Crack detection device for bridge stand column

Abstract

The utility model provides a crack detection device for a bridge stand column, belongs to the technical field of bridge detection equipment, and aims to solve the problem that the crack of the bridge stand column is not convenient to detect quickly and efficiently by detection personnel in the prior art, a split type annular guide rail frame is arranged on the split type annular guide rail frame, and an annular sliding rail is arranged on the split type annular guide rail frame. An arc-shaped sliding block is arranged on the annular sliding rail in a sliding manner, the arc-shaped sliding block is fixedly connected with a mounting block, the mounting block is fixedly connected with a power unit, and a camera is mounted on the mounting block; at least three supports are arranged on the periphery of the annular sliding rail and provided with wall climbing mechanisms. The wall climbing mechanism comprises at least three guide rods arranged in parallel, two locking blocks fixedly connected to the two sides of the middles of the guide rods correspondingly, two guide sliding blocks slidably connected to the two ends of the guide rods correspondingly, lead screw nuts fixedly connected to the guide sliding blocks, lead screws in threaded connection with the lead screw nuts, and transmission mechanisms arranged on the locking blocks. The connecting rod mechanism is arranged at the side part of the locking block; and the driving unit is arranged on the connecting rod mechanism.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge detection equipment, and more specifically, particularly relates to a crack detection device for a bridge column. Background Art

[0002] Bridges are now important transportation facilities for vehicles to pass through rivers and mountains. After long-term driving and the influence of natural factors, cracks may appear on the bridge deck, bridge columns, and abutments. In order to ensure the normal use of bridges, bridges need to be inspected regularly.

[0003] At present, the detection and maintenance of bridge cracks mainly rely on manual inspection. Manual inspection methods are time-consuming and require a lot of manpower, material and financial resources. Not only is the detection accuracy low and the human influence factor is large, but in many cases, due to the inaccessibility of the area or the microscopic size of the crack, it is impossible to visually detect the crack. Especially for bridge columns, because they are usually high and have a large unfolding area, manual inspection will result in long-term observation of the same object, resulting in visual fatigue, and at the same time, it also increases the risk factor for inspectors for high-altitude operations. Therefore, the existing technology is not convenient for inspectors to quickly and efficiently detect cracks in bridge columns.

[0004] Therefore, in view of this, research and improvement are conducted on the existing structure and defects, and a crack detection device for a bridge column is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a crack detection device for a bridge column to solve the problem that it is technically inconvenient for detection personnel to perform fast and efficient detection of cracks in bridge columns.

[0006] The purpose and effect of the crack detection device for bridge columns of the utility model are achieved by the following specific technical means:

[0007] A crack detection device for a bridge column, comprising:

[0008] A split annular guide rail frame, wherein the split annular guide rail frame is provided with an annular slide rail, an arc-shaped slider is slidably provided on the annular slide rail, the arc-shaped slider is fixedly connected with a mounting block, the mounting block is fixedly connected with a power unit, the power unit can drive the arc-shaped slider to rotate along the annular slide rail, and a camera is installed on the mounting block, and the camera head of the camera faces the central area of ​​the annular slide rail;

[0009] At least three brackets are arranged on the outer periphery of the annular slide rail, and a wall climbing mechanism is installed on the bracket, and the wall climbing mechanism includes at least three guide rods arranged parallel to each other, two locking blocks fixedly connected to both sides of the middle part of the guide rod, two guide sliders slidably connected to both ends of the guide rod, a screw nut fixedly connected to the guide slider, a screw threadedly connected to the screw nut, a transmission mechanism arranged on the locking block, a connecting rod mechanism arranged on the side of the locking block, and a driving unit installed on the connecting rod mechanism, the locking block is equipped with a second motor, the second motor is connected to one of the screws, and the other screw is connected to the second motor through the transmission mechanism, and the connecting rod mechanism can expand and tighten with the guide slider, thereby driving the driving unit to approach or move away from its corresponding screw.

[0010] Furthermore, the transmission mechanism includes a first gear, a second gear meshing with the first gear, a shaft rotatably connected to the locking block, a third gear fixedly connected to one end of the shaft, a fourth gear meshing with the third gear, and a second gear fixedly connected to the other end of the shaft.

[0011] Furthermore, the connecting rod mechanism includes a swing rod and a linkage rod, one end of the swing rod is hinged to the locking block, one end of the linkage rod is hinged to the guide slider, and the other end of the linkage rod is hinged to the middle of the swing rod.

[0012] Furthermore, the driving unit includes a third motor fixedly connected to the swing arm, a driving bevel gear drivingly connected to the third motor, a driven bevel gear drivingly connected to the driving bevel gear, and a power wheel drivingly connected to the driven bevel gear.

[0013] Furthermore, the power unit includes a first motor fixedly connected to the mounting block, and a roller drivingly connected to the first motor, wherein the outer peripheral surface of the roller contacts the surface of the annular slide rail.

[0014] Furthermore, the annular slide rail includes a first semi-ring body and a second semi-ring body, the first semi-ring body is provided with a first arc-shaped slide rail portion, the second semi-ring body is provided with a second arc-shaped slide rail portion, both ends of the first semi-ring body and the second semi-ring body are provided with side ears, the first semi-ring body and the second semi-ring body are connected end to end, and two adjacent side ears are fixedly connected by fasteners.

[0015] Furthermore, the fasteners include bolts and nuts.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a detachable split annular guide frame, which can be sleeved on the outer periphery of the column, and guides the rotation direction of the arc-shaped slider through the annular slide rail provided on the split annular guide rail frame. Under the driving force of the power unit, the camera rotates on the annular slide rail along with the arc-shaped slider, and the camera continuously takes pictures of the cracks on the outer peripheral surface of the column, and the wall climbing mechanism drives the slider to move in the direction close to the second motor through the second motor drive, thereby driving the linkage rod to open the swing rod outward, and the swing rod applies a clamping force to the outer peripheral wall of the column, and the driving unit drives the crack detection device of the overall bridge column to move upward along the axial direction of the column, thereby realizing fast and convenient crack detection on the outer surface of the column, reducing the labor intensity of the detection personnel and improving the safety factor of the detection personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram (first viewing angle) of a crack detection device for a bridge column of the utility model.

[0019] Figure 2 It is a three-dimensional structural schematic diagram (second viewing angle) of a crack detection device for a bridge column of the utility model.

[0020] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a wall climbing mechanism of a crack detection device for a bridge column.

[0021] Figure 4 It is a schematic diagram of a crack detection device for a bridge column of the utility model crawling on the bridge column during specific implementation.

[0022] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0023] Split annular guide rail frame 1, first semi-ring body 11, side ear 111, first arc-shaped slide rail portion 110, second semi-ring body 12, second arc-shaped slide rail portion 120, bracket 20, wall climbing mechanism 2, guide rod 21, locking block 22, guide slider 23, screw nut 24, screw 25, transmission mechanism 26, first gear 261, second gear 262, shaft 263, third gear 264, fourth gear 265, connecting rod mechanism 27, swing rod 271, linkage rod 272, driving unit 28, third motor 281, active bevel gear 282, driven bevel gear 283, power wheel 284, second motor 29, arc-shaped slider 3, mounting block 31, power unit 4, first motor 41, roller 42, camera 5, fastener 6, bolt 61, nut 60, pedestal 7, column 81, pier cap beam 82, bridge deck 83. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example:

[0028] As attached Figure 1 To Attachment Figure 4 As shown:

[0029] The utility model provides a crack detection device for a bridge column, which is characterized by comprising:

[0030] A split annular guide rail frame 1 is provided with an annular slide rail, an arc-shaped slider 3 is slidably provided on the annular slide rail, the arc-shaped slider 3 is fixedly connected with a mounting block 31, a power unit 4 is fixedly connected with the mounting block 31, the power unit 4 can drive the arc-shaped slider 3 to rotate along the annular slide rail, a camera 5 is installed on the mounting block 31, and the camera head of the camera 5 faces the central area of ​​the annular slide rail;

[0031] At least three brackets 20 are arranged on the periphery of the annular slide rail, and a wall climbing mechanism 2 is installed on the bracket 20. The wall climbing mechanism 2 includes at least three guide rods 21 arranged parallel to each other, two locking blocks 22 fixedly connected to both sides of the middle part of the guide rod 21, two guide sliders 23 slidably connected to the two ends of the guide rod 21, a screw nut 24 fixedly connected to the guide slider 23, a screw 25 threadedly connected to the screw nut 24, a transmission mechanism 26 arranged on the locking block 22, a connecting rod mechanism 27 arranged on the side of the locking block 22, and a driving unit 28 installed on the connecting rod mechanism 27. The locking block 22 is installed with a second motor 29, the second motor 29 is transmission-connected to one screw 25, and the other screw 25 is transmission-connected to the second motor 29 through the transmission mechanism 26. The connecting rod mechanism 27 can expand and tighten with the guide slider 23, thereby driving the driving unit 28 to approach or move away from its corresponding screw 25.

[0032] In this embodiment, a detachable split annular guide frame 1 is provided, which can be sleeved on the outer periphery of the column 81, and the annular slide rail provided on the split annular guide frame 1 guides the rotation direction of the arc slider 3. Under the driving force of the power unit 4, the camera 5 rotates on the annular slide rail along with the arc slider 3, and the camera 5 continuously takes pictures of the cracks on the outer peripheral surface of the column 81, and the wall climbing mechanism 2 drives the guide slider 23 to move toward the direction close to the second motor 29 through the second motor 29, thereby driving the linkage rod 272 to open the swing rod 271 outward, and the swing rod 271 applies a clamping force to the outer peripheral wall of the column 81, and the driving unit 28 drives the crack detection device of the entire bridge column to move upward along the axial direction of the column 81, thereby realizing fast and convenient crack detection on the outer surface of the column 81, reducing the labor intensity of the inspection personnel and improving the safety factor of the inspection personnel.

[0033] The transmission mechanism 26 includes a first gear 261, a second gear 262 meshing with the first gear 261, a shaft 263 rotatably connected to the locking block 22, a third gear 264 fixedly connected to one end of the shaft 263, a fourth gear 265 meshing with the third gear 264, and the other end of the shaft 263 fixedly connected to the second gear 262.

[0034] The transmission mechanism 26 is used to distribute the power of the second motor 29 to the upper and lower sides of the second motor 29, so that the two lead screws 25 are driven simultaneously by the second motor 29, and then the lead screws 25 drive the lead screw nuts 24 on both sides to move synchronously, and the guide slider 23 moves synchronously with the lead screw nut 24 to approach or move away from the second motor 29.

[0035] The connecting rod mechanism 27 includes a swing rod 271 and a linkage rod 272 . One end of the swing rod 271 is hinged to the locking block 22 , one end of the linkage rod 272 is hinged to the guide slider 23 , and the other end of the linkage rod 272 is hinged to the middle of the swing rod 271 .

[0036] The linkage rod 272 of the connecting rod mechanism 27 swings along with the up and down movement of the guide slider 23 , and the swing rod 271 moves away from and close to the axis where the lead screw 25 is located along with the swing of the linkage rod 272 .

[0037] The driving unit 28 includes a third motor 281 fixedly connected to the swing rod 271 , a driving bevel gear 282 drivingly connected to the third motor 281 , a driven bevel gear 283 drivingly connected to the driving bevel gear 282 , and a power wheel 284 drivingly connected to the driven bevel gear 283 .

[0038] The power wheel 284 on the driving unit 28 can swing with the swing rod 271, so that when the swing rod 271 is away from one end of the locking block 22 and close to the outer wall of the column 81, the third motor 281 drives the active bevel gear 282 to rotate, and then drives the driven bevel gear 283 to rotate through the active bevel gear 282, and the driven bevel gear 283 drives the power wheel 284 to rotate on the outer wall of the column 81, thereby driving the crack detection device structure of the entire bridge column to move upward.

[0039] The power unit 4 includes a first motor 41 fixedly connected to the mounting block 31 and a roller 42 drivingly connected to the first motor 41 , wherein the outer peripheral surface of the roller 42 contacts the surface of the annular slide rail.

[0040] The roller 42 can be tightly attached to the outer wall of the column 81 under the support pressure of the connecting rod mechanism 27 to increase the friction between the roller 42 and the outer wall of the column 81, so that the driving unit 28 can drive the crack detection device of the bridge column to move upward stably.

[0041] The annular slide rail includes a first semi-ring body 11 and a second semi-ring body 12. The first semi-ring body 11 is provided with a first arc-shaped slide rail portion 110, and the second semi-ring body 12 is provided with a second arc-shaped slide rail portion 120. Both ends of the first semi-ring body 11 and the second semi-ring body 12 are provided with side ears 111. The first semi-ring body 11 and the second semi-ring body 12 are connected end to end, and two adjacent side ears 111 are fixedly connected by fasteners 6.

[0042] The connection between the first arc-shaped slide rail portion 110 and the second arc-shaped slide rail portion 120 is smooth, which is conducive to the sliding of the arc-shaped slider 3 on the annular slide rail.

[0043] The fastener 6 includes a bolt 61 and a nut 60 .

[0044] The bolt 61 and the nut 60 are convenient for locking the first half ring body 11 and the second half ring body 12, connecting the first half ring body 11 and the second half ring body 12 into one body, and are also convenient for disassembly after use.

[0045] In a general bridge, the lower end of the column 81 is the pedestal 7, the upper end of the column 81 is the pier cap beam 82, and then the bridge deck 83 is arranged on the pier cap beam 82.

[0046] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A crack detection device for a bridge column, characterized in that: include: A split annular guide rail frame (1), wherein the split annular guide rail frame (1) is provided with an annular slide rail, an arc-shaped slider (3) is slidably provided on the annular slide rail, the arc-shaped slider (3) is fixedly connected to a mounting block (31), the mounting block (31) is fixedly connected to a power unit (4), the power unit (4) is capable of driving the arc-shaped slider (3) to rotate along the annular slide rail, a camera (5) is installed on the mounting block (31), and the camera head of the camera (5) faces the central area of ​​the annular slide rail; At least three brackets (20) are arranged on the outer periphery of the annular slide rail, and a wall climbing mechanism (2) is installed on the bracket (20), and the wall climbing mechanism (2) comprises at least three guide rods (21) arranged in parallel with each other, two locking blocks (22) respectively fixedly connected to both sides of the middle of the guide rod (21), two guide slide blocks (23) respectively slidably connected to the two ends of the guide rod (21), a lead screw nut (24) fixedly connected to the guide slide block (23), a lead screw (25) threadedly connected to the lead screw nut (24), and a transmission mechanism (25) arranged on the locking block (22). 6) a connecting rod mechanism (27) arranged on the side of the locking block (22), and a driving unit (28) installed on the connecting rod mechanism (27); the locking block (22) is installed with a second motor (29); the second motor (29) is connected to one of the lead screws (25) by transmission; the other lead screw (25) is connected to the second motor (29) by transmission through a transmission mechanism (26); the connecting rod mechanism (27) can expand and contract with the guide slider (23), thereby driving the driving unit (28) to approach or move away from its corresponding lead screw (25).

2. A crack detection device for a bridge column as claimed in claim 1, characterized in that: The transmission mechanism (26) comprises a first gear (261), a second gear (262) meshing with the first gear (261), a shaft (263) rotatably connected to the locking block (22), a third gear (264) fixedly connected to one end of the shaft (263), a fourth gear (265) meshing with the third gear (264), and the other end of the shaft (263) fixedly connected to the second gear (262).

3. A crack detection device for a bridge column as claimed in claim 1, characterized in that: The connecting rod mechanism (27) comprises a swing rod (271) and a linkage rod (272); one end of the swing rod (271) is hinged to the locking block (22); one end of the linkage rod (272) is hinged to the guide slider (23); and the other end of the linkage rod (272) is hinged to the middle of the swing rod (271).

4. A crack detection device for a bridge column as claimed in claim 3, characterized in that: The driving unit (28) comprises a third motor (281) fixedly connected to the swing rod (271), a driving bevel gear (282) drivingly connected to the third motor (281), a driven bevel gear (283) drivingly connected to the driving bevel gear (282), and a power wheel (284) drivingly connected to the driven bevel gear (283).

5. The crack detection device for a bridge column according to claim 1, characterized in that: The power unit (4) comprises a first motor (41) fixedly connected to the mounting block (31), and a roller (42) drivingly connected to the first motor (41), wherein the outer peripheral surface of the roller (42) contacts the surface of the annular slide rail.

6. A crack detection device for a bridge column as claimed in claim 1, characterized in that: The annular slide rail comprises a first semi-ring body (11) and a second semi-ring body (12); the first semi-ring body (11) is provided with a first arc-shaped slide rail portion (110); the second semi-ring body (12) is provided with a second arc-shaped slide rail portion (120); both ends of the first semi-ring body (11) and the second semi-ring body (12) are provided with side ears (111); the first semi-ring body (11) and the second semi-ring body (12) are connected end to end; and two adjacent side ears (111) are fixedly connected by a fastener (6).

7. A crack detection device for a bridge column as claimed in claim 6, characterized in that: The fastener (6) comprises a bolt (61) and a nut (60).

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