A crack detection device for bridge pavement

Abstract

The utility model discloses a kind of crack detection devices for bridge pavement, including measuring box, drive wheel is installed at measuring box top corner, drive wheel is installed with drive motor, detection hole is provided in the bottom of measuring box, two lifting rails are fixedly installed in measuring box, translation rod is slidably installed in lifting rail, two translation rods are rotatably connected with same connecting block, sliding block is slidably installed in lifting rail, translation rod is rotatably installed in sliding block, first drive is fixedly installed in sliding block, second drive is fixedly installed in lifting rail, further include detection end, detection end includes two ultrasonic ends and camera end, ultrasonic end is slidably installed in sliding block and is connected with translation rod screw thread, camera end is installed in the lower end of connecting block.The utility model makes surveyor complete the measurement work to crack by controlling drive wheel, first drive and second drive, reduce labor intensity, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of crack detection, and relates to a crack detection device for bridge paving. Background Technology

[0002] Bridge paving is usually made of asphalt or concrete. After long-term use, due to the heavy pressure of vehicles and the thermal expansion and contraction of the materials themselves, cracks may appear on the surface of the bridge, requiring repair or repaving.

[0003] After cracks appear on the surface of a bridge, they need to be detected. Currently, the width of the crack is measured by using a camera in conjunction with image recognition, and the depth is measured by an ultrasonic detector. However, the measurement requires the surveyor to squat down and press the camera or detector head against the road surface, which is quite troublesome. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a crack detection device for bridge pavement, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A crack detection device for bridge pavement includes:

[0007] A measuring box, wherein a drive wheel is installed at the top corner of the measuring box, and a drive motor is installed on the drive wheel;

[0008] A probe hole is provided at the bottom of the measuring box;

[0009] Lifting rails are fixedly installed inside the measuring box, with two lifting rails located on both sides of the detection hole;

[0010] Two translation rods are slidably mounted on the lifting rail, and the translation rods are screw rods;

[0011] The connecting block is provided, and the ends of the two translation rods located above the detection holes are rotatably connected to the connecting block.

[0012] Two sliding blocks are slidably mounted on the lifting rail, and the translation rod is rotatably mounted on the sliding blocks;

[0013] The first drive, two of which are fixedly installed on the sliding block, and the output end of the first drive is fixedly connected to the translation rod;

[0014] The second drive is fixedly installed on the lifting rail, and the output end of the second drive is connected to the sliding block;

[0015] The detection end includes two ultrasonic ends and a camera end. The ultrasonic ends are slidably mounted on the sliding block and threadedly connected to the translation rod, and the camera end is mounted on the lower end of the connecting block.

[0016] Optionally, the second drive includes two lifting screws rotatably mounted on the lifting rail, each lifting screw having a bevel gear set at its upper end, the two bevel gear sets being connected to the same connecting rod, and the connecting rod being fixedly connected to a drive motor.

[0017] Optionally, a pre-tensioning spring is fixedly connected to the upper end of both the ultrasonic end and the camera end, and the upper end of the pre-tensioning spring is installed on the translation rod and the connecting block.

[0018] Optionally, a coating component is fixedly installed at the bottom of the measuring box, the coating component comprising:

[0019] A collection chamber, which is fixedly installed at the bottom of the measuring box;

[0020] A silicone scraper is fixedly installed at the upper end of the collection chamber;

[0021] A coating tube, the output end of which is fixedly installed in the collection chamber;

[0022] An injection tube is fixedly installed at the input end of the coating tube, and the injection tube is filled with coupling agent.

[0023] Optionally, the injection tube is connected to an electric plunger.

[0024] Optionally, the injection tube is fixedly connected to an injection tube, the upper end of the injection tube is located outside the measuring box, and a sealing cap is provided at the upper end of the injection tube.

[0025] Optionally, the drive wheel is a melamine wheel.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The surveyor completes the measurement of cracks by controlling the drive wheel, the first drive, and the second drive, which reduces labor intensity and facilitates improved work efficiency;

[0028] 2. By setting a pre-tensioning spring, on the one hand, it provides downward pressure to the ultrasonic end; on the other hand, by adjusting the pre-tensioning spring, multiple ends of the probe end can be made to fit against the bridge surface, which facilitates the improvement of measurement accuracy.

[0029] 3. By setting up coating components, automatic coating of coupling agent is facilitated, which in turn facilitates continuous measurement, further reducing labor intensity and improving work efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0031] Figure 2 This is a schematic diagram of the internal overall structure of an embodiment of the present utility model;

[0032] Figure 3 yes Figure 2 Enlarged diagram of part A

[0033] Reference numerals: 1. Measuring box; 11. Drive wheel; 12. Probe hole; 21. Lifting rail; 22. Translation rod; 23. Connecting block; 24. Sliding block; 31. First drive; 32. Second drive; 321. Lifting screw; 322. Bevel gear set; 323. Connecting rod; 4. Probe end; 41. Ultrasonic end; 42. Camera end; 43. Preload spring; 5. Coating component; 51. Collection chamber; 52. Silicone scraper; 53. Coating tube; 54. Injection tube; 55. Electric actuator; 56. Injection tube. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1 and Figure 2 This invention discloses a crack detection device for bridge pavement, comprising a measuring box 1, a drive wheel 11 mounted at the top corner of the measuring box 1, a drive motor mounted on the drive wheel 11, a detection hole 12 at the bottom of the measuring box 1, and two lifting rails 21 fixedly installed inside the measuring box 1, located on both sides of the detection hole 12. Each lifting rail 21 is slidably mounted with a translation rod 22, which is a screw rod. The two translation rods 22 are rotatably connected to the same connecting block 23 at their adjacent ends. Both lifting rails 21... A sliding block 24 is slidably mounted, and a translation rod 22 is rotatably mounted on the sliding block 24. A first drive 31 is fixedly mounted on the sliding block 24, and the output end of the first drive 31 is fixedly connected to the translation rod 22. A second drive 32 is fixedly mounted on the lifting rail 21, and the output end of the second drive 32 is connected to the sliding block 24. The system also includes a detection end 4, which includes two ultrasonic ends 41 and a camera end 42. The ultrasonic ends 41 are slidably mounted on the sliding block 24 and threadedly connected to the translation rod 22. The camera end 42 is mounted on the lower end of the connecting block 23.

[0036] Specifically, a probe end 4 is installed inside the measuring box 1, along with a liftable translation rod 22. The probe end 4 is raised and lowered by the action of the second drive 32. The translation rod 22 is threadedly connected to the ultrasonic end 41, which is translated by the action of the first drive 31. When measuring a crack, the probe end 4 is aligned with the measuring position by controlling the second drive 32 and the drive wheel 11. This identifies the crack width and locates the crack position. The first drive 31 is then adjusted to change the position of the ultrasonic end 41. The second drive 32 lowers the ultrasonic end 41 through the probe hole 12 to the ground for measurement. By adjusting the drive wheel 11, the measuring box 1 can be rotated, allowing measurement to be performed with the ultrasonic end 41 on the same side of the crack or on both sides.

[0037] In this way, the surveyor can complete the measurement of cracks by controlling the drive wheel 11, the first drive 31 and the second drive 32, which reduces labor intensity and facilitates improved work efficiency.

[0038] In some feasible configurations, the measuring box 1 is a rectangular box shape, and the drive wheel 11 is a MEM wheel for easy movement control. The lifting rail 21 includes two opposing C-shaped rails, and the sliding block 24 is a rectangular block that is movably mounted between the two C-shaped rails. The first drive 31 is a drive motor bolted to the sliding block 24. The translation rod 22 rotatably passes through the sliding block 24. To facilitate the installation of the probe end 4, each translation rod 22 is threaded with a sliding block. The two sliding blocks 24 are fixedly connected by a rectangular rod, and the upper end of the sliding block is slidably suspended from the rectangular rod by a C-shaped component. The ultrasonic end 41 is fixedly mounted to the sliding block. The connecting block 23 is a rectangular block that is fixedly connected to the rectangular rod.

[0039] The measuring box 1 also houses the control system module and battery module of the probe 4. For ease of observation and control, the display and controller of the probe 4 are fixedly mounted on the top of the measuring box 1. A push handle is provided on the top of the measuring box 1.

[0040] As a specific embodiment of the crack detection device for bridge pavement provided in the application, the second drive 32 includes two lifting screws 321 that are rotatably mounted on the lifting rail 21. The upper end of the lifting screw 321 is provided with a bevel gear set 322. The two bevel gear sets 322 are connected to the same connecting rod 323, and the connecting rod 323 is fixedly connected to a drive motor.

[0041] Overall, by setting up the bevel gear set 322 and the connecting rod 323, it is easy to make the two sliding blocks 24 rise and fall synchronously.

[0042] As another specific embodiment of the crack detection device for bridge pavement provided in the application, please refer to Figure 3Both the ultrasonic end 41 and the camera end 42 are fixedly connected to a pre-tensioning spring 43, and the upper end of the pre-tensioning spring 43 is installed on the translation rod 22 and the connecting block 23.

[0043] In the context of specific applications, although the bridge deck is generally flat in its relatively small size, it may have some protrusions or depressions, which may make it difficult for the probe end 4 to fit against the bridge deck. By setting a pre-tensioning spring 43, on the one hand, it provides downward pressure to the ultrasonic end 41, and on the other hand, it is easy to adjust the pre-tensioning spring 43 so that all ends of the probe end 4 can fit against the bridge deck, thereby improving the measurement accuracy.

[0044] In some feasible embodiments, a tubular connector is fixedly connected to the bottom of the sliding block, a preload spring 43 is installed inside the tubular connector, and the probe end 4 is slidably installed inside the tubular connector.

[0045] As a specific embodiment of the crack detection device for bridge pavement provided in the application, a coating component 5 is fixedly installed at the bottom of the measuring box 1. The coating component 5 includes a collection chamber 51, a silicone scraper 52, a coating tube 53, and an injection tube 54. The collection chamber 51 is fixedly installed at the bottom of the measuring box 1, the silicone scraper 52 is fixedly installed at the upper end of the collection chamber 51, the output end of the coating tube 53 is fixedly installed at the collection chamber 51, and the injection tube 54 is fixedly installed at the input end of the coating tube 53. The injection tube 54 is filled with coupling agent.

[0046] To improve measurement accuracy, a coupling agent is applied to the surface of the ultrasonic end 41 during ultrasonic measurement, depending on the specific application scenario. The coating component 5 facilitates automatic application of the coupling agent and enables continuous measurement.

[0047] In some feasible configurations, the collection chamber 51 is a rectangular box shape, and a silicone scraper 52 is installed obliquely inside the collection chamber 51. After measurement, the ultrasonic end 41 slides through the silicone scraper 52, which scrapes off the coupling agent from the ultrasonic end 41. To ensure thorough scraping, multiple silicone scrapers 52 are provided. The bottom of the collection chamber 51 extends through the measurement box 1, and the scraped coupling agent falls to the ground. The injection tube 54 is syringe-shaped and bolted to the bottom of the measurement box 1. The coating tube 53 is located inside the collection chamber 51. After scraping, the ultrasonic end 41 enters above the coating tube 53, pushing the injection tube 54 to apply the coupling agent. To facilitate automated coating, the injection tube 54 is connected to an electric push rod 55.

[0048] Furthermore, the injection tube 54 is fixedly connected to the injection tube 56, the upper end of the injection tube 56 is located outside the measuring box 1, and a sealing cap is provided at the upper end of the injection tube 56.

[0049] It should be understood that the injection tube 56 facilitates the replenishment of coupling agent.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crack detection device for bridge pavement, characterized in that, include: A measuring box, wherein a drive wheel is installed at the top corner of the measuring box, and a drive motor is installed on the drive wheel; A probe hole is provided at the bottom of the measuring box; Lifting rails are fixedly installed inside the measuring box, with two lifting rails located on both sides of the detection hole; Two translation rods are slidably mounted on the lifting rail, and the translation rods are screw rods; The connecting block is provided, and the ends of the two translation rods located above the detection holes are rotatably connected to the connecting block. Two sliding blocks are slidably mounted on the lifting rail, and the translation rod is rotatably mounted on the sliding blocks; The first drive, two of which are fixedly installed on the sliding block, and the output end of the first drive is fixedly connected to the translation rod; The second drive is fixedly installed on the lifting rail, and the output end of the second drive is connected to the sliding block; The detection end includes two ultrasonic ends and a camera end. The ultrasonic ends are slidably mounted on the sliding block and threadedly connected to the translation rod. The camera end is mounted on the lower end of the connecting block.

2. The crack detection device for bridge pavement according to claim 1, characterized in that: The second drive includes two lifting screws that are rotatably mounted on the lifting rail. The upper end of each lifting screw is provided with a bevel gear set. The two bevel gear sets are connected to the same connecting rod, and the connecting rod is fixedly connected to a drive motor.

3. The crack detection device for bridge pavement according to claim 1, characterized in that: Both the ultrasonic end and the camera end are fixedly connected to a pre-tensioning spring, and the upper end of the pre-tensioning spring is installed on the translation rod and the connecting block.

4. A crack detection device for bridge pavement according to claim 1, characterized in that: A coating component is fixedly installed at the bottom of the measuring box, and the coating component includes: A collection chamber, which is fixedly installed at the bottom of the measuring box; A silicone scraper is fixedly installed at the upper end of the collection chamber; A coating tube, the output end of which is fixedly installed in the collection chamber; An injection tube is fixedly installed at the input end of the coating tube, and the injection tube is filled with coupling agent.

5. A crack detection device for bridge pavement according to claim 4, characterized in that: The injection tube is connected to an electric plunger.

6. A crack detection device for bridge pavement according to claim 5, characterized in that: The injection tube is fixedly connected to the injection tube, the upper end of the injection tube is located outside the measuring box, and a sealing cap is provided at the upper end of the injection tube.

7. A crack detection device for bridge pavement according to claim 1, characterized in that: The drive wheel is a MEM wheel.

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