crack detection device of Example 1 of the present utility model.

[0019] Figure 2 This is a schematic diagram of the installation structure of the dovetail groove plate and ultrasonic chuck of the utility model.

[0020] Figure 3 This is a schematic diagram of the elastic pin structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the installation structure of the bridge and tunnel crack detection device and the negative pressure absorber of the present utility model.

[0022] Figure 5 This is a schematic diagram of the overall structure of the ultrasonic chuck of the present utility model.

[0023] Figure 6 This is a schematic diagram of the installation structure of the ultrasonic chuck and ultrasonic probe of the utility model.

[0024] Figure numerals: 1. vertical beam, 2. dovetail groove plate, 3. right-angle arm, 4. negative pressure suction cup, 5. detection slide plate, 6. sliding column, 7. elastic pin, 8. slider, 9. embedded hole, 10. dovetail seat, 11. elastic chuck, 12. ultrasonic probe, 13. outer sleeve, 14. pin, 15. ring seat, 16. limit bolt, 17. first spring body, 18. chuck groove seat, 19. probe holder, 20. concave plate, 21. guide column, 22. protrusion, 23. first handshake, 24. second handshake, 25. inclined arm, 26. support foot, 27. mechanical suction cup, 28. positioning seat plate, 29. laser indicator. DETAILED DESCRIPTION

[0025] Example:

[0026] like Figures 1 to 6 The bridge and tunnel crack detection device shown includes:

[0027] The main seat for detecting the main seat includes two vertical beams 1. A slideway is provided on one side of the two vertical beams 1 close to each other. The outer sides of the two vertical beams 1 are fixed by a dovetail groove plate 2.

[0028] A negative pressure absorber, comprising a right-angle arm 3 rotatably arranged at the lower outer side of the vertical beam 1, with a negative pressure suction cup 4 fixed on the right-angle arm 3;

[0029] The detection force-applying member includes a U-shaped detection slide 5, with slide posts 6 fixed at both ends of the top of the detection slide 5. The detection slide 5 is slidably arranged on the inner side of the slideway, and the slide posts 6 move through the top of the vertical beam 1 and are screwed to the limit nut; a plurality of elastic pins 7 are fixed at intervals on the top of the detection slide 5, and the bottom ends of the elastic pins 7 moveably penetrate the inner side of the detection slide 5;

[0030] Ultrasonic chuck, two of which are provided, each comprising a convex slider 8 that slides with the detection slide 5, an embedding hole 9 being provided on the top of the slider 8, and a dovetail seat 10 that slides and engages with the dovetail groove plate 2 in an integrated manner at the rear end of the slider 8; an elastic chuck 11 is fixed to the front end of the slider 8;

[0031] The ultrasonic probe 12 is clamped inside the elastic clamp 11 .

[0032] During operation, the detection main seat is attracted to the detection surface by the negative pressure absorber, and then the detection main seat is rotated and swung so that the ultrasonic probe 12 faces upward and the coupling agent is applied. Then, the detection main seat is rotated so that the ultrasonic probe 12 faces vertically to the detection position, and then the detection slide 5 is pushed so that the detection slide 5 and the slide column 6 slide along the vertical beam 1 and the slideway so that the ultrasonic probe 12 fits tightly to the detection position. When the detection slide 5 continues to apply force, the elastic clamp 11 is elastically deformed under the force, so that the ultrasonic probe 12 can be in close contact with the detection position; after the detection is completed, the detection slide 5 is pulled back, and then the elastic pin 7 is pulled outward, and the ultrasonic clamp is slid along the detection slide 5. When the ultrasonic clamp slides to the next detection position, the ultrasonic clamp is automatically locked by the elastic pin 7; then, the detection main seat is rotated and swung so that the ultrasonic probe 12 faces upward, and the coupling agent is applied again, and then the crack detection process is re-entered.

[0033] The elastic pin 7 includes an outer sleeve 13, a pin 14 is slidably provided inside the outer sleeve 13, a ring seat 15 is fixed to the front end of the pin 14, the pin 14 is movably embedded in the outer sleeve 13, and a limiting bolt 16 is fixed; a first spring body 17 is provided between the top of the inner side of the outer sleeve 13 and the ring seat 15 of the pin 14; the outer sleeve 13 is fixed to the top of the detection slide 5; the pin 14 is movably inserted into the inner side of the detection slide 5 and movably engaged with the embedding hole 9; the ring seat 15 is fitted on the detection slide The top of the slider 5; when the position of the ultrasonic probe 12 needs to be adjusted, the limit bolt 16 is pulled up to drive the pin 14 to be pulled up synchronously, so that the first spring body 17 is compressed. At this time, the pin 14 is separated from the embedding hole 9, and then the slider 8 can be slid. When the slider 8 approaches the next pin 14, the next pin 14 is pulled up, and the pin 14 is fitted to the top surface of the slider 8. Then, the slider 8 is continued to slide so that the pin 14 is automatically embedded in the inner side of the embedding hole 9 of the slider 8; the ultrasonic probe 12 enters the next detection position.

[0034] The elastic chuck 11 includes a chuck slot seat 18, a probe clamping seat 19 is provided at the bottom of the chuck slot seat 18; a concave plate 20 is slidably provided on the upper inner side of the chuck slot seat 18, a guide post 21 is slidably provided on the top of the chuck slot seat 18, the guide post 21 is screwed to the top surface of the concave plate 20, and a second spring body is provided between the top inner side of the chuck slot seat 18 and the top surface of the concave plate 20; the lower part of the ultrasonic probe 12 is clamped between the probe clamping seat 19, and the outer side of the ultrasonic probe 12 is provided with a clamping groove or protrusion 22 that is clamped with the probe; the detection cable of the ultrasonic probe 12 passes through the concave plate 20; before detection First, pull up the guide column 21, and drive the concave plate 20 upward along the chuck slot 18 through the guide column 21, so that the concave plate 20 and the probe clamping seat 19 form a probe clamping gap. Then, insert the ultrasonic probe 12 into the clamping gap, and insert the ultrasonic probe 12 from the probe clamping seat 19, so that the clamping groove or protrusion 22 of the ultrasonic probe 12 is clamped to the probe clamping seat 19. Finally, the concave plate 20 and the ultrasonic probe 12 are elastically pressed together by the second spring body. When the ultrasonic probe 12 is pressed against the detection surface, the ultrasonic probe 12 applies force to the second spring body, causing the second spring body to be compressed, so that the ultrasonic probe 12 can be tightly fitted to the detection surface.

[0035] A first handshake 23 is fixed to the outside of both ends of the dovetail groove plate 2; a second handshake 24 is fixed to both sides of the top of the detection slide 5. The first handshake 23 can press the entire detection device onto the detection surface, and the negative pressure suction cup 4 can be sucked into engagement with the detection surface. When crack detection is required, the second handshake 24 is used to push the detection slide 5 toward the detection surface, so that the ultrasonic probe 12 is fitted into the detection surface.

[0036] The negative pressure closer also includes an auxiliary closer, which includes an inclined arm 25 fixed to the lower outer side of the vertical beam 1, and a support leg 26 fixed to the other end of the inclined arm 25, and a mechanical suction cup 27 fixed on the support leg 26; the auxiliary closer can make the detection main seat and the detection surface attracted, and during operation, the negative pressure suction cup 4 is first stably attracted to the detection surface, and then the mechanical suction cup 27 is pressed to the detection surface through the detection main seat, the inclined arm 25 and the support leg 26, and the mechanical suction cup 27 is stably attracted to the detection surface by pressing the mechanical suction cup 27.

[0037] The negative pressure suction cup 4 is connected to the negative pressure suction unit through a pipe valve. The negative pressure suction unit provides a negative pressure source and draws a vacuum into the negative pressure suction cup 4 through the pipe valve, so that the negative pressure suction cup 4 is firmly attracted to the detection surface.

[0038] A positioning seat plate 28 is fixed to the middle of the top surface of the detection slide 5, and a laser indicator 29 is fixed on the positioning seat plate 28; the positioning seat plate 28 can load the laser indicator 29 onto the detection slide 5, and the center point of the detection slide 5 can be accurately aligned with the center point of the crack through the laser indicator 29, and the detection device and the crack alignment slot seat are simple and convenient.

[0039] The above embodiments are only preferred implementations of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A bridge and tunnel crack detection device, characterized by: include: The main detection seat includes two vertical beams, the two vertical beams are provided with a slideway on one side close to each other, and the outer sides of the two vertical beams are fixed by a dovetail groove plate; A negative pressure absorber, comprising a right-angle arm rotatably arranged at the lower outer side of the vertical beam, with a negative pressure suction cup fixed on the right-angle arm; The detection force-applying member includes a detection slide in the shape of a square. Slide posts are fixed at both ends of the top of the detection slide. The detection slide is slidably arranged on the inner side of the slideway. The slide posts movably pass through the top of the vertical beam and are screwed to the limit nut. A plurality of elastic pins are fixed at intervals on the top of the detection slide. The bottom ends of the elastic pins movably penetrate the inner side of the detection slide. Two ultrasonic chucks are provided, each comprising a convex slider that slidably engages with the detection slide, an embedding hole being provided on the top of the slider, and a dovetail seat that slidably engages with the dovetail groove plate being integrally formed at the rear end of the slider; an elastic chuck is fixed to the front end of the slider; An ultrasonic probe is clamped inside the elastic clamp.

2. The bridge and tunnel crack detection device according to claim 1, characterized in that: The elastic pin includes an outer sleeve, a pin is slidably provided on the inner side of the outer sleeve, a ring seat is fixed to the front end of the pin, the pin is movably embedded in the outer sleeve and fixed with a limiting bolt; a first spring body is provided between the top of the inner side of the outer sleeve and the ring seat; the outer sleeve is fixed to the top of the detection slide; the pin is movably inserted into the inner side of the detection slide and movably engaged with the embedding hole; the ring seat is fitted to the top of the detection slide.

3. The bridge and tunnel crack detection device according to claim 1, characterized in that: The elastic chuck includes a chuck slot seat, a probe clamping seat is provided at the bottom of the chuck slot seat; a concave plate is slidably provided on the upper inner side of the chuck slot seat, a guide column is slidably provided on the top of the chuck slot seat, the guide column is screwed to the top surface of the concave plate, and a second spring body is provided between the top inner side of the chuck slot seat and the top surface of the concave plate; the lower part of the ultrasonic probe is engaged between the probe clamping seat, and the outer side of the ultrasonic probe is provided with a clamping groove or a protrusion that is engaged with the probe; the detection cable of the ultrasonic probe passes through the concave plate.

4. The bridge and tunnel crack detection device according to claim 1, characterized in that: The first handshakes are fixed on the outside of both ends of the dovetail groove plate; and the second handshakes are fixed on both sides of the top of the detection slide.

5. The bridge and tunnel crack detection device according to claim 1, characterized in that: The negative pressure closer also includes an auxiliary closer, which includes an oblique arm fixed to the lower outer side of the vertical beam, a support foot fixed to the other end of the oblique arm, and a mechanical suction cup fixed to the support foot.

6. The bridge and tunnel crack detection device according to claim 1, characterized in that: The negative pressure suction cup is connected to the negative pressure suction unit through a pipe valve.

7. The bridge and tunnel crack detection device according to claim 1, characterized in that: A positioning seat plate is fixed on the middle part of the top surface of the detection slide plate, and a laser indicator is fixed on the positioning seat plate.

Images