A device for detecting surface cracks of steel material for road and bridge engineering

Abstract

The utility model discloses a kind of steel surface crack detection devices for road and bridge engineering, it is related to bridge steel material technical field, including feed conveyor, feeding conveyor and penetration detection box, feeding conveyor is located in the side of feed conveyor, and penetration detection box is fixedly installed between both, the top surface of feed conveyor is slidably connected with steel body, and one end of steel body is located feeding conveyor top surface and is arranged penetration detection box;The inner chamber of penetration detection box is sequentially provided with cleaning assembly, spraying assembly and detection assembly along material conveying direction, and the rotary brush head of cleaning assembly can effectively remove the adherend on the surface of steel, lay the foundation for penetration process, the nozzle of spraying assembly realizes the overall coverage of penetrant, and the detection assembly first scrapes off excess penetrant, then uses ultraviolet light to excite residual penetrant to develop, can accurately position crack, intuitively show crack morphology, effectively improve the accuracy of detection, provide solid guarantee for steel quality control for road and bridge engineering.

Description

Technical Field

[0001] This utility model relates to the field of bridge steel technology, specifically a device for detecting surface cracks in steel used in road and bridge engineering. Background Technology

[0002] The steel surface crack detection device for road and bridge engineering is designed specifically for detecting minute cracks on the surface of steel. It can significantly improve detection efficiency and accuracy, provide key data support for bridge safety assessment, and reduce the risk of omissions in manual inspection.

[0003] In the field of bridge engineering, steel plates are key load-bearing components, and their mechanical properties directly determine the safety and service life of bridge structures. If cracks appear on the surface of steel plates, they will not only reduce the effective area of ​​the steel plate cross section, but may also become a stress concentration source under load, causing the cracks to spread rapidly or even penetrate the component, leading to catastrophic accidents such as fracture and collapse. Furthermore, under the combined effects of long-term load, environmental corrosion, or sudden temperature changes, structural deterioration will be accelerated, significantly reducing load-bearing capacity and durability, resulting in a chain of risks such as soaring maintenance costs or traffic disruption.

[0004] However, existing testing equipment has certain limitations in detecting cracks in bridge steel plates. Some equipment lacks the accuracy to identify tiny cracks on the surface of the steel plate, which can easily lead to missed detection of minor defects and create potential safety hazards. Furthermore, most equipment cannot visually represent the crack morphology and requires professional personnel to analyze it using complex algorithms. This is not only time-consuming and labor-intensive, but also prone to misjudgment due to human error during the analysis process, further reducing the accuracy and reliability of the detection.

[0005] Therefore, this utility model provides a device for detecting surface cracks in steel used in road and bridge engineering to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a device for detecting surface cracks in steel used in road and bridge engineering, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A surface crack detection device for steel used in road and bridge engineering includes a feeding conveyor belt, a delivery conveyor belt, and a penetrant testing box. The delivery conveyor belt is located on one side of the feeding conveyor belt, and the penetrant testing box is fixedly installed between the two. The top surface of the feeding conveyor belt is slidably connected to the steel body.

[0009] The inner cavity of the penetrant testing chamber is sequentially equipped with a cleaning component, a spraying component, and a testing component along the material conveying direction. The spraying component is fixedly installed at the center of the inner cavity of the penetrant testing chamber and includes a nozzle, which is used to uniformly spray crack developing penetrant onto the surface of the steel body. The cleaning component is located at the feed end of the spraying component and includes a rotating brush head, which is used to remove adhering substances from the steel surface to ensure that the crack channels are unobstructed. The testing component is located at the discharge end of the spraying component and includes a scraping structure for removing excess penetrant from the surface and a testing instrument, which is fixedly connected to the inner wall of the penetrant testing chamber. The cleaning component, spraying component, and testing component effectively complete the pretreatment, penetrant, and developing testing processes, so that the residual penetrant at the crack is clearly visible under ultraviolet light excitation, thereby intuitively and accurately locating the crack position.

[0010] As a further embodiment of this utility model, the scraping structure includes a fixed partition plate, which is fixedly installed inside the penetrant testing chamber. A plurality of adjusting blocks for fitting steel bodies of different sizes are slidably connected to one side of the fixed partition plate. Each adjusting block has a scraper fixedly installed on the side near the steel body by bolts, which is used to remove excess fluorescent penetrant from the surface of the steel body. A drive disk for driving the adjusting block to rotate is slidably connected to the end of the adjusting block away from the fixed partition plate.

[0011] As a further embodiment of this utility model, the drive disk is a sawtooth disk, and a motor for providing power is fixedly installed inside the permeation testing box. The output shaft of the motor is fixedly installed with a gear, which meshes with the drive disk.

[0012] As a further embodiment of this utility model, the spraying assembly also includes a spraying ring pipe, which is fixedly connected to the inner wall of the penetrant testing chamber via a connecting block. Multiple nozzles are provided and symmetrically and evenly distributed on one side of the spraying ring pipe. A liquid supply tank is installed on the outside of the penetrant testing chamber, and the liquid supply tank is connected to the spraying ring pipe via a pipe.

[0013] As a further embodiment of this utility model, the cleaning component also includes a fixing block, which is fixedly connected to the inner wall of the penetration testing box. There are multiple fixing blocks, and each fixing block is fixedly connected to a moving rod on the side near the steel body. One end of the moving rod is slidably fitted with a fixing base, and the fixing base is rotatably connected to the rotating brush head.

[0014] As a further embodiment of this utility model, the outer wall of the permeation testing box is fixedly mounted with a support frame for support and fixation by bolts, and a main control box for controlling the overall autonomous operation of the device is fixedly mounted on one side of the permeation testing box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. When this utility model is used, the cleaning component, spraying component, and testing component work together to form a complete and efficient testing system. The rotating brush head of the cleaning component can effectively remove the adhering substances on the steel surface, ensuring that the crack channels are unobstructed and laying the foundation for the penetration process. The nozzle of the spraying component achieves full coverage of the penetrant. The testing component first scrapes off the excess penetrant, and then uses ultraviolet light to excite the residual penetrant for development. This can accurately locate the cracks, intuitively display the crack morphology, and facilitate the judgment of their condition, effectively improving the accuracy and reliability of the test, and providing a solid guarantee for the quality control of steel used in road and bridge engineering.

[0017] 2. When this utility model is in use, multiple adjusting blocks can slide on the fixed partition and fit together through the drive disc, which can flexibly adapt to steel of different sizes, ensuring that the scraper is in close contact with the steel surface. During operation, the drive disc drives the adjusting blocks to rotate under the action of power, so that the scraper moves along the steel surface, efficiently scraping off excess fluorescent penetrant. The penetrant then flows out from the empty groove of the adjusting block and is collected, thereby avoiding excess penetrant from interfering with subsequent detection, ensuring detection accuracy, realizing effective recovery and recycling of penetrant, and reducing detection costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a surface crack detection device for steel used in road and bridge engineering.

[0019] Figure 2 This is a cross-sectional view of the penetrant testing box in a steel surface crack detection device for road and bridge engineering.

[0020] Figure 3 This is a structural exploded view of the detection component in a steel surface crack detection device for road and bridge engineering.

[0021] Figure 4 This is a schematic diagram of the scraper structure in a steel surface crack detection device for road and bridge engineering.

[0022] Figure 5 This is a cross-sectional view of the cleaning component in a steel surface crack detection device for road and bridge engineering.

[0023] In the diagram: 1. Feed conveyor belt; 2. Material conveyor belt; 3. Penetrant testing chamber; 4. Steel body;

[0024] 5. Cleaning components; 501. Rotating brush head; 502. Fixing block; 503. Moving rod; 504. Fixing base; 505. Return spring;

[0025] 6. Spraying components; 601. Nozzle; 602. Spraying ring pipe; 603. Liquid supply tank; 604. Collection box;

[0026] 7. Detection components; 701. Fixed partition; 702. Adjusting block; 703. Scraper; 704. Drive disc; 705. Collection box; 706. Motor; 707. Gear; 708. Positioning partition; 709. Detector;

[0027] 8. Support frame; 9. Main control box. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 , Figure 2 In this embodiment of the utility model, a steel surface crack detection device for road and bridge engineering includes a feeding conveyor belt 1, a feeding conveyor belt 2, and a penetrant testing box 3. The feeding conveyor belt 2 is located on one side of the feeding conveyor belt 1, and the penetrant testing box 3 is fixedly installed between the two. A steel body 4 is slidably connected to the top surface of the feeding conveyor belt 1, and one end of the steel body 4 passes through the penetrant testing box 3 and is located on the top surface of the feeding conveyor belt 2.

[0030] The inner cavity of the penetrant testing chamber 3 is sequentially equipped with a cleaning component 5, a spraying component 6, and a testing component 7 along the material conveying direction. The spraying component 6 is fixedly installed at the center of the inner cavity of the penetrant testing chamber 3, including a nozzle 601, which is used to uniformly spray crack developing penetrant on the surface of the steel body 4. The cleaning component 5 is located at the feed end of the spraying component 6, including a rotating brush head 501, which is used to remove the adhering substances on the steel surface to ensure that the crack channel is unobstructed. The testing component 7 is located at the discharge end of the spraying component 6, including a scraping structure for removing excess penetrant on the surface and a testing instrument 709, which is fixedly connected to the inner wall of the penetrant testing chamber 3. The pretreatment, penetrant and developing testing processes are effectively completed through the cleaning component 5, the spraying component 6 and the testing component 7, so that the penetrant remaining at the crack is clearly visible under ultraviolet light excitation, thereby intuitively and accurately locating the crack position.

[0031] Specifically, both the feeding conveyor belt 1 and the feeding conveyor belt 2 are composed of a motor, multiple rollers, and a support frame. Each pair of rollers is linked by a belt and a pulley to ensure that the device can smoothly transport materials (this is existing technology and will not be elaborated on here).

[0032] Please see Figure 2 , Figure 3 , Figure 4The scraping structure includes a fixed partition 701, which is fixedly installed inside the penetrant testing chamber 3. A plurality of adjusting blocks 702 for fitting steel bodies 4 of different sizes are slidably connected to one side of the fixed partition 701. The plurality of adjusting blocks 702 are closely fitted and distributed among each other. A scraper 703 is fixedly installed on the side of each adjusting block 702 near the steel body 4 by bolts. The scraper 703 is used to remove excess fluorescent penetrant from the surface of the steel body 4. A drive disk 704 for driving the adjusting block 702 to rotate is slidably connected to the end of the adjusting block 702 away from the fixed partition 701.

[0033] Specifically, each adjusting block 702 has a transmission shaft fixedly connected to both sides for transmitting rotational power. The inner cavities of the fixed partition 701 and the drive disk 704 are provided with transmission grooves to assist the adjusting block 702 in sliding smoothly, and the transmission shaft is located in the transmission groove. The center of the fixed partition 701 and the drive disk 704 are provided with through holes to facilitate the passage of the steel body 4.

[0034] More specifically, each adjusting block 702 has an inner cavity with a slot to facilitate the outflow of excess fluorescent permeate, and a collection box 705 for collecting excess fluorescent permeate is fixedly installed on the bottom surface of the permeate detection box 3.

[0035] The drive disk 704 is a sawtooth disk. The inside of the penetrant testing box 3 is fixedly installed a motor 706 for providing power. The output shaft of the motor 706 is fixedly installed with a gear 707, which meshes with the drive disk 704.

[0036] Specifically, the end of the drive disk 704 away from the adjusting block 702 is rotatably connected to a positioning partition 708 via a bearing, and the positioning partition 708 is fixedly connected to the inner wall of the permeation testing chamber 3. The positioning partition 708 is used to fix and support the drive disk 704.

[0037] Please refer to 2. The spraying assembly 6 also includes a spraying ring pipe 602. The spraying ring pipe 602 is fixedly connected to the inner wall of the penetrant testing box 3 through a connecting block. Multiple nozzles 601 are provided and are symmetrically and evenly distributed on one side of the spraying ring pipe 602 to achieve full coverage spraying of the steel body 4 without dead angles. A liquid supply tank 603 is installed on the outside of the penetrant testing box 3 for the storage and supply of fluorescent penetrant. The liquid supply tank 603 is connected to the spraying ring pipe 602 through a pipe.

[0038] Specifically, a collection box 604 is fixedly installed on the bottom of the penetrant testing box 3, which is used to efficiently collect the fluorescent penetrant dripping during the spraying process. The collection box 604, the liquid supply tank 603 and the collection box 705 are all connected to each other through pipes to form a closed-loop circulation system. With the help of the pump, the system can be recycled, effectively reducing the waste of penetrant, reducing the testing cost, and preventing the overflow of waste liquid from polluting the environment.

[0039] More specifically, a baffle is provided between the cleaning component 5 and the spraying component 6, and it is fixedly connected to the inner wall of the penetrant testing chamber 3 to prevent fluorescent penetrant from splashing everywhere.

[0040] Please see Figure 2 , Figure 5 The cleaning component 5 also includes a fixing block 502, which is fixedly connected to the inner wall of the penetration test box 3. There are multiple fixing blocks 502, and each fixing block 502 is fixedly connected to a moving rod 503 on the side near the steel body 4. One end of the moving rod 503 is slidably fitted with a fixing base 504, and the fixing base 504 is rotatably connected to the rotating brush head 501.

[0041] Specifically, a reset spring 505 is fixedly installed in the inner cavity of the fixed base 504, and one end of the reset spring 505 is fixedly connected to the moving rod 503. Through the elastic deformation capability of the reset spring 505, the rotating brush head 501 can adapt to the change of the outer diameter of the steel body 4, and maintain a constant pressure when contacting the surface of the steel body 4, ensuring uniform coverage of cleaning force and effectively eliminating cleaning blind spots caused by poor contact.

[0042] More specifically, a connecting ring is fixedly installed on the bottom surface of the fixed base 504, and the rotating brush head 501 is rotatably inserted into the connecting ring. When the rotating brush head 501 contacts the surface of the steel body 4, it can passively rotate with the movement of the steel body 4. No additional driving device is required. Self-rotation cleaning is achieved through friction, which reduces energy consumption and enhances the removal effect of impurities on the surface of the steel body 4 through the relative movement between the brush head and the steel surface, thereby improving the efficiency and reliability of the pretreatment process.

[0043] Please see Figure 1 The outer wall of the penetrant testing box 3 is fixed with a support frame 8 for support and fixation by bolts, and a main control box 9 for controlling the overall autonomous operation of the device is fixedly installed on one side of the penetrant testing box 3.

[0044] The working principle of this utility model is as follows:

[0045] When this utility model is used, the feeding conveyor belt 1 first conveys the steel body 4 to the inside of the penetrant testing box 3. The rotating brush head 501 adapts to the outer diameter of the steel body 4 through the reset spring 505 and rotates under the action of friction, thereby removing the adhering substances on the surface of the steel body 4.

[0046] Next, the nozzle 601 of the spraying assembly 6 sprays the crack fluorescent penetrating liquid evenly onto the surface of the steel body 4 from the spraying ring pipe 602. The penetrating liquid dripping during the spraying process is collected by the collection box 604 and forms a closed-loop circulation system with the liquid supply tank 603 and the collection box 705 for reuse.

[0047] Subsequently, the steel body 4 enters the detection component 7, where the motor 706 drives the gear 707 to rotate, which in turn drives the drive disk 704 to rotate. The drive disk 704 rotates the adjustment block 702 through the transmission shaft. The scraper 703 on the adjustment block 702 adheres to the surface of the steel body 4 and scrapes off excess fluorescent penetrant. The excess penetrant flows into the collection box 705 through the empty groove of the adjustment block 702.

[0048] Finally, the detector 709 uses ultraviolet light to excite the residual penetrating liquid at the crack, making it clearly visible and thus locating the crack. The entire process is controlled by the main control box 9, achieving automated detection.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A surface crack detection device for steel used in road and bridge engineering, comprising a feeding conveyor belt (1), a conveyor belt for feeding materials (2), and a penetrant testing box (3), characterized in that, The feeding conveyor belt (2) is located on one side of the feeding conveyor belt (1), and the penetration test box (3) is fixedly installed between the two. The top surface of the feeding conveyor belt (1) is slidably connected to the steel body (4). The inner cavity of the penetrant testing chamber (3) is provided with a cleaning component (5), a spraying component (6) and a testing component (7) in sequence along the material conveying direction. The spraying component (6) is fixedly installed at the center of the inner cavity of the penetrant testing chamber (3) and includes a nozzle (601). The cleaning component (5) is located at the feed end of the spraying component (6) and includes a rotating brush head (501), which is used to remove the adhering substances on the steel surface to ensure that the crack channels are unobstructed. The testing component (7) is located at the discharge end of the spraying component (6) and includes a scraping structure for removing excess penetrant from the surface and a testing instrument (709). The testing instrument (709) is fixedly connected to the inner wall of the penetrant testing chamber (3).

2. The surface crack detection device for steel used in road and bridge engineering according to claim 1, characterized in that, The scraping structure includes a fixed partition (701) which is fixedly installed inside the penetrant testing chamber (3). A plurality of adjusting blocks (702) for fitting steel bodies (4) of different sizes are slidably connected to one side of the fixed partition (701). Each adjusting block (702) has a scraper (703) fixedly installed on the side of the steel body (4) by bolts, which is used to remove excess fluorescent penetrant from the surface of the steel body (4). The end of the adjusting block (702) away from the fixed partition (701) is slidably connected to a drive disk (704) for driving the adjusting block (702) to rotate.

3. The surface crack detection device for steel used in road and bridge engineering according to claim 2, characterized in that, The drive disk (704) is a sawtooth disk. The inside of the permeation testing box (3) is fixedly installed a motor (706) for providing power. The output shaft of the motor (706) is fixedly installed with a gear (707) that meshes with the drive disk (704).

4. The surface crack detection device for steel used in road and bridge engineering according to claim 1, characterized in that, The spraying assembly (6) also includes a spraying ring pipe (602), which is fixedly connected to the inner wall of the penetrant testing box (3) via a connecting block. Multiple nozzles (601) are provided and are symmetrically and evenly distributed on one side of the spraying ring pipe (602). A liquid supply tank (603) is installed on the outside of the penetrant testing box (3), and the liquid supply tank (603) is connected to the spraying ring pipe (602) via a pipe.

5. The surface crack detection device for steel used in road and bridge engineering according to claim 1, characterized in that, The cleaning component (5) also includes a fixing block (502), which is fixedly connected to the inner wall of the penetration testing box (3). There are multiple fixing blocks (502), and each fixing block (502) is fixedly connected to a moving rod (503) on the side near the steel body (4). One end of the moving rod (503) is slidably fitted with a fixing base (504), and the fixing base (504) is rotatably connected to the rotating brush head (501).

6. The surface crack detection device for steel used in road and bridge engineering according to claim 1, characterized in that, The outer wall of the permeation testing box (3) is fixedly installed with a support frame (8) for support and fixation by bolts, and a main control box (9) for controlling the overall autonomous operation of the device is fixedly installed on one side of the permeation testing box (3).

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