An ultrasonic surface defect detection device

Abstract

The present application relates to the technical field of ultrasonic testing, and particularly relates to an ultrasonic surface defect detection device, which includes a pipe placement rack. A steel pipe is placed on the pipe placement rack. A plurality of conveying units are arranged beside the pipe placement rack. The plurality of conveying units are arranged along the axial direction of the steel pipe. Each conveying unit includes a mounting seat. A directional wheel is rotatably arranged on the mounting seat. An adjusting frame is slidably arranged on the mounting seat. An adjusting member for driving the adjusting frame to slide is arranged on the mounting seat. An angular wheel is rotatably arranged on the adjusting frame. A driving member for driving the angular wheel to rotate is arranged on the adjusting frame. The outer side wall of the steel pipe abuts against the directional wheel and the angular wheel simultaneously. An angular control member is arranged on the adjusting frame. The angular control member is used to adjust the included angle between the axis of the angular wheel and the axis of the steel pipe. A pipe taking assembly is arranged between the pipe placement rack and the conveying unit. A detection assembly for detecting the steel pipe is arranged along the arrangement direction of the mounting seats. The present application has the effects of adapting to steel pipes with different diameters and improving the detection efficiency of steel pipes.

Description

Technical Field

[0001] This application relates to the technical field of ultrasonic testing, and particularly to an ultrasonic surface defect detection device. Background Art

[0002] Ultrasonic metal detection is widely used in quality control, safety assessment, and fault diagnosis of metal products. The principle is that when ultrasonic waves propagate in metal materials, they will encounter interfaces with different acoustic impedances, and these interfaces will cause reflection, refraction, and waveform conversion. When ultrasonic waves encounter defects or changes in the density, sound velocity, etc. of the material itself, reflected waves will be generated. The reflected waves are captured by the receiving probe and converted into electrical signals. Through data processing and display systems, it can be analyzed whether there are defects inside the material, as well as the specific location and nature of the defects.

[0003] Currently, in the process of producing seamless steel pipes, since the steel pipes are usually long and heavy, ultrasonic surface defect detection equipment is used for quality inspection of the steel pipes. During the detection process, operators need to use handling equipment to transport the steel pipes to the location of the ultrasonic surface defect detection equipment in sequence, and then slowly and uniformly rotate the steel pipes with the help of tools, so that the ultrasonic surface defect detection equipment can detect all parts of the outer edge of the steel pipes.

[0004] However, during the process of operators operating the transfer equipment to transfer the steel pipes, due to the need to pay attention to various safety issues in the factory, it takes a lot of time to transfer the steel pipes. And since the number of steel pipes to be detected in the factory is usually large, the detection efficiency of the steel pipes is low, which has deficiencies. Summary of the Invention

[0005] In order to improve the problem that it takes a lot of time for workers to transfer steel pipes, this application provides an ultrasonic surface defect detection device.

[0006] An ultrasonic surface defect detection device provided by this application adopts the following technical solutions:

[0007] An ultrasonic surface defect detection device includes a pipe placement rack on which steel pipes are placed. There are multiple conveying units arranged beside the pipe placement rack along the axial direction of the steel pipe. Each conveying unit includes a mounting seat on which a directional wheel is rotatably arranged. An adjusting frame is slidably arranged on the mounting seat, and an adjusting member for driving the adjusting frame to slide is arranged on the mounting seat. An angular wheel is rotatably arranged on the adjusting frame, and a driving member for driving the angular wheel to rotate is arranged on the adjusting frame. The outer sidewall of the steel pipe abuts against both the directional wheel and the angular wheel simultaneously. An angular control member is arranged on the adjusting frame, and the angular control member is used to adjust the included angle between the axis of the angular wheel and the axis of the steel pipe. A pipe picking component is arranged between the pipe placement rack and the conveying unit, and the pipe picking component is used to transfer the steel pipe on the pipe placement rack between the directional wheel and the angular wheel. A detection component for detecting the steel pipe is arranged along the arrangement direction of the mounting seat.

[0008] By adopting the above technical solution, workers stack the steel pipes on the pipe placement rack through a transportation device. Then, according to the diameter of the steel pipe, the worker adjusts the angle of the axis of the angular wheel through the angular control member. After that, the adjusting member drives the adjusting frame to slide, thereby adjusting the distance between the angular wheel and the directional wheel to adapt to the steel pipe of this diameter size. Then, the pipe picking component transfers the steel pipe on the pipe placement rack between the directional wheel and the angular wheel, and the driving member drives the angular wheel to rotate, so that the steel pipe is conveyed towards the detection component. At the same time, the steel pipe continuously rotates around its axis during the conveying process. After the detection component detects the steel pipe, the steel pipe is conveyed to the next process, thereby improving the efficiency of steel pipe detection.

[0009] Optionally, the adjusting member includes a guide rail and an adjusting cylinder arranged on the mounting seat. The adjusting cylinder is electrically connected to the control system. The adjusting frame is arranged on the piston rod of the adjusting cylinder, and the adjusting frame is in sliding fit with the guide rail.

[0010] By adopting the above technical solution, the control system starts the adjusting cylinder. Under the guiding action of the guide rail, the adjusting frame drives the angular wheel to approach the directional wheel to adapt to steel pipes of different diameter sizes.

[0011] Optionally, the driving member includes a driving motor and a speed reducer arranged on the adjusting frame. The driving motor is electrically connected to the control system. The output shaft of the driving motor is connected to the input end of the speed reducer, and the angular wheel is connected to the output end of the speed reducer.

[0012] By adopting the above technical solution, the control system starts the driving motor. The output shaft of the driving motor transmits torque to the angular wheel through the speed reducer to drive the angular wheel to rotate.

[0013] Optionally, the angle control member includes a linkage shaft rotatably disposed on the adjustment frame and connected to the output end of the speed reducer. A end plate is coaxially disposed on the linkage shaft. A linkage ring is coaxially disposed on the side of the angle wheel facing the end plate. A secondary link rod is slidably disposed on the linkage ring in the radial direction along its axis. A main link rod is slidably disposed on the end plate along its axis. The main link rod is hinged to the secondary link rod. A ball shaft is coaxially disposed on the side of the angle wheel facing away from the linkage ring. The ball shaft is ball-jointed to the adjustment frame. An angle control ring is coaxially disposed on the side of the angle wheel facing away from the linkage ring. A connection block is slidably disposed on the angle control ring in the circumferential direction along its axis. An angle control cylinder is hinged between the connection block and the adjustment frame. The angle control cylinder is electrically connected to the control system.

[0014] By adopting the above technical solution, when the control system activates the angle control cylinder, the piston rod of the angle control cylinder extends. The connection block drives the angle wheel to rotate around the rotation center of the ball shaft through the angle control ring, thereby changing the angle of the axis of the angle wheel. At the same time, the linkage ring on the angle wheel drives the secondary link rod to rotate synchronously. At the same time, relative sliding occurs between the secondary link rod and the linkage ring, and the secondary link rod drives the main link rod to slide along the axis of the end plate. Relative rotation occurs between the secondary link rod and the main link rod. When the output end of the speed reducer drives the linkage shaft to rotate, the linkage shaft drives the inclined angle wheel to rotate through the main link rod on the end plate and the secondary link rod on the linkage ring, so as to realize the conveying of the steel pipe.

[0015] Optionally, the pipe taking assembly includes a pipe taking seat disposed between the mounting seat and the pipe placing frame. The top surface of the pipe placing frame for placing the steel pipe is inclined towards the pipe taking seat in the direction from top to bottom. A pipe taking shaft parallel to the axis of the steel pipe is rotatably disposed on the pipe taking seat. A pipe taking motor electrically connected to the control system is disposed on the pipe taking seat. The pipe taking shaft is coaxially disposed on the output shaft of the pipe taking motor. A plurality of pipe taking plates are disposed on the pipe taking shaft along its axis. A baffle is disposed at one end of the pipe taking plate close to the mounting seat, and a counterweight plate with a sector-shaped cross section is disposed at the other end. When the baffle blocks the steel pipe and transfers the steel pipe between the orientation wheel and the angle wheel, the sector-shaped arc surface of the counterweight plate is used to block the steel pipe on the pipe placing frame.

[0016] By adopting the above technical solution, the control system activates the pipe taking motor. The output shaft of the pipe taking motor drives the pipe taking shaft to rotate in the reverse direction. The pipe taking shaft drives the pipe taking plates to rotate in the reverse direction. The pipe taking plates drive the counterweight plates to gradually rotate to the lower part of the steel pipe on the pipe placing frame until the steel pipe on the pipe placing frame rolls from the sector-shaped arc surface of the counterweight plate to the pipe taking plates. Then the output shaft of the pipe taking motor drives the pipe taking shaft to rotate in the forward direction. The steel pipe on the pipe taking plates rolls to the baffle. At the same time, the sector-shaped arc surface of the counterweight plate is used to block the remaining steel pipes on the pipe placing frame until the pipe taking plates and the baffle place the steel pipe between the orientation wheel and the angle wheel, so as to realize the sequential transfer of the steel pipes on the pipe placing frame.

[0017] Optionally, a tube positioning and retrieving rack is provided on the tube placing rack. A tube limiting rack and a tube blocking rack are vertically slidably provided on the tube positioning and retrieving rack. The distance between the tube limiting rack and the tube blocking rack is greater than the diameter of the steel tube and less than 1.5 times the diameter of the steel tube. A gear is meshed between the tube limiting rack and the tube blocking rack. The gear is rotatably provided on the tube positioning and retrieving rack. A pressing plate is provided on the tube blocking rack. The pressing plate is used to abut against the counterweight plate. A reset compression spring is propped between the side of the pressing plate facing away from the counterweight plate and the tube positioning and retrieving rack. When the pressing plate squeezes the reset compression spring to the lowest position, the tube blocking rack releases the steel tube on the side close to the counterweight plate. At the same time, the tube limiting rack rises and is inserted between two steel tubes.

[0018] By adopting the above technical solution, when the counterweight plate presses on the pressing plate, the reset compression spring is compressed and deformed. The pressing plate drives the tube blocking rack to descend. At the same time, under the transmission of the gear, the tube limiting rack rises vertically. The steel tube on the fan-shaped arc surface side close to the counterweight plate rolls from the fan-shaped arc surface of the counterweight plate to the tube retrieving plate. At the same time, the second steel tube on the fan-shaped arc surface side close to the counterweight plate is blocked by the tube limiting rack, so as to control that only one steel tube rolls onto the tube retrieving plate each time. When the counterweight plate resets, the tube limiting rack descends. At the same time, the tube blocking rack rises and blocks the steel tube again.

[0019] Optionally, buffer rubber plates are provided on the counterweight plate, the tube retrieving plate and the baffle. The buffer rubber plates are used to contact the steel tubes.

[0020] By adopting the above technical solution, the possibility of damage to the outer surface of the steel tube during transportation is reduced.

[0021] Optionally, the detection assembly includes a detection seat and a detection rack. A plurality of ultrasonic probes electrically connected to the control system are provided on the detection rack. The plurality of ultrasonic probes are arranged along the axis direction of the steel tube. The detection end of the ultrasonic probe points to the steel tube. A support block is provided on the detection seat. A support wheel is slidably provided on the support block. A sliding member for driving the support wheel to slide is provided on the support block. A support compression spring is propped between the support block and the detection seat. A connecting screw is provided on the detection seat. The connecting screw slidably passes through the support block. An adjusting nut is threadedly connected to the connecting screw on the side of the support block facing away from the support compression spring.

[0022] By adopting the above technical solution, the worker turns the adjusting nut according to the diameter of the steel tube to adjust the height of the support block. Then, the support wheel is controlled to approach and support the steel tube through the sliding member to ensure the stable state of the steel tube during the detection by the ultrasonic probe. At the same time, for the angular wheels on both sides of the ultrasonic probe, by controlling the axis angle of the angular wheels, the rotation speed and the conveying speed of the steel tube are controlled, so as to meet the detection requirements of steel tubes with different diameters.

[0023] Optionally, the sliding member includes a bidirectional screw rotatably arranged on the support block. The axis of the bidirectional screw is perpendicular to the axis of the steel pipe. Two support columns are threadedly connected to the bidirectional screw. The support wheels are rotatably connected to the support columns. The two support columns are respectively located on both sides of the axis of the steel pipe. The two support columns move towards or away from each other simultaneously. A sliding groove for the support column to slide is formed on the support block.

[0024] By adopting the above technical solution, the worker turns the bidirectional screw, and the bidirectional screw controls the two support columns to move towards each other and approach, so that the support wheels on the two support columns simultaneously approach and abut against the outer side wall of the steel pipe, thereby reducing the possibility of the detected part of the steel pipe shaking during the conveying process of the steel pipe, which is beneficial to improving the accuracy of the detection result of the steel pipe.

[0025] Optionally, a pressing frame is arranged beside the detection frame. A pressing cylinder electrically connected to the control system is arranged on the pressing frame. A pressing wheel is rotatably arranged on the piston rod of the pressing cylinder. The pressing wheel is used to press the steel pipe against the orientation wheel and the angular orientation wheel.

[0026] By adopting the above technical solution, the control system starts the pressing cylinder, and the piston rod of the pressing cylinder drives the pressing wheel to press on the steel pipe, thereby reducing the possibility of the steel pipe shaking during the conveying process and further improving the accuracy of the result during the detection of the steel pipe.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The worker stacks the steel pipes on the pipe placement rack through the transportation equipment. Then, according to the diameter of the steel pipe, the worker adjusts the angle of the axis of the angular orientation wheel through the angular control member. After that, the adjusting member drives the adjusting frame to slide, thereby adjusting the distance between the angular orientation wheel and the orientation wheel to adapt to the steel pipe of this diameter size. Then, the pipe taking assembly transfers the steel pipe on the pipe placement rack between the orientation wheel and the angular orientation wheel. The driving member drives the angular orientation wheel to rotate, so that the steel pipe is conveyed towards the detection assembly. At the same time, the steel pipe continuously rotates around its axis during the conveying process. After the detection assembly detects the steel pipe, the steel pipe is conveyed to the next process, thereby improving the efficiency of steel pipe detection;

[0029] 2. The control system starts the angular control cylinder, and the piston rod of the angular control cylinder extends. The connecting block drives the angular orientation wheel to rotate around the rotation center of the spherical shaft through the angular control ring, thereby changing the angle of the axis of the angular orientation wheel. At the same time, the linkage ring on the angular orientation wheel drives the secondary link rod to rotate synchronously. At the same time, relative sliding occurs between the secondary link rod and the linkage ring, and the secondary link rod drives the main link rod to slide along the axis direction of the end plate. Relative rotation occurs between the secondary link rod and the main link rod. When the output end of the speed reducer drives the linkage shaft to rotate, the linkage shaft drives the inclined angular orientation wheel to rotate through the main link rod on the end plate and the secondary link rod on the linkage ring, thereby realizing the conveying of the steel pipe;

[0030] 3. When the counterweight plate presses on the pressing plate, the reset compression spring is compressed and deformed. The pressing plate drives the retaining pipe rack to descend. At the same time, under the driving action of the gear, the limiting pipe rack rises vertically. The steel pipe on the side of the fan-shaped arc surface of the counterweight plate rolls from the fan-shaped arc surface of the counterweight plate to the pipe-taking plate. At the same time, the second steel pipe on the side of the fan-shaped arc surface of the counterweight plate is blocked by the limiting pipe rack, so as to control that only one steel pipe rolls onto the pipe-taking plate each time. When the counterweight plate resets, the limiting pipe rack descends, and at the same time, the retaining pipe rack rises and blocks the steel pipe again. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0032] Figure 2 It is a cross-sectional view of an embodiment of the present application for showing the positional relationship among the pipe-taking plate, the baffle plate and the counterweight plate.

[0033] Figure 3 It is a schematic structural diagram of an embodiment of the present application for showing the positional relationship among the angle control ring, the angle wheel and the angle control cylinder.

[0034] Figure 4 It is a schematic structural diagram of an embodiment of the present application for showing the positional relationship among the linkage ring, the secondary link rod and the main link rod.

[0035] Figure 5 It is a schematic structural diagram of an embodiment of the present application for showing the positional relationship among the ultrasonic probe, the support block and the support wheel.

[0036] Description of the Reference Numerals: 1, steel pipe; 2, pipe placement rack; 3, conveying unit; 31, mounting seat; 32, directional wheel; 33, adjusting frame; 34, adjusting member; 341, guide rail; 342, adjusting cylinder; 35, angle wheel; 36, driving member; 361, driving motor; 362, speed reducer; 37, angle control member; 371, linkage shaft; 372, end plate; 373, linkage ring; 374, secondary link rod; 375, main link rod; 376, ball shaft; 377, angle control ring; 378, connecting block; 379, angle control cylinder; 4, pipe-taking assembly; 41, pipe-taking seat; 42, pipe-taking shaft; 43, pipe-taking motor; 44, pipe-taking plate; 45, baffle plate; 46, counterweight plate; 5, detection assembly; 51, detection seat; 52, detection frame; 53, ultrasonic probe; 54, support block; 55, support wheel; 56, sliding member; 561, bidirectional screw; 562, support column; 563, chute; 57, support compression spring; 58, connecting screw; 59, adjusting nut; 6, fixed pipe-taking frame; 7, limiting pipe rack; 8, retaining pipe rack; 9, gear; 10, pressing plate; 11, reset compression spring; 12, buffer rubber plate; 13, pressing frame; 14, pressing cylinder; 15, pressing wheel. Detailed Embodiment

[0037] The following further elaborates on this application in conjunction with the appended drawings. Figures 1 - 5 This application is further described in detail below.

[0038] An embodiment of this application discloses an ultrasonic surface defect detection device.

[0039] Referring to Figure 1 , an ultrasonic surface defect detection device includes a pipe rack 2, steel pipes 1 are stacked on the pipe rack 2, and a plurality of conveying units 3 are arranged beside the pipe rack 2. The plurality of conveying units 3 are arranged at intervals along the axial direction of the steel pipe 1. The conveying unit 3 includes a mounting seat 31, a directional wheel 32 is rotatably connected to the mounting seat 31, an adjusting frame 33 is slidably arranged on the mounting seat 31, and an adjusting member 34 for driving the adjusting frame 33 to slide is arranged on the mounting seat 31.

[0040] Referring to Figure 1 , Figure 2 and Figure 3 , the adjusting member 34 includes a guide rail 341 and an adjusting cylinder 342 arranged on the mounting seat 31. The cross-section of the guide rail 341 is in the shape of a dovetail. The adjusting cylinder 342 is electrically connected to the control system. The adjusting frame 33 is welded to the piston rod of the adjusting cylinder 342, and the adjusting frame 33 is slidably engaged with the guide rail 341.

[0041] Referring to Figure 1 , Figure 2 and Figure 3 , an angular wheel 35 is rotatably arranged on the adjusting frame 33, and a driving member 36 for driving the angular wheel 35 to rotate is arranged on the adjusting frame 33. The driving member 36 includes a driving motor 361 and a reduction gearbox 362 bolted to the adjusting frame 33. The driving motor 361 is electrically connected to the control system. The output shaft of the driving motor 361 is coaxially connected to the input end of the reduction gearbox 362, and the angular wheel 35 is connected to the output end of the reduction gearbox 362.

[0042] Referring to Figure 2 , Figure 3 and Figure 4 , the outer side wall of the steel pipe 1 is used to abut against the directional wheel 32 and the angular wheel 35 simultaneously. An angular control member 37 is arranged on the adjusting frame 33. The angular control member 37 is used to adjust the included angle between the axis of the angular wheel 35 and the axis of the steel pipe 1. The angular control member 37 includes a linkage shaft 371 rotatably connected to the adjusting frame 33 and connected to the output end of the reduction gearbox 362. A end plate 372 is coaxially welded on the linkage shaft 371.

[0043] Referring to Figure 2 , Figure 3 and Figure 4, on one side of the angular wheel 35 facing the end plate 372, a linkage ring 373 is coaxially welded. A secondary linkage rod 374 is slidably arranged on the linkage ring 373 in the radial direction along its axis. The main linkage rod 375 is slidably arranged on the end plate 372 along its axis. There is a spacing between the main linkage rod 375 and the linkage shaft 371. The main linkage rod 375 is hinged to the secondary linkage rod 374. On the side of the angular wheel 35 facing away from the linkage ring 373, a spherical shaft 376 is coaxially welded.

[0044] Referring to Figure 2 , Figure 3 and Figure 4 , the spherical shaft 376 is ball-jointed to the adjusting frame 33. On the side of the angular wheel 35 facing away from the linkage ring 373, an angular control ring 377 with a T-shaped cross-section is coaxially welded. A connecting block 378 with a C-shaped cross-section is slidably connected to the angular control ring 377 in the circumferential direction along its axis. An angular control cylinder 379 is hinged between the connecting block 378 and the adjusting frame 33. The angular control cylinder 379 rotates horizontally and is electrically connected to the control system.

[0045] Workers stack the steel pipes 1 on the pipe placement rack 2 through the transportation equipment. Then, according to the diameter of the steel pipes 1, the workers start the angular control cylinder 379 through the control system. The piston rod of the angular control cylinder 379 extends. The connecting block 378 drives the angular wheel 35 to rotate around the rotation center of the spherical shaft 376 through the angular control ring 377. At the same time, the linkage ring 373 on the angular wheel 35 drives the secondary linkage rod 374 to rotate synchronously. During this process, relative sliding occurs between the secondary linkage rod 374 and the linkage ring 373.

[0046] At the same time, the secondary linkage rod 374 drives the main linkage rod 375 to slide along the axis of the end plate 372, and relative rotation occurs between the secondary linkage rod 374 and the main linkage rod 375, thereby changing the included angle between the axis of the angular wheel 35 and the axis of the steel pipe 1, and further controlling the conveying speed of the steel pipe 1. Then the control system starts the adjusting cylinder 342. Under the guiding action of the guide rail 341, the piston rod of the adjusting cylinder 342 pushes the adjusting frame 33, and the adjusting frame 33 drives the angular wheel 35 to approach the orientation wheel 32 to adapt to the steel pipe 1 of this diameter size.

[0047] Referring to [[ID=~19]] Figure 1 and Figure 2 , a pipe picking assembly 4 is arranged between the pipe placement rack 2 and the conveying unit 3. The pipe picking assembly 4 is used to transfer the steel pipes 1 on the pipe placement rack 2 to between the orientation wheel 32 and the angular wheel 35. The pipe picking assembly 4 includes a pipe picking base 41 arranged between the mounting base 31 and the pipe placement rack 2. The top surface of the pipe placement rack 2 for placing the steel pipes 1 is inclined towards the pipe picking base 41 in the direction from top to bottom.

[0048] Referring to Figure 1 and Figure 2, a pipe picking shaft 42 parallel to the axis of the steel pipe 1 is rotatably connected to the pipe socket 41. A pipe picking motor 43 electrically connected to the control system is bolted to the pipe socket 41. The pipe picking shaft 42 is coaxially bolted to the output shaft of the pipe picking motor 43. A plurality of pipe picking plates 44 are welded to the pipe picking shaft 42 along its axial direction. A baffle 45 is welded to one end of the pipe picking plate 44 close to the mounting seat 31, and a counterweight plate 46 with a sector-shaped cross section is welded to the other end.

[0049] Refer to Figure 1 and Figure 2 , buffer rubber plates 12 are bolted to the counterweight plate 46, the pipe picking plate 44 and the baffle 45. The buffer rubber plates 12 are used to contact the steel pipe 1. When the baffle 45 resists the steel pipe 1 and transfers the steel pipe 1 between the directional wheel 32 and the angular wheel 35, the sector-shaped arc surface of the counterweight plate 46 is used to resist the steel pipe 1 on the pipe placing rack 2.

[0050] Refer to Figure 1 and Figure 2 , a fixed picking rack 6 is arranged below the pipe placing rack 2. A pipe limiting rack 7 and a pipe blocking rack 8 are vertically slidably arranged on the fixed picking rack 6. The distance between the pipe limiting rack 7 and the pipe blocking rack 8 is greater than the diameter of the steel pipe 1 and less than 1.5 times the diameter of the steel pipe 1. A gear 9 is meshed between the pipe limiting rack 7 and the pipe blocking rack 8. The gear 9 is rotatably connected to the fixed picking rack 6.

[0051] Refer to Figure 1 and Figure 2 , a pressing plate 10 is welded to the pipe blocking rack 8. The top of the pressing plate 10 is used to abut against the counterweight plate 46. A return compression spring 11 is propped between the side of the pressing plate 10 facing away from the counterweight plate 46 and the fixed picking rack 6. When the pressing plate 10 squeezes the return compression spring 11 to the lowest position, the pipe blocking rack 8 releases one steel pipe 1 on the side closest to the counterweight plate 46, and at the same time, the pipe limiting rack 7 rises and is inserted between the first steel pipe 1 and the second steel pipe 1 on the side close to the counterweight plate 46.

[0052] Then the control system starts the pipe picking motor 43. The output shaft of the pipe picking motor 43 drives the pipe picking shaft 42 to rotate in the reverse direction. The pipe picking shaft 42 drives the pipe picking plate 44 to rotate in the reverse direction. The pipe picking plate 44 drives the counterweight plate 46 to rotate in the reverse direction and gradually approaches the pressing plate 10. As the counterweight plate 46 gradually rotates to the lower part of the steel pipe 1 on the pipe placing rack 2.

[0053] The pressing plate 10 compresses the return compression spring 11. At the same time, the pressing plate 10 drives the pipe blocking rack 8 to descend. Under the transmission of the gear 9, the pipe limiting rack 7 rises vertically. The first steel pipe 1 on the side closest to the sector-shaped arc surface of the counterweight plate 46 rolls from the sector-shaped arc surface of the counterweight plate 46 to the pipe picking plate 44, and at the same time, the second steel pipe 1 on the side close to the sector-shaped arc surface of the counterweight plate 46 is blocked by the pipe limiting rack 7.

[0054] Then, the output shaft of the tube-taking motor 43 drives the tube-taking shaft 42 to rotate forward. The reset compression spring 11 resumes deformation and pushes the tube-blocking rack 8 upward through the pressing plate 10. Meanwhile, under the action of the gear 9, the tube-limiting rack 7 descends. At this time, the steel pipe 1 on the pipe-placement rack 2 rolls and is blocked by the tube-blocking rack 8. Meanwhile, the steel pipe 1 on the tube-taking plate 44 rolls to the connection between the baffle 45 and the tube-taking plate 44. As the tube-taking shaft 42 continues to rotate forward, the steel pipe 1 at the connection between the tube-taking plate 44 and the baffle 45 is gradually placed between the directional wheel 32 and the angular wheel 35.

[0055] Refer to Figure 1 and Figure 5 , along the arrangement direction of the mounting seat 31, a detection assembly 5 for detecting the steel pipe 1 is arranged. The detection assembly 5 includes a detection seat 51 and a detection frame 52. A plurality of ultrasonic probes 53 that are all electrically connected to the control system are bolted to the detection frame 52. The plurality of ultrasonic probes 53 are arranged along the axial direction of the steel pipe 1, and the detection ends of the ultrasonic probes 53 point to the steel pipe 1.

[0056] Refer to Figure 1 and Figure 5 , a pressing frame 13 is arranged beside the detection frame 52. A pressing cylinder 14 that is electrically connected to the control system is bolted to the pressing frame 13. A pressing wheel 15 is rotatably connected to the piston rod of the pressing cylinder 14. The pressing wheel 15 is used to press the steel pipe 1 onto the directional wheel 32 and the angular wheel 35. A support block 54 is arranged on the detection seat 51. A support compression spring 57 is propped between the support block 54 and the detection seat 51.

[0057] Refer to Figure 1 and Figure 5 , a vertical connection screw 58 is welded on the detection seat 51. The connection screw 58 slidably passes through the support block 54. An adjusting nut 59 is threadedly connected to the connection screw 58 on the side of the support block 54 facing away from the support compression spring 57. Two support wheels 55 are horizontally slidably arranged on the support block 54. The axes of the support wheels 55 are inclined towards the steel pipe 1 along the direction from top to bottom. A sliding member 56 for driving the support wheels 55 to slide is arranged on the support block 54.

[0058] Refer to Figure 1 and Figure 5 , the sliding member 56 includes a horizontal bidirectional screw 561 rotatably connected to the support block 54. The axis of the bidirectional screw 561 is perpendicular to the axis of the steel pipe 1. Two support columns 562 are threadedly connected to the bidirectional screw 561. The support wheels 55 are rotatably connected to the support columns 562. The two support columns 562 are respectively located on both sides of the axis of the steel pipe 1. The two support columns 562 move towards or away from each other simultaneously. A chute 563 for the support columns 562 to slide is formed on the support block 54.

[0059] The worker starts the driving motor 361 through the control system. The output shaft of the driving motor 361 transmits torque to the linkage shaft 371 through the speed reducer 362. The linkage shaft 371 drives the end plate 372 to rotate synchronously. The end plate 372 drives the linkage ring 373 to rotate through the main link 375 and the secondary link 374. The linkage ring 373 drives the angular wheel 35 to rotate synchronously. During the process of driving the steel pipe 1 to be conveyed along its axial direction through the frictional force between the angular wheel 35 and the steel pipe 1, the steel pipe 1 keeps rotating.

[0060] When the steel pipe 1 is conveyed to the pressing frame 13, the control system starts the pressing cylinder 14. The piston rod of the pressing cylinder 14 drives the pressing wheel 15 to press the steel pipe 1 against the guiding wheel 32 and the angular wheel 35. Before the steel pipe 1 is conveyed, the worker turns the adjusting nut 59, adjusts the height of the supporting block 54 through the supporting compression spring 57, and then turns the bidirectional screw 561. The bidirectional screw 561 controls the two supporting columns 562 to move closer to each other, so that the supporting wheels 55 on the two supporting columns 562 simultaneously move closer to and abut against the outer side wall of the steel pipe 1. Then the ultrasonic probe 53 continuously detects the rotating steel pipe 1.

[0061] The implementation principle of an ultrasonic surface defect detection device according to an embodiment of the present application is as follows: The worker stacks the steel pipes 1 on the pipe placing rack 2 through the transportation device. Then, according to the diameter of the steel pipe 1, the worker starts the angular control cylinder 379 through the control system. The piston rod of the angular control cylinder 379 extends, and the connecting block 378 drives the angular wheel 35 to rotate around the rotation center of the spherical shaft 376 through the angular control ring 377. At the same time, the linkage ring 373 on the angular wheel 35 drives the secondary link 374 to rotate synchronously. During this process, relative sliding occurs between the secondary link 374 and the linkage ring 373.

[0062] At the same time, the secondary link 374 drives the main link 375 to slide along the axis direction of the end plate 372, and relative rotation occurs between the secondary link 374 and the main link 375, thereby changing the included angle between the axis of the angular wheel 35 and the axis of the steel pipe 1, and further controlling the conveying speed of the steel pipe 1. Then the control system starts the adjusting cylinder 342. Under the guiding action of the guide rail 341, the piston rod of the adjusting cylinder 342 pushes the adjusting frame 33, and the adjusting frame 33 drives the angular wheel 35 to approach the guiding wheel 32 to adapt to the steel pipe 1 of this diameter size.

[0063] Then the control system starts the pipe taking motor 43. The output shaft of the pipe taking motor 43 drives the pipe taking shaft 42 to rotate reversely. The pipe taking shaft 42 drives the pipe taking plate 44 to rotate reversely. The pipe taking plate 44 drives the counterweight plate 46 to rotate reversely and gradually approach the pressing plate 10. As the counterweight plate 46 gradually rotates to the lower part of the steel pipe 1 on the pipe placing rack 2.

[0064] The pressing plate 10 compresses and resets the compression spring 11. Meanwhile, the pressing plate 10 drives the pipe-blocking rack 8 to descend. Under the driving action of the gear 9, the pipe-limiting rack 7 ascends vertically. The first steel pipe 1 closest to the sector arc surface of the counterweight plate 46 rolls from the sector arc surface of the counterweight plate 46 to the pipe-taking plate 44. Meanwhile, the second steel pipe 1 close to the sector arc surface of the counterweight plate 46 is blocked by the pipe-limiting rack 7.

[0065] Then, the output shaft of the pipe-taking motor 43 drives the pipe-taking shaft 42 to rotate forward. The reset compression spring 11 recovers its deformation and pushes the pipe-blocking rack 8 to ascend through the pressing plate 10. Meanwhile, under the action of the gear 9, the pipe-limiting rack 7 descends. At this time, the steel pipe 1 on the pipe-placement rack 2 rolls and is blocked by the pipe-blocking rack 8. Meanwhile, the steel pipe 1 on the pipe-taking plate 44 rolls to the connection between the baffle 45 and the pipe-taking plate 44. As the pipe-taking shaft 42 continues to rotate forward, the steel pipe 1 at the connection between the pipe-taking plate 44 and the baffle 45 is gradually placed between the directional wheel 32 and the angular wheel 35.

[0066] The worker starts the driving motor 361 through the control system. The output shaft of the driving motor 361 transmits the torque to the linkage shaft 371 through the speed reducer 362. The linkage shaft 371 drives the end plate 372 to rotate synchronously. The end plate 372 drives the linkage ring 373 to rotate through the main link rod 375 and the secondary link rod 374. The linkage ring 373 drives the angular wheel 35 to rotate synchronously. During the process of driving the steel pipe 1 to be conveyed along its axial direction through the frictional force between the angular wheel 35 and the steel pipe 1, the steel pipe 1 rotates continuously.

[0067] When the steel pipe 1 is conveyed to the pressing frame 13, the control system starts the pressing cylinder 14. The piston rod of the pressing cylinder 14 drives the pressing wheel 15 to press the steel pipe 1 against the directional wheel 32 and the angular wheel 35. Before the steel pipe 1 is conveyed, the worker turns the adjusting nut 59, adjusts the height of the support block 54 through the support compression spring 57, and then turns the bidirectional screw rod 561. The bidirectional screw rod 561 controls the two support columns 562 to move closer to each other, so that the support wheels 55 on the two support columns 562 simultaneously approach and abut against the outer sidewall of the steel pipe 1. Then, the ultrasonic probe 53 continuously detects the rotating steel pipe 1.

[0068] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An ultrasonic surface defect detection device, characterized in that: It includes a pipe placement rack (2), a steel pipe (1) is placed on the pipe placement rack (2), and a plurality of conveying units (3) are arranged beside the pipe placement rack (2). The plurality of conveying units (3) are arranged along the axial direction of the steel pipe (1). The conveying unit (3) includes a mounting seat (31), a directional wheel (32) is rotatably arranged on the mounting seat (31), an adjusting frame (33) is slidably arranged on the mounting seat (31), an adjusting member (34) for driving the adjusting frame (33) to slide is arranged on the mounting seat (31), an angular wheel (35) is rotatably arranged on the adjusting frame (33), a driving member (36) for driving the angular wheel (35) to rotate is arranged on the adjusting frame (33). The outer side wall of the steel pipe (1) abuts against the directional wheel (32) and the angular wheel (35) at the same time. An angular control member (37) is arranged on the adjusting frame (33), and the angular control member (37) is used to adjust the included angle between the axis of the angular wheel (35) and the axis of the steel pipe (1). A pipe taking assembly (4) is arranged between the pipe placement rack (2) and the conveying unit (3), and the pipe taking assembly (4) is used to transfer the steel pipe (1) on the pipe placement rack (2) between the directional wheel (32) and the angular wheel (35). A detection assembly (5) for detecting the steel pipe (1) is arranged along the arrangement direction of the mounting seat (31); The driving member (36) includes a driving motor (361) and a speed reducer (362) arranged on the adjusting frame (33). The driving motor (361) is electrically connected to the control system. The output shaft of the driving motor (361) is connected to the input end of the speed reducer (362), and the angular wheel (35) is connected to the output end of the speed reducer (362); The angular control member (37) includes a linkage shaft (371) rotatably arranged on the adjusting frame (33) and connected to the output end of the speed reducer (362). A end plate (372) is coaxially arranged on the linkage shaft (371). A linkage ring (373) is coaxially arranged on the side of the angular wheel (35) facing the end plate (372). A secondary linkage rod (374) is slidably arranged on the linkage ring (373) in the radial direction along its axis. A main linkage rod (375) is slidably arranged on the end plate (372) along its axis. The main linkage rod (375) is hinged to the secondary linkage rod (374). A ball shaft (376) is coaxially arranged on the side of the angular wheel (35) facing away from the linkage ring (373), and the ball shaft (376) is ball-jointed to the adjusting frame (33). A angular control ring (377) is coaxially arranged on the side of the angular wheel (35) facing away from the linkage ring (373). A connecting block (378) is slidably arranged on the angular control ring (377) in the circumferential direction along its axis. An angular control cylinder (379) is hinged between the connecting block (378) and the adjusting frame (33), and the angular control cylinder (379) is electrically connected to the control system; The detection component (5) includes a detection base (51) and a detection frame (52). A plurality of ultrasonic probes (53) are arranged on the detection frame (52), and all of them are electrically connected to the control system. The plurality of ultrasonic probes (53) are arranged along the axial direction of the steel pipe (1), and the detection ends of the ultrasonic probes (53) point to the steel pipe (1). A support block (54) is arranged on the detection base (51), a support wheel (55) is slidably arranged on the support block (54), a sliding member (56) for driving the support wheel (55) to slide is arranged on the support block (54), a support compression spring (57) is propped between the support block (54) and the detection base (51), a connecting screw rod (58) is arranged on the detection base (51), the connecting screw rod (58) slidably passes through the support block (54), and an adjusting nut (59) is threadedly connected to the connecting screw rod (58) on the side of the support block (54) facing away from the support compression spring (57); The sliding member (56) includes a bidirectional screw rod (561) rotatably arranged on the support block (54). The axis of the bidirectional screw rod (561) is perpendicular to the axis of the steel pipe (1). Two support columns (562) are threadedly connected to the bidirectional screw rod (561). The support wheel (55) is rotatably connected to the support column (562). The two support columns (562) are respectively located on both sides of the axis of the steel pipe (1), and the two support columns (562) move towards or away from each other simultaneously. A sliding groove (563) for the support column (562) to slide is formed on the support block (54).

2. An ultrasonic surface defect detection device according to claim 1, characterized in that: The adjusting member (34) includes a guide rail (341) and an adjusting cylinder (342) arranged on the mounting seat (31). The adjusting cylinder (342) is electrically connected to the control system. The adjusting frame (33) is arranged on the piston rod of the adjusting cylinder (342), and the adjusting frame (33) is slidably matched with the guide rail (341).

3. An ultrasonic surface defect detection device according to claim 1, characterized in that: The pipe taking component (4) includes a pipe taking seat (41) arranged between the mounting seat (31) and the pipe placing frame (2). The top surface of the pipe placing frame (2) for placing the steel pipe (1) is inclined towards the pipe taking seat (41) along the direction from top to bottom. A pipe taking shaft (42) parallel to the axis of the steel pipe (1) is rotatably arranged on the pipe taking seat (41). A pipe taking motor (43) electrically connected to the control system is arranged on the pipe taking seat (41). The pipe taking shaft (42) is coaxially arranged on the output shaft of the pipe taking motor (43). A plurality of pipe taking plates (44) are arranged on the pipe taking shaft (42) along its axial direction. A baffle (45) is arranged at one end of the pipe taking plate (44) close to the mounting seat (31), and a counterweight plate (46) with a sector-shaped cross section is arranged at the other end. When the baffle (45) resists the steel pipe (1) and transfers the steel pipe (1) between the directional wheel (and the angular wheel (35), the sector-shaped arc surface of the counterweight plate (46) is used to resist the steel pipe (1) on the pipe placing frame (2).

4. The ultrasonic surface defect detection device according to claim 3, characterized in that: A tube placement rack (2) is provided with a tube fixing and removing rack (6). A tube limiting rack (7) and a tube blocking rack (8) are vertically slidably arranged on the tube fixing and removing rack (6). The distance between the tube limiting rack (7) and the tube blocking rack (8) is greater than the diameter of the steel pipe (1) and less than 1.5 times the diameter of the steel pipe (1). A gear (9) is meshed between the tube limiting rack (7) and the tube blocking rack (8). The gear (9) is rotatably arranged on the tube fixing and removing rack (6). A pressing plate (10) is arranged on the tube blocking rack (8). The pressing plate (10) is used for abutting against the counterweight plate (46). A return compression spring (11) is propped between the side of the pressing plate (10) facing away from the counterweight plate (46) and the tube fixing and removing rack (6). When the pressing plate (10) squeezes the return compression spring (11) to the lowest position, the tube blocking rack (8) releases the steel pipe (1) on the side close to the counterweight plate (46). At the same time, the tube limiting rack (7) rises and is inserted between two steel pipes (1).

5. The ultrasonic surface defect detection device according to claim 3, characterized in that: Buffer rubber plates (12) are arranged on the counterweight plate (46), the tube removing plate (44) and the baffle (45). The buffer rubber plates (12) are used for contacting the steel pipe (1).

6. An ultrasonic surface defect detection device according to claim 1, characterized in that: A pressing frame (13) is arranged beside the detection frame (52). A pressing cylinder (14) electrically connected to the control system is arranged on the pressing frame (13). A pressing wheel (15) is rotatably arranged on the piston rod of the pressing cylinder (14). The pressing wheel (15) is used for pressing the steel pipe (1) against the directional wheel (32) and the angular wheel (35).

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