Bridge crack detection device

Abstract

A bridge crack detection device comprises a base, a lead screw sliding block mechanism is installed on the base, and the lead screw sliding block mechanism drives a left lower fixing plate and a right lower fixing plate to be relatively close to or away from each other; an electric push rod is mounted in each lower fixing plate and drives the corresponding upper fixing plate to lift up and down; the top end of each upper fixing plate is detachably provided with a connecting plate, and the lower end of each connecting plate is provided with a roller which is driven by a driving assembly to rotate. The bridge crack detection device provided by the utility model can realize rapid detection of bridge cracks.

Description

Technical Field

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

[0002] As an extremely important part of the transportation system, bridges will inevitably have some cracks during long-term use. Depending on the width, length, depth and other parameters of the cracks, their harmfulness will also vary. After cracks appear on the bridge, it is necessary to detect the cracks in time to determine their harmfulness.

[0003] In the prior art, detection on the bridge deck is relatively simple, but it is not easy to detect the bottom and both sides of the bridge due to their high height from the ground. Usually, a work platform is built and workers use handheld detection devices to detect them. However, this detection method is inconvenient and has low detection efficiency. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a bridge crack detection device, which can complete the detection conveniently and quickly.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A bridge crack detection device comprises a base, on which a screw slider mechanism is installed, which drives the left and right lower fixed plates to move relatively closer or farther away; an electric push rod is installed in each lower fixed plate, which drives the upper fixed plate to move up and down; a connecting plate is detachably installed on the top of each upper fixed plate, and a roller is installed on the lower end of the connecting plate, and the roller is driven to rotate by a driving component.

[0007] The screw slider mechanism includes a threaded rod, which can be rotatably installed in a sliding groove of the base and driven by a second motor; the threaded rod is provided with two sections of threads with opposite rotation directions, and the two sliding blocks are correspondingly threadedly connected to the two sections of screws with opposite rotation directions on the threaded rod, and each sliding block is fixedly connected to the corresponding lower fixed plate.

[0008] The driving assembly includes a first rotating column, a second rotating column and a third rotating column rotatably mounted on an upper fixed plate, and the first rotating column, the second rotating column and the third rotating column are driven for synchronous transmission by a synchronous belt transmission mechanism; the ends of the second rotating column and the third rotating column are provided with a clamping groove, and the end faces of one side of the two corresponding rollers are provided with a countersunk hole, and the center of the countersunk hole is provided with a protrusion, and when the second rotating column and the third rotating column extend into the corresponding countersunk hole, the protrusion is engaged with the clamping groove.

[0009] The utility model provides a bridge crack detection device, which has the following technical effects:

[0010] 1) By setting up a synchronous belt transmission mechanism, the roller can be driven to move, and the camera can be used to shoot while walking, which is convenient for staff to check and inspect. There is no need for staff to build a work platform or to use a handheld detection mechanism to detect both sides and the bottom of the bridge, thereby improving detection efficiency.

[0011] 2) By setting the screw slider adjustment mechanism and the electric push rod, the device can be adapted to different bridges, improving the adaptability of the device. In addition, the device can move forward automatically, reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the split structure of the adjustment component of the utility model.

[0015] Figure 3 This is a schematic diagram of the disassembled structure of the drive component of the utility model.

[0016] Figure 4 This is a schematic diagram of the connection structure of the drive assembly of the utility model.

[0017] Figure 5 It is a schematic diagram of the split structure of the upper fixing plate and the lower fixing plate of the utility model.

[0018] Figure 6 It is a schematic diagram of the connection structure between the utility model and the bridge body.

[0019] Figure 7 This is a schematic diagram of the structure of the roller in the utility model (first perspective).

[0020] Figure 8 This is a schematic diagram of the structure of the roller in the utility model (second viewing angle).

[0021] In the figure: base 1, lower fixed plate 2, upper fixed plate 3, connecting plate 4, roller 5, first motor 6, first rotating column 7, second rotating column 8, third rotating column 9, synchronous wheel 10, transmission belt 11, sliding groove 12, threaded rod 13, sliding block 14, second motor 15, circular groove 16, electric push rod 17, camera 18, bridge body 19. DETAILED DESCRIPTION

[0022] like Figure 1-2As shown, a bridge crack detection device includes a base 1, on which two sets of fixing mechanisms are arranged in mirror symmetry. The fixing mechanism includes a lower fixing plate 2, which is arranged on the top surface of the base 1. The bottom surface of the lower fixing plate 2 is fixedly connected to the top surface of the sliding block 14 by bolts, and the left and right sliding blocks 14 are adjusted relative to each other by an adjustment component. An upper fixing plate 3 is arranged on the top surface of the lower fixing plate 2, and the bottom surface of the upper fixing plate 3 is fixedly connected to the output end of the electric push rod 17 on the top surface of the lower fixing plate 2 by bolts, and the upper fixing plate 3 is driven to rise and fall by the electric push rod 17. A connecting plate 4 is arranged on one side of the upper fixing plate 3, and the connecting plate 4 is detachably fixed to the side wall of the upper fixing plate 3 by bolts, and two rollers 5 are arranged on the bottom surface of the connecting plate 4, and the two rollers 5 are driven by a driving component.

[0023] When in use, open the adjustment component to make the width of the two sets of upper fixed plates 3 and the connecting plates 4 match the width of the bridge body 19, then open the drive component to rotate the roller 5, so that the device can detect both sides and the bottom of the bridge body 19.

[0024] like Figure 4 , Figure 7-8 As shown, the driving assembly includes a first motor 6, which is arranged on one side of the upper fixed plate 3 and fixedly mounted on one side of the upper fixed plate 3 by bolts. The output shaft of the first motor 6 is connected to the first rotating column 7, and one side of the first rotating column 7 is rotatably mounted on the side wall of the upper fixed plate 3 through a bearing. The left side of the first rotating column 7 is rotatably mounted with a second rotating column 8 through a bearing, and the right side of the first rotating column 7 is rotatably mounted with a third rotating column 9 through a bearing. The ends of the second rotating column 8 and the third rotating column 9 are both provided with a cross-shaped slot. One side of the corresponding roller 5 is provided with a countersunk hole for the second rotating column 8 and the third rotating column 9 to be inserted, and a cross-shaped protrusion is provided in the center of the countersunk hole. After the second rotating column 8 and the third rotating column 9 are inserted into the countersunk hole, the protrusion and the slot are just plugged into place. A short shaft 5.2 is fixed on the other side of the roller 5, and the short shaft 5.2 freely passes through the hole at the lower end of the roller frame 5.3 and is limited by a nut. After installation, the roller 5 can rotate relative to the roller frame 5.3. The upper end of the roller frame 5.3 is connected to the connecting plate 4 by bolts.

[0025] In addition, two sets of synchronous wheels 10 are welded on the first rotating column 7, and one set of synchronous wheels 10 are welded on the second rotating column 8 and the third rotating column 9. A transmission belt 11 is wound around the synchronous wheels 10 between the second rotating column 8 and the first rotating column 7 and between the first rotating column 7 and the third rotating column 9.

[0026] When in use, the first motor 6 is turned on to rotate the first rotating column 7, and the second rotating column 8 and the third rotating column 9 drive the two rollers 5 on one side to rotate synchronously through the synchronous belt transmission mechanism, so that the device moves forward.

[0027] The adjustment assembly includes a sliding groove 12, which is opened at the upper part of the base 1. Both ends of the threaded rod 13 are rotatably installed in the sliding groove 12 through bearings. The threaded rod 13 is provided with two sections of threads with opposite rotation directions. The threaded rod 13 is correspondingly provided with two sliding blocks 14. The two sliding blocks 14 are respectively threadedly connected with the two sections of screws with opposite rotation directions on the threaded rod 13. The top surface of the sliding block 14 is fixedly connected with the bottom surface of the lower fixed plate 2 by bolts.

[0028] like Figure 2 As shown, a second motor 15 is provided on one side of the base 1, and the second motor 15 is fixedly installed on one side of the base 1 by bolts, and the output shaft of the second motor 15 is connected to the threaded rod 13. When the second motor 15 drives the threaded rod 13 to rotate, the two sliding blocks 14 are relatively close to or away from each other, thereby driving the two lower fixing plates 2 to be relatively close to or away from each other.

[0029] like Figure 5 As shown, a circular groove 16 is provided on the top surface of the lower fixed plate 2, and an electric push rod 17 is fixedly provided at the bottom of the circular groove 16 by bolts. The output end of the electric push rod 17 is fixedly connected to the bottom surface of the upper fixed plate 3 by bolts, and the extension and retraction of the electric push rod 17 will drive the upper fixed plate 3 to extend and retract synchronously.

[0030] When in use, the second motor 15 is turned on, so that the two sliding blocks 14 on the threaded rod 13 slide relative to each other in the sliding groove 12, driving the upper fixed plate 3 to move, so that the device can be adjusted according to the width of the bridge body 19, and then the circular groove 16 is opened to make the output end of the electric push rod 17 drive the upper fixed plate 3 to contract, so that the device can be adjusted according to the thickness of the bridge body 19, and can be adapted to different bridges, thereby increasing the adaptability of the equipment.

[0031] like Figure 2 As shown, preferably, a camera 18 is provided on the top surface of the base 1 and one side of the lower fixing plate 2, and the camera 18 is fixedly installed by bolts.

[0032] When in use, by providing a camera 18 and turning on the camera 18, the staff can observe the conditions on both sides and the bottom of the bridge body 19 through the computer display screen, thereby improving the efficiency of detection.

[0033] Working principle and process:

[0034] 1) When in use, turn on the second motor 15 to make the two sliding blocks 14 on the threaded rod 13 slide relatively in the sliding groove 12, and then drive the upper fixed plate 3 to move relatively, so that the device can be adjusted according to the width of the bridge body 19; then open the circular groove 16 to make the output end of the electric push rod 17 drive the upper fixed plate 3 to shrink, so that the device can be adjusted according to the thickness of the bridge body 19, and can be adapted to different bridges, thereby increasing the adaptability of the equipment.

[0035] 2) Install the device at the bottom of the bridge body 19 through a crane, and install two sets of connecting plates 4 on the left and right sides of the bridge body 19 respectively, so that the end face of one side of the roller 5 is engaged with the corresponding second rotating column 8 and third rotating column 9, and can rotate with the rotation of the second rotating column 8 and third rotating column 9 in the later stage. The lower edge of the roller 5 contacts the top surface of the bridge body 19, and the first motor 6 is turned on to rotate the first rotating column 7 connected to the output shaft of the first motor 6, so that the two sets of synchronous wheels 10 on the first rotating column 7 drive the synchronous wheels 10 on the second rotating column 8 and the third rotating column 9 to rotate synchronously through the transmission belt 11, so that the two rollers 5 connected to one side of the second rotating column 8 and the third rotating column 9 rotate synchronously, and the device is moved forward.

[0036] 3) During the movement, after turning on the camera 18, the staff can observe the conditions on both sides and the bottom of the bridge body 19 through the display screen, thereby improving the efficiency of the inspection.

Claims

1. A bridge crack detection device, characterized in that: The invention comprises a base (1), on which a screw slider mechanism is installed, and the screw slider mechanism drives the left and right lower fixing plates (2) to move relatively closer or farther away; an electric push rod (17) is installed in each lower fixing plate (2), and the electric push rod (17) drives the upper fixing plate (3) to move up and down; a connecting plate (4) is detachably installed at the top end of each upper fixing plate (3), and a roller (5) is installed at the bottom end of the connecting plate (4), and the roller (5) is driven to rotate by a driving component.

2. A bridge crack detection device according to claim 1, characterized in that: The screw slider mechanism comprises a threaded rod (13), which is rotatably mounted in a sliding groove (12) of the base (1) and driven by a second motor (15); the threaded rod (13) is provided with two sections of threads with opposite rotation directions, two sliding blocks (14) are correspondingly threadedly connected to the two sections of screws with opposite rotation directions on the threaded rod (13), and each sliding block (14) is fixedly connected to a corresponding lower fixed plate (2).

3. A bridge crack detection device according to claim 1, characterized in that: The driving assembly comprises a first rotating column (7), a second rotating column (8) and a third rotating column (9) which are rotatably mounted on the upper fixed plate (3); the first rotating column (7), the second rotating column (8) and the third rotating column (9) are driven to transmit synchronously via a synchronous belt transmission mechanism; the second rotating column (8) and the third rotating column (9) are provided with a clamping groove at their ends, and a countersunk hole is provided on one side end surface of the corresponding two rollers (5); a protrusion (5.1) is provided at the center of the countersunk hole; when the second rotating column (8) and the third rotating column (9) extend into the corresponding countersunk hole, the protrusion (5.1) is clamped with the clamping groove.

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