Bridge and tunnel crack intelligent detection device

Abstract

The invention relates to a bridge and tunnel crack intelligent detection device, and belongs to the technical field of bridge and tunnel crack detection. Comprising a base and a sweeping mechanism and a detection mechanism which are sequentially arranged from the front end to the rear end of the top face of the base, the cleaning end of the sweeping mechanism is located on the bottom face of the base and cleans the lower portion of the base, axles are embedded in the front end and the rear end of the base, and the two ends of each axle are rotationally connected with wheels; the bottom end of the detection assembly is rotationally connected to the top surface of the base, the clamping assembly is installed on the top surface of the base and located at the rear end of the base, and a clamping groove is formed in the side wall, close to the clamping assembly, of the detection assembly; the detection assembly rotates to enable the clamping groove to be clamped with the clamping assembly and detect the ground, and the detection assembly is kept vertical to detect the top surface; the problems that an existing detection device is large in transverse and vertical detection conversion difficulty and not easy to display and recognize are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge and tunnel crack detection, and in particular relates to an intelligent bridge and tunnel crack detection device. Background Art

[0002] More than 90% of the damage to concrete bridges is caused by cracks. Engineering practice and theoretical analysis show that almost all concrete components work with cracks, but some cracks are very thin, even invisible to the naked eye (<0.05mm), generally do not cause major harm to the normal use of the structure, and can be allowed to exist; but some cracks, under the influence of loads or external physical and chemical factors, continue to generate and expand new cracks, forming through cracks and deep cracks. Cracks larger than 0.20 to 0.30 mm will directly destroy the integrity of the structure, causing concrete carbonization, peeling of the protective layer, corrosion of steel bars, and forming mechanical discontinuities inside the bridge, which greatly reduces the bearing capacity of the bridge. In severe cases, even collapse accidents may occur, endangering the normal use of the bridge structure.

[0003] For example, a Chinese patent with publication number CN112176836B discloses a device for detecting cracks in asphalt pavements of roads and bridges. The device detects cracks through a camera at the bottom of the base, but the device is not easy to adjust to detect walls. The mode is single, and the distance between the detection probe and the ground is inconvenient to adjust, which affects the detection effect. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides an intelligent detection device for bridge and tunnel cracks, which solves the problems of difficulty in horizontal and vertical detection conversion and difficulty in display and identification in the existing detection devices.

[0005] The object of the present invention can be achieved by the following technical scheme: an intelligent detection device for cracks in bridges and tunnels, comprising a base and a cleaning mechanism and a detection mechanism arranged in sequence from the front end to the rear end of the top surface of the base, the cleaning end of the cleaning mechanism is located on the bottom surface of the base and cleans the bottom of the base, the front and rear ends of the base are both embedded with axles, both ends of the axles are rotatably connected to wheels, the detection mechanism comprises a detection component and a clamping component, the bottom end of the detection component is rotatably connected to the top surface of the base, the clamping component is installed on the top surface of the base and is located at the rear end of the base, and a clamping groove is provided on a side wall of the detection component close to the clamping component;

[0006] The detection component rotates to make the card slot engage with the card connection component and detect the ground, and the detection component remains vertical to detect the top surface.

[0007] As a preferred technical solution of the present invention, the detection assembly includes a connecting rod and a detection head, one end of the connecting rod is rotatably connected to a first rotating shaft, the first rotating shaft is fixedly connected to the top surface of the base, the first rotating shaft is sleeved with a first torsion spring, one end of the first torsion spring abuts against the side wall of the connecting rod, the other end of the first torsion spring abuts against the top surface of the base, and the detection head is connected to the other end of the connecting rod.

[0008] As a preferred technical solution of the present invention, a telescopic rod is provided at one end of the connecting rod connected to the detection head and connected to the detection head.

[0009] As a preferred technical solution of the present invention, the detection head includes a connecting plate fixedly connected to the top end of the telescopic rod, one side of the connecting plate is fixedly connected to a second rotating shaft, the second rotating shaft is rotatably connected to a hinge plate, the second rotating shaft is sleeved with a second torsion spring, one end of the second torsion spring abuts against the connecting plate, the other end of the second torsion spring abuts against the hinge plate, the side of the hinge plate away from the telescopic rod is fixedly connected to a spray gun and an ultrasonic probe, and the spray gun and the ultrasonic probe are both electrically connected to the controller.

[0010] As a preferred technical solution of the present invention, the clamping assembly includes a first slide groove opened in the base, a horizontally arranged first slide rod is connected in the first slide groove, a spring is fixedly connected between one end of the first slide rod and the side wall of the first slide groove, a vertically arranged second slide rod is fixedly connected to the top surface of the first slide rod, a second slide groove is opened on the top surface of the base, the second slide groove is communicated with the first slide groove, the second slide rod is slidably connected in the second slide groove, the top end of the second slide rod passes through the second slide groove and is fixedly connected with a clamping block, and the clamping block is clamped with the clamping groove.

[0011] As a preferred technical solution of the present invention, the cleaning mechanism includes a collecting box fixedly connected to the top surface of the base, the collecting box is connected to the discharge port of the vacuum pump, and the feed port of the vacuum pump is connected to the vacuum suction head.

[0012] As a preferred technical solution of the present invention, the wheel is a universal wheel.

[0013] The beneficial effects of the present invention are as follows: by setting the detection component and the clamping component to be separated and clamped, the ground detection mode and the wall detection mode can be freely switched, which is easy to use. At the same time, the location of the crack can be determined by spraying with a spray gun, which solves the problem that the existing detection device is difficult to convert horizontal and vertical detection, and is difficult to display and identify. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a structural schematic diagram of the wall mode of the detection mechanism of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the ground mode of the present invention;

[0017] Figure 3 for Figure 2 A local enlarged view of point A in FIG.

[0018] Main component symbols

[0019] In the figure: 1. base; 2. universal wheel; 3. collection box; 4. vacuum pump; 5. vacuum suction head; 6. connecting rod; 7. slot; 8. first torsion spring; 9. first slide slot; 10. spring; 11. first slide bar; 12. second slide bar; 13. block; 14. telescopic rod; 15. connecting plate; 16. second rotating shaft; 17. second torsion spring; 18. hinge plate; 19. ultrasonic probe; 20. spray gun. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-Figure 3 The present embodiment provides an intelligent detection device for cracks in bridges and tunnels, comprising a base 1 and a cleaning mechanism and a detection mechanism arranged in sequence from the front end to the rear end of the top surface of the base 1. Axles are embedded at both ends of the base 1, and wheels are rotatably connected at both ends of the axles. The cleaning end of the cleaning mechanism is located on the bottom surface of the base 1 and cleans the bottom of the base 1. The detection mechanism comprises a detection component and a clamping component. The bottom end of the detection component is rotatably connected to the top surface of the base 1, and the clamping component is installed on the top surface of the base 1 and is located at the rear end of the base 1. A clamping groove 7 is provided on one side wall of the detection component close to the clamping component. In this way, when cracks are detected, the detection area is first cleaned by the cleaning mechanism, and then the clamping groove 7 is clamped with the clamping component by rotating the detection component, so that the detection component can remain stable during detection, avoiding the detection component from shaking and causing blurred detection images, thereby causing low detection accuracy. When crack detection is performed on the top surface or side wall of the tunnel, the detection can be completed by keeping the detection component in a vertical state.

[0022] By switching the rotation state of the detection component, crack detection at different detection positions is completed, thereby solving the problem that the existing detection device cannot complete the conversion of detection at different detection positions and the display recognition is difficult.

[0023] In order to ensure the detection stability of the detection component under different detection states, in this embodiment, the detection component includes a connecting rod 6 and a detection head, one end of the connecting rod 6 is rotatably connected to a first rotating shaft, the first rotating shaft is fixedly connected to the top surface of the base, the first rotating shaft is sleeved with a first torsion spring 8, one end of the first torsion spring 8 abuts against the side wall of the connecting rod 6, and the other end of the first torsion spring 8 abuts against the top surface of the base, and the detection head is connected to the other end of the connecting rod. When the connecting rod 6 is rotated and clamped with the clamping assembly, when the connecting rod 6 remains in a vertical state, the first torsion spring 8 will abut against the side wall of the connecting rod 6 and the top surface of the base 1 at the same time, thereby ensuring that the detection head can maintain a stable state during the detection process, and when the connecting rod 6 is rotated to clamp with the clamping assembly and the detection assembly is fixed by the clamping assembly, the first torsion spring 8 at this time will also abut against the side wall of the connecting rod 6 and the top surface of the base 1 to limit the position of the connecting rod 6, and then the position of the connecting rod 6 is further limited by the clamping of the clamping assembly, thereby ensuring the stability of the detection head during the detection process.

[0024] In order to improve the detection accuracy and detection range of the detection head, in one embodiment, a telescopic rod 14 is provided at one end of the connecting rod 6 connected to the detection head, and the telescopic rod 14 is used to increase the range of the detection head during the detection process, so that the detection head can be closer to the crack, thereby obtaining a clearer detection image. The telescopic rod 14 is used to increase the detection range and the detection accuracy at the same time.

[0025] In order to enable the detection head to adapt to detection surfaces of different shapes and positions while avoiding the staff from missing the detection of crack positions, in one embodiment, the detection head includes a connecting plate 15 fixedly connected to the top of the telescopic rod 14, one side of the connecting plate 15 is fixedly connected to a second rotating shaft 16, the second rotating shaft 16 is rotatably connected to a hinge plate 18, the second rotating shaft 16 is sleeved with a second torsion spring 17, one end of the second torsion spring 17 abuts against the connecting plate 15, and the other end of the second torsion spring 17 abuts against the hinge plate 18, and the side of the hinge plate 18 away from the telescopic rod 14 is fixedly connected with a spray gun 20 and an ultrasonic probe 19, the spray gun 20 and the ultrasonic probe 19 are both electrically connected to the controller, when performing detection, the detection direction of the ultrasonic probe 19 can be changed by rotating the hinge plate 18, so as to better detect the bridge surface or the side wall and top surface of the tunnel, and at the same time, when the position of the crack is detected, the position of the crack is marked by controlling the spray gun 20 to spray, so as to facilitate subsequent crack repair work.

[0026] In order to better limit the detection component when it is converted to detect the ground, in one embodiment, the clamping component includes a first slide groove 9 opened in the base, a horizontally arranged first slide rod 11 is connected in the first slide groove 9, a spring 10 is fixedly connected between one end of the first slide rod 11 and the side wall of the first slide groove 9, and a vertically arranged second slide rod 12 is fixedly connected to the top surface of the first slide rod 11. A second slide groove is opened on the top surface of the base, and the second slide groove is communicated with the first slide groove 9. The second slide rod 12 is slidably connected in the second slide groove. The top end of the second slide rod 12 passes through the second slide groove and is fixedly connected with a clamping block 13, and the clamping block 13 is clamped with the clamping groove 7. When the connecting rod 6 rotates and abuts against the top surface of the base 1, the first slide rod 11 will be pushed to slide into the first slide groove 9 to squeeze the spring 10. When the connecting rod 6 is rotated into place, the spring 10 will release the elastic force to push the first slide rod 11 to reset, so that the clamping block 13 is clamped with the clamping groove 7 to limit the position of the connecting rod 6, thereby improving the stability of the connecting rod 6.

[0027] In order to prevent debris on the ground from affecting the detection accuracy, in one embodiment, the cleaning mechanism includes a collection box 3 fixedly connected to the top surface of the base, the collection box 3 is connected to the discharge port of the vacuum pump 4, and the feed port of the vacuum pump 4 is connected to the vacuum suction head 5. The vacuum pump 4 is started to generate suction to collect debris into the collection box 3, so as to prevent debris from affecting the detection of cracks during the detection process, thereby improving the detection accuracy of the detection component.

[0028] In order to provide better flexibility and adaptability, and to effectively improve the working efficiency and operational convenience of the equipment in various environments, in one embodiment, the wheel is a universal wheel 2, which can rotate freely in multiple directions, so that the equipment is more flexible when moving. In a small or complex space, the universal wheel 2 can easily adjust the direction, which is convenient for positioning and moving the equipment, thereby improving the working efficiency of the entire equipment.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An intelligent detection device for bridge and tunnel cracks, characterized in that: The invention comprises a base, a cleaning mechanism and a detection mechanism which are sequentially arranged from the front end to the rear end of the top surface of the base, wherein the cleaning end of the cleaning mechanism is located on the bottom surface of the base and cleans the bottom of the base, axles are embedded at both the front and rear ends of the base, and wheels are rotatably connected at both ends of the axles, the detection mechanism comprises a detection component and a clamping component, the bottom end of the detection component is rotatably connected to the top surface of the base, the clamping component is installed on the top surface of the base and is located at the rear end of the base, and a clamping groove is provided on a side wall of the detection component close to the clamping component; The detection component rotates to make the card slot engage with the card connection component and detect the ground, and the detection component remains vertical to detect the top surface.

2. The intelligent detection device for cracks in bridges and tunnels according to claim 1 is characterized by: The detection assembly includes a connecting rod and a detection head, one end of the connecting rod is rotatably connected to a first rotating shaft, the first rotating shaft is fixedly connected to the top surface of the base, the first rotating shaft is sleeved with a first torsion spring, one end of the first torsion spring abuts against the side wall of the connecting rod, the other end of the first torsion spring abuts against the top surface of the base, and the detection head is connected to the other end of the connecting rod.

3. The intelligent detection device for cracks in bridges and tunnels according to claim 2 is characterized by: One end of the connecting rod connected to the detection head is provided with a telescopic rod connected to the detection head.

4. The intelligent detection device for cracks in bridges and tunnels according to claim 3 is characterized by: The detection head includes a connecting plate fixedly connected to the top end of the telescopic rod, one side of the connecting plate is fixedly connected to a second rotating shaft, the second rotating shaft is rotatably connected to a hinge plate, the second rotating shaft is sleeved with a second torsion spring, one end of the second torsion spring abuts against the connecting plate, the other end of the second torsion spring abuts against the hinge plate, a spray gun and an ultrasonic probe are fixedly connected to a side of the hinge plate away from the telescopic rod, and the spray gun and the ultrasonic probe are both electrically connected to a controller.

5. The intelligent detection device for cracks in bridges and tunnels according to claim 1 is characterized by: The clamping assembly includes a first slide groove provided in the base, a first horizontally arranged first slide rod connected in the first slide groove, a spring fixedly connected between one end of the first slide rod and a side wall of the first slide groove, a second vertically arranged second slide rod fixedly connected to the top surface of the first slide rod, a second slide groove provided on the top surface of the base, the second slide groove being communicated with the first slide groove, the second slide rod being slidably connected in the second slide groove, the top end of the second slide rod passing through the second slide groove and fixedly connected with a clamping block, and the clamping block being clamped with the clamping groove.

6. The intelligent detection device for cracks in bridges and tunnels according to claim 1 is characterized by: The cleaning mechanism comprises a collecting box fixedly connected to the top surface of the base, the collecting box is connected to a discharge port of a vacuum pump, and the feed port of the vacuum pump is connected to a vacuum suction head.

7. The intelligent detection device for cracks in bridges and tunnels according to claim 1 is characterized by: The wheel is a universal wheel.

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