A stainless steel pipe surface defect detection device

Abstract

The utility model discloses a kind of stainless steel pipe surface defect detection devices, belong to steel pipe detection technical field, its technical scheme main points include supporting plate and stainless steel pipe body, the front side of the supporting plate is fixedly connected with inclined plane, the top of the stainless steel pipe body is provided with visual inspection camera, the front side of the supporting plate is provided with push mechanism, the rear side of the supporting plate top is provided with driving mechanism, the four corners of the supporting plate top are all provided with fixed hole;The push mechanism includes two push wheels, connecting plate, first electric telescopic link, fixed plate and connecting frame, the push wheel is rotatably connected at the rear side of connecting plate, solve the rotating wheel distance bottom plate has certain height in the prior art patent, especially when the relatively thick and heavy stainless steel pipe is detected on surface defect, it is inconvenient to move the thick and heavy stainless steel pipe to rotating wheel, lead to the problem that it is relatively inconvenient to detect the relatively thick and heavy stainless steel pipe surface defect.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe testing technology, and in particular to a device for detecting surface defects in stainless steel pipes. Background Technology

[0002] Surface defect detection of stainless steel pipes refers to the process of identifying, locating, and quantitatively analyzing whether there are defects on the outer and inner surfaces of stainless steel pipes that affect performance, safety, or compliance, using professional technical means and equipment. Its core objective is to screen out qualified products, eliminate unqualified products, and provide data support for optimizing production processes, ultimately ensuring the safety and reliability of stainless steel pipes in subsequent applications.

[0003] In existing steel pipe surface defect detection devices, inspection is generally carried out manually. However, the defects on steel pipes vary in size, and small defects may be overlooked due to dim lighting or obstructed light. This not only leads to low efficiency but also fails to guarantee the accuracy of the inspection. Furthermore, the clamping operation of the steel pipe during inspection is cumbersome.

[0004] The existing patent (publication number: CN221260977U) discloses a steel pipe surface defect detection device. By placing the steel pipe on a rotating wheel and fixing the steel pipe with tops on both sides, the steel pipe is rotated and the surface defects of the steel pipe are detected while rotating. The detection is fast, unobstructed, highly accurate, and easy to assemble and disassemble.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, the rotating wheel proposed in these patents is at a certain height from the base plate. This makes it inconvenient to move the heavy stainless steel pipe onto the rotating wheel, especially when performing surface defect detection on thicker stainless steel pipes. This results in difficulties in detecting surface defects on thicker stainless steel pipes.

[0006] Therefore, a surface defect detection device for stainless steel pipes is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a stainless steel pipe surface defect detection device, which can solve the problem in the existing patents that the rotating wheel is at a certain height from the base plate, especially when detecting surface defects in relatively thick stainless steel pipes, it is inconvenient to move the thick stainless steel pipes onto the rotating wheel, which makes the detection of surface defects in relatively thick stainless steel pipes inconvenient.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a stainless steel pipe surface defect detection device, comprising a support plate and a stainless steel pipe body, wherein a ramp plate is fixedly connected to the front side of the support plate, a visual inspection camera is provided on the top of the stainless steel pipe body, a pushing mechanism is provided on the front side of the support plate, a driving mechanism is provided on the rear side of the top of the support plate, and fixing holes are provided at the four corners of the top of the support plate.

[0009] The pushing mechanism includes two pushing wheels, a connecting plate, a first electric telescopic rod, a fixing plate, and a connecting frame. The pushing wheels are rotatably connected to the rear side of the connecting plate. The front side of the connecting plate is fixedly connected to the rear side of the telescopic end of the first electric telescopic rod. The front side of the first electric telescopic rod is fixedly connected to the rear side of the fixing plate. The bottom of the fixing plate is fixedly connected to the top of the connecting frame.

[0010] Preferably, the drive mechanism includes a first geared motor, a rubber wheel, and a sliding plate. The bottom of the first geared motor is fixedly connected to the top of the sliding plate, the right side of the rubber wheel is fixedly connected to the left side of the output shaft of the first geared motor, and the surface of the rubber wheel is in contact with the surface of the stainless steel pipe body.

[0011] Preferably, both sides of the top of the tray are fixedly connected to slide rails, and the slide plate is slidably connected inside the slide rails.

[0012] Preferably, a fixing block is fixedly connected to the rear side of the top of the tray, and a rotating rod is threadedly connected to the inside of the fixing block. The front side of the rotating rod is rotatably connected to the rear side of the slide plate.

[0013] Preferably, the bottom of the connecting frame is rotatably connected to a ball bearing, the ball bearing is a plurality of balls evenly distributed at the bottom of the connecting frame, and the top of the connecting frame is fixedly connected to a push rod.

[0014] Preferably, limit rods are provided on both sides of the connecting frame, and the side of the limit rod closest to the connecting frame passes through the connecting frame and extends into the interior of the tray.

[0015] Preferably, a magnet is fixedly connected to the surface of the limiting rod, and the surface of the magnet is magnetically attracted to the surface of the connecting frame.

[0016] Preferably, the top of the tray has a groove, and the bottom of the inner wall of the groove is rotatably connected to a support wheel, the surface of which is in contact with the surface of the stainless steel pipe body.

[0017] Preferably, a second electric telescopic rod is fixedly connected to both sides of the top of the pallet, and a connecting rod is fixedly connected between the top of the telescopic ends of the two second electric telescopic rods.

[0018] Preferably, a second reduction motor is fixedly connected to the left side of the top of the connecting rod, a lead screw is fixedly connected to the right side of the output shaft of the second reduction motor, a slider is threaded onto the surface of the lead screw, a sliding sleeve is fixedly connected to the bottom of the slider, the top of the visual inspection camera is fixedly connected to the bottom of the sliding sleeve, the sliding sleeve is slidably fitted onto the surface of the connecting rod, a support block is fixedly connected to the right side of the top of the connecting rod, and the right side of the lead screw is rotatably connected to the left side of the support block.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This application sets up a pushing mechanism, which reduces friction by using the bottom ball bearings of the connecting frame. With the help of the top push rod, the connecting frame can be easily pushed to contact the tray. Then, the connecting frame and the tray are stably connected by the limit rod with magnet. Subsequently, the extension end of the first electric telescopic rod is controlled to push the connecting plate and the pushing wheel backward. This can push the heavy stainless steel pipe body along the slope plate into the groove at the top of the tray, where it is supported by the rotation of the support wheel. The heavy stainless steel pipe body can be accurately pushed to the detection position without the need for manual handling. This effectively solves the problem of the heavy stainless steel pipe being inconvenient to move to the detection position in the existing patent, saving manpower and improving pushing efficiency.

[0021] 2. This application, by setting up a drive mechanism, rotates the rotating rod inside the fixed block. Under the guidance of the slide rail on the slide plate, it can drive the slide plate and the first reduction motor on top to move back and forth, thereby adjusting the contact state between the rubber wheel and the stainless steel pipe body to adapt to stainless steel pipe bodies of different diameters. After the first reduction motor is started, its output shaft drives the rubber wheel to rotate. Utilizing the friction between the rubber wheel and the stainless steel pipe body, the stainless steel pipe body is driven to achieve stable circumferential rotation on the support wheel in the groove. This provides continuous and stable rotation conditions for the visual inspection camera to comprehensively inspect the surface defects of the steel pipe, ensuring that the inspection process proceeds in an orderly manner. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the stainless steel pipe surface defect detection device of this utility model;

[0023] Figure 2 This is a three-dimensional schematic diagram of the connection between the support plate and the second electric telescopic rod in this utility model;

[0024] Figure 3 This is a three-dimensional connection diagram of the pushing mechanism in this utility model;

[0025] Figure 4 This is a three-dimensional connection diagram of the connecting rod and the sliding sleeve in this utility model;

[0026] Figure 5 This is a three-dimensional exploded view of the slide plate and slide rail in this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the bottom of the connecting frame in this utility model.

[0028] In the diagram, 1. support plate; 2. ramp plate; 3. pushing mechanism; 301. pushing wheel; 302. connecting plate; 303. first electric telescopic rod; 304. fixing plate; 305. connecting frame; 4. stainless steel pipe body; 5. second electric telescopic rod; 6. visual inspection camera; 7. groove; 8. support wheel; 9. drive mechanism; 901. first geared motor; 902. rubber wheel; 903. sliding plate; 10. fixing hole; 11. limit rod; 12. magnet; 13. push rod; 14. connecting rod; 15. sliding sleeve; 16. support block; 17. slider; 18. lead screw; 19. second geared motor; 20. slide rail; 21. fixing block; 22. rotating rod; 23. ball bearing. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-6 The present invention provides the following technical solution:

[0031] A surface defect detection device for stainless steel pipe includes a support plate 1 and a stainless steel pipe body 4. A ramp plate 2 is fixedly connected to the front side of the support plate 1. A visual inspection camera 6 is installed on the top of the stainless steel pipe body 4. A pushing mechanism 3 is installed on the front side of the support plate 1. A driving mechanism 9 is installed on the rear side of the top of the support plate 1. Fixing holes 10 are opened at the four corners of the top of the support plate 1.

[0032] The pushing mechanism 3 includes two pushing wheels 301, a connecting plate 302, a first electric telescopic rod 303, a fixing plate 304, and a connecting frame 305. The pushing wheels 301 are rotatably connected to the rear side of the connecting plate 302. The front side of the connecting plate 302 is fixedly connected to the rear side of the telescopic end of the first electric telescopic rod 303. The front side of the first electric telescopic rod 303 is fixedly connected to the rear side of the fixing plate 304. The bottom of the fixing plate 304 is fixedly connected to the top of the connecting frame 305.

[0033] In this embodiment: Based on the pallet 1, the top fixing hole 10 stabilizes the pallet 1. During testing, the heavy stainless steel pipe body 4 is first rolled to the front of the ramp 2 on the front side of the pallet 1. The connecting frame 305 of the pushing mechanism 3 is pushed until it contacts the pallet 1. The ball bearings 23 and push rod 13 facilitate easy movement. Then, the limiting rod 11 limits the connecting frame 305 to the pallet 1. Next, the first electric telescopic rod 303 is extended, pushing the connecting plate 302 and the pushing wheel 301 to push the stainless steel pipe body 4 along the ramp 2 to the groove 7 of the pallet 1. The groove 7 is supported by the rotating support wheel 8. Then, the rotating rod 22 is rotated, causing the slide plate 903 to move forward along the slide rail 20, driving the first reduction motor 901 forward, allowing the rubber wheel 902 to contact the stainless steel pipe body 4. Then, the first reduction motor 901 is started to drive the stainless steel pipe body 4 to rotate. The rotation is adjusted according to the pipe diameter. By simultaneously controlling the extension and retraction of the second electric telescopic rod 5 and adjusting the height of the connecting rod 14, the visual inspection camera 6 is positioned appropriately. After connecting the visual inspection camera 6 to the external visual inspection system via an external connecting cable, the second reduction motor 19 is started, causing the lead screw 18 to drive the slider 17, the sliding sleeve 15, and the visual inspection camera 6 to move. Combined with the rotation of the stainless steel pipe body 4, comprehensive defect detection on the surface of the stainless steel pipe body 4 is achieved. When the stainless steel pipe body 4 is relatively thick and heavy, there is no need to manually move it to the inspection position, saving manpower and improving inspection efficiency. This solves the problem in existing patents where the rotating wheel is a certain height from the base plate, making it inconvenient to move the thick stainless steel pipe onto the rotating wheel, especially when performing surface defect detection on thicker stainless steel pipes, resulting in inconvenience for surface defect detection on thicker stainless steel pipes.

[0034] Specifically, such as Figure 2 and Figure 5 As shown, the drive mechanism 9 includes a first geared motor 901, a rubber wheel 902 and a slide plate 903. The bottom of the first geared motor 901 is fixedly connected to the top of the slide plate 903, the right side of the rubber wheel 902 is fixedly connected to the left side of the output shaft of the first geared motor 901, and the surface of the rubber wheel 902 is in contact with the surface of the stainless steel pipe body 4.

[0035] Specifically, such as Figure 5 As shown, slide rails 20 are fixedly connected to both sides of the top of the tray 1, and the slide plate 903 is slidably connected inside the slide rails 20.

[0036] Specifically, such as Figure 5 As shown, a fixing block 21 is fixedly connected to the rear side of the top of the tray 1. A rotating rod 22 is threadedly connected to the inside of the fixing block 21. The front side of the rotating rod 22 is rotatably connected to the rear side of the slide plate 903.

[0037] In this embodiment: the first reduction motor 901 in the drive mechanism 9 is fixed to the slide plate 903, the rubber wheel 902 is fixedly connected to the output shaft of the first reduction motor 901 and contacts the stainless steel pipe body 4, which can drive the stainless steel pipe body 4 to rotate on the surface of the support wheel 8. The slide rail 20 provides sliding guidance for the slide plate 903. The rotating rod 22 is threadedly connected to the fixed block 21 and rotatably connected to the slide plate 903. Rotating the rotating rod 22 can adjust the position of the slide plate 903, thereby adjusting the contact state between the rubber wheel 902 and the stainless steel pipe body 4, adapting to stainless steel pipe bodies 4 of different diameters, ensuring the stable rotation of the stainless steel pipe body 4, and providing stable circumferential motion conditions for the surface defect detection of the stainless steel pipe body 4.

[0038] Specifically, such as Figure 6 As shown, a ball bearing 23 is rotatably connected to the bottom of the connecting frame 305. The number of ball bearings 23 is several and they are evenly distributed at the bottom of the connecting frame 305. A push rod 13 is fixedly connected to the top of the connecting frame 305.

[0039] Specifically, such as Figure 2 and Figure 3 As shown, limit rods 11 are provided on both sides of the connecting frame 305. The side of the limit rod 11 closest to the connecting frame 305 passes through the connecting frame 305 and extends into the interior of the tray 1.

[0040] Specifically, such as Figure 3 As shown, a magnet 12 is fixedly connected to the surface of the limiting rod 11, and the surface of the magnet 12 is magnetically attracted to the surface of the connecting frame 305.

[0041] In this embodiment: the bottom ball bearing 23 of the connecting frame 305 can reduce its movement friction, the push rod 13 facilitates pushing the connecting frame 305, the limiting rod 11 passes through the connecting frame 305 and is inserted into the tray 1 to realize the connection between the connecting frame 305 and the tray 1, and the magnet 12 magnetically attracts the connecting frame 305 to prevent the limiting rod 11 from detaching from the tray 1, ensuring that the pushing mechanism 3 can stably push the stainless steel pipe body 4 backward, saving manpower.

[0042] Specifically, such as Figure 2 As shown, a groove 7 is provided on the top of the pallet 1, and a support wheel 8 is rotatably connected to the bottom of the inner wall of the groove 7. The surface of the support wheel 8 is in contact with the surface of the stainless steel pipe body 4.

[0043] Specifically, such as Figure 2 and Figure 4 As shown, a second electric telescopic rod 5 is fixedly connected to both sides of the top of the pallet 1, and a connecting rod 14 is fixedly connected between the top of the telescopic ends of the two second electric telescopic rods 5.

[0044] Specifically, such as Figure 4As shown, a second reduction motor 19 is fixedly connected to the left side of the top of the connecting rod 14, and a lead screw 18 is fixedly connected to the right side of the output shaft of the second reduction motor 19. A slider 17 is threaded onto the surface of the lead screw 18, and a sliding sleeve 15 is fixedly connected to the bottom of the slider 17. The top of the visual inspection camera 6 is fixedly connected to the bottom of the sliding sleeve 15. The sliding sleeve 15 is slidably fitted onto the surface of the connecting rod 14. A support block 16 is fixedly connected to the right side of the top of the connecting rod 14, and the right side of the lead screw 18 is rotatably connected to the left side of the support block 16.

[0045] In this embodiment: the support wheel 8 in the groove 7 supports the stainless steel pipe body 4, reducing the rotational friction of the stainless steel pipe body 4. By controlling the simultaneous extension and retraction of the extension ends of the two second electric telescopic rods 5, the height of the connecting rod 14 can be adjusted, thereby adjusting the height of the visual inspection camera 6 to adapt to stainless steel pipe bodies 4 of different diameters. The second reduction motor 19 drives the lead screw 18 to rotate, driving the slider 17, the sliding sleeve 15 and the visual inspection camera 6 to move. Combined with the rotation of the stainless steel pipe body 4, the visual inspection camera 6 can fully capture the surface image of the stainless steel pipe body 4, ensuring the comprehensiveness and accuracy of defect detection.

[0046] Working principle: First, the pallet 1 serves as the basic load-bearing structure. The fixing holes 10 at the four corners of the top of the pallet 1 allow for stable installation of the entire device on a level work surface. When inspecting a relatively heavy stainless steel pipe body 4, the stainless steel pipe body 4 can be rolled to the front of the ramp plate 2 fixedly connected to the front of the pallet 1. The inclined structure of the ramp plate 2 provides transition support for subsequently pushing the stainless steel pipe body 4. Next, the operator pushes the connecting frame 305 in the pushing mechanism 3 until its surface contacts the surface of the pallet 1. Because the bottom of the connecting frame 305 is rotatably connected with several evenly distributed ball bearings 23, the ball bearings 23 reduce friction between the connecting frame 305 and the ground, facilitating the pushing of the connecting frame 305. Simultaneously, the top of the connecting frame 305 is fixed... The fixed push rod 13 provides a force point for the pushing action, further improving operational convenience. Then, using the limiting rods 11 on both sides of the connecting frame 305, the side of the limiting rod 11 closest to the connecting frame 305 passes through the connecting frame 305 and extends into the tray 1, achieving initial positioning of the connecting frame 305 and the tray 1. The magnet 12 fixedly connected to the surface of the limiting rod 11 will magnetically attract the surface of the connecting frame 305, preventing the limiting rod 11 from detaching from the tray 1. Subsequently, the extension end of the first electric telescopic rod 303 fixedly connected to the front side of the fixed plate 304 in the control pushing mechanism 3 extends. The extension end of the first electric telescopic rod 303 pushes the connecting plate 302 fixedly connected to its front side backward, and the two push wheels 301 rotatably connected to the rear side of the connecting plate 302 also move backward. The pusher wheel 301 moves backward, and after contacting the stainless steel pipe body 4, it continues to push the stainless steel pipe body 4 backward, causing it to roll along the ramp 2 to the top of the support plate 1. It is then further pushed into the groove 7 opened at the top of the support plate 1. The surface of the support wheel 8, rotatably connected to the bottom of the inner wall of the groove 7, contacts the surface of the stainless steel pipe body 4. At this time, the stainless steel pipe body 4 is positioned between the tops of the front and rear support wheels 8. The support wheels 8 provide rotational support for the stainless steel pipe body 4, reducing frictional resistance during rotation. Next, the rotating rod 22, internally threaded and fixed to the fixing block 21 fixed to the rear top of the support plate 1, is rotated. Since the front of the rotating rod 22 is rotatably connected to the rear of the slide plate 903 in the drive mechanism 9,... Furthermore, the slide rails 20 fixedly connected to both sides of the top of the tray 1 guide the slide plate 903. When the rotating rod 22 rotates, it drives the slide plate 903 to slide forward along the inside of the slide rails 20. The first reduction motor 901 fixedly connected to the top of the slide plate 903 also moves forward until the surface of the rubber wheel 902 fixedly connected to the left side of the output shaft of the first reduction motor 901 is in close contact with the surface of the stainless steel pipe body 4. Then, the first reduction motor 901 is started, and the output shaft of the first reduction motor 901 drives the rubber wheel 902 to rotate. The friction between the rubber wheel 902 and the stainless steel pipe body 4 drives the stainless steel pipe body 4 to rotate on the top of the support wheel 8, realizing the circumferential rotation of the stainless steel pipe body 4, preparing for a comprehensive inspection of its surface defects. At the same time...The second electric telescopic rods 5, fixedly connected to both sides of the top of the pallet 1, can extend and retract simultaneously according to the diameter of the stainless steel pipe body 4, so that the visual inspection camera 6 below the connecting rod 14 is at a suitable inspection height. Then, the visual inspection camera 6 is connected to an external visual inspection system through an external connecting cable to ensure that the images captured by the visual inspection camera 6 can be transmitted to the external visual inspection system in real time for analysis and processing. Next, the second reduction motor 19, fixedly connected to the top left side of the connecting rod 14, is started, and the output shaft of the second reduction motor 19 drives the lead screw fixedly connected to its right side. When the lead screw 18 rotates, the support block 16, which is fixedly connected to the top right side of the connecting rod 14, rotates to the left side. The support block 16 provides stable support for the lead screw 18. The slider 17, threaded onto the surface of the lead screw 18, moves along the axial direction of the lead screw 18 as the lead screw 18 rotates clockwise or counterclockwise. The sliding sleeve 15, fixedly connected to the bottom of the slider 17, slides on the surface of the connecting rod 14. The connecting rod 14 guides the sliding sleeve 15, preventing it from rotating as the slider 17 moves. The top of the vision inspection camera 6 is fixedly connected to the bottom of the sliding sleeve 15, so the sliding sleeve 15 will drive the vision inspection camera 6 along the length of the connecting rod 14. By moving the stainless steel pipe body 4 and combining its own circumferential rotation, the visual inspection camera 6 can comprehensively acquire images of the surface of the stainless steel pipe body 4. After the acquired images are transmitted to the external visual inspection system, a comprehensive defect inspection of the surface of the stainless steel pipe body 4 can be completed. During the entire inspection process, the stainless steel pipe body 4 is pushed backward by the pushing mechanism 3. When the stainless steel pipe body 4 is relatively thick and heavy, it can be easily pushed to the accurate inspection position without manual handling, effectively saving labor costs and improving inspection efficiency. This solves the problem of the rotating wheel being at a certain height from the base plate in existing patents, especially in... When inspecting the surface defects of relatively thick stainless steel pipes, it is inconvenient to move the heavy pipes onto the rotating wheels, making the inspection of surface defects on thicker stainless steel pipes quite difficult. It should be noted that the first reduction motor 901, the second reduction motor 19, the first electric telescopic rod 303, the second electric telescopic rod 5, the visual inspection camera 6, and the visual inspection system are all existing, published, and mature technologies, and are powered by an external power supply and controlled by an external controller. Furthermore, any content not described in detail in this specification is prior art known to those skilled in the art and will not be elaborated upon here.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface defect detection device for stainless steel pipes, comprising a support plate (1) and a stainless steel pipe body (4), characterized in that: A ramp plate (2) is fixedly connected to the front side of the pallet (1), a visual inspection camera (6) is provided on the top of the stainless steel pipe body (4), a pushing mechanism (3) is provided on the front side of the pallet (1), a driving mechanism (9) is provided on the rear side of the top of the pallet (1), and fixing holes (10) are provided at the four corners of the top of the pallet (1). The pushing mechanism (3) includes two pushing wheels (301), a connecting plate (302), a first electric telescopic rod (303), a fixing plate (304), and a connecting frame (305). The pushing wheels (301) are rotatably connected to the rear side of the connecting plate (302). The front side of the connecting plate (302) is fixedly connected to the rear side of the telescopic end of the first electric telescopic rod (303). The front side of the first electric telescopic rod (303) is fixedly connected to the rear side of the fixing plate (304). The bottom of the fixing plate (304) is fixedly connected to the top of the connecting frame (305).

2. The stainless steel pipe surface defect detection device according to claim 1, characterized in that: The drive mechanism (9) includes a first geared motor (901), a rubber wheel (902) and a slide plate (903). The bottom of the first geared motor (901) is fixedly connected to the top of the slide plate (903). The right side of the rubber wheel (902) is fixedly connected to the left side of the output shaft of the first geared motor (901). The surface of the rubber wheel (902) is in contact with the surface of the stainless steel pipe body (4).

3. The stainless steel pipe surface defect detection device according to claim 2, characterized in that: The top two sides of the tray (1) are fixedly connected to slide rails (20), and the slide plate (903) is slidably connected inside the slide rails (20).

4. The stainless steel pipe surface defect detection device according to claim 2, characterized in that: A fixing block (21) is fixedly connected to the rear side of the top of the tray (1), and a rotating rod (22) is threadedly connected inside the fixing block (21). The front side of the rotating rod (22) is rotatably connected to the rear side of the slide plate (903).

5. The stainless steel pipe surface defect detection device according to claim 1, characterized in that: The bottom of the connecting frame (305) is rotatably connected to a ball bearing (23), and the ball bearing (23) is a number of balls evenly distributed at the bottom of the connecting frame (305). The top of the connecting frame (305) is fixedly connected to a push rod (13).

6. The stainless steel pipe surface defect detection device according to claim 1, characterized in that: Limiting rods (11) are provided on both sides of the connecting frame (305). The limiting rod (11) passes through the connecting frame (305) and extends into the interior of the tray (1) on the side closest to the connecting frame (305).

7. The stainless steel pipe surface defect detection device according to claim 6, characterized in that: A magnet (12) is fixedly connected to the surface of the limiting rod (11), and the surface of the magnet (12) is magnetically attracted to the surface of the connecting frame (305).

8. The stainless steel pipe surface defect detection device according to claim 1, characterized in that: The top of the pallet (1) is provided with a groove (7), and the bottom of the inner wall of the groove (7) is rotatably connected to a support wheel (8), the surface of the support wheel (8) is in contact with the surface of the stainless steel pipe body (4).

9. The stainless steel pipe surface defect detection device according to claim 1, characterized in that: The top of the pallet (1) is fixedly connected to two sides of the top of the second electric telescopic rod (5), and a connecting rod (14) is fixedly connected between the top of the telescopic ends of the two second electric telescopic rods (5).

10. A surface defect detection device for stainless steel pipes according to claim 9, characterized in that: A second reduction motor (19) is fixedly connected to the left side of the top of the connecting rod (14). A lead screw (18) is fixedly connected to the right side of the output shaft of the second reduction motor (19). A slider (17) is threaded onto the surface of the lead screw (18). A sliding sleeve (15) is fixedly connected to the bottom of the slider (17). The top of the visual inspection camera (6) is fixedly connected to the bottom of the sliding sleeve (15). The sliding sleeve (15) is slidably fitted onto the surface of the connecting rod (14). A support block (16) is fixedly connected to the right side of the top of the connecting rod (14). The right side of the lead screw (18) is rotatably connected to the left side of the support block (16).

Images