Pipeline surface flaw detection machine capable of achieving multi-angle observation

Abstract

The invention is applied to the technical field of pipeline detection, and particularly discloses a multi-angle observation pipeline surface flaw detection machine which comprises an upper supporting ring, the upper supporting ring is of a semicircular ring structure, one end of the upper supporting ring is rotationally connected with a lower supporting ring, and the lower supporting ring is of a semicircular ring structure. The upper supporting ring and the lower supporting ring form a complete circular ring structure, a plurality of pulleys are arranged on the inner wall of the upper supporting ring and the inner wall of the lower supporting ring respectively, and driving mechanisms are arranged in the pulleys to achieve remote control. According to the pipeline surface flaw detection machine capable of achieving multi-angle observation, the upper supporting ring and the lower supporting ring are arranged, the surface of the upper supporting ring and the surface of the lower supporting ring are connected with the upper track and the lower track correspondingly, the supporting ring and the track which are opened in a rotating mode can rapidly sleeve the surface of a to-be-detected pipeline, and a remotely-driven pulley is matched; therefore, the device automatically walks on the outer surface of the pipeline, and flaws on the outer surface of the pipeline are quickly and visually detected.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection, in particular to a pipeline surface defect detection machine capable of multi-angle observation. Background Art

[0002] A pipeline is a tubular device used to transport fluids from one location to another. It is widely used in many fields such as industry, civil, and municipal administration. In order to ensure the safety of pipelines during use, the pipelines need to be inspected for surface defects before they are put into use to ensure their performance.

[0003] Defect detection on the pipeline surface usually uses visual inspection, that is, using artificial vision or machine vision to capture images of the pipeline surface, so as to detect tiny defects on the pipeline surface. The current machine vision inspection process for pipelines is to carry a shooting device on a device moving on the pipeline surface, but the current shooting and carrying equipment is large and integrated. Therefore, at the bends of the pipeline, the integrated device cannot turn flexibly, affecting the device's shooting process of the pipeline surface. Summary of the invention

[0004] The object of the present invention is to provide a pipeline surface defect detection machine capable of multi-angle observation, so as to solve the problem in the above background technology that the pipeline surface detection equipment is large in size and difficult to flexibly turn at the bend of the pipeline.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipeline surface defect detection machine capable of multi-angle observation, comprising an upper support ring, the upper support ring being a semicircular ring structure, one end of the upper support ring being rotatably connected to a lower support ring, the lower support ring being a semicircular ring structure, the upper support ring and the lower support ring forming a complete circular ring structure, the inner walls of the upper support ring and the lower support ring being respectively provided with a plurality of pulleys, the pulleys having a built-in driving mechanism for realizing remote control, an upper rail being provided on one side of the upper support ring, the upper rail being a semicircular ring structure, one end of the upper rail being rotatably connected to a lower rail, the lower rail being a semicircular ring structure, the upper rail and the lower rail together forming a circular ring structure, a No. 1 magnetic block being fixedly installed at the other end of the lower rail, a No. 2 magnetic block being provided above the No. 1 magnetic block, the No. 2 magnetic block being fixedly installed at one end of the upper rail, and the magnetic poles of the No. 1 magnetic block and the No. 2 magnetic block being adsorbed and connected The upper and lower rails are connected to each other with a plurality of wheels, and the upper and lower rails are connected with each other with a plurality of wheels, and the plurality of wheels are connected with each other with a plurality of wheels respectively. Preferably, the two groups of supporting structures are connected by a connecting piece, and the connecting piece is a three-section sleeve connecting structure. The connecting part of the connecting piece is a circular ring connected by a long rod, and the two ends of the connecting piece are respectively sleeve-connected to the side surfaces of the two supporting structures. A plurality of the connecting pieces respectively connect the two upper supporting rings and the two lower supporting rings.

[0006] By adopting the above technical solution, the device can be quickly connected to the outer surface of the pipeline using the supporting structure.

[0007] Preferably, a through groove is provided on the upper surface of the movable end of the lower support ring, and the groove on the surface of the lower support ring is snap-connected with the movable end of the upper support ring. The movable end of the upper support ring can be squeezed and deformed, and a connecting structure is provided on the surfaces of the upper support ring and the lower support ring, which can realize the snap-connection between the upper support ring and the lower support ring.

[0008] By adopting the above technical solution, the upper support ring and the lower support ring can be connected by using the connection structure.

[0009] Preferably, the connecting structure includes a card slot, which is an L-shaped structure, and the card slot is arranged on the inner wall of the groove on the surface of the lower support ring. One end of the card slot passes through the surface of the lower support ring, and the interior of the card slot is engaged and connected with a card block, and the card block is fixedly installed on the side surface of the upper support ring. A reinforcement structure is arranged in the groove on the surface of the lower support ring, and the reinforcement structure can realize the reinforcement of the connection process between the upper support ring and the lower support ring.

[0010] By adopting the above technical solution, the connection process between the upper support ring and the lower support ring can be further reinforced by using the reinforcement structure.

[0011] Preferably, the reinforcement structure includes an airbag, which is embedded and fixed in the bottom surface of the groove of the lower support ring, and the surface of the airbag is deformable. The lower end of the airbag is connected with a connecting tube, and the connecting tube is embedded and fixed in the interior of the lower support ring. The other end of the connecting tube passes through the inner surface of the lower support ring, and this end of the connecting tube is open. A limit block with a protruding structure is provided on the inner wall of the open end of the connecting tube, and a piston is slidably installed on the inner wall of the connecting tube, and the piston is fixedly connected to a push block through a connecting rod.

[0012] By adopting the above technical solution, the connection process between the upper support ring and the lower support ring can be reinforced by utilizing the expansion of the airbag.

[0013] Preferably, a support structure is provided on the inner surface of the upper track and the lower track, and the support structure can ensure the stability of the upper track and the lower track on the pipeline surface during use of the device.

[0014] By adopting the above technical solution, the stability of the upper track and the lower track can be ensured by utilizing the supporting structure.

[0015] Preferably, the supporting structure includes a supporting block, which is an arc-shaped structure, a telescopic rod is connected to one side surface of the supporting block, the other end of the telescopic rod is fixedly mounted on the inner surface of the upper track or the lower track, a spring is provided on the outer surface of the telescopic rod, one end of the spring is connected to the surface of the supporting block, and the other end of the spring is fixedly connected to the inner surface of the upper track or the lower track.

[0016] By adopting the above technical solution, the upper rail and the lower rail can be supported by utilizing the contact between the support block and the pipe surface.

[0017] Preferably, a cleaning structure is arranged on the surface of another group of the support structures, and the cleaning structure can realize a cleaning process of the pipeline surface before detection, thereby improving the accuracy of visual detection.

[0018] By adopting the above technical solution, the cleaning structure can be used to clean the pipeline surface, thereby improving the accuracy of the visual inspection process.

[0019] Preferably, the cleaning structure includes a second slider, the second slider has the same structure as the first slider, the second slider is slidably mounted on the surfaces of the upper rail and the lower rail, the surface of the second slider is provided with a plurality of pulleys, the pulleys there are in contact with the slide grooves on the surfaces of the upper rail and the lower rail, the pulley has a built-in control structure to realize remote control, a cleaning block is fixedly mounted on the lower surface of the second slider, the cleaning block is an arc-shaped structure, and the surface of the cleaning block is compressed, a guide block is fixedly mounted on the side surface of the cleaning block, the guide block is an arc-shaped structure, arc-shaped ventilation holes are penetrated at both ends of the guide block, an arc-shaped air outlet is penetrated on the lower surface of the guide block, and the air outlet on the lower surface of the guide block is connected with the arc-shaped ventilation holes inside the guide block.

[0020] By adopting the above technical solution, the cleaning block can clean the surface of the pipeline by utilizing the movement of the second slider.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the pipeline surface defect detection machine capable of multi-angle observation: 1. The present invention is provided with an upper support ring and a lower support ring, the surfaces of which are connected to an upper track and a lower track respectively. The support ring and the track are rotated to open so that the device can be quickly placed on the surface of the pipeline to be inspected. With the remote-driven pulley, the device can move on the outer surface of the pipeline by itself, and the defects on the outer surface of the pipeline can be quickly visually inspected; Furthermore, a card block is provided on the surface of the upper support ring and is engaged with a card groove on the surface of the lower support ring to preliminarily connect the upper support ring and the lower support ring. After the lower support ring is sleeved onto the surface of the pipeline, a push block provided on the inner surface of the lower support ring drives the piston inside the connecting pipe to slide under the force of the pipeline surface, and squeezes the air in the connecting pipe into the airbag. The airbag expands and bulges between the upper support ring and the lower support ring, and the fixation between the upper support ring and the lower support ring is further strengthened. Furthermore, the upper track and the lower track move synchronously with the upper support ring and the lower support ring, and the mutual adsorption between the No. 2 magnetic block on the surface of the upper track and the No. 1 magnetic block on the surface of the lower track is used to form a complete circular track between the upper track and the lower track, so that the No. 1 slider equipped with a camera can slide in a circular track on the surface of the circular upper track and the lower track, and perform multi-angle visual inspection on the pipeline surface; 2. In the present invention, two groups of support structures composed of an upper support ring and a lower support ring are symmetrically arranged, and the two groups of support structures are connected by a connector. The three-section connector can make the support structures on both sides turn flexibly, so that when the device moves at the turning point of the pipeline, the support structures on both sides can turn to the turning point in turn, avoiding the visual detection blind spot caused by the integrated detection device at the turning point of the pipeline; Furthermore, a No. 2 slider is provided on the surface of one of the supporting structures, and a cleaning block is provided on the lower surface of the No. 2 slider. Before the camera performs shooting inspection, the surface of the pipe is cleaned to improve the efficiency of visual inspection, and a guide block is provided on the side surface of the cleaning block. When the No. 2 slider is driven to rotate, the airflow flows to the surface of the pipe through the ventilation holes on the surface of the guide block, and the surface of the pipe is further cleaned by the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the present invention and the pipeline connection structure; Figure 4 This is a schematic diagram of the front view structure of the support structure of the present invention; Figure 5 This is a schematic diagram of the support structure of the present invention; Figure 6 This is a schematic diagram of the front cross-section structure of the lower support ring of the present invention; Figure 7 For the present invention Figure 6 The enlarged cross-sectional structure diagram at A in the middle; Figure 8 This is a schematic diagram of the connection structure between the camera and the supporting structure of the present invention; Fig. 9 This is a schematic diagram of the cleaning block and the second sliding block of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the guide block of the present invention.

[0023] In the figure: 1. upper support ring; 2. lower support ring; 3. upper track; 4. lower track; 5. magnetic block No. 1; 6. magnetic block No. 2; 7. slider No. 1; 8. camera; 9. pulley; 10. connector; 11. slot; 12. block; 13. airbag; 14. connecting pipe; 15. piston; 16. push block; 17. support block; 18. telescopic rod; 19. spring; 20. slider No. 2; 21. cleaning block; 22. guide block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 10The present invention provides a technical solution: a pipeline surface defect detection machine capable of multi-angle observation, comprising an upper support ring 1, a lower support ring 2, an upper track 3, a lower track 4, a first magnetic block 5, a second magnetic block 6, a first slider 7, a camera 8, a pulley 9, a connector 10, a slot 11, a block 12, an airbag 13, a connecting pipe 14, a piston 15, a push block 16, a support block 17, a telescopic rod 18, a spring 19, a second slider 20, a cleaning block 21, and a guide block 22.

[0026] The upper support ring 1 is a semicircular ring structure, one end of the upper support ring 1 is rotatably connected to the lower support ring 2, the lower support ring 2 is a semicircular ring structure, the upper support ring 1 and the lower support ring 2 constitute a complete circular ring structure, the inner walls of the upper support ring 1 and the lower support ring 2 are respectively provided with a plurality of pulleys 9, the pulleys 9 have a built-in driving mechanism to realize remote control, one side of the upper support ring 1 is provided with an upper track 3, the upper track 3 is a semicircular ring structure, one end of the upper track 3 is rotatably connected to the lower track 4, the lower track 4 is a semicircular ring structure, the upper track 3 and The lower track 4 together forms a circular ring structure, and a No. 1 magnetic block 5 is fixedly installed on the other end of the lower track 4, and a No. 2 magnetic block 6 is arranged above the No. 1 magnetic block 5, and the No. 2 magnetic block 6 is fixedly installed on one end of the upper track 3. The magnetic poles of the No. 1 magnetic block 5 and the No. 2 magnetic block 6 are adsorbed and connected, and a groove structure is arranged on the surface of one side of the upper track 3, and the other side surface of the upper track 3 is fixedly connected to the side surface of the upper support ring 1 through a bracket, and a groove structure is arranged on the surface of one side of the lower track 4. The surface is fixedly connected to the side surface of the lower support ring 2 through a bracket, and the upper support ring 1, the lower support ring 2, the upper rail 3, the lower rail 4 and the pulley 9 constitute a support structure. The support structure is symmetrically arranged with two groups, and a No. 1 slider 7 is slidably installed on the surface of one group of support structures. The cross section of the No. 1 slider 7 is C-shaped, and the surface of the No. 1 slider 7 is slidably connected to the surface of the upper rail 3 and the lower rail 4. Another pulley 9 is arranged on the surface of the No. 1 slider 7, and the pulley 9 at this place contacts the slide grooves on the surfaces of the upper rail 3 and the lower rail 4. The pulley 9 has a built-in control structure to realize remote control. A camera 8 is fixedly installed on the side surface of the No. 1 slider 7. There are two groups of No. 1 slider 7 and camera 8. The two groups of support structures are connected by a connecting piece 10. The connecting piece 10 is a three-section sleeve connection structure. The connecting part of the connecting piece 10 is a circular ring connected by a long rod. The two ends of the connecting piece 10 are respectively sleeved and connected to the side surfaces of the two support structures. A plurality of connecting pieces 10 connect the two upper support rings 1 and the two lower support rings 2 respectively. like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, when the device is used to detect defects in a pipeline, one end of the upper support ring 1 and the lower support ring 2 is rotated to open, and the upper support ring 1 and the lower support ring 2 drive the upper track 3 and the lower track 4 to move synchronously and open, and the pipeline is sleeved therein by using the upper support ring 1 and the lower support ring 2, and the other ends of the upper support ring 1 and the lower support ring 2 are rotated. During the rotation of the upper support ring 1 and the lower support ring 2, the other ends of the upper track 3 and the lower track 4 are driven to come closer, and the No. 2 magnetic block 6 at one end of the upper track 3 and the No. 1 magnetic block 5 on the surface of the lower track 4 are attracted to each other, so that the upper track 3 and the lower track 4 form a complete circular ring structure, and after the other ends of the upper support ring 1 and the lower support ring 2 are connected, the device is in a circular shape. The sleeve is arranged on the outer surface of the pipeline. At this time, a slider 7 is arranged on the surface of one set of the upper track 3 and the lower track 4. The pulley 9 at the slider 7 is started, so that the slider 7 can slide circumferentially in the slide groove on the surface of the upper track 3 and the lower track 4. When the slider 7 slides, it drives the camera 8 to move synchronously. The camera 8 performs multi-angle visual inspection on the outer surface of the pipeline. The pulley 9 is started to drive the device to move on the surface of the pipeline, thereby realizing the visual inspection process of the outer surface of the pipeline. When the pipeline turns, the connecting piece 10 can be used to realize the sequential turning process of the two groups of support structures, so as to avoid the occurrence of blind spots in the detection of the integrated device during the turning process.

[0027] The upper surface of the movable end of the lower support ring 2 is provided with a through groove, and the groove on the surface of the lower support ring 2 is snap-connected with the movable end of the upper support ring 1, and the movable end of the upper support ring 1 can be squeezed and deformed. The surfaces of the upper support ring 1 and the lower support ring 2 are provided with a connecting structure, and the connecting structure can realize the connection and snap-fit ​​between the upper support ring 1 and the lower support ring 2. The connecting structure includes a card slot 11, and the card slot 11 is an L-shaped structure. The card slot 11 is arranged on the inner wall of the groove on the surface of the lower support ring 2. One end of the card slot 11 is connected with the surface of the lower support ring 2, and the inside of the card slot 11 is snap-connected with a card block 12, and the card block 12 is fixedly installed on the side surface of the upper support ring 1. A reinforcement structure is arranged in the groove on the surface of the upper support ring 1 and the lower support ring 2, and the reinforcement structure can realize the reinforcement of the connection process between the upper support ring 1 and the lower support ring 2. The reinforcement structure includes an airbag 13, and the airbag 13 is embedded and fixed in the bottom surface of the groove of the lower support ring 2. The surface of the airbag 13 is deformable. The lower end of the airbag 13 is connected with a connecting pipe 14, and the connecting pipe 14 is embedded and fixed in the interior of the lower support ring 2. The other end of the connecting pipe 14 passes through the inner surface of the lower support ring 2, and the end of the connecting pipe 14 is open. A limit block with a convex structure is arranged on the inner wall of the open end of the connecting pipe 14, and a piston 15 is slidably installed on the inner wall of the connecting pipe 14. The piston 15 is fixedly connected with a push block 16 through a connecting rod; like Figure 4 , Figure 6 and Figure 7As shown, in the process of connecting the upper support ring 1 and the lower support ring 2, the block 12 on the surface of the upper support ring 1 is inserted into the groove 11 on the surface of the lower support ring 2 and moves along the L-shaped groove 11. When the block 12 moves to the end of the L-shaped groove 11, the push block 16 on the inner surface of the lower support ring 2 is subjected to the force of the pipeline surface, pushing the push block 16 to move in the direction of the connecting pipe 14. The push block 16 pushes the piston 15 to slide inside the connecting pipe 14. The sliding piston 15 pushes and squeezes the air inside the connecting pipe 14 into the airbag 13, causing the airbag 13 to expand and bulge. The airbag 13 pushes the upper support ring 1 upward, causing the block 12 on the outer surface of the upper support ring 1 to move upward inside the L-shaped groove 11, so that the block 12 is engaged and fixed inside the groove 11, thereby strengthening the connection process between the upper support ring 1 and the lower support ring 2.

[0028] A support structure is provided on the inner surface of the upper rail 3 and the lower rail 4. The support structure can ensure the stability of the upper rail 3 and the lower rail 4 on the pipe surface during the use of the device. The support structure includes a support block 17. The support block 17 is an arc-shaped structure. A telescopic rod 18 is connected to one side surface of the support block 17. The other end of the telescopic rod 18 is fixedly installed on the inner surface of the upper rail 3 or the lower rail 4. A spring 19 is provided on the outer surface of the telescopic rod 18. One end of the spring 19 is connected to the surface of the support block 17. The other end of the spring 19 is fixedly connected to the inner surface of the upper rail 3 or the lower rail 4. like Figure 8 As shown, when the device is connected, the support block 17 on the inner surface of the upper rail 3 and the lower rail 4 contacts the surface of the pipe, and the support block 17 drives the telescopic rod 18 and the spring 19 to move synchronously. The telescopic rod 18 and the spring 19 can ensure that during the movement of the device, the support block 17 is always in contact with the surface of the pipe, supporting the inner surface of the upper rail 3 or the lower rail 4, thereby ensuring the stability of the movement of the upper rail 3 or the lower rail 4.

[0029] A cleaning structure is arranged on the surface of another group of supporting structures. The cleaning structure can realize the cleaning process of the pipeline surface before detection, so as to improve the accuracy of visual detection. The cleaning structure comprises a second slider 20. The second slider 20 has the same structure as the first slider 7. The second slider 20 is slidably mounted on the surfaces of the upper track 3 and the lower track 4. A plurality of pulleys 9 are arranged on the surface of the second slider 20. The pulleys 9 at this location are in contact with the slide grooves on the surfaces of the upper track 3 and the lower track 4. The pulleys 9 have a built-in control structure to realize remote control. A cleaning block 21 is fixedly mounted on the lower surface of the second slider 20. The cleaning block 21 is an arc-shaped structure, and the surface of the cleaning block 21 is compressed. A guide block 22 is fixedly mounted on the side surface of the cleaning block 21. The guide block 22 is an arc-shaped structure. Arc-shaped ventilation holes are arranged at both ends of the guide block 22. An arc-shaped air outlet is arranged on the lower surface of the guide block 22. The air outlet on the lower surface of the guide block 22 is connected with the arc-shaped ventilation hole inside the guide block 22. like Fig. 9 and Fig.10 As shown, during the process of the device moving and detecting the surface of the pipeline, a second slider 20 is set on the surface of another group of supporting structures, and the pulley 9 at the second slider 20 is started. The pulley 9 drives the second slider 20 to slide on the surface of the circular structure formed by the upper track 3 and the lower track 4. The sliding second slider 20 drives the cleaning block 21 to move on the surface of the pipeline. The moving cleaning block 21 cleans the surface of the pipeline, thereby ensuring the cleanliness of the pipeline and increasing the accuracy of the detection before the camera 8 performs detection. The cleaning block 21 drives the guide block 22 to move synchronously. When the guide block 22 rotates on the surface of the pipeline, air enters from the arc-shaped ventilation hole on one side of the guide block 22, and moves along the air outlet on the lower surface of the guide block 22 to the pipeline surface, thereby further cleaning the pipeline surface.

[0030] Working principle: One end of the upper support ring 1 and the lower support ring 2 is rotated to open, and is sleeved on the outer surface of the pipe. The block 12 on the surface of the upper support ring 1 is inserted into the groove 11 on the surface of the lower support ring 2. At this time, the outer surface of the pipe exerts a force on the push block 16, and the push block 16 drives the piston 15 to slide inside the connecting pipe 14, squeezing the air inside the connecting pipe 14 into the airbag 13, and the airbag 13 expands. The airbag 13 pushes the upper support ring 1 upward, further strengthening the connection between the upper support ring 1 and the lower support ring 2, and the upper track 3 and the lower track 4 move synchronously, and the second magnetic block 6 and the first magnetic block are used. 5 are adsorbed on each other to complete the connection, and the No. 1 slider 7 is used to slide on the surface of the upper track 3 and the lower track 4, thereby driving the camera 8 to move synchronously to perform multi-angle defect detection on the outer surface of the pipeline. During the sliding process of the No. 2 slider 20 on the surface of the other group of upper track 3 and the lower track 4, the cleaning block 21 and the guide block 22 are driven to move to clean the surface of the pipeline, thereby increasing the accuracy of defect detection by the camera 8. When the pipeline turns, the connecting piece 10 can be used to realize the sequential turning process of the two groups of support structures, thereby avoiding the occurrence of blind spots in the detection of the integrated device during the turning process.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A pipeline surface defect detection machine capable of multi-angle observation, comprising an upper support ring (1), the upper support ring (1) being a semi-circular ring structure, one end of the upper support ring (1) being rotatably connected to a lower support ring (2), the lower support ring (2) being a semi-circular ring structure, the upper support ring (1) and the lower support ring (2) forming a complete circular ring structure, the inner walls of the upper support ring (1) and the lower support ring (2) being respectively provided with a plurality of pulleys (9), the pulleys (9) being provided with a built-in driving mechanism for realizing remote control, an upper rail (3) being provided on one side of the upper support ring (1), the upper rail (3) being a semi-circular ring structure, one end of the upper rail (3) being rotatably connected to a lower rail (4), the lower rail (4) being a semi-circular ring structure, The upper track (3) and the lower track (4) together form a circular ring structure, the other end of the lower track (4) is fixedly mounted with a first magnetic block (5), a second magnetic block (6) is arranged above the first magnetic block (5), the second magnetic block (6) is fixedly mounted on one end of the upper track (3), the first magnetic block (5) and the second magnetic block (6) are magnetically connected by magnetic poles, a groove structure is arranged on one side surface of the upper track (3), the other side surface of the upper track (3) is fixedly connected to the side surface of the upper support ring (1) through a bracket, the groove structure is arranged on one side surface of the lower track (4), the other side surface of the lower track (4) is fixedly connected to the side surface of the lower support ring (2) through a bracket, and the characteristics are as follows: The upper support ring (1), the lower support ring (2), the upper rail (3), the lower rail (4) and the pulley (9) constitute a support structure. The support structure is symmetrically arranged in two groups. A first slider (7) is slidably mounted on the surface of one group of the support structures. The cross section of the first slider (7) is C-shaped. The surface of the first slider (7) is slidably connected to the surfaces of the upper rail (3) and the lower rail (4). Another pulley (9) is arranged on the surface of the first slider (7). The pulley (9) is in contact with the slide grooves on the surfaces of the upper rail (3) and the lower rail (4). The pulley (9) has a built-in control structure to realize remote control. A camera (8) is fixedly mounted on the side surface of the first slider (7). The first slider (7) and the camera (8) are arranged in two groups.

2. The pipeline surface defect detection machine capable of multi-angle observation according to claim 1, characterized in that: The two groups of support structures are connected via a connecting piece (10), the connecting piece (10) is a three-section sleeve connection structure, the connecting part of the connecting piece (10) is a circular ring connected by a long rod, the two ends of the connecting piece (10) are respectively sleeve-connected to the side surfaces of the two support structures, and a plurality of the connecting pieces (10) respectively connect the two upper support rings (1) and the two lower support rings (2).

3. The pipeline surface defect detection machine capable of multi-angle observation according to claim 1, characterized in that: A through groove is provided on the upper surface of the movable end of the lower support ring (2); the groove on the surface of the lower support ring (2) is snap-connected with the movable end of the upper support ring (1); the movable end of the upper support ring (1) can be squeezed and deformed; and connection structures are provided on the surfaces of the upper support ring (1) and the lower support ring (2); the connection structures can realize the snap connection between the upper support ring (1) and the lower support ring (2).

4. The pipeline surface defect detection machine capable of multi-angle observation according to claim 3 is characterized in that: The connection structure comprises a clamping groove (11), the clamping groove (11) being an L-shaped structure, the clamping groove (11) being arranged on the inner wall of a groove on the surface of a lower support ring (2), one end of the clamping groove (11) being connected to the surface of the lower support ring (2), a clamping block (12) being engaged and connected inside the clamping groove (11), the clamping block (12) being fixedly mounted on the side surface of the upper support ring (1), and a reinforcement structure being arranged in the groove on the surface of the lower support ring (2), the reinforcement structure being capable of reinforcing the connection process between the upper support ring (1) and the lower support ring (2).

5. The pipeline surface defect detection machine capable of multi-angle observation according to claim 4, characterized in that: The reinforcement structure comprises an airbag (13), the airbag (13) being embedded and fixed in the bottom surface of the groove of the lower support ring (2), the surface of the airbag (13) being deformable, the lower end of the airbag (13) being connected through a connecting pipe (14), the connecting pipe (14) being embedded and fixed in the interior of the lower support ring (2), the other end of the connecting pipe (14) passing through the inner surface of the lower support ring (2), and the end of the connecting pipe (14) being open, a stop block with a protruding structure being arranged on the inner wall of the open end of the connecting pipe (14), a piston (15) being slidably mounted on the inner wall of the connecting pipe (14), and the piston (15) being fixedly connected to a push block (16) via a connecting rod.

6. The pipeline surface defect detection machine capable of multi-angle observation according to claim 1, characterized in that: A support structure is provided on the inner surfaces of the upper track (3) and the lower track (4), and the support structure can ensure the stability of the upper track (3) and the lower track (4) on the surface of the pipeline during use of the device.

7. The pipeline surface defect detection machine capable of multi-angle observation according to claim 6, characterized in that: The support structure comprises a support block (17), the support block (17) being an arc-shaped structure, a telescopic rod (18) being connected to a surface of one side of the support block (17), the other end of the telescopic rod (18) being fixedly mounted on an inner surface of an upper track (3) or a lower track (4), a spring (19) being arranged on an outer surface of the telescopic rod (18), one end of the spring (19) being connected to a surface of the support block (17), and the other end of the spring (19) being fixedly connected to an inner surface of the upper track (3) or a lower track (4).

8. The pipeline surface defect detection machine capable of multi-angle observation according to claim 1, characterized in that: A cleaning structure is arranged on the surface of another group of the support structures, and the cleaning structure can realize a cleaning process of the pipeline surface before detection, thereby improving the accuracy of visual detection.

9. The pipeline surface defect detection machine capable of multi-angle observation according to claim 8, characterized in that: The cleaning structure comprises a second slider (20), the second slider (20) having the same structure as the first slider (7), the second slider (20) being slidably mounted on the surface of the upper rail (3) and the lower rail (4), the surface of the second slider (20) being provided with a plurality of pulleys (9), the pulleys (9) being in contact with the slide grooves on the surface of the upper rail (3) and the lower rail (4), the pulleys (9) being provided with a built-in control structure for realizing remote control, and the lower surface of the second slider (20) being fixed with a plurality of pulleys (9). A cleaning block (21) is fixedly installed, the cleaning block (21) is an arc-shaped structure, and the surface of the cleaning block (21) is compressed; a guide block (22) is fixedly installed on the side surface of the cleaning block (21); the guide block (22) is an arc-shaped structure, arc-shaped ventilation holes are provided at both ends of the guide block (22), an arc-shaped air outlet is provided at the lower surface of the guide block (22), and the air outlet on the lower surface of the guide block (22) is connected to the arc-shaped ventilation hole inside the guide block (22).

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