Steel structure defect detection device based on visual detection

Abstract

The application discloses a steel structure defect detection device based on visual detection and relates to the field of steel structure defect detection, and solves the problem that the existing detection device is difficult to detect tubular steel structures in batches, comprising: a device base and a conveying frame fixedly installed on the top of the device base, the top of the device base is fixedly installed with a circular frame, and the outer side of the circular frame is installed with a detection probe frame; further comprising: a detection mechanism for detecting defects on the inner side of the tubular steel structure, the detection mechanism is installed on the inner side of the circular frame, and the detection mechanism comprises four detection probe seats arranged on the outer side of the circular frame; the conveying frame is used for conveying the tubular steel structure through the detection mechanism, the inner side of the tubular steel structure is detected by the detection probe seat, the tubular steel structure on the conveying frame is conveyed to the outer side of the detection probe frame, the outer side of the tubular steel structure is detected, and thus the tubular steel structure can be conveniently detected in batches.

Description

Technical Field

[0001] This invention relates to the field of steel structure defect detection, specifically a steel structure defect detection device based on vision inspection. Background Technology

[0002] In the construction industry, structural steel is an important structural material, which can generally be divided into steel for steel structures and steel bars for reinforced concrete structures. Among them, steel for steel structures mainly includes ordinary carbon structural steel and low alloy structural steel, and the varieties cover section steel, steel pipe and steel bar, etc.

[0003] During industrial production, due to the influence of the production environment and processes, structural steel inevitably develops a variety of defects, including cracks, inclusions, indented iron oxide, pitting, scratches, abrasions, scabs, holes, rust spots, and bubbles, among others. These defects not only affect the appearance quality of the product but may also have a significant negative impact on its mechanical properties, safety, and service life. Non-destructive testing (NDT) technology, as a comprehensive application technology involving multiple disciplines, can inspect steel structures using visual inspection probes without compromising the performance of the inspected object. However, when inspecting tubular steel structures, existing inspection devices typically inspect the outer side of the steel structure first and then the inner wall. This repeated handling process makes it difficult to perform batch inspections of multiple steel structures, resulting in low inspection efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a steel structure defect detection device based on visual inspection, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A visual inspection-based steel structure defect detection device includes: a device base and a conveyor frame fixedly installed on the top of the device base; a circular frame is fixedly installed on the top of the device base, and a detection probe frame is fixedly installed on the outer side of the circular frame; it also includes: a detection mechanism for detecting defects on the inner side of a tubular steel structure, the detection mechanism being installed on the inner side of the circular frame, the detection mechanism including four detection probe seats arranged symmetrically on the outer side of the circular frame, the detection probe seats being capable of detecting defects on the inner side of the tubular steel structure; an inner support mechanism for smoothly conveying the tubular steel structure, the inner support mechanism being installed on the outer side of the circular frame, the inner support mechanism including four adjusting rods arranged symmetrically on the outer side of the circular frame, the adjusting rods being capable of supporting the inner side of the tubular steel structure; and a cleaning mechanism for cleaning impurities on the outer side of the tubular steel structure, the cleaning mechanism being installed on the outer side of the circular frame, the cleaning mechanism including four cleaning roller brushes arranged symmetrically on the outer side of the circular frame, the cleaning roller brushes being capable of cleaning impurities on the outer side of the tubular steel structure.

[0007] Preferably, the detection mechanism further includes a mounting plate rotatably mounted inside the circular frame. A first motor is fixedly mounted on the side of the circular frame away from the mounting plate, and the output end of the first motor is fixedly connected to the outer side of the mounting plate. Four baffles are centrally symmetrically distributed on the side of the mounting plate away from the first motor. Mounting brackets are fixedly mounted between the four baffles and the four detection probe seats. A slider is mounted on the end of the baffle away from the mounting bracket. A sliding groove for limiting the sliding of the slider is opened on the outer side of the mounting plate. A U-shaped block is fixedly mounted on the side of the slider away from the baffle. A slide frame for limiting the sliding of the U-shaped block is fixedly mounted on the outer side of the mounting plate. A screw that cooperates with the U-shaped block is rotatably mounted on the inner side of the slide frame. A second motor is fixedly mounted on the outer side of the mounting plate. A conical wheel that cooperates with the screw is fixedly mounted on the outer side of the second motor and at one end of the screw.

[0008] Preferably, the inner support mechanism further includes four movable blocks slidably mounted on the outside of the mounting frame, four adjusting rods rotatably mounted on the inside of the four mounting frames, four external threads on the outside of the adjusting rods, and the helical directions of two adjacent external threads being opposite, the four movable blocks being threadedly assembled on the four external threads of the adjusting rods, four centrally symmetrically distributed connecting rods being hingedly mounted on the outside of the movable blocks, push blocks being hingedly mounted between the connecting rods on two adjacent movable blocks, a pressure rod being slidably mounted on the inside of the push block, a pressure block being fixedly mounted on one end of the pressure rod, a spring being fixedly mounted between the pressure block and the push block, four centrally symmetrically distributed positioning plates being fixedly mounted between the mounting frame and the baffle, the end of the pressure rod away from the pressure block being slidably mounted on the outside of the positioning plate, a gear being fixedly mounted on the end of the adjusting rod away from the mounting frame, and a rack plate cooperating with the gear being fixedly mounted on the inside of the slide.

[0009] Preferably, the cleaning mechanism further includes a toothed ring fixedly installed on the outside of the baffle, an arc-shaped rack fixedly installed on the inner side of the circular frame, a rotating cylinder fixedly installed on the side of the baffle near the slider, a positioning shaft fixedly installed on the outer side of the rotating cylinder, and a cavity opened on the inner side of the slider for the rotating cylinder and the positioning shaft to be rotatably installed, and a positioning frame rotatably installed on the outer side of the cleaning roller brush, and the positioning frame is fixedly installed on the outer side of the mounting plate.

[0010] Preferably, the conveyor belt on the conveyor frame has an arc-shaped concave structure.

[0011] Preferably, a plurality of centrally symmetrically distributed sliding balls are rotatably mounted on the outer side of the mounting plate, and an annular groove is provided on the inner side of the circular frame for limiting the sliding of the sliding balls.

[0012] Preferably, a support plate is fixedly installed between the slider and the U-shaped block, and the outer side of the support plate is in contact with the outer side of the mounting plate.

[0013] Preferably, the mounting plate has two symmetrically distributed positioning ribs in its groove, and the outer side of the slider has a groove that cooperates with the positioning ribs.

[0014] Preferably, a rubber block is fixedly installed at the end of the pressure block away from the pressure rod, and the rubber block has a semi-circular structure.

[0015] Preferably, a positioning cylinder is slidably mounted on the outer side of the pressure rod, and the positioning cylinder is fixedly mounted on the outer side of the positioning plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention uses a detection mechanism to transport a tubular steel structure via a conveyor frame, allowing the detection probe to enter the inner side of the tubular steel structure for defect detection. The tubular steel structure is then transported from the conveyor frame to the outer side of the detection probe frame for defect detection, thus achieving multi-angle detection and transfer, improving the detection efficiency of tubular steel structures, and facilitating batch detection of multiple tubular steel structures.

[0018] This invention, through its internal support mechanism, enables multiple pressure blocks to simultaneously press against the inner side of the tubular steel structure during the lifting process of the mounting frame, thereby achieving internal support positioning of the tubular steel structure. The multi-point positioning method avoids damage to the tubular steel structure, thus achieving a smooth transfer effect.

[0019] This invention, through a cleaning mechanism, enables the baffle to come close to the inner side of the circular frame. When the mounting plate moves the baffle and the mounting frame, the toothed ring on the outer side of the baffle can contact the arc-shaped rack, causing the baffle to rotate during its circular motion. The cleaning roller brush can then clean the tubular steel structure in its rotating state, scraping away impurities from the surface of the tubular steel structure. Furthermore, the detection probe frame can perform defect detection on the tubular steel structure in its rotating state, thereby achieving a comprehensive inspection effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the detection probe holder and cleaning roller brush structure in this invention;

[0022] Figure 3 This is a schematic diagram of the circular frame and mounting plate structure in this invention;

[0023] Figure 4 for Figure 3 Enlarged structural diagram of area A in the middle;

[0024] Figure 5 This is a schematic diagram of the carriage and screw structure in this invention;

[0025] Figure 6 This is a schematic diagram of the U-shaped block and support plate structure in this invention;

[0026] Figure 7 This is a schematic diagram of the moving block and connecting rod structure in this invention;

[0027] Figure 8 This is a schematic diagram of the push block and pressure block structure in this invention.

[0028] In the diagram: 1. Device base; 2. Conveyor frame; 3. Circular frame; 4. Detection probe frame; 5. Detection probe seat; 6. Adjusting rod; 7. Cleaning roller brush; 8. Mounting plate; 9. First motor; 10. Baffle plate; 11. Mounting frame; 12. Slider; 13. U-shaped block; 14. Slide carriage; 15. Screw; 16. Second motor; 17. Conical wheel; 18. Positioning cylinder; 19. Moving block; 20. Connecting rod; 21. Push block; 22. Pressure rod; 23. Pressure block; 24. Spring; 25. Positioning plate; 26. Gear; 27. Rack plate; 28. Gear ring; 29. ​​Arc rack; 30. Rotary cylinder; 31. Positioning shaft; 32. Positioning frame; 33. Sliding ball; 34. Support plate; 35. Rubber block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-8 The visual inspection-based steel structure defect detection device shown in the figure includes a device base 1 and a conveyor frame 2 fixedly installed on the top of the device base 1 for conveying tubular steel structures. A circular frame 3 is fixedly installed on the top of the device base 1, and a detection probe frame 4 is fixedly installed on the outside of the circular frame 3, so that the detection probe frame 4 can perform defect detection on the outside of the tubular steel structure conveyed on the conveyor frame 2. It also includes a detection mechanism for performing defect detection on the inside of the tubular steel structure, and the detection mechanism is installed on the inside of the circular frame 3.

[0031] The inspection mechanism includes four centrally symmetrically arranged inspection probe seats 5 on the outside of a circular frame 3. The inspection probe seats 5 are capable of inspecting the inner side of the tubular steel structure for defects. The mechanism also includes a mounting plate 8 rotatably mounted inside the circular frame 3. A first motor 9 is fixedly mounted on the side of the circular frame 3 away from the mounting plate 8, and the output end of the first motor 9 is fixedly connected to the outside of the mounting plate 8, enabling the first motor 9 to drive the mounting plate 8 to rotate. Four centrally symmetrically distributed baffles 10 are arranged on the side of the mounting plate 8 away from the first motor 9. Mounting frames 11 are fixedly installed between each of the four baffles 10 and the four inspection probe seats 5, allowing the conveyor frame 2 to transport the tubular steel structure to be inspected to the outside of the inspection probe seats 5. The probe holder 5 can enter the inner side of the tubular steel structure to detect the inner gap of the tubular steel structure, and the end of the tubular steel structure can abut against the outer side of the baffle 10. A slider 12 is installed on the end of the baffle 10 away from the mounting bracket 11. A groove is opened on the outer side of the mounting plate 8 for limiting the sliding of the slider 12. A U-shaped block 13 is fixedly installed on the side of the slider 12 away from the baffle 10. A slide frame 14 is fixedly installed on the outer side of the mounting plate 8 for limiting the sliding of the U-shaped block 13. A screw 15 that cooperates with the U-shaped block 13 is rotatably installed on the inner side of the slide frame 14. When the screw 15 rotates, it can drive the U-shaped block 13 to move along the outer side of the slide frame 14. The U-shaped block 13 can then drive the baffle 10 to move through the slider 12, so that the baffle... 10. The tubular steel structure is pushed away from the conveyor frame 2 by the mounting frame 11. The mounting plate 8 can then drive the four mounting frames 11 to change positions, moving the tubular steel structure to the outside of the detection probe frame 4. The detection probe frame 4 can then inspect the outside of the tubular steel structure and remove the inspected tubular steel structure. The conveyor frame 2 can then transport the next tubular steel structure. A second motor 16 is fixedly mounted on the outside of the mounting plate 8. A matching conical wheel 17 is fixedly mounted on the outside of the second motor 16 and one end of the screw 15, allowing the second motor 16 to drive the screw 15 to rotate through the conical wheel 17. The conveyor belt on the conveyor frame 2 has an arc-shaped concave structure, which facilitates the smooth transport of the tubular steel structure. Multiple centrally symmetrically distributed ball bearings 33 are rotatably mounted on the outer side of the mounting plate 8. An annular groove is provided on the inner side of the circular frame 3 to limit the sliding of the ball bearings 33. When the mounting plate 8 rotates, it can drive the ball bearings 33 to slide along the inner side of the circular frame 3, improving the stability of the rotation of the mounting plate 8. A support plate 34 is fixedly installed between the slider 12 and the U-shaped block 13. The outer side of the support plate 34 contacts the outer side of the mounting plate 8, so that the support plate 34 provides support for the slider 12 and the mounting frame 11. The mounting frame 11 can smoothly lift the tubular steel structure. Two symmetrically distributed positioning ribs are provided in the groove of the mounting plate 8, and the outer side of the slider 12 is provided with a groove that matches the positioning ribs, improving the stability of the movement of the slider 12.

[0032] Example 2: Please refer to Figures 3-8This embodiment further illustrates Example 1. The internal support mechanism shown in the figure includes four adjusting rods 6 arranged symmetrically on the outside of the circular frame 3. The adjusting rods 6 can support the tubular steel structure internally. The internal support mechanism also includes four movable blocks 19 slidably mounted on the outside of the mounting frame 11. The four adjusting rods 6 are respectively rotatably mounted on the inside of the four mounting frames 11. The outer side of the adjusting rod 6 has four external threads, and the helical directions of two adjacent external threads are opposite. The four movable blocks 19 are respectively threaded onto the four external threads of the adjusting rod 6. When the adjusting rod 6 rotates, it can carry the internal support through the four external threads. Four movable blocks 19 move along the outer side of the mounting frame 11, with adjacent movable blocks 19 moving closer to or further away from each other. Four centrally symmetrically distributed connecting rods 20 are hinged to the outer side of each movable block 19. Push blocks 21 are hinged between the connecting rods 20 on adjacent movable blocks 19. A pressure rod 22 is slidably mounted on the inner side of the push block 21. A pressure block 23 is fixedly mounted at one end of the pressure rod 22. A spring 24 is fixedly mounted between the pressure block 23 and the push block 21. Four centrally symmetrically distributed positioning plates 25 are fixedly mounted between the mounting frame 11 and the baffle 10. The pressure rod 22 moves away from the pressure block 23. One end of the sliding rod 23 is slidably mounted on the outside of the positioning plate 25. When two adjacent moving blocks 19 approach each other, the two connecting rods 20 can push the push block 21 to move, causing the push block 21 to drive the pressure rod 22 to move along the outside of the positioning plate 25. The pressure block 23 can then contact the inside of the tubular steel structure and use the spring 24 to achieve elastic internal support positioning of the tubular steel structure, improving the stability of the mounting frame 11 during the transfer of the tubular steel structure. The end of the adjusting rod 6 away from the mounting frame 11 is fixedly mounted with a gear 26, and the inner side of the slide 14 is fixedly mounted with a rack plate 27 that meshes with the gear 26, so that the mounting frame 11 When moving, it can drive the gear 26 on the adjusting rod 6 to contact the rack plate 27, so that the rack plate 27 drives the adjusting rod 6 to rotate through the gear 26. A rubber block 35 is fixedly installed at the end of the pressure block 23 away from the pressure rod 22, and the rubber block 35 has a semi-circular structure, so that the pressure block 23 passes through the rubber block 35 to the inner side of the tubular steel structure, avoiding damage to the inner side of the tubular steel structure. A positioning cylinder 18 is slidably installed on the outer side of the pressure rod 22. The positioning cylinder 18 is fixedly installed on the outer side of the positioning plate 25, so that the pressure rod 22 can move along the outer side of the positioning cylinder 18, improving the stability of the movement of the pressure rod 22.

[0033] Example 3: Please refer to Figures 1-3This embodiment further illustrates other embodiments. The cleaning mechanism shown in the figure includes four cleaning roller brushes 7 arranged symmetrically on the outside of the circular frame 3. The cleaning roller brushes 7 can clean impurities on the outside of the tubular steel structure. The cleaning mechanism also includes a toothed ring 28 fixedly installed on the outside of the baffle 10. An arc-shaped rack 29 is fixedly installed on the inside of the circular frame 3. When the mounting plate 8 rotates, it can drive the toothed ring 28 on the baffle 10 to contact the arc-shaped rack 29 on the inside of the circular frame 3, so that the arc-shaped rack 29 drives the toothed ring 28 to rotate. The toothed ring 28 can then drive the mounting frame 11 to rotate through the baffle 10, so that the mounting frame 11 drives the tubular steel structure to rotate through the pressure block 23. The cleaning roller brushes 7 on the outside of the mounting plate 8 can clean the tubular steel structure in the rotating state. As the mounting plate 8 rotates, the rotating tubular steel structure can move to the bottom of the detection probe frame 4, allowing the detection probe frame 4 to perform a comprehensive inspection of the outer side of the tubular steel structure. A rotating cylinder 30 is fixedly installed on the side of the baffle 10 near the slider 12, and a positioning shaft 31 is fixedly installed on the outer side of the rotating cylinder 30. A cavity is opened on the inner side of the slider 12 for the rotating cylinder 30 and the positioning shaft 31 to rotate and install. When the slider 12 moves, it can drive the baffle 10 to move through the rotating cylinder 30 and the positioning shaft 31. When the baffle 10 rotates, it can drive the rotating cylinder 30 and the positioning shaft 31 to rotate on the inner side of the slider 12. A positioning frame 32 is rotatably installed on the outer side of the cleaning roller brush 7, and the positioning frame 32 is fixedly installed on the outer side of the mounting plate 8 to provide support for the cleaning roller brush 7.

[0034] Working principle: First, the operator places the tubular steel structures to be inspected onto the conveyor frame 2 in sequence, allowing the conveyor frame 2 to transport multiple tubular steel structures sequentially. When the tubular steel structure aligns with the inspection probe seat 5, as the conveyor frame 2 moves, the tubular steel structure can fit over the outside of the inspection probe seat 5, allowing the inspection probe seat 5 to inspect the inside of the tubular steel structure for defects. Subsequently, the end of the tubular steel structure contacts the baffle 10. At this point, the conveyor frame 2 stops running, and the operator starts the second motor 16. The second motor 16 drives four screws 15 to rotate synchronously through the conical wheel 17, causing the screws 15 to move the U-shaped block 13 along the outside of the slide 14. The U-shaped block 13 then moves the slider 12 along... The sliding groove on the mounting plate 8 moves, causing the slider 12 to move via the rotating cylinder 30 and the positioning shaft 31, which in turn drives the baffle 10 to move. The baffle 10 then drives the mounting frame 11 to move synchronously. Simultaneously, the mounting frame 11 drives the gear 26 to rotate via the adjusting rod 6, causing the gear 26 to move along the outer side of the rack plate 27. The rack plate 27, in turn, drives the adjusting rod 6 to rotate via the gear 26. The adjusting rod 6 drives four moving blocks 19 to move via four external threads. Two adjacent moving blocks 19 move closer to each other, causing the moving blocks 19 to push the push block 21 to move via the connecting rod 20. The push block 21 drives the pressure rod 22 to move along the inner side of the positioning cylinder 18, causing the pressure rod 22 to drive the pressure block 23 to contact the inner side of the tubular steel structure. The elasticity of spring 24 enables multi-point internal support positioning of the tubular steel structure, allowing the mounting frame 11 to smoothly lift the tubular steel structure from the conveyor frame 2. Then, the first motor 9 drives the mounting plate 8 to rotate, causing the mounting plate 8 to drive the four baffles 10 to rotate synchronously. The baffles 10, which hold the tubular steel structure, can then move the tubular steel structure off the conveyor frame 2 and bring it close to the arc-shaped rack 29. The arc-shaped rack 29 drives the baffles 10 to rotate through the toothed ring 28. The baffles 10 then drive the mounting frame 11 to rotate, causing the mounting frame 11 to drive the tubular steel structure to rotate through the pressure block 23. The cleaning roller brush 7 can then clean the tubular steel structure in the rotating state. As the mounting plate 8 rotates, the roller brush 7 cleans the tubular steel structure. In its rotating state, the tubular steel structure can move to the underside of the inspection probe frame 4, allowing the inspection probe frame 4 to perform a comprehensive defect inspection on the outer side of the tubular steel structure. Finally, the inspected tubular steel structure moves to one side of the conveyor frame 2, and the second motor 16 starts again, causing the mounting frame 11, which has moved above the conveyor frame 2, to approach the conveyor frame 2. The mounting frame 11, which holds the tubular steel structure, can then move the pressure block 23 away from the inner side of the tubular steel structure, releasing the inspected tubular steel structure so that the operator can pick it up. The conveyor frame 2 can then transport the next tubular steel structure, enabling continuous inspection of multiple tubular steel structures, thus achieving comprehensive and batch inspection and improving inspection efficiency.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel structure defect detection device based on vision inspection, characterized in that, include: The device base and the conveyor frame fixedly installed on the top of the device base. A circular frame is fixedly installed on the top of the device base, and a detection probe frame is installed on the outside of the circular frame. Also includes: The inspection mechanism is used to inspect the inner side of a tubular steel structure for defects. The inspection mechanism is installed on the inner side of a circular frame and includes four inspection probe seats arranged symmetrically on the outer side of the circular frame. The inspection probe seats can inspect the inner side of the tubular steel structure for defects. An installation plate is rotatably installed on the inner side of the circular frame. A first motor is installed on one side of the circular frame, and the output end of the first motor is fixedly connected to the outer side of the installation plate. Four baffles are provided on one side of the installation plate. Installation frames are fixedly installed between the four baffles and the four inspection probe seats. A slider is installed on one end of the baffle. A groove is opened on the outer side of the installation plate for the slider to slide in a limited position. A U-shaped block is fixedly installed on one side of the slider. A slide frame is installed on the outer side of the installation plate for the U-shaped block to slide in a limited position. An internal support mechanism is used for the smooth transport of tubular steel structures. The internal support mechanism is installed on the outside of a circular frame and includes four adjusting rods located on the outside of the circular frame. The adjusting rods can support the tubular steel structure internally. The internal support mechanism also includes four movable blocks slidably installed on the outside of the mounting frame. The four adjusting rods are rotatably installed on the inside of the four mounting frames. The outer side of the adjusting rods has four external threads, and the helical directions of two adjacent external threads are opposite. The four movable blocks are threaded onto the four external threads on the adjusting rods. The outer side of the movable blocks is hinged with four connecting rods. A push block is hinged between the connecting rods on two adjacent movable blocks. A pressure rod is slidably installed on the inner side of the push block. A pressure block is fixedly installed at one end of the pressure rod. A spring is installed between the pressure block and the push block. Four positioning plates are installed between the mounting frame and the baffle. One end of the pressure rod is slidably installed on the outside of the positioning plate. A gear is fixedly installed at one end of the adjusting rod. A rack plate that meshes with the gear is fixedly installed on the inner side of the slide. The cleaning mechanism is used to clean impurities from the outside of the tubular steel structure. The cleaning mechanism is installed on the outside of the circular frame.

2. The steel structure defect detection device based on vision inspection according to claim 1, characterized in that: The detection mechanism also includes a screw rotatably mounted inside the slide, and a U-shaped block threadedly fitted to the outside of the screw. A second motor is mounted on the outside of the mounting plate, and a matching conical wheel is fixedly mounted on the outside of the second motor and one end of the screw.

3. The steel structure defect detection device based on vision inspection according to claim 1, characterized in that: The cleaning mechanism includes four cleaning rollers arranged symmetrically on the outside of a circular frame. The cleaning rollers can clean impurities on the outside of the tubular steel structure. The cleaning mechanism also includes a toothed ring installed on the outside of the baffle. An arc-shaped rack is installed on the inside of the circular frame. A rotating cylinder is fixedly installed on one side of the baffle. A positioning shaft is fixedly installed on the outside of the rotating cylinder. A cavity is opened on the inside of the slider for the rotating cylinder and the positioning shaft to rotate and install. A positioning frame is rotatably installed on the outside of the cleaning rollers, and the positioning frame is fixedly installed on the outside of the mounting plate.

4. The steel structure defect detection device based on vision inspection according to claim 1, characterized in that: The conveyor belt on the conveyor frame has an arc-shaped concave knot.

5. The steel structure defect detection device based on vision inspection according to claim 2, characterized in that: Multiple sliding balls are rotatably mounted on the outer side of the mounting plate, and an annular groove is provided on the inner side of the circular frame for the sliding balls to be limited and slid.

6. The steel structure defect detection device based on vision inspection according to claim 2, characterized in that: A support plate is installed between the slider and the U-shaped block, and the outer side of the support plate is in contact with the outer side of the mounting plate.

7. The steel structure defect detection device based on vision inspection according to claim 2, characterized in that: The mounting plate has two positioning ribs in its groove, and the outer side of the slider has a groove that matches the positioning ribs.

8. The steel structure defect detection device based on vision inspection according to claim 1, characterized in that: A rubber block is fixedly installed at one end of the pressure block, and the rubber block has a semi-circular structure.

9. The steel structure defect detection device based on vision inspection according to claim 1, characterized in that: A positioning cylinder is slidably installed on the outside of the pressure rod, and the positioning cylinder is installed on the outside of the positioning plate.

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