Bridge crack detection device

Abstract

The utility model discloses a bridge crack detection device which comprises a bridge body and an arc-shaped bridge opening, the bridge body is provided with a bearing vehicle, the bearing vehicle is fixedly connected with an L-shaped rod, one end of the L-shaped rod is fixedly connected with a connecting column, a mounting rod is arranged below the arc-shaped bridge opening, and the mounting rod is fixedly connected with the connecting column. The connecting column is provided with a connecting mechanism used for being connected with the mounting rod, the mounting rod is provided with an opening groove, a sliding block is slidably connected into the opening groove, a detector is mounted on the sliding block, and the mounting rod is provided with a moving mechanism used for driving the detector to move. The mounting rod is provided with a rolling mechanism used for reducing friction force generated by movement during detection. The device is reasonable in structure, can automatically adjust the distance between the device and the arc surface of the bridge opening to be detected, is good in stability, does not need manual control, and saves manpower resources.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge detection, in particular to a bridge crack detection device. Background Art

[0002] Bridges are structures built across rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. Bridges often deform, crack, or even break under the influence of external factors.

[0003] Existing detection devices for bridge cracks are basically for plane detection, but the archways of some bridges are arc-shaped. When detecting cracks on the inner wall of the arc-shaped archway, it is often necessary to manually adjust the distance between the detection equipment and the arc surface to be detected. Manual adjustment is cumbersome, wastes manpower, and has poor stability. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a bridge crack detection device which can automatically adjust the distance from the arc surface of the bridge hole to be detected, has good stability, does not require manual control, and saves human resources.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bridge crack detection device comprises a bridge body and an arc-shaped bridge hole, wherein a load-bearing vehicle is provided on the bridge body, an L-shaped rod is fixedly connected to the load-bearing vehicle, one end of the L-shaped rod is fixedly connected to a connecting column, a mounting rod is provided under the arc-shaped bridge hole, a connecting mechanism for connecting the mounting rod is provided on the connecting column, an open groove is provided on the mounting rod, a slider is slidably connected in the open groove, a detector is installed on the slider, a moving mechanism for driving the detector to move is provided on the mounting rod, and a rolling mechanism for reducing friction generated by movement during detection is provided on the mounting rod.

[0007] Preferably, the connecting mechanism includes a strip-shaped cavity arranged in the connecting column, a limiting plate is slidably connected in the strip-shaped cavity, a connecting rod is fixedly connected to the lower end surface of the limiting plate, the lower end of the connecting rod passes through the lower end surface of the strip-shaped cavity and extends to the outside of the connecting column, the lower end of the connecting rod is fixedly connected to the right end of the mounting rod, and the lower bottom surface of the limiting plate is elastically connected to the inner bottom of the strip-shaped cavity through a spring.

[0008] Preferably, the moving mechanism includes a threaded rod rotatably connected to the inner wall of the open groove, the threaded rod passes through the slider and is threadedly connected to the slider, a motor is provided at the left end of the mounting rod, and the output shaft end of the motor passes through the mounting rod and is fixedly connected to the left end of the threaded rod.

[0009] Preferably, the rolling mechanism comprises a plurality of support frames fixedly connected to the mounting rod, and rollers are arranged on the plurality of support frames.

[0010] Preferably, the height of the strip cavity is greater than the height of the arc-shaped bridge hole, and the elasticity of the spring is greater than the total gravity of the mounting rod and the motor, threaded rod, slider, detector, support frame and roller arranged on the mounting rod.

[0011] Preferably, the support frames are evenly arranged on the mounting rods, and the length of the mounting rods is greater than the width of the bridge body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By setting up a connecting mechanism and taking advantage of the elasticity of the spring, the detection device and the tested surface of the bridge to be tested always maintain a suitable distance, without the need to manually adjust the distance, which saves human resources and makes the detection more accurate.

[0014] 2. By setting up a moving mechanism and a rolling mechanism, the movement of the detection device is realized, the detection range of the detection device is enlarged, and the friction can be reduced, so that the movement of the detection device is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a bridge crack detection device proposed by the utility model;

[0016] Figure 2 A side view schematic diagram of a bridge crack detection device proposed by the utility model;

[0017] Figure 3 This is an enlarged schematic diagram of the structure at location A of a bridge crack detection device proposed by the utility model.

[0018] In the figure: 1 bridge body, 2 load-bearing vehicle, 3 L-shaped rod, 4 connecting column, 5 strip cavity, 6 limit plate, 7 connecting rod, 8 spring, 9 arc-shaped bridge hole, 10 mounting rod, 11 motor, 12 opening slot, 13 threaded rod, 14 slider, 15 detector, 16 support frame, 17 roller. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0021] Reference Figure 1-3 A bridge crack detection device comprises a bridge body 1 and an arc-shaped bridge hole 9. A load-bearing vehicle 2 is provided on the bridge body 1. An L-shaped rod 3 is fixedly connected to the load-bearing vehicle 2. One end of the L-shaped rod 3 is fixedly connected to a connecting column 4. A mounting rod 10 is provided below the arc-shaped bridge hole 9. A connecting mechanism for connecting the mounting rod 10 is provided on the connecting column 4. The connecting mechanism comprises a strip cavity 5 arranged in the connecting column 4. A limiting plate 6 is slidably connected in the strip cavity 5. A connecting rod 7 is fixedly connected to the lower end surface of the limiting plate 6. The lower end of the connecting rod 7 passes through the lower end surface of the strip cavity 5 and extends to the outside of the connecting column 4. The lower end of the connecting rod 7 is fixedly connected to the right end of the mounting rod 10. The lower bottom surface of the limiting plate 6 is elastically connected to the inner bottom of the strip cavity 5 by a spring 8. By setting the connecting mechanism, with the help of the elasticity of the spring 8, the detection device and the test surface of the bridge to be tested always maintain a suitable distance, without the need to manually adjust the spacing, saving human resources and making the detection more accurate.

[0022] An open groove 12 is provided on the mounting rod 10, and a slider 14 is slidably connected in the open groove 12. A detector 15 is installed on the slider 14. A moving mechanism for driving the detector 15 to move is provided on the mounting rod 10. The moving mechanism includes a threaded rod 13 rotatably connected to the inner wall of the open groove 12. The threaded rod 13 passes through the slider 14 and is threadedly connected to the slider 14. A motor 11 is provided at the left end of the mounting rod 10. The end of the output shaft of the motor 11 passes through the mounting rod 10 and is fixedly connected to the left end of the threaded rod 13.

[0023] The mounting rod 10 is provided with a rolling mechanism for reducing the friction generated by movement during detection. The rolling mechanism includes a plurality of support frames 16 fixedly connected to the mounting rod 10. The plurality of support frames 16 are each provided with a roller 17. The height of the strip cavity 5 is greater than the height of the arc-shaped bridge hole 9. The elasticity of the spring 8 is greater than the total gravity of the mounting rod 10 and the motor 11, threaded rod 13, slider 14, detector 15, support frame 16 and roller 17 arranged on the mounting rod 10. The support frame 16 is evenly arranged on the mounting rod 10. The length of the mounting rod 10 is greater than the width of the bridge body 1. By arranging a moving mechanism and a rolling mechanism, the movement of the detection device is realized, the detection range of the detection device is enlarged, and the friction can be reduced, so that the movement of the detection device is more flexible.

[0024] When the utility model is used, the load-bearing vehicle 2 is first started, and the load-bearing vehicle 2 drives the L-shaped rod 3 to move forward, and the L-shaped rod 3 moves forward to drive the connecting column 4 and the connecting rod 7 to move forward, and the connecting column 4 and the connecting rod 7 move forward to drive the installation rod 10 to move forward. When the installation rod 10 moves forward from the lower end of the arc-shaped bridge hole 9 to the middle part, due to the elastic force of the spring 8, the limit plate 6 will move upward, and the upward movement of the limit plate 6 will drive the connecting rod 7 to move upward, and the upward movement of the connecting rod 7 will drive the installation rod 10 and the roller 17 to move upward, so the roller 17 will always be in contact with the arc surface of the arc-shaped bridge hole 9, and the detector 15 in the installation rod 10 will always maintain a certain distance from the arc surface of the arc-shaped bridge hole 9, and no manual adjustment is required. The roller 17 can reduce the resistance generated when the detection device moves. When lateral measurement is required, the motor 11 is started, and the motor 11 drives the threaded rod 13 to rotate, and the rotation of the threaded rod 13 drives the slider 14 and the detector 15 to move horizontally to complete the detection of bridge cracks.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge crack detection device, comprising a bridge body (1) and an arc-shaped bridge hole (9), characterized in that: The bridge body (1) is provided with a load-bearing vehicle (2), the load-bearing vehicle (2) is fixedly connected with an L-shaped rod (3), one end of the L-shaped rod (3) is fixedly connected with a connecting column (4), a mounting rod (10) is provided below the arc-shaped bridge hole (9), the connecting column (4) is provided with a connecting mechanism for connecting the mounting rod (10), the connecting mechanism comprising a strip-shaped cavity (5) arranged in the connecting column (4), a limit plate (6) slidably connected in the strip-shaped cavity (5), a connecting rod (7) fixedly connected to the lower end surface of the limit plate (6), and the lower end of the connecting rod (7) passes through the strip-shaped cavity (5). The lower end surface of the connecting rod (7) extends outside the connecting column (4); the lower end of the connecting rod (7) is fixedly connected to the right end of the mounting rod (10); the lower bottom surface of the limiting plate (6) is elastically connected to the inner bottom of the strip cavity (5) via a spring (8); an opening groove (12) is provided on the mounting rod (10); a slider (14) is slidably connected in the opening groove (12); a detector (15) is mounted on the slider (14); a moving mechanism for driving the detector (15) to move is provided on the mounting rod (10); and a rolling mechanism for reducing friction generated by movement during detection is provided on the mounting rod (10).

2. A bridge crack detection device according to claim 1, characterized in that: The moving mechanism comprises a threaded rod (13) rotatably connected to the inner wall of the opening groove (12), the threaded rod (13) passing through the slider (14) and being threadedly connected to the slider (14), a motor (11) being provided at the left end of the mounting rod (10), the output shaft end of the motor (11) passing through the mounting rod (10) and being fixedly connected to the left end of the threaded rod (13).

3. A bridge crack detection device according to claim 1, characterized in that: The rolling mechanism comprises a plurality of support frames (16) fixedly connected to the mounting rod (10), and each of the plurality of support frames (16) is provided with a roller (17).

4. A bridge crack detection device according to claim 3, characterized in that: The height of the strip cavity (5) is greater than the height of the arc-shaped bridge hole (9), and the elasticity of the spring (8) is greater than the total weight of the mounting rod (10) and the motor (11), the threaded rod (13), the slider (14), the detector (15), the support frame (16), and the roller (17) arranged on the mounting rod (10).

5. A bridge crack detection device according to claim 4, characterized in that: The support frames (16) are evenly arranged on the installation rods (10), and the length of the installation rods (10) is greater than the width of the bridge body (1).

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