Bridge steel surface crack detection device

Abstract

The invention provides a bridge steel surface crack detection device, and relates to the technical field of steel detection, the bridge steel surface crack detection device comprises a rack, a rotating ring is rotatably mounted on the rack, two sides of the rotating ring are provided with a first conveyor and a second conveyor for conveying steel, the rotating ring is provided with a camera adjusting mechanism, and the camera adjusting mechanism is provided with a camera. The output end of the camera adjusting mechanism is provided with a detection camera, the lower end of the first conveyor and the lower end of the second conveyor are each provided with a distance adjusting mechanism, and the rotating ring is connected with a driving mechanism. According to the invention, all links from conveying and positioning of the steel, adjustment and surrounding detection of the detection camera, and output of the detected steel are automatically completed by corresponding mechanisms, so that the automation degree is high, the working efficiency is improved, the influence of human factors on the detection result is reduced, the detection process is more stable and reliable, and the detection efficiency is improved. And the requirements of large-scale bridge steel detection can be met.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of steel material detection, and in particular to a device for detecting surface cracks in bridge steel material. Background Art

[0002] In the field of bridge construction and maintenance, the quality and safety of bridge steel are of vital importance. Cracks on the surface of steel are a common and critical defect that can seriously affect the structural strength and stability of the bridge and may even cause major safety accidents.

[0003] Traditional methods for detecting cracks on the surface of bridge steel have many limitations. Manual detection is not only inefficient, but also greatly affected by the subjective factors of the inspectors and the working environment, making it difficult to ensure the accuracy and comprehensiveness of the detection. For example, in some complex structures or hard-to-reach areas, manual detection may not be able to conduct a thorough inspection and may easily miss crack hazards.

[0004] Some early detection technologies and equipment, such as simple visual inspection tools or limited local inspection devices, cannot meet the high-precision and comprehensive requirements of modern bridge engineering for steel inspection. With the continuous expansion of bridge construction and the increasing complexity of bridge structures, higher requirements are placed on the efficiency, accuracy and automation of steel surface crack detection.

[0005] At the same time, existing testing equipment often lacks adaptability to steels of different specifications, and it is difficult to flexibly adjust the testing parameters and positions, and cannot meet the diverse testing tasks. Moreover, during the testing process, the stability and reliability of the equipment are also directly related to the authenticity and effectiveness of the test results. Therefore, it is urgent to develop a testing device that can efficiently, accurately, and comprehensively detect surface cracks in bridge steel and has good adaptability and stability, so as to better ensure the quality and safety of bridge projects. Summary of the invention

[0006] 1. Technical problems to be solved by the invention: The present invention provides a bridge steel surface crack detection device to solve the technical problems existing in the above-mentioned background technology.

[0007] 2. Technical solution: To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a bridge steel surface crack detection device, comprising a frame, a rotating ring is rotatably installed on the frame, a first conveyor and a second conveyor for conveying steel are arranged on both sides of the rotating ring, the first conveyor and the second conveyor are arranged correspondingly at the head and tail, a camera adjustment mechanism is arranged on the rotating ring, a detection camera is arranged on the output end of the camera adjustment mechanism, a spacing adjustment mechanism is arranged at the lower end of the first conveyor and the second conveyor, the two spacing adjustment mechanisms are symmetrically arranged, and the rotating ring is connected to the driving mechanism; the driving mechanism is used to drive the rotating ring to rotate, and the spacing adjustment mechanism is used to adjust the distance between the first conveyor and the second conveyor. After the steel is transported by the first conveyor, it is erected between the first conveyor and the second conveyor, and the detection camera adjusts the distance between it and the surface of the steel under the action of the camera adjustment mechanism, and the rotation of the rotating ring drives the detection camera to surround the steel.

[0008] Preferably, the camera adjustment mechanism includes a connecting plate fixed to the rotating ring, two bearing seats are installed on the connecting plate, a screw is rotatably installed between the two bearing seats through a bearing, one end of the screw is connected to the motor shaft of motor 1, a threaded sleeve is threadedly installed on the screw, the threaded sleeve is connected to the adjustment plate, and the adjustment plate is used to install the detection camera.

[0009] Preferably, a plurality of sliders are provided at the lower end of the adjustment plate, a guide rail is fixedly mounted on the connecting plate, the guide rail is arranged parallel to the screw rod, and the slider is slidably mounted on the guide rail.

[0010] Preferably, the spacing adjustment mechanism includes a base plate, a hydraulic cylinder is fixedly mounted on the base plate, a mounting plate is fixedly mounted on the piston rod of the hydraulic cylinder, a slider 2 is provided at the lower end of the mounting plate, a guide rail 2 is fixedly mounted on the base plate, and the slider 2 is slidably mounted on the guide rail 2.

[0011] Preferably, the driving mechanism comprises a gear ring, the rotating ring is concentrically fixed on the gear ring, the gear ring is meshed with a driving gear, the driving gear is fixed on the output end of the reducer, and the input end of the reducer is connected to the motor shaft of the second motor.

[0012] Preferably, a clamping cylinder is provided on the end where the first conveyor and the second conveyor are close to each other.

[0013] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention uses a camera adjustment mechanism to drive the screw to rotate through a motor, and utilizes the principle of thread transmission to accurately adjust the distance between the detection camera and the steel surface. This precise adjustment can ensure that the detection camera can obtain clear and accurate images in the detection of steels of different specifications and shapes, greatly improving the accuracy and reliability of crack detection.

[0014] The spacing adjustment mechanism of the present invention utilizes the extension and contraction of the hydraulic cylinder and the sliding of the slider 2 on the guide rail 2 to flexibly and accurately adjust the distance between the first conveyor and the second conveyor. This enables the device to be adapted to the inspection of steel materials of various widths and specifications, thereby improving the versatility and applicability of the device.

[0015] The driving mechanism of the present invention adopts the method of meshing the gear ring with the driving gear, and through the cooperation of the second motor and the reducer, it can drive the rotating ring to rotate smoothly and at a uniform speed. This allows the detection camera installed on the rotating ring to take all-round pictures around the steel, avoiding the appearance of detection blind spots. The all-round detection method can ensure that every part of the steel surface is carefully inspected, improve the comprehensiveness and reliability of the detection, and can promptly detect cracks at any position on the steel surface, providing a strong guarantee for the safe construction and maintenance of the bridge.

[0016] The invention has a high degree of automation, with each link being automatically completed by the corresponding mechanism, from the transportation and positioning of steel materials, to the adjustment of the detection camera and the surrounding detection, to the output of steel materials after the detection. This automated working method reduces manual intervention, not only improves work efficiency, but also reduces the impact of human factors on the detection results, making the detection process more stable and reliable, and meeting the needs of large-scale bridge steel detection.

[0017] The cooperation of guide rail 1 and slider 1 in the camera adjustment mechanism of the present invention, as well as the cooperation of guide rail 2 and slider 2 in the spacing adjustment mechanism, provide stable guidance and support for the movement of the adjustment plate and the mounting plate, ensuring the stability and accuracy of the position adjustment of the detection camera and the conveyor spacing adjustment. The clamping cylinder firmly clamps the steel during the steel detection process to ensure that the steel will not shake or move during the detection process, further improving the accuracy and reliability of the detection results. The structural design of the entire device is reasonable, and the various components work together, so that the device has high stability and reliability during operation, and can operate stably for a long time, providing reliable technical support for the detection of surface cracks in bridge steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 4 It is a schematic diagram of the structure of the detection camera of the present invention; Figure 5 It is a schematic diagram of the structure of the camera adjustment mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the first conveyor and the second conveyor of the present invention; Figure 7 It is an enlarged schematic diagram of the A region of the present invention; Figure 8 This is the spacing adjustment mechanism of the present invention.

[0019] Reference numerals: 1. Frame; 2. Rotating ring; 3. Camera adjustment mechanism; 31. Connecting plate; 32. Bearing seat; 33. Screw; 34. Motor 1; 35. Threaded sleeve; 36. Adjustment plate; 37. Guide rail 1; 38. Slider 1; 4. Detection camera; 5. First conveyor; 6. Second conveyor; 7. Spacing adjustment mechanism; 71. Bottom plate; 72. Hydraulic cylinder; 73. Mounting plate; 74. Slider 2; 75. Guide rail 2; 8. Driving mechanism; 81. Gear ring; 82. Driving gear; 83. Reducer; 84. Motor 2; 9. Steel; 10. Clamping cylinder. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. Example

[0025] Refer to the attached Figures 1 to 8 A bridge steel surface crack detection device comprises a frame 1, a rotating ring 2 is rotatably mounted on the frame 1, a first conveyor 5 and a second conveyor 6 for conveying steel 9 are arranged on both sides of the rotating ring 2, the first conveyor 5 and the second conveyor 6 are arranged correspondingly at the head and tail, a camera adjustment mechanism 3 is arranged on the rotating ring 2, a detection camera 4 is arranged on the output end of the camera adjustment mechanism 3, a spacing adjustment mechanism 7 is arranged at the lower end of the first conveyor 5 and the second conveyor 6, the two spacing adjustment mechanisms 7 are symmetrically arranged, the rotating ring 2 is connected to the driving mechanism 8; the driving mechanism 8 is used to drive the rotating ring 2 to rotate, the spacing adjustment mechanism 7 is used to adjust the distance between the first conveyor 5 and the second conveyor 6, the steel 9 is transported by the first conveyor 5 and is set between the first conveyor 5 and the second conveyor 6, the detection camera 4 adjusts the distance between it and the surface of the steel 9 under the action of the camera adjustment mechanism 3, and the rotating ring 2 rotates to drive the detection camera 4 to surround the steel 9.

[0026] The camera adjustment mechanism 3 includes a connecting plate 31 fixed on the rotating ring 2, and two bearing seats 32 are installed on the connecting plate 31. A screw rod 33 is rotatably installed between the two bearing seats 32 through a bearing, and one end of the screw rod 33 is connected to the motor shaft of a motor 34. A threaded sleeve 35 is installed on the screw rod 33 through a thread, and the threaded sleeve 35 is connected to an adjustment plate 36. The adjustment plate 36 is used to install the detection camera 4. A plurality of sliders 38 are arranged at the lower end of the adjustment plate 36. A guide rail 37 is fixedly installed on the connecting plate 31. The guide rail 37 is arranged parallel to the screw rod 33, and the slider 38 is slidably installed on the guide rail 37.

[0027] The spacing adjustment mechanism 7 includes a base plate 71, a hydraulic cylinder 72 is fixedly mounted on the base plate 71, a mounting plate 73 is fixedly mounted on the piston rod of the hydraulic cylinder 72, a slider 74 is provided at the lower end of the mounting plate 73, a guide rail 75 is fixedly mounted on the base plate 71, and the slider 74 is slidably mounted on the guide rail 75.

[0028] The driving mechanism 8 includes a gear ring 81 , on which the rotating ring 2 is concentrically fixed. The gear ring 81 meshes with a driving gear 82 , which is fixed to the output end of a reducer 83 , and the input end of the reducer 83 is connected to the motor shaft of a motor 2 84 .

[0029] A clamping cylinder 10 is provided on one end of the first conveyor 5 and the second conveyor 6 which are close to each other.

[0030] Working principle: First, turn on the motor 2 84, the motor shaft of the motor 2 84 rotates, and the rotation of the motor 2 84 is transmitted to the reducer 83. The reducer 83 plays a role in reducing the rotation speed and increasing the torque, so that the output power is more stable and meets the driving requirements. The output end of the reducer 83 drives the driving gear 82 to rotate. Since the driving gear 82 and the gear ring 81 are meshed with each other, the gear ring 81 rotates with the rotation of the driving gear 82. Because the rotating ring 2 is concentrically fixed on the gear ring 81, the rotating ring 2 also starts to rotate and enters the waiting state, preparing for the subsequent detection of the surrounding steel 9.

[0031] At the same time, the hydraulic cylinder 72 in the spacing adjustment mechanism 7 is in the initial position, so that the first conveyor 5 and the second conveyor 6 maintain a suitable initial spacing, which can adapt to the transportation and placement of steel materials under normal circumstances. The steel material 9 to be inspected is transported by the first conveyor 5, which runs smoothly at a preset speed and direction, and transports the steel material 9 toward the second conveyor 6.

[0032] When one end of the steel material 9 reaches the top of the second conveyor 6, the clamping cylinder 10 on the adjacent end of the first conveyor 5 and the second conveyor 6 starts to move. The piston rod of the clamping cylinder 10 extends, pushing the clamping device to clamp the steel material 9 firmly, ensuring that the steel material 9 will not move during the inspection process, providing a stable foundation for subsequent accurate inspection.

[0033] According to the actual width or specification of the steel 9, the distance between the first conveyor 5 and the second conveyor 6 needs to be adjusted. The spacing adjustment mechanism 7 starts to work, and the piston rod of the hydraulic cylinder 72 extends or retracts according to actual needs. When the piston rod extends, it drives the mounting plate 73 to move upward; when the piston rod retracts, the mounting plate 73 moves downward. A slider 2 74 is provided at the lower end of the mounting plate 73, and a guide rail 2 75 is fixedly installed on the bottom plate 71. The slider 2 74 slides on the guide rail 2 75. This matching mode of the guide rail slider can ensure that the movement of the mounting plate 73 is smooth and precise, thereby realizing the precise adjustment of the distance between the first conveyor 5 and the second conveyor 6 to adapt to steels 9 of different specifications.

[0034] After the steel material 9 is positioned, the detection camera 4 needs to be adjusted to a suitable position to ensure that the surface of the steel material 9 can be clearly photographed. At this time, the motor 34 is started, and the motor shaft of the motor 34 drives the screw 33 to rotate between the two bearing seats 32. A threaded sleeve 35 is threadedly mounted on the screw 33, and as the screw 33 rotates, the threaded sleeve 35 moves along the axial direction of the screw 33. Since the threaded sleeve 35 is connected to the adjustment plate 36, the adjustment plate 36 moves with the movement of the threaded sleeve 35. A plurality of sliders 38 are provided at the lower end of the adjustment plate 36, and a guide rail 37 is fixedly mounted on the connecting plate 31, and the guide rail 37 is arranged parallel to the screw 33. The slider 38 slides on the guide rail 37, which not only provides a guiding effect for the movement of the adjustment plate 36, but also ensures the stability and accuracy of the movement of the adjustment plate 36.

[0035] Through the above series of actions, the detection camera 4 can be close to or away from the surface of the steel 9 on the connecting plate 31, so as to adjust to a suitable detection distance from the surface of the steel 9, ensure that the captured image is clear and accurate, and provide high-quality data for subsequent crack detection. When the detection camera 4 is adjusted to a suitable position, the drive mechanism 8 is activated again, and the motor 2 84 continues to operate, driving the gear ring 81 through the reducer 83 and the driving gear 82, thereby causing the rotating ring 2 to rotate at a stable speed. The rotation of the rotating ring 2 drives the detection camera 4 installed on its camera adjustment mechanism 3 to surround the steel 9. During the rotation process, the detection camera 4 shoots the surface of the steel 9 in all directions and without blind spots, and obtains a large amount of image data.

[0036] These image data will serve as an important basis for subsequent analysis of whether there are cracks on the surface of the steel material 9. Through professional image processing software and algorithms, the captured images are analyzed and processed to determine whether there are cracks on the surface of the steel material 9 and the location, size and shape of the cracks. When the detection camera 4 completes the full-scale shooting of the steel material 9, the detection process ends. At this time, the piston rod of the clamping cylinder 10 retracts and releases the clamping of the steel material 9.

[0037] The second conveyor 6 starts to start, and conveys the inspected steel 9 out of the inspection area to enter the subsequent processing or use link.

[0038] Afterwards, the entire device enters the next working cycle, waiting for the arrival of the next steel 9, repeating the above-mentioned series of working processes such as conveying, positioning, adjusting, and detecting, so as to realize continuous detection of surface cracks of bridge steel.

[0039] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A bridge steel surface crack detection device, comprising a frame (1), characterized in that: A rotating ring (2) is rotatably mounted on the frame (1), a first conveyor (5) and a second conveyor (6) for conveying steel (9) are arranged on both sides of the rotating ring (2), the first conveyor (5) and the second conveyor (6) are arranged head to tail correspondingly, a camera adjustment mechanism (3) is arranged on the rotating ring (2), a detection camera (4) is arranged at the output end of the camera adjustment mechanism (3), a spacing adjustment mechanism (7) is arranged at the lower end of each of the first conveyor (5) and the second conveyor (6), the two spacing adjustment mechanisms (7) are symmetrically arranged, and the first conveyor (5) and the second conveyor (6) are arranged at the lower end of each of the first conveyor (5) and the second conveyor (6). The rotating ring (2) is connected to a driving mechanism (8); the driving mechanism (8) is used to drive the rotating ring (2) to rotate; the spacing adjustment mechanism (7) is used to adjust the distance between the first conveyor (5) and the second conveyor (6); the steel (9) is transported by the first conveyor (5) and then installed between the first conveyor (5) and the second conveyor (6); the detection camera (4) adjusts the distance between the detection camera (4) and the surface of the steel (9) under the action of the camera adjustment mechanism (3); the rotating ring (2) rotates to drive the detection camera (4) to surround the steel (9).

2. The bridge steel surface crack detection device according to claim 1 is characterized in that: The camera adjustment mechanism (3) comprises a connecting plate (31) fixed to the rotating ring (2), two bearing seats (32) being mounted on the connecting plate (31), a screw rod (33) being rotatably mounted between the two bearing seats (32) via a bearing, one end of the screw rod (33) being connected to a motor shaft of a motor 1 (34), a threaded sleeve (35) being threadedly mounted on the screw rod (33), the threaded sleeve (35) being connected to an adjustment plate (36), and the adjustment plate (36) being used to mount the detection camera (4).

3. A bridge steel surface crack detection device according to claim 2, characterized in that: A plurality of slide blocks (38) are provided at the lower end of the adjustment plate (36), a guide rail (37) is fixedly mounted on the connection plate (31), the guide rail (37) is arranged parallel to the screw rod (33), and the slide block (38) is slidably mounted on the guide rail (37).

4. The bridge steel surface crack detection device according to claim 1 is characterized in that: The spacing adjustment mechanism (7) comprises a base plate (71), a hydraulic cylinder (72) is fixedly mounted on the base plate (71), a mounting plate (73) is fixedly mounted on the piston rod of the hydraulic cylinder (72), a second slide block (74) is provided at the lower end of the mounting plate (73), a second guide rail (75) is fixedly mounted on the base plate (71), and the second slide block (74) is slidably mounted on the second guide rail (75).

5. The bridge steel surface crack detection device according to claim 1, characterized in that: The driving mechanism (8) comprises a gear ring (81), the rotating ring (2) is concentrically fixed on the gear ring (81), the gear ring (81) is meshed with a driving gear (82), the driving gear (82) is fixed on the output end of a reducer (83), and the input end of the reducer (83) is connected to the motor shaft of the second motor (84).

6. The bridge steel surface crack detection device according to claim 1, characterized in that: A clamping cylinder (10) is provided on the end of the first conveyor (5) and the second conveyor (6) that is close to each other.

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