Surface defect sorting device for metal corrugated pipe compensator

Abstract

The invention discloses a metal bellows compensator surface defect sorting device, and relates to the technical field of metal bellows compensator surface detection. The device specifically comprises a base, a driving mechanism is arranged on one side of the top of the base, the driving end of the driving mechanism is fixedly connected with a swing mechanism, and one end of the swing mechanism is fixedly connected with a moving mechanism; a mounting ring is fixedly mounted at the top of the side, close to the moving mechanism, of the base, a linkage assembly is rotationally connected to the inner side of the mounting ring and fixedly connected with the output end of the swing mechanism, a detection mechanism is arranged on the back face of the linkage assembly, and a first triangular support is fixedly mounted at the top of the side, away from the driving mechanism, of the base. Two sets of fixing mechanisms are arranged on one side of the top of the first triangular support. The problem that a detection device is not easy to install due to the fact that a traditional device structure occupies a large space is solved, the surface defect detection quality of the metal corrugated pipe is improved, and efficient sorting of the metal corrugated pipe is promoted.

Description

Technical Field

[0001] This invention relates to the field of surface inspection technology for metal bellows compensators, and in particular to a surface defect sorting device for metal bellows compensators. Background Technology

[0002] Metal bellows compensators, as key flexible connections and safety components in modern industrial pipeline systems, are widely used in petrochemical, heating, aerospace, and nuclear power industries. Their core function is to absorb displacement and deformation caused by thermal expansion and contraction, vibration, or installation errors, thereby ensuring the long-term safe and stable operation of the pipeline system. Bellows are typically made from multiple layers of thin-walled metal (such as stainless steel) through precision hydraulic or roll forming. Their performance and reliability directly depend on the integrity of the material and the defect-free state of the structure.

[0003] A search revealed a utility model patent with Chinese patent publication number CN221612361U, which discloses an auxiliary device for testing corrugated compensators, relating to the field of corrugated compensators. The device includes a base and a fixing mechanism. A slide rail and a slot are provided at the upper end of the base. An operating plate is mounted on the upper end of the slide rail, and a fixing groove is provided on the outer wall of the operating plate. This utility model, through its operating plate, stabilizing frame, and fixing mechanism, allows for adjustment of the clamping plate distance via an adjusting rod, and further adjustment of the operating plate's vertical distance via a telescopic rod. It can accommodate corrugated compensators of varying widths for clamping and fixing, facilitating auxiliary testing. The device comprises a base, slide rail, slot, operating plate, and latches. However, the aforementioned auxiliary device for testing corrugated compensators has the following shortcomings: Although the above-mentioned device can adjust the distance of the operating plate back and forth through the slide rail installed in the device, and can fix the operating plate through the installed buckle, and can be adapted to the placement of corrugated compensators of different lengths, the overall structure occupies a lot of space, which is not conducive to the installation of the corrugated compensator detection device, and is prone to the problem of incomplete detection. Therefore, there is an urgent need for a surface defect sorting device for metal corrugated pipe compensators. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the large space occupied by the structure leading to difficulties in installing the detection device and incomplete detection, by proposing a surface defect sorting device for metal bellows compensators.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A surface defect sorting device for a metal bellows compensator includes a base, a driving mechanism is provided on one side of the top of the base, and a swing mechanism is fixedly connected to the driving end of the driving mechanism, and a moving mechanism is fixedly connected to one end of the swing mechanism. A mounting ring is fixedly installed on the top of the base near the moving mechanism. A linkage component is rotatably connected to the inner side of the mounting ring. The linkage component is fixedly connected to the output end of the swing mechanism. A detection mechanism is provided on the back of the linkage component. A triangular bracket is fixedly installed on the top of the base away from the drive mechanism. Two sets of fixing mechanisms are provided on the top side of the triangular bracket.

[0006] Preferably, the driving mechanism includes a second triangular bracket, which is fixedly connected to the top side of the base. A servo motor is fixedly connected to the top of the base near the second triangular bracket. A rotating hole is opened on the top side of the second triangular bracket, and a guide shaft is rotatably connected inside the rotating hole.

[0007] Furthermore: transmission wheels are fixedly connected to the circumference of the guide shaft and the circumference of the output shaft of the servo motor, and transmission belts are sleeved on the circumferences of the two transmission wheels, and a telescopic bracket is fixedly installed on the top outer wall of the triangular bracket two.

[0008] Based on the aforementioned scheme: the swing mechanism includes universal joint one and universal joint two, with one end of universal joint two fixedly connected to one end of the guide shaft, and one end of universal joint one connected to the other end of the guide shaft through a connecting shaft.

[0009] A preferred embodiment of the aforementioned scheme is: the moving mechanism includes a base plate, which is fixedly connected to the top middle side of the base. Two sliding rods are fixedly installed on both sides of the top of the base plate, and the two sliding rods are circumferentially slidably connected to the same sliding sleeve. The top ends of the two sliding rods are fixedly connected to a top plate.

[0010] As a further embodiment of the present invention: the linkage component includes a turntable, a partial bidirectional gear mounting hole and a linkage gear, and the turntable is rotatably connected to the inner ring of the mounting ring. A detection hole is provided in the center of the turntable. The partial bidirectional gear is fixedly connected to one side of the turntable, and three mounting holes are provided on one side of the partial bidirectional gear. The linkage gear is fixedly connected to one end of the universal shaft, and the linkage gear and the partial bidirectional gear are meshed and matched. One end of the universal shaft passes through the middle of the sliding sleeve.

[0011] Meanwhile, the detection mechanism includes a ring frame, a laser 3D scanner, a mounting plate, and a stabilizing ring. One end of each mounting plate is connected to the back of the turntable via a mounting shaft, and the ring frame is fixedly connected to the other end of the mounting plate via the stabilizing ring. Each pair of laser 3D scanners is symmetrically fixedly mounted on both sides of the circumference of the ring frame.

[0012] As a preferred embodiment of the present invention: the fixing mechanism includes a lead screw, and a fixed shaft is fixedly installed on one side of the triangular bracket, the lead screw is sleeved on the circumference of the fixed shaft, a torsion ring is fixedly connected to the circumference of the end of the lead screw, a triangular plate is rotatably connected to one end of the lead screw, and a triangular plate is rotatably connected to the other end of the lead screw.

[0013] Meanwhile, a triangular slider is threadedly connected to the circumference of the lead screw, and three guide rods are rotatably connected to the three sides of the triangular slider. A rocker arm is rotatably connected to the end of the guide rod, and a friction ring is fixedly connected to the end of the rocker arm. The end of the rocker arm away from the friction ring is rotatably connected to the triangular plate two.

[0014] As a preferred embodiment of the present invention: the triangles of triangle plate one, triangle plate two and triangle slider are connected by connecting rods, and the two opposite triangle plates two are connected by connecting rods. The magnetic ring is fixedly connected to the end of the fixed shaft near the drive mechanism, and the magnetic ring is mutually attracted and adapted to the top of the telescopic bracket.

[0015] The beneficial effects of this invention are as follows: 1. This metal bellows compensator surface defect sorting device, during operation, a servo motor starts, driving the guide shaft to rotate via a transmission wheel and belt. The rotating guide shaft drives the universal joint two to rotate, which in turn pulls the universal joint one connected to its end to swing. The swinging universal joint one then drives the sliding sleeve fixed at one end to move vertically back and forth along the surface of two sliding rods. During this process, the linkage gear mounted at the other end of the universal joint one rotates accordingly, driving the incomplete bidirectional gear meshing with it to rotate. Due to the vertical reciprocating motion of the sliding sleeve, the linkage gear alternately meshes with the inner and outer teeth of the incomplete bidirectional gear during rotation, thereby driving the turntable to perform intermittent forward and reverse rotation. Two laser 3D scanners symmetrically distributed on the annular bracket on the back of the turntable are used to scan the surface of the turntable. Driven by intermittent rotation, the outer surface of the metal bellows compensator, located at the detection hole in the center of the turntable, can be laser-scanned from all directions and multiple angles. This structure integrates the drive, transmission, and scanning mechanisms into a compact rotary intermittent motion system. While achieving full circumferential coverage detection of the compensator, it significantly reduces the space occupied by traditional multi-axis motion mechanisms. This solves the problem that the detection device is difficult to install and lay out in the production line or laboratory due to its large structure. At the same time, based on the stable scanning path brought by intermittent motion and the data integrity of synchronous acquisition by dual scanners, it significantly improves the identification accuracy and detection consistency of defects such as cracks, pits, and deformations on the surface of the metal bellows compensator, thereby effectively promoting the online efficient detection and quality sorting of metal bellows compensators.

[0016] 2. This is a surface defect sorting device for metal bellows compensators. The operator horizontally inserts the metal bellows compensator to be inspected into the device from one side of the magnetic ring. Then, the operator synchronously rotates the torsion rings located at both ends of the device. The rotating torsion rings drive the meshing lead screw to rotate. The rotation of the lead screw causes multiple triangular sliders evenly distributed on its circumference to move radially inward horizontally. The moving triangular sliders push the guide rod hinged to them to swing outward, thereby opening the tail end of the swing rod outward. This causes the adaptive friction ring fixed at the end of the swing rod to tightly press against the inner wall of the metal bellows compensator, achieving stable sorting of compensators of different diameters. With non-destructive internal support fixation, after fixation is completed, the operator can drive the entire clamping mechanism and compensator to move smoothly in the horizontal direction by sliding the fixed shaft passing through the center of the lead screw along the axial direction, thereby accurately delivering the section to be tested to the inspection station. This structure can simultaneously achieve adaptive adjustment of the inner diameter and multi-point synchronous clamping through a single operation (rotating the torsion ring). It can not only reliably adapt to metal bellows compensators of various diameters to meet their surface inspection and sorting needs, but also provide a stable and adjustable internal support benchmark to provide accurate positioning for subsequent laser scanning or visual inspection, effectively playing a core role in auxiliary inspection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a surface defect sorting device for a metal bellows compensator proposed in this invention; Figure 2 This is a schematic diagram of the back structure of a surface defect sorting device for a metal bellows compensator proposed in this invention; Figure 3 This is a schematic diagram of the test structure of a surface defect sorting device for a metal bellows compensator proposed in this invention; Figure 4 This is a schematic diagram of the drive mechanism in a surface defect sorting device for a metal bellows compensator proposed in this invention. Figure 5 This is a schematic diagram of the detection mechanism in a surface defect sorting device for a metal bellows compensator proposed in this invention; Figure 6 This is a schematic diagram of the linkage component in a surface defect sorting device for a metal bellows compensator proposed in this invention. Figure 7 This is a schematic diagram of the fixing mechanism in a surface defect sorting device for a metal bellows compensator proposed in this invention. Figure 8 This is a partial structural diagram of the fixing mechanism in a surface defect sorting device for a metal bellows compensator proposed in this invention.

[0018] In the diagram: 1. Base; 2. Drive mechanism; 3. Swing mechanism; 4. Moving mechanism; 5. Fixing mechanism; 6. Mounting ring; 7. Linkage assembly; 8. Detection mechanism; 9. Triangular bracket one; 10. Telescopic bracket; 201. Transmission belt; 202. Guide shaft; 203. Servo motor; 204. Triangular bracket two; 301. Universal shaft one; 302. Universal shaft two; 401. Top plate; 402. Slide rod; 403. Sliding sleeve; 404. Base plate 501. Magnetic ring; 502. Swing rod; 503. Friction ring; 504. Connecting rod; 505. Lead screw; 506. Torsion ring; 507. Triangle plate one; 508. Triangle plate two; 509. Guide rod; 510. Triangular slider; 701. Turntable; 702. Incomplete bidirectional gear; 703. Mounting hole; 704. Linkage gear; 801. Ring frame; 802. Laser 3D scanner; 803. Mounting plate; 804. Stabilizing ring. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] A surface defect sorting device for metal bellows compensators, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the device includes a base 1, a drive mechanism 2 is provided on one side of the top of the base 1, and a swing mechanism 3 is fixedly connected to the drive end of the drive mechanism 2. A moving mechanism 4 is fixedly connected to one end of the swing mechanism 3. An installation ring 6 is fixedly installed on the top of the base 1 on the side close to the moving mechanism 4. A linkage component 7 is rotatably connected to the inner side of the installation ring 6. The linkage component 7 is fixedly connected to the output end of the swing mechanism 3. A detection mechanism 8 is provided on the back of the linkage component 7. A triangular bracket 9 is fixedly installed on the top of the base 1 on the side away from the drive mechanism 2, and two sets of fixing mechanisms 5 are provided on one side of the top of the triangular bracket 9.

[0024] To facilitate comprehensive testing of metal bellows compensators by testing agencies; such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the drive mechanism 2 includes a transmission belt 201, a guide shaft 202, a servo motor 203, and a second triangular bracket 204. The second triangular bracket 204 is fixedly connected to the top side of the base 1, and the servo motor 203 is fixedly connected to the top side of the base 1 near the second triangular bracket 204. A rotating hole is opened on the top side of the second triangular bracket 204, and the guide shaft 202 is rotatably connected in the rotating hole. Transmission wheels are fixedly connected to the circumference of the guide shaft 202 and the circumference of the output shaft of the servo motor 203, respectively. The transmission belt 201 is sleeved on the circumference of the two transmission wheels, and a telescopic bracket 10 is fixedly installed on the top outer wall of the second triangular bracket 204. The swing mechanism 3 includes a first universal joint 301 and a second universal joint 302, with one end of the second universal joint 302 fixedly connected to one end of the guide shaft 202, and one end of the first universal joint 301 connected to the other end of the guide shaft 202 through a connecting shaft. The moving mechanism 4 includes a top plate 401, a sliding rod 402, a sliding sleeve 403, and a bottom plate 404. The bottom plate 404 is fixedly connected to the top middle side of the base 1. The two sliding rods 402 are fixedly installed on the top two sides of the bottom plate 404. The two ends of the sliding sleeve 403 are slidably connected to the circumference of the two sliding rods 402 respectively. The top plate 401 is fixedly connected to the top of the two sliding rods 402. The linkage component 7 includes a turntable 701, a mounting hole 703 for an incomplete bidirectional gear 702, and a linkage gear 704. The turntable 701 is rotatably connected to the inner ring of the mounting ring 6. A detection hole is provided in the center of the turntable 701. The incomplete bidirectional gear 702 is fixedly connected to one side of the turntable 701, and three mounting holes 703 are provided on one side of the incomplete bidirectional gear 702. The linkage gear 704 is fixedly connected to one end of the universal joint 301, and the linkage gear 704 meshes with the incomplete bidirectional gear 702. One end of the universal joint 301 passes through the middle of the sliding sleeve 403. The detection mechanism 8 includes a ring frame 801, a laser 3D scanner 802, a mounting plate 803, and a retaining ring 804. One end of each mounting plate 803 is connected to the back of the turntable 701 via a mounting shaft. The ring frame 801 is fixedly connected to the other end of the mounting plate 803 via the retaining ring 804. Two laser 3D scanners 802 are symmetrically fixedly installed on both sides of the circumference of the ring frame 801. The laser 3D scanner 802 is a KSCAN 20 model.

[0025] During operation, the servo motor 203 is started, driving the guide shaft 202 to rotate via the transmission wheel and transmission belt 201. The rotating guide shaft 202 drives the universal joint 302 to rotate, which in turn pulls the universal joint 301 at its end to swing. The swinging universal joint 301 drives the sliding sleeve 403 at one end to move vertically up and down on the surfaces of the two sliding rods 402. During this time, the linkage gear 704 at the end of the universal joint 301 rotates, driving the incomplete bidirectional gear 702 to rotate. During this period, the sliding sleeve 403 moves vertically up and down on the surfaces of the two sliding rods 402. The vertical reciprocating sliding mechanism allows the linkage gear 704 to engage with the internal and external teeth of the incomplete bidirectional gear 702 during rotation, promoting intermittent forward and reverse rotation of the turntable 701. The symmetrical laser 3D scanner 802 on the annular frame 801 on the back of the turntable 701 can effectively perform all-round laser surface inspection of the metal bellows compensator located in the central inspection hole of the turntable 701. This not only solves the problem of traditional devices occupying too much space and making the inspection device difficult to install, but also improves the quality of surface defect detection of metal bellows and promotes efficient sorting of metal bellows.

[0026] To meet the surface inspection requirements of metal bellows compensators of different diameters; such as Figure 7 and Figure 8As shown, the fixing mechanism 5 includes a magnetic ring 501, a swing rod 502, a friction ring 503, a connecting rod 504, a lead screw 505, a torsion ring 506, a first triangular plate 507, a second triangular plate 508, a guide rod 509, and a triangular slider 510. A fixed shaft is fixedly installed on one side of the first triangular bracket 9. The lead screw 505 is sleeved on the circumference of the fixed shaft, and the torsion ring 506 is fixedly connected to the circumference of the end of the lead screw 505. The first triangular plate 507 is rotatably connected to one end of the lead screw 505, the second triangular plate 508 is rotatably connected to the other end of the lead screw 505, and the triangular slider 510 is threadedly connected to the circumference of the lead screw 505. Three guide rods... 509 is rotatably connected to the three sides of the triangular slider 510. Each swing rod 502 is rotatably connected to the end of the guide rod 509, and the friction ring 503 is fixedly connected to the end of the swing rod 502. The end of the swing rod 502 away from the friction ring 503 is rotatably connected to the triangle of the second triangle plate 508. The triangles of the first triangle plate 507, the second triangle plate 508 and the triangle of the triangular slider 510 are connected by the connecting rod 504, and the two opposite triangle plates 508 are connected by the connecting rod 504. The magnetic ring 501 is fixedly connected to the end of the fixed shaft near the drive mechanism 2, and the magnetic ring 501 is mutually attracted and adapted to the top of the telescopic bracket 10. During operation, the metal threaded compensator is slipped onto the magnetic ring 501 from one side, and the torsion rings 506 located on the inner sides of both ends are rotated simultaneously. The rotating torsion rings 506 drive the lead screw 505 to rotate, and the rotating lead screw 505 drives the triangular slider 510 on its circumference to move horizontally. The moving triangular slider 510 drives the guide rod 509 to swing and push the swing rod 502 outward. The friction ring 503 at the tail end of the pushed swing rod 502 effectively fixes the inner side of the metal bellows compensator. At the same time, the horizontal movement of the metal bellows compensator can be achieved by sliding the fixed shaft inside the lead screw 505. Thus, it not only meets the surface inspection and sorting requirements of metal bellows compensators of different diameters, but also plays an effective auxiliary inspection role.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A surface defect sorting device for a metal bellows compensator, comprising a base (1), characterized in that, A drive mechanism (2) is provided on one side of the top of the base (1), and a swing mechanism (3) is fixedly connected to the drive end of the drive mechanism (2), and a moving mechanism (4) is fixedly connected to one end of the swing mechanism (3). A mounting ring (6) is fixedly installed on the top of the side of the base (1) near the moving mechanism (4). A linkage component (7) is rotatably connected to the inner side of the mounting ring (6). The linkage component (7) is fixedly connected to the output end of the swing mechanism (3). A detection mechanism (8) is provided on the back of the linkage component (7). A triangular bracket (9) is fixedly installed on the top of the side of the base (1) away from the driving mechanism (2). Two sets of fixing mechanisms (5) are provided on the top side of the triangular bracket (9).

2. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The drive mechanism (2) includes a second triangular bracket (204), which is fixedly connected to the top side of the base (1). A servo motor (203) is fixedly connected to the top side of the base (1) near the second triangular bracket (204). A rotating hole is opened on the top side of the second triangular bracket (204), and a guide shaft (202) is rotatably connected in the rotating hole.

3. The surface defect sorting device for a metal bellows compensator according to claim 2, characterized in that, The circumference of the guide shaft (202) and the circumference of the output shaft of the servo motor (203) are respectively fixedly connected to the transmission wheel, and the circumference of the two transmission wheels is fitted with a transmission belt (201), and the top outer wall of the triangular bracket (204) is fixedly installed with a telescopic bracket (10).

4. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The swing mechanism (3) includes a universal joint one (301) and a universal joint two (302), with one end of the universal joint two (302) fixedly connected to one end of the guide shaft (202), and one end of the universal joint one (301) connected to the other end of the guide shaft (202) through a connecting shaft.

5. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The moving mechanism (4) includes a base plate (404), which is fixedly connected to the top middle side of the base (1). Two slide rods (402) are fixedly installed on the top two sides of the base plate (404), and the two slide rods (402) are circumferentially slidably connected to the same slide sleeve (403). The top ends of the two slide rods (402) are fixedly connected to a top plate (401).

6. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The linkage component (7) includes a turntable (701), a mounting hole (703) for an incomplete bidirectional gear (702), and a linkage gear (704). The turntable (701) is rotatably connected to the inner ring of the mounting ring (6). A detection hole is provided in the center of the turntable (701). The incomplete bidirectional gear (702) is fixedly connected to one side of the turntable (701). Three mounting holes (703) are provided on one side of the incomplete bidirectional gear (702). The linkage gear (704) is fixedly connected to one end of the universal shaft (301). The linkage gear (704) meshes with the incomplete bidirectional gear (702). One end of the universal shaft (301) passes through the middle of the sliding sleeve (403).

7. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The detection mechanism (8) includes a ring frame (801), a laser 3D scanner (802), a mounting plate (803), and a stabilizing ring (804). One end of the two mounting plates (803) is connected to the back of the turntable (701) through a mounting shaft. The ring frame (801) is fixedly connected to the other end of the mounting plate (803) through the stabilizing ring (804). Two laser 3D scanners (802) are symmetrically fixedly installed on both sides of the circumference of the ring frame (801).

8. The surface defect sorting device for a metal bellows compensator according to claim 1, characterized in that, The fixing mechanism (5) includes a lead screw (505), and a fixed shaft is fixedly installed on one side of the triangular bracket (9). The lead screw (505) is sleeved on the circumference of the fixed shaft. A torsion ring (506) is fixedly connected to the circumference of the end of the lead screw (505). A triangular plate (507) is rotatably connected to one end of the lead screw (505), and a triangular plate (508) is rotatably connected to the other end of the lead screw (505).

9. A surface defect sorting device for a metal bellows compensator according to claim 8, characterized in that, The lead screw (505) is connected to a triangular slider (510) by a thread on its circumference. Three guide rods (509) are rotatably connected to the three sides of the triangular slider (510). A rocker arm (502) is rotatably connected to the end of the guide rod (509), and a friction ring (503) is fixedly connected to the end of the rocker arm (502). The end of the rocker arm (502) away from the friction ring (503) is rotatably connected to the triangular plate (508).

10. A surface defect sorting device for a metal bellows compensator according to claim 8, characterized in that, The triangles of triangle plate one (507), triangle plate two (508) and triangle slider (510) are connected by connecting rod (504), and the two opposite triangle plates two (508) are connected by connecting rod (504). The magnetic ring (501) is fixedly connected to the end of the fixed shaft near the drive mechanism (2), and the magnetic ring (501) is mutually attracted and adapted to the top of the telescopic bracket (10).

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