Bridge crack detection device and detection method thereof

Abstract

The invention relates to the technical field of bridge crack detection, in particular to a bridge crack detection device and a detection method thereof. The invention provides an easy-to-use bridge crack detection device for bridge high-position crack detection and a detection method thereof. The easy-to-use bridge crack detection device comprises a fixed support frame, a mounting support plate, a wire spool, a middle shaft, a steel wire rope, a processing control device, a transmission clamping wheel and the like, mounting supporting plates are symmetrically and fixedly connected to the fixed supporting frames, a middle shaft is rotationally connected to the mounting supporting plates, wire spools are symmetrically and fixedly connected to the middle shaft, the number of the fixed supporting frames is two, and a steel wire rope is jointly wound around the wire spools arranged on the two fixed supporting frames. According to the bridge crack detection device, the camera shooting and scanning module is guided to move along the fixed track of the steel wire rope through the steel wire rope, the height of the camera shooting and scanning module is adjusted through the arranged lifting assembly, the camera shooting and scanning module is driven to move under the action of the driving assembly, and therefore bridge crack detection under the complex condition is completed through simple operation.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge crack detection, and particularly relates to a bridge crack detection device and a detection method thereof. Background Art

[0002] A bridge refers to a building constructed to span natural or artificial obstacles on a road. It is erected over rivers, lakes, and seas to enable vehicles, pedestrians, etc. to pass smoothly. Bridge crack detection is one of the important tasks for protecting and maintaining the safety of bridge structures. The main detection methods include visual methods, laser scanning, and ultrasonic wave for crack detection.

[0003] The visual method is to detect the length of bridge cracks by taking pictures. Due to the different heights of bridges, there is no support at the bottom of the bridge during the detection process. When some areas to be detected are at high places or difficult to reach, it is necessary to rely on a support frame similar to a robotic arm to descend to the bottom of the bridge, making crack detection difficult. Summary of the Invention

[0004] In order to overcome the shortcoming that the detection process is difficult due to the areas to be detected during bridge detection being at high places or difficult to reach, a bridge crack detection device and a detection method thereof that are easy to use for detecting cracks at high places of bridges are provided.

[0005] The technical solution is as follows: A bridge crack detection device includes a fixed support frame, a mounting support plate, a wire winding disc, a central axis, a steel wire rope, a processing and control device, a driving and clamping wheel, a camera scanning module, a driving component, and a lifting component. The mounting support plates are symmetrically and fixedly connected to the fixed support frame. The central axis is rotatably connected to the mounting support plates. The wire winding discs are symmetrically and fixedly connected to the central axis. There are two fixed support frames, and the steel wire rope is commonly wound around the wire winding discs provided on the two fixed support frames. The driving and clamping wheel is arranged at the bottom of the processing and control device and rolls and clamps on the steel wire rope. The camera scanning module is arranged on the processing and control device, and the camera scanning module is electrically connected to the processing and control device. A driving component is installed on the processing and control device to drive the driving and clamping wheel to rotate. A lifting component for driving the fixed support frame to rise and fall is arranged on the fixed support frame.

[0006] Optionally, the driving component includes a first driving motor and a pulley group. The first driving motor is installed at the bottom of the processing and control device, and the first driving motor and the driving and clamping wheel are driven by the pulley group.

[0007] Optionally, the lifting component includes a counterweight and stabilizing box, a hydraulic push rod, a fixed connecting plate, and moving rollers. The hydraulic push rod is installed in the counterweight and stabilizing box. The movable rod of the hydraulic push rod is fixedly connected to the fixed connecting plate, and the fixed connecting plate is fixedly connected to the fixed support frame. The fixed support frame is sleeved outside the counterweight and stabilizing box, and the moving rollers are installed at the bottom of the counterweight and stabilizing box.

[0008] Optionally, a limiting card is also included, and a limiting card is arranged on the counterweight stabilization box for limiting the rotation of the central axis; the limiting card includes a guide slide rod and an L-shaped card plate, and the guide slide rod is slidably passed through the counterweight stabilization box, a spring is provided between the guide slide rod and the counterweight stabilization box, the end of the guide slide rod is fixedly connected to the L-shaped card plate, and a transverse groove is opened at the end of the central axis, and the L-shaped card plate fits into the transverse groove.

[0009] Optionally, a connecting component is also included, and the connecting component is arranged on the fixed support frame; the connecting component includes a fixed contact plate, a zigzag connecting plate, an L-shaped plate, an extension plate and a limit column, the fixed contact plate is fixedly connected to the fixed support frame, the fixed contact plates on the two fixed support frames are at the same height and contact and cooperate with each other, the zigzag connecting plate is fixedly connected to the fixed contact plate, the L-shaped plate is fixedly connected to the bottom of the L-shaped card plate, the extension plate is fixedly connected to the L-shaped plate, the limit column is fixedly connected to the extension plate, the zigzag connecting plate is provided with a through hole, and the limit columns provided on the extension plates on both sides are interlaced and buckled in the through holes on the zigzag connecting plate.

[0010] Optionally, a separation component is also included, and the separation component is arranged on the fixed support frame; the separation component includes a sliding top plate and a limiting ejection plate, the sliding top plate is slidably connected to the fixed support frame, a spring is arranged between the sliding top plate and the fixed support frame, the sliding top plates arranged on the two fixed support frames are at the same height, the limiting ejection plate is fixedly connected to the sliding top plate, and the limiting ejection plate is in contact with the L-shaped plate.

[0011] Optionally, it also includes a retractable assembly, which is arranged on the fixed support frame; the retractable assembly includes a second drive motor, a worm wheel and a worm, the second drive motor is installed on the fixed support frame, the worm is fixedly connected to the output shaft of the second drive motor, the worm wheel is fixedly connected to the middle shaft, and the worm wheel and the worm are meshing.

[0012] A detection method of a bridge crack detection device comprises the following steps: S1. Pull the L-shaped pallet to disengage it from the horizontal groove on the central axis, and then drive the central axis to rotate through the retractable assembly to release the wire rope. Pulling the L-shaped pallet will separate the connection assembly, and then the separation assembly will push the two fixed support frames apart while the retractable assembly releases the wire rope; S2. Adjust the position of the fixed support frame so that the fixed support frame is below the bridge area to be inspected. The steel wire rope can be stopped after being extended to the maximum width of the inspection area. The moving roller is braked, and the predetermined parameters of the camera scanning module are adjusted and initialized. S3. Use the lifting assembly to move the fixed support frame and the wire rope wound on the winding drum and the camera scanning module to the specified position, and use the driving assembly on the processing control device to drive the camera scanning module to move along the fixed trajectory of the wire rope to complete the scanning detection.

[0013] The beneficial effects are as follows: 1. In the present invention, the camera scanning module is guided by a steel wire rope to move along a fixed trajectory of the steel wire rope, and the height of the camera scanning module is adjusted by the provided lifting assembly, and it moves with the camera scanning module under the action of the driving assembly, so as to realize the detection of bridge cracks in complex situations with simple operations; 2. The retracting and releasing assembly provided in the present invention can prevent the steel wire rope from being continuously pulled out, and the steel wire rope can be retracted and released as needed to ensure the stability of the camera scanning module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0015] Figure 2 It is a partial three-dimensional structure schematic diagram of the present invention.

[0016] Figure 3 For the present invention Figure 2 It is a three-dimensional structure schematic diagram of the present invention removing the fixed support frame.

[0017] Figure 4 It is a three-dimensional structure schematic diagram of the specific position where the driving assembly of the present invention is located.

[0018] Figure 5 It is a three-dimensional structure schematic diagram of the lifting assembly of the present invention.

[0019] Figure 6 It is a three-dimensional structure schematic diagram of the limiting card of the present invention.

[0020] Figure 7 It is a three-dimensional structure schematic diagram of the connecting assembly of the present invention.

[0021] Figure 8 It is a three-dimensional structure schematic diagram of another perspective of the connecting assembly of the present invention.

[0022] Figure 9 It is a three-dimensional structure schematic diagram of the separating assembly of the present invention.

[0023] Figure 10 It is a three-dimensional structure schematic diagram of the retracting and releasing assembly of the present invention.

[0024] The markings of each component in the attached drawings are as follows: 1 - fixed support frame, 2 - mounting support plate, 3 - wire winding disc, 30 - central shaft, 4 - steel wire rope, 5 - processing control device, 6 - driving clamping wheel, 7 - camera scanning module, 70 - first driving motor, 71 - pulley group, 81 - counterweight stabilizing box, 82 - hydraulic push rod, 83 - fixed connecting plate, 84 - moving roller, 91 - guiding slide rod, 92 - L-shaped clamping plate, 101 - fixed contact plate, 102 - zigzag connecting plate, 103 - L-shaped plate, 104 - extension plate, 105 - limiting post, 111 - sliding top plate, 112 - limiting ejector plate, 121 - second driving motor, 122 - worm gear, 123 - worm. Detailed implementation mode

[0025] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the attached drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the text of the present invention are only based on the attached drawings of the present invention and do not specifically limit the present invention.

[0026] Embodiment: A bridge crack detection device, as Figures 1-3 shown, includes a fixed support frame 1, a mounting support plate 2, a wire winding disc 3, a central shaft 30, a steel wire rope 4, a processing control device 5, a driving clamping wheel 6, a camera scanning module 7, a driving assembly and a lifting assembly. The mounting support plates 2 are symmetrically and fixedly installed on the fixed support frame 1 by bolts. The central shaft 30 is rotatably connected to the mounting support plates 2. Two wire winding discs 3 are symmetrically connected to the central shaft 30 by keys. There are two fixed support frames 1. The wire rope 4 is commonly wound around the wire winding discs 3 provided on the two fixed support frames 1. The two wire ropes 4 are respectively connected to the wire winding discs 3 on both sides. When the two fixed support frames 1 move away from each other, the wire rope 4 can be pulled and lifted. The driving clamping wheel 6 is arranged at the bottom of the processing control device 5. The driving clamping wheel 6 rolls and clamps on the steel wire rope 4. The driving clamping wheel 6 is in close contact with the steel wire rope 4. By means of the driving clamping wheel 6, the processing control device 5 can move on the steel wire rope 4, and the moving direction follows the direction of the steel wire rope 4. The camera scanning module 7 is arranged on the processing control device 5. The camera scanning module 7 is electrically connected to the processing control device 5. The camera scanning module 7 is used to take pictures, scan and sample the bridge surface, analyze it, or transmit the image data to the operator of the ground background system. A driving assembly is installed on the processing control device 5 to drive the driving clamping wheel 6 to rotate. A lifting assembly for driving the fixed support frame 1 to rise and fall is arranged on the fixed support frame 1.

[0027] As Figure 4As shown, the driving assembly includes a first driving motor 70 and a pulley set 71. The first driving motor 70 is installed at the bottom of the processing control device 5. The first driving motor 70 and the transmission clamping wheel 6 are transmitted through the pulley set 71. The first driving motor 70 rotates the transmission clamping wheel 6 of the clamped wire rope 4 with the help of the pulley set 71, thereby allowing the processing control device 5 to move on the wire rope 4.

[0028] like Figure 5 As shown, the lifting assembly includes a counterweight stabilization box 81, a hydraulic push rod 82, a fixed connecting plate 83 and a moving roller 84. The hydraulic push rod 82 is installed in the counterweight stabilization box 81. A counterweight block is provided in the counterweight stabilization box 81 to increase the mass of the box body and ensure that the counterweight stabilization box 81 will not tilt when placed. The fixed connecting plate 83 is installed on the movable rod of the hydraulic push rod 82 by bolts. The fixed connecting plate 83 is fixedly connected to the fixed support frame 1 by bolts. The fixed support frame 1 is sleeved on the outside of the counterweight stabilization box 81. As the movable rod of the hydraulic push rod 82 extends upward, the fixed support frame 1 and all objects arranged on the fixed support frame 1 will be lifted together through the fixed connecting plate 83. A moving roller 84 is installed at the bottom of the counterweight stabilization box 81. The moving roller 84 can facilitate the movement of the counterweight stabilization box 81. When bridge crack detection is required, the braking device on the moving roller 84 can be used to brake to prevent displacement.

[0029] like Figure 6 As shown, it also includes a limiting card. A limiting card is arranged on the counterweight stabilization box 81 for limiting the rotation of the central axis 30; the limiting card includes a guide slide bar 91 and an L-shaped card plate 92. The guide slide bar 91 is slidably penetrated on the counterweight stabilization box 81, and the guide slide bar 91 can slide laterally on the counterweight stabilization box 81. A spring is arranged between the guide slide bar 91 and the counterweight stabilization box 81. An L-shaped card plate 92 is welded at the end of the guide slide bar 91. A transverse groove is opened at the end of the central axis 30, and the L-shaped card plate 92 fits into the transverse groove. The spring arranged on the guide slide bar 91 is used to keep the L-shaped card plate 92 tightly stuck in the transverse groove, so as to prevent the winding drum 3 from rotating when the device is not in use, thereby causing the wire rope 4 wound on the winding drum 3 to become loose. After pulling the L-shaped card plate 92 out of the transverse groove, the winding drum 3 can rotate to release the wire rope 4.

[0030] like Figure 7 and Figure 8As shown in the figure, it further includes a connecting component, and the connecting component is arranged on the fixed support frame 1; the connecting component includes a fixed contact plate 101, a zigzag connecting plate 102, an L-shaped plate 103, an extension plate 104 and a limiting column 105. The fixed contact plate 101 is welded on the fixed support frame 1. The fixed contact plates 101 on the two fixed support frames 1 are in contact with each other at the same height. The zigzag connecting plate 102 is welded on the fixed contact plate 101. The L-shaped plate 103 is welded at the bottom of the L-shaped clamping plate 92. The L-shaped plate 103 moves as the L-shaped clamping plate 92 is pulled. The extension plate 104 is welded on the L-shaped plate 103, and the extension plate 104 moves along with the L-shaped plate 103. The limiting column 105 is welded on the extension plate 104. A through hole is opened on the zigzag connecting plate 102. The limiting columns 105 provided on the two extension plates 104 are alternately buckled in the through hole on the zigzag connecting plate 102. After the two fixed support frames 1 are close to each other, the fixed contact plates 101 are in contact with each other. At this time, pulling the L-shaped clamping plate 92 drives the L-shaped plate 103, the extension plate 104 and the limiting column 105 to move, so that the limiting columns 105 are inserted into the through holes on the zigzag connecting plate 102 on the opposite side, thereby connecting the two fixed support frames 1 together to maintain stability, so as to keep the whole device stable when not in use and avoid shaking and tipping over.

[0031] As Figure 9 shown in the figure, it further includes a separating component, and the separating component is arranged on the fixed support frame 1; the separating component includes a sliding top plate 111 and a limiting ejecting plate 112. The sliding top plate 111 is slidably connected to the fixed support frame 1. A spring is provided between the sliding top plate 111 and the fixed support frame 1, and this spring is used to keep the sliding top plate 111 in a popped state. The sliding top plates 111 provided on the two fixed support frames 1 are at the same height. The limiting ejecting plate 112 is fixedly connected to the sliding top plate 111. The limiting ejecting plate 112 is in contact with the L-shaped plate 103. After the two fixed support frames 1 are connected and fixed together through the connecting component, it will also cause the two sliding top plates 111 to abut against each other and compress the spring. When the L-shaped clamping plate 92 is pulled out, it will contact the limiting ejecting plate 112, and the retraction and reset of the L-shaped clamping plate 92 will be restricted through the limiting ejecting plate 112. After the limiting column 105 disengages from the through hole on the zigzag connecting plate 102, the two abutting sliding top plates 111 will push the two fixed support frames 1 to separate from each other under the action of the spring.

[0032] As Figure 10As shown, it also includes a retractable component, which is arranged on the fixed support frame 1; the retractable component includes a second drive motor 121, a worm wheel 122 and a worm 123, the second drive motor 121 is fixedly installed on the fixed support frame 1 by bolts, the worm 123 is fixedly connected to the output shaft of the second drive motor 121, the worm wheel 122 is fixedly connected to the middle shaft 30, the worm wheel 122 and the worm 123 are meshed, and with the forward / reverse rotation of the second drive motor 121, the middle shaft 30 can be driven by the worm wheel 122 and the worm 123 so that the middle shaft 30 rotates with the winding drum 3, thereby realizing the operation of retracting and releasing the wire rope 4.

[0033] A detection method of a bridge crack detection device specifically comprises the following steps: S1, pull the L-shaped card plate 92 to disengage it from the transverse groove on the central axis 30, and then drive the central axis 30 to rotate through the retractable assembly to extend and release the wire rope 4, and at the same time, the connection assembly will be separated and connected when the L-shaped card plate 92 is pulled. After the two fixed support frames 1 lose the fixation of the connection assembly, the separation assembly will push the two fixed support frames 1 to separate while the retractable assembly releases the wire rope 4; S2, adjust the position of the fixed support frame 1 so that the fixed support frame 1 is below the bridge area to be inspected, and the steel wire rope 4 can be stopped after being extended to the maximum width of the inspection area, brake the moving roller 84, adjust the predetermined parameters of the camera scanning module 7 and perform initialization settings; S3. Use the hydraulic push rod 82 in the lifting assembly to move the fixed support frame 1 and the steel wire rope 4 wound on the winding drum 3 and the camera scanning module 7 to the specified position, and then use the driving assembly on the processing control device 5 to drive the camera scanning module 7 to move along the fixed trajectory of the steel wire rope 4 to complete the scanning detection.

[0034] This embodiment includes the following effects: 1. The camera scanning module 7 is pulled by the steel wire rope 4 to move along the fixed track of the steel wire rope 4, and the height of the camera scanning module 7 is adjusted by the provided lifting component, and the camera scanning module 7 is moved along the fixed track under the action of the driving component, so that the bridge crack detection under complex conditions can be completed with simple operation. The detection operation mode of the device is simple, and it can also be adjusted according to the actual environment on site; 2. The retractable assembly can prevent the steel wire rope 4 from being continuously pulled out, and the steel wire rope 4 can be retracted and released as needed to ensure the stability of the camera scanning module 7.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bridge crack detection device, comprising a processing and control device (5) and a camera scanning module (7), characterized in that, It includes a fixed support frame (1), a mounting support plate (2), a wire winding disc (3), a central shaft (30), a steel wire rope (4), a driving clamping wheel (6), a driving assembly and a lifting assembly. The fixed support frame (1) symmetrically and fixedly connects the mounting support plate (2). The central shaft (30) is rotatably connected to the mounting support plate (2). The wire winding disc (3) is symmetrically and fixedly connected to the central shaft (30). There are two fixed support frames (1). The wire winding discs (3) provided on the two fixed support frames (1) jointly wind the steel wire rope (4). The driving clamping wheel (6) is arranged at the bottom of the processing control device (5). The driving clamping wheel (6) rolls and clamps on the steel wire rope (4). The camera scanning module (7) is arranged on the processing control device (5). The camera scanning module (7) is electrically connected to the processing control device (5). A driving assembly is installed on the processing control device (5) to drive the driving clamping wheel (6) to rotate. A lifting assembly for driving the fixed support frame (1) to rise and fall is arranged on the fixed support frame (1).

2. The bridge crack detection device according to claim 1, characterized in that, The driving assembly includes a first driving motor (70) and a pulley group (71). The first driving motor (70) is installed at the bottom of the processing control device (5). The first driving motor (70) and the driving clamping wheel (6) are driven by the pulley group (71).

3. The bridge crack detection device according to claim 2, characterized in that, The lifting assembly includes a counterweight stabilizing box (81), a hydraulic push rod (82), a fixed connecting plate (83) and a moving roller (84). The hydraulic push rod (82) is installed in the counterweight stabilizing box (81). The movable rod of the hydraulic push rod (82) fixedly connects the fixed connecting plate (83). The fixed connecting plate (83) is fixedly connected to the fixed support frame (1). The fixed support frame (1) is sleeved outside the counterweight stabilizing box (81). The moving roller (84) is installed at the bottom of the counterweight stabilizing box (81).

4. The bridge crack detection device according to claim 3, characterized in that, It also includes a limiting fastener. A limiting fastener for restricting the rotation of the central shaft (30) is arranged on the counterweight stabilizing box (81). The limiting fastener includes a guiding slide rod (91) and an L-shaped clamping plate (92). The guiding slide rod (91) is slidably penetrated through the counterweight stabilizing box (81). A spring is arranged between the guiding slide rod (91) and the counterweight stabilizing box (81). The end of the guiding slide rod (91) fixedly connects the L-shaped clamping plate (92). A horizontal groove is opened at the end of the central shaft (30). The L-shaped clamping plate (92) fits with the horizontal groove.

5. The bridge crack detection device according to claim 4, characterized in that, The invention also comprises a connection component, wherein the connection component is arranged on the fixed support frame (1); the connection component comprises a fixed contact plate (101), a zigzag connecting plate (102), an L-shaped plate (103), an extension plate (104) and a limiting column (105); the fixed contact plate (101) is fixedly connected to the fixed support frame (1); the fixed contact plates (101) on the two fixed support frames (1) are at the same height and contact and cooperate with each other; the fixed contact plate (101) is fixedly connected to the zigzag connecting plate (102); the bottom of the L-shaped clamping plate (92) is fixedly connected to the L-shaped plate (103); the extension plate (104) is fixedly connected to the L-shaped plate (103); the limiting column (105) is fixedly connected to the extension plate (104); the zigzag connecting plate (102) has a through hole; the limiting columns (105) arranged on the extension plates (104) on both sides are interlaced and buckled in the through holes on the zigzag connecting plate (102).

6. The bridge crack detection device according to claim 5, characterized in that, It also includes a separation component, which is arranged on the fixed support frame (1); the separation component includes a sliding top plate (111) and a limiting ejection plate (112); the sliding top plate (111) is slidably connected to the fixed support frame (1); a spring is arranged between the sliding top plate (111) and the fixed support frame (1); the sliding top plates (111) arranged on the two fixed support frames (1) are at the same height; the limiting ejection plate (112) is fixedly connected to the sliding top plate (111); and the limiting ejection plate (112) is in contact with the L-shaped plate (103).

7. The bridge crack detection device according to claim 6, characterized in that, The invention also comprises a retractable assembly, which is arranged on the fixed support frame (1); the retractable assembly comprises a second drive motor (121), a worm wheel (122) and a worm (123); the second drive motor (121) is mounted on the fixed support frame (1); the worm (123) is fixedly connected to the output shaft of the second drive motor (121); the worm wheel (122) is fixedly connected to the middle shaft (30); and the worm wheel (122) and the worm (123) are meshed.

8. A detection method for a bridge crack detection device, characterized in that, The bridge crack detection device according to claim 7 comprises the following steps: S1, pull the L-shaped card plate (92) to disengage it from the transverse groove on the central axis (30), and then drive the central axis (30) to rotate through the retractable assembly to release the wire rope (4), and pull the L-shaped card plate (92) to separate the connection assembly, and then the separation assembly will push the two fixed support frames (1) to separate while the retractable assembly releases the wire rope (4); S2, adjusting the position of the fixed support frame (1) so that the fixed support frame (1) is located below the bridge area to be inspected, the steel wire rope (4) is extended to the maximum width of the inspection area and then stopped, the moving roller (84) is braked, and the predetermined parameters of the camera scanning module (7) are adjusted and initialized; S3. Using a lifting assembly, the fixed support frame (1) and the steel wire rope (4) wound on the winding drum (3) and the camera scanning module (7) are moved to a specified position, and using a driving assembly provided on the processing control device (5) to drive the camera scanning module (7) to move along a fixed track of the steel wire rope (4) to complete scanning detection.

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