Ultrasonic flaw detection device and method applied to curved surface workpiece welding seam

Abstract

The invention relates to the technical field of ultrasonic flaw detection, and discloses an ultrasonic flaw detection device and method applied to a curved surface workpiece weld seam, the device comprises a workbench, one side of the workbench is provided with an ultrasonic flaw detection mechanism, the ultrasonic flaw detection mechanism comprises a fixed cylinder, a weld seam coating assembly, a weld seam detection assembly and a coating driving assembly, firstly, a storage tank is transversely fixed to the inner side of a fixed cylinder, a weld joint is located outside the fixed cylinder, then a motor is started, the motor drives a first gear to rotate, the first gear drives an outer gear ring to rotate when rotating, the outer gear ring drives a first annular plate when rotating, and the first annular plate drives a weld joint scanner and a detection head to rotate around the peripheral side of the storage tank when rotating; and therefore, ultrasonic flaw detection on the weld joints circumferentially arranged on the storage tank is realized, the ultrasonic flaw detection on the weld joints circumferentially arranged on the storage tank does not need to be carried out by manually rotating around the storage tank by a circle, the labor amount of workers is reduced, and the automation degree is improved.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic flaw detection technology, and specifically to an ultrasonic flaw detection device and method for weld seams of curved workpieces. Background Technology

[0002] Ultrasonic testing of welds is a non-destructive testing method that uses ultrasonic waves to inspect welds. It involves emitting ultrasonic waves into the weld and receiving the reflected signals to detect defects such as cracks, porosity, and slag inclusions.

[0003] In the existing technology, during the production of cylindrical iron containers, it is often necessary to perform ultrasonic testing on the welds that are arranged around the circumference of the iron container. Workers usually perform the testing manually. However, since the iron container is cylindrical, the welds arranged around the circumference of the iron container need to be tested around the entire container, which increases the workload of the workers and results in a low degree of automation. Summary of the Invention

[0004] Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides an ultrasonic flaw detection device and method for welds on curved workpieces, which can effectively solve the technical problem that in the prior art, workers need to manually perform ultrasonic flaw detection around the circumferential welds of cylindrical iron containers, which increases the workload of workers and has a low degree of automation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides an ultrasonic flaw detection device and method for welds on curved workpieces, comprising a worktable, a motor fixedly installed inside the worktable, a gear fixedly connected to the end of the motor's output shaft located on the outside of the worktable, an assembly plate and an L-shaped plate fixedly connected to the outside of the worktable; an ultrasonic flaw detection mechanism is provided on one side of the worktable, the ultrasonic flaw detection mechanism including a fixed cylinder, a weld coating assembly, a weld detection assembly, and a coating drive assembly, the outer circumferential surface of the fixed cylinder being fixedly connected to the inner side of the assembly plate; the weld coating assembly including a circular ring plate and a rotating rod, the circular ring plate being rotatably connected to the outer circumferential surface of the fixed cylinder, an external gear ring being fixedly connected to the outer side of the circular ring plate, and the gear meshing with the external gear ring; the weld detection assembly including a connecting plate and a pulley, two straight plates being fixedly connected to one side of the connecting plate, one side of the straight plates being fixedly connected to the circular ring plate, and a weld scanner and a probe being fixedly connected to one side of the connecting plate.

[0006] Furthermore, the outer circumferential surface of the rotating rod is rotatably connected to the annular plate, and a T-shaped plate is fixedly connected to the outer circumferential surface of the rotating rod. A spring is connected to one side of the T-shaped plate, and a telescopic rod is provided on the inner side of the spring. A brush plate is connected to the end of the spring away from the T-shaped plate, and brush bristles are provided on the side of the brush plate away from the spring. An arc plate is fixedly connected to the side of the T-shaped plate near the spring, and an arc plate is fixedly connected to the side of the brush plate near the spring. A straight rod is fixedly connected to one side of the annular plate, and a ball is rotatably mounted on the ring side of the straight rod.

[0007] Furthermore, a liquid storage tank is fixedly connected to one side of the connecting plate, and a U-shaped piston plate is slidably connected inside the liquid storage tank. A hollow tube is fixedly connected to one side of the liquid storage tank, and a hollow tube is fixedly connected to the end of the hollow tube away from the liquid storage tank. A water spray plate is fixedly connected to the end of the hollow tube away from the hollow tube. A compression space is formed between the side of the U-shaped piston plate near the hollow tube and the inner wall of the liquid storage tank. A connecting rod is fixedly connected to the side of the U-shaped piston plate away from the compression space, and a loop ring is fixedly connected to the end of the connecting rod away from the U-shaped piston plate.

[0008] Furthermore, a connecting block is fixedly connected to one side of the connecting plate near the liquid storage tank. A rotating rod two is rotatably mounted on the connecting block. An adjusting arm is fixedly connected to the outer circumference of the rotating rod two. A rotating rod is fixedly connected to the end of the adjusting arm away from the rotating rod two. The rotating rod is movably connected to the inner side of the loop. A pulley one is fixedly connected to the outer circumference of the rotating rod two. A pulley two is fixedly connected to the outer circumference of the rotating rod one. A belt is movably connected to the outer sides of both pulley one and pulley two.

[0009] Furthermore, the coating drive assembly includes a second annular plate, which is fixedly connected to one end of an L-shaped plate. A double-sided toothed ring is fixedly connected to one side of the second annular plate. An annular groove 1 and an annular groove 2 are formed on the side of the second annular plate near the double-sided toothed ring. A slide rod 1 is slidably connected to the inner wall of the annular groove 1, and a slide rod 2 is slidably connected to the inner wall of the annular groove 2. A gear 2 is fixedly connected to the outer circumference of the slide rod 1, and a gear 3 is fixedly connected to the outer circumference of the slide rod 2. The gear 2 is located inside the double-sided toothed ring and meshes with it, while the gear 3 is located outside the double-sided toothed ring and meshes with it.

[0010] Furthermore, a magnetic plate is fixedly connected to the outer circumference of the slide rod one, and two magnetic plates are fixedly connected to the side of the annular plate two near the double-sided toothed ring. The magnetic plates one and two are opposite magnetic poles and attract each other. A triangular hole one is opened on one end face of the slide rod one, and a magnetic plate three is arranged in the triangular hole one. A triangular through groove one is opened inside the rotating rod one, and a triangular rod one is slidably connected to the inner side of the triangular through groove one. A magnetic plate four is arranged at one end of the triangular rod one, and a magnetic plate five is arranged at the other end of the triangular rod one. The magnetic plates three and four are opposite magnetic poles and attract each other. A limit plate one is fixedly connected to the circumference of the triangular rod one.

[0011] Furthermore, a magnetic plate six is ​​fixedly connected to the outer circumference of the slide rod two, and two magnetic plates seven are fixedly connected to one side of the annular plate two near the double-sided toothed ring. The magnetic plates six and seven are opposite magnetic poles and attract each other. A triangular hole two is opened on one end face of the slide rod two, and a magnetic plate eight is arranged in the triangular hole two. A triangular through groove two is opened inside the rotating rod two, and a triangular rod two is slidably connected to the inner side of the triangular through groove two. A magnetic plate nine is arranged at one end of the triangular rod two, and a magnetic plate ten is arranged at the other end of the triangular rod two. The magnetic plates eight and nine are opposite magnetic poles and attract each other. A limit plate two is fixedly connected to the circumference of the triangular rod two.

[0012] Furthermore, a storage tank is fixedly connected to both sides of the liquid storage tank, and the two storage tanks are in opposite vertical directions. The inside of the storage tank is connected to the compression space. A rectangular tube is fixedly connected to one side of the storage tank. A guide tube one is fixedly connected to the inner wall of the storage tank. A guide tube two is slidably connected to the inner side of the guide tube one. A sealing plate is fixedly connected to the end of the guide tube two away from the guide tube one. A spring two is connected to the side of the sealing plate near the guide tube two. The end of the spring two away from the sealing plate is connected to the inner wall of the storage tank. The spring two is located inside the guide tube one and the guide tube two.

[0013] Furthermore, a liquid inlet assembly is provided on the outer surface of the fixed cylinder. The liquid inlet assembly includes two electric telescopic rods, which are respectively fixedly installed on the upper and lower sides of the fixed cylinder. The output end of the electric telescopic rod is fixedly connected to a mounting plate, and a liquid inlet pipe is fixedly connected to the mounting plate. One end of the liquid inlet pipe is fixedly connected to a telescopic flexible tube, and the end of the telescopic flexible tube away from the liquid inlet pipe is fixedly connected to an infusion pipe. A strong magnetic plate and a push rod are fixedly connected to one side of the mounting plate located on the upper side of the fixed cylinder. The strong magnetic plate and the magnetic plate are opposite magnetic poles and attract each other. A strong magnetic rod and a push block are fixedly connected to one side of the mounting plate located on the lower side of the fixed cylinder. The strong magnetic rod and the magnetic plate are opposite magnetic poles and attract each other. A slot is opened at the end of the liquid inlet pipe away from the telescopic flexible tube.

[0014] An ultrasonic flaw detection method for welds on curved workpieces is disclosed. The method further includes a storage tank and a weld. First, the storage tank is horizontally fixed inside a fixed cylinder, and the weld is located outside the fixed cylinder. Then, a motor is started, and the motor drives an external gear ring to rotate through a gear, which in turn drives a circular plate to rotate. When the circular plate rotates, it drives the weld scanner and probe head to rotate around the storage tank for one revolution, thereby realizing ultrasonic flaw detection of the welds circumferentially located on the storage tank.

[0015] The technical solution provided by this invention has the following advantages compared with the prior art: 1. The present invention provides an ultrasonic flaw detection device and method for weld seams of curved workpieces. By setting an ultrasonic flaw detection mechanism on one side of a worktable, a storage tank is first horizontally fixed inside a fixed cylinder, with the weld seam located outside the fixed cylinder. Then, a motor is started, driving a gear to rotate. The rotation of the gear drives an outer gear ring, which in turn drives a circular plate. The rotation of the circular plate causes the weld seam scanner and probe to rotate around the circumference of the storage tank, thereby enabling ultrasonic flaw detection of the circumferential weld seam of the storage tank. This eliminates the need for manual rotation around the storage tank to perform ultrasonic flaw detection, reducing the workload of workers and increasing the degree of automation. It solves the technical problem in the prior art where workers need to manually rotate around a cylindrical iron container to perform ultrasonic flaw detection of the circumferential weld seam, increasing the workload and resulting in a low degree of automation.

[0016] 2. The present invention provides an ultrasonic flaw detection device and method for weld seams of curved workpieces. By setting up an ultrasonic flaw detection mechanism, the storage tank is first horizontally fixed inside the fixed cylinder, with the weld seam located between two annular plates. Then, a triangular rod is inserted into a triangular hole to combine the rotating rod and the sliding rod into a whole. Then, the motor is started to rotate the brush plate around the circumference of the weld seam. At the same time, the forward rotation of the rotating rod will drive the brush plate to rotate forward around the center line of the rotating rod, thereby cleaning the weld seam with the brush bristles. Removing impurities, oxide scale, welding slag, etc. from the surface of the weld seam can reduce unnecessary reflection and scattering signals, improve the coupling effect of the probe, and ensure good acoustic contact between the probe and the weld seam, thereby improving the transmission efficiency of ultrasonic waves and improving the sensitivity and accuracy of ultrasonic flaw detection.

[0017] 3. The present invention provides an ultrasonic flaw detection device and method for weld seams of curved workpieces. By setting up an ultrasonic flaw detection mechanism, a second rotating rod rotates synchronously with a first rotating rod. The rotation of the second rotating rod drives the adjusting arm to rotate, causing the loop ring to move linearly back and forth, which in turn causes the U-shaped piston plate to move linearly back and forth. This causes the U-shaped piston plate to reciprocate and compress the detection medium within the space. Two water spray plates then spray the detection medium onto the brush bristles. Since the brush bristles rotate around the center line of the first rotating rod, this promotes the upward circumferential flow of the detection medium in the weld seam, offsetting some of the gravity acting on the detection medium and slowing its downward flow. This increases the accuracy of the detection head's results and further improves the sensitivity and accuracy of ultrasonic flaw detection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an ultrasonic flaw detection device for weld seams of curved workpieces according to the present invention; Figure 2 for Figure 1 Enlarged structural diagram of part A in the middle Figure 3 for Figure 1 Another perspective of the three-dimensional structure diagram; Figure 4 This is a three-dimensional structural diagram of the ultrasonic flaw detection mechanism of the present invention; Figure 5 for Figure 4 A magnified structural diagram of section B in the middle; Figure 6 for Figure 4 A magnified structural diagram of section C in the middle; Figure 7 for Figure 4 Another perspective of the three-dimensional structure diagram; Figure 8 for Figure 7 A magnified structural diagram of part D in the middle; Figure 9 for Figure 7 A magnified structural diagram of section E in the middle; Figure 10 This is a three-dimensional structural schematic diagram of the weld coating assembly of the present invention; Figure 11 for Figure 10A magnified structural diagram of section G in the middle; Figure 12 This is a three-dimensional structural diagram of the rotating rod of the present invention; Figure 13 This is a three-dimensional structural schematic diagram of the weld inspection component of the present invention; Figure 14 for Figure 13 Another perspective of the three-dimensional structure diagram; Figure 15 This is a three-dimensional structural diagram of the rotating rod II of the present invention; Figure 16 This is a schematic diagram of the internal structure of the liquid storage tank of the present invention; Figure 17 This is a schematic diagram of the internal structure of the liquid storage tank of the present invention; Figure 18 This is a three-dimensional structural diagram of the connection between the guide tube 1, guide tube 2, sealing plate, and spring 2 of the present invention. Figure 19 This is a three-dimensional structural diagram of the connection between the weld coating component and the weld inspection component of the present invention; Figure 20 for Figure 19 A magnified structural diagram of section H in the middle; Figure 21 This is a three-dimensional structural schematic diagram of the coating driving component of the present invention; Figure 22 for Figure 21 A magnified structural diagram of section I in the middle; Figure 23 for Figure 21 The front view; Figure 24 for Figure 23 A magnified structural diagram of section J in the middle; Figure 25 This is a three-dimensional structural diagram of the liquid inlet assembly of the present invention; Figure 26 for Figure 23 A magnified structural diagram of the middle K section; Figure 27 for Figure 23 A magnified structural diagram of the area at point L.

[0020] The labels in the diagram represent: 1. Workbench; 2. Ultrasonic flaw detection mechanism; 3. Fixed cylinder; 4. Weld coating assembly; 5. Weld inspection assembly; 6. Coating drive assembly; 7. Liquid inlet assembly; 8. Storage tank; 81. Weld seam; 9. Circular ring plate - clockwise rotation direction; 10. Rotating rod - counterclockwise rotation direction; 11. Gear -; 12. Assembly plate; 13. L-shaped plate; 41. Circular ring plate -; 42. External gear ring; 43. Rotating rod -; 44. T-shaped plate; 45. Spring -; 46. Telescopic rod; 47. Brush plate; 48. Brush bristles; 49. 410. Arc Plate 1; 411. Straight Rod; 412. Sphere; 413. Triangular Through Slot 1; 414. Triangular Rod 1; 415. Magnetic Plate 4; 416. Magnetic Plate 5; 417. Limiting Plate 1; 51. Connecting Plate; 52. Straight Plate; 53. Weld Scanner; 54. Probe Head; 55. Liquid Storage Tank; 56. U-Shaped Piston Plate; 57. Hollow Tube 1; 58. Hollow Tube 2; 59. Water Spray Plate; 510. Extrusion Space; 511. Connecting Rod; 512. Ring; 513. Connecting Block; 514. Rotating Rod 2; 51 5. Adjusting arm; 516. Rotating rod; 517. Pulley 1; 518. Pulley 2; 519. Belt; 520. Triangular groove 2; 521. Triangular rod 2; 522. Magnetic plate 9; 523. Magnetic plate 10; 524. Limiting plate 2; 525. Liquid storage tank; 526. Rectangular tube; 527. Guide tube 1; 528. Guide tube 2; 529. Sealing plate; 530. Spring 2; 531. Nozzle; 532. Sealing space; 533. Through hole 1; 534. Through hole 2; 535. Through groove; 536. Through hole 3; 61. Circular 62. Ring plate 2; 63. Double-sided toothed ring; 64. Annular groove 1; 65. Annular groove 2; 66. Slide rod 1; 67. Slide rod 2; 68. Gear 2; 69. Gear 3; 60. Magnetic plate 1; 611. Magnetic plate 2; 612. Triangular hole 1; 613. Magnetic plate 6; 614. Magnetic plate 7; 615. Triangular hole 2; 71. Electric telescopic rod; 72. Mounting plate; 73. Inlet pipe; 74. Telescopic hose; 75. Infusion pipe; 76. High-strength magnetic plate; 77. Push rod; 78. High-strength magnetic rod; 79. Push block; 710. Groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments. Example

[0023] Please see Figures 1-27 An ultrasonic flaw detection device for weld seams of curved workpieces includes a worktable 1, which is hollow inside. A motor is fixedly installed inside the worktable 1, and the end of the motor's output shaft extends out of the worktable 1. A gear 11 is fixedly connected to the end of the motor's output shaft. The gear 11 is located on the outside of the worktable 1. An assembly plate 12 and an L-shaped plate 13 are fixedly connected to the outside of the worktable 1.

[0024] An ultrasonic flaw detection mechanism 2 is installed on one side of the workbench 1. The ultrasonic flaw detection mechanism 2 includes a fixed cylinder 3, a weld coating assembly 4, and a weld detection assembly 5. The fixed cylinder 3 is horizontally positioned, and its outer circumferential surface is fixedly connected to the inner side of the assembly plate 12. The fixed cylinder 3 is inserted horizontally through the assembly plate 12. The storage tank 8 is cylindrical and made of steel. During the production and use of the storage tank 8, there are circumferentially arranged weld seams 81 on the outer surface of the storage tank 8, which can firmly fix the storage tank 8 to the inner side of the fixed cylinder 3 laterally.

[0025] The weld coating assembly 4 includes a circular ring plate 41 and an external gear ring 42. The inner side of the circular ring plate 41 is rotatably connected to the outer circumferential surface of the fixed cylinder 3, and the outer side of the circular ring plate 41 is fixedly connected to the external gear ring 42. The external gear ring 42 is located in the middle of the outer ring side of the circular ring plate 41. The circular ring plate 41 rotates together with the external gear ring 42. The gear 11 meshes with the external gear ring 42, and the two end faces of the gear 11 are coplanar with the two end faces of the external gear ring 42.

[0026] The weld inspection assembly 5 includes a connecting plate 51, a straight plate 52, a weld scanner 53, and a probe 54. Two straight plates 52 are fixedly connected to one side of the connecting plate 51, and one side of each straight plate 52 is fixedly connected to a circular ring plate 41. The weld scanner 53 and the probe 54 are fixedly connected to one side of the connecting plate 51. The weld scanner 53 is used to determine the location of the weld, and the probe 54 is used to inspect the weld. Both the weld scanner 53 and the probe 54 are existing devices, and their structures will not be described in detail here.

[0027] In the existing technology, during the production of cylindrical iron containers, it is often necessary to perform ultrasonic testing on the welds that are arranged around the circumference of the iron container. Workers usually perform the testing manually. However, since the iron container is cylindrical, the welds arranged around the circumference of the iron container need to be tested around the entire container, which increases the workload of the workers and results in a low degree of automation.

[0028] This invention also includes an ultrasonic flaw detection method for welds on curved workpieces. First, the storage tank 8 is horizontally fixed inside the fixed cylinder 3, with the weld 81 located outside the fixed cylinder 3. Then, the motor is started, driving gear 11 to rotate. When gear 11 rotates, it drives the outer gear ring 42 to rotate. When the outer gear ring 42 rotates, it drives the annular plate 41. When the annular plate 41 rotates, it drives the weld scanner 53 and the probe head 54 to rotate around the circumference of the storage tank 8. This enables ultrasonic flaw detection of the circumferential weld 81 on the storage tank 8, eliminating the need for manual rotation around the storage tank 8 to perform ultrasonic flaw detection on the circumferential weld 81. This reduces the workload of workers, improves the degree of automation, and solves the technical problem in the prior art where workers need to manually rotate around the iron container to perform ultrasonic flaw detection on the circumferential weld of the cylindrical iron container, which increases the workload of workers and has a low degree of automation. Example

[0029] Please see Figures 1-27 Compared with Embodiment 1, this embodiment differs from Embodiment 1 in that: The ultrasonic flaw detection mechanism 2 also includes a coating drive assembly 6 and a liquid inlet assembly 7. The weld coating assembly 4 also includes a rotating rod 43, a T-shaped plate 44, a spring 45, a telescopic rod 46, a brush plate 47, brush bristles 48, an arc plate 49, an arc plate 2 410, a straight rod 411, a ball 412, a triangular through groove 413, a triangular rod 414, a magnetic plate 415, a magnetic plate 5 416, and a limiting plate 417.

[0030] A rotating rod 43 is horizontally positioned, with its outer circumference rotatably connected to a circular ring plate 41. The rotating rod 43 passes horizontally through the circular ring plate 41. A T-shaped plate 44 is fixedly connected to the outer circumference of the rotating rod 43. A spring 45 is connected to one side of the T-shaped plate 44, and a brush plate 47 is connected to the end of the spring 45 away from the T-shaped plate 44. A telescopic rod 46 is provided inside the spring 45, with one end fixedly connected to the T-shaped plate 44 and the other end fixedly connected to the brush plate 47.

[0031] The brush plate 47 has bristles 48 on the side away from the spring 45. The bristles 48 are made of a soft, elastic material and can straighten when not under force. The T-shaped plate 44 is fixedly connected to the side near the spring 45 with an arc plate 49, and the brush plate 47 is fixedly connected to the side near the spring 45 with an arc plate 410. The arc convex surface of the arc plate 49 is opposite to the arc convex surface of the arc plate 410.

[0032] A straight rod 411 is fixedly connected to one side of the annular plate 41. A ball 412 is rotatably mounted on the annular side of the straight rod 411. The ball 412 can rotate and can be rotatably inserted between the arcuate convex surface of the arcuate plate 49 and the arcuate convex surface of the arcuate plate 410. Two baffles can be set around the straight rod 411, with the two baffles located on both sides of the ball 412, so that the ball 412 will not move along the length of the straight rod 411.

[0033] The weld coating assembly 4 and the weld inspection assembly 5 are an integral structure that rotates synchronously. The weld inspection assembly 5 also includes a liquid storage tank 55, a U-shaped piston plate 56, a hollow tube 1 57, a hollow tube 2 58, a water spray plate 59, a compression space 510, a connecting rod 511, a loop ring 512, a connecting block 513, a rotating rod 2 514, an adjusting arm 515, a rotating rod 516, a pulley 1 517, a pulley 2 518, a belt 519, a triangular through groove 2 520, a triangular rod 2 521, a magnetic plate 9 522, a magnetic plate 10 523, a limiting plate 2 524, a liquid storage tank 525, a rectangular tube 526, a guide tube 1 527, a guide tube 2 528, a sealing plate 529, a spring 2 530, a nozzle 531, a sealing space 532, a through hole 1 533, a through hole 2 534, a through groove 535, and a through hole 3 536.

[0034] A liquid storage tank 55 is fixedly connected to one side of the connecting plate 51. A U-shaped piston plate 56 is slidably connected inside the liquid storage tank 55. A hollow tube 57 is fixedly connected to one side of the liquid storage tank 55. A compression space 510 is formed between the side of the U-shaped piston plate 56 near the hollow tube 57 and the inner wall of the liquid storage tank 55. A through hole 533 is provided on one side of the liquid storage tank 55, and the compression space 510 communicates with the inside of the hollow tube 57 through the through hole 533.

[0035] Hollow tube 1 57 is fixedly connected to hollow tube 2 58 at the end away from the liquid storage tank 55, and the interior of hollow tube 1 57 is connected to the interior of hollow tube 2 58. Hollow tube 2 58 is fixedly connected to spray plate 59 at the end away from hollow tube 1 57, and the interior of spray plate 59 is hollow. The interior of hollow tube 2 58 is connected to the interior of spray plate 59. The nozzles 531 on the two spray plates 59 are arranged opposite each other. Brush plate 47 can rotate with rotating rod 1 43 to one side between the two spray plates 59, and brush bristles 48 can rotate with brush plate 47 to the space between the two spray plates 59.

[0036] A connecting rod 511 is fixedly connected to the side of the U-shaped piston plate 56 away from the compression space 510. The connecting rod 511 passes through the liquid storage tank 55, and a loop ring 512 is fixedly connected to the end of the connecting rod 511 away from the U-shaped piston plate 56. A sealed space 532 is formed between the side of the U-shaped piston plate 56 near the connecting rod 511 and the inner wall of the liquid storage tank 55, so that the detection medium will not flow into the sealed space 532.

[0037] A connecting block 513 is fixedly connected to one side of the connecting plate 51 near the liquid storage tank 55. The outer circumferential surface of the rotating rod 514 is rotatably connected to the connecting block 513. The rotating rod 514 is arranged laterally and passes laterally through the connecting block 513. An adjusting arm 515 is fixedly connected to the outer circumferential surface of the rotating rod 514. A rotating rod 516 is fixedly connected to the end of the adjusting arm 515 away from the rotating rod 514. The rotating rod 516 is movably connected to the inner side of the loop ring 512.

[0038] A pulley 517 is fixedly connected to the outer circumference of the rotating rod 514, and a pulley 518 is fixedly connected to the outer circumference of the rotating rod 43. A belt 519 is movably connected to the outer sides of the pulleys 517 and 518. The pulleys 517 and 518 are connected by a drive belt 519, thereby realizing the synchronous rotation of the rotating rod 43 and the rotating rod 514.

[0039] Both sides of the liquid storage tank 55 are fixedly connected to a liquid storage tank 525, and the two liquid storage tanks 525 are oriented in opposite directions. A set of opposite inner sidewalls of the liquid storage tank 55 are provided with a second through hole 534, and the inner sidewall of the liquid storage tank 525 is provided with a third through hole 536. The interior of the liquid storage tank 525 is connected to the extrusion space 510 (the second through hole 534 and the third through hole 536 are interconnected).

[0040] A through groove 535 is provided on the inner wall of the liquid storage tank 525. A rectangular tube 526 is fixedly connected to one side of the liquid storage tank 525, and the interior of the rectangular tube 526 is connected to the interior of the liquid storage tank 525 through the through groove 535. A guide tube 1 527 is fixedly connected to the inner wall of the liquid storage tank 525. A guide tube 2 528 is slidably connected to the inner side of the guide tube 1 527. A sealing plate 529 is fixedly connected to the end of the guide tube 2 528 away from the guide tube 1 527. A spring 2 530 is connected to the side of the sealing plate 529 near the guide tube 2 528. The end of the spring 2 530 away from the sealing plate 529 is connected to the inner wall of the liquid storage tank 525. The spring 2 530 is located inside the guide tube 1 527 and the guide tube 2 528. When the second spring 530 is in its natural state, the sealing plate 529 abuts against the inner wall of the liquid storage tank 525 to seal the through groove 535, so that the inside of the rectangular tube 526 cannot be connected to the inside of the liquid storage tank 525.

[0041] The coating drive assembly 6 includes a second annular plate 61, a double-sided toothed ring 62, a first annular groove 63, a second annular groove 64, a first slide rod 65, a second slide rod 66, a second gear 67, a third gear 68, a first magnetic plate 69, a second magnetic plate 610, a first triangular hole 611, a sixth magnetic plate 612, a seventh magnetic plate 613, a second triangular hole 614, a third magnetic plate, and a eighth magnetic plate.

[0042] The second annular plate 61 is fixedly connected to the end of the L-shaped plate 13 away from the worktable 1. The lower part of one side of the straight plate 52 is fixedly connected to the side of the first annular plate 41 near the second annular plate 61. The straight plate 52 is located between the first annular plate 41 and the connecting plate 51. Therefore, when the first annular plate 41 rotates, the weld detection component 5 rotates with the first annular plate 41. The motor is located on the side of the first annular plate 41 away from the second annular plate 61. The output shaft of the motor and the gear 11 will not block the weld detection component 5. A double-sided toothed ring 62 is fixedly connected to one side of the second annular plate 61. Annular groove 63 and annular groove 64 are provided on the side of the second annular plate 61 near the double-sided toothed ring 62. Both annular groove 63 and annular groove 64 are annular.

[0043] One end of the slide rod 65 is slidably connected to the inner wall of the annular groove 63 via a bearing. The slide rod 65 can slide along the path of the annular groove 63 while also rotating. A gear 67 is fixedly connected to the outer circumference of the slide rod 65, and the gear 67 is located on the outside of the annular groove 63.

[0044] One end of slide rod 2 66 is slidably connected to the inner wall of annular groove 2 64 via a bearing. Slide rod 2 66 can slide along the path of annular groove 2 64 while also rotating. Gear 3 68 is fixedly connected to the outer circumference of slide rod 2 66, and gear 3 68 is located outside annular groove 2 64. Gear 2 67 is located inside double-sided gear ring 62 and meshes with it, while gear 3 68 is located outside double-sided gear ring 62 and meshes with it.

[0045] A magnetic plate 69 is fixedly connected to the outer circumference of the slide rod 65. Two magnetic plates 610 are fixedly connected to one side of the annular plate 61 near the double-sided toothed ring 62. The two magnetic plates 610 are located on the upper and lower sides of the annular groove 63, respectively. Magnetic plates 69 and 610 are opposite magnetic poles and attract each other. When the slide rod 65 slides along the annular groove 63 to its highest point, magnetic plates 69 and the upper magnetic plate 610 of the annular groove 63 magnetically attract each other, restricting the sliding of the slide rod 65 and thus restricting the movement of the gear 67. When the slide rod 65 slides along the annular groove 63 to its lowest point, magnetic plates 69 and the lower magnetic plate 610 of the annular groove 63 magnetically attract each other, restricting the sliding of the slide rod 65 and thus restricting the movement of the gear 67.

[0046] A triangular hole 611 is provided on one end face of the sliding rod 65, and a magnetic plate 3 is provided inside the triangular hole 611. A triangular through groove 413 is provided inside the rotating rod 43, and a triangular rod 414 is slidably connected to the inner side of the triangular through groove 413. The triangular rod 414 will not slide out of the triangular through groove 413 completely. The triangular rod 414 is in close contact with the inner wall of the triangular through groove 413, so that the triangular rod 414 rotates synchronously with the rotating rod 43. A magnetic plate 415 is provided at one end of the triangular rod 414, and a magnetic plate 416 is provided at the other end of the triangular rod 414. The magnetic plates 3 and 415 are opposite magnetic poles and attract each other. A limit plate 417 is fixedly connected to the periphery of the triangular rod 414.

[0047] A magnetic plate 612 is fixedly connected to the outer circumference of the slide bar 2 66. Two magnetic plates 7 613 are fixedly connected to one side of the annular plate 2 61 near the double-sided toothed ring 62. The two magnetic plates 7 613 are located on the upper and lower sides of the annular groove 2 64, respectively. The magnetic plates 612 and 7 613 are opposite magnetic poles and attract each other.

[0048] A triangular hole 614 is provided on one end face of the sliding rod 66, and a magnetic plate 8 is installed inside the triangular hole 614. A triangular through groove 520 is provided inside the rotating rod 514, and a triangular rod 521 is slidably connected to the inner side of the triangular through groove 520. The triangular rod 521 will not slide out of the triangular through groove 520 completely. The triangular rod 521 is in close contact with the inner wall of the triangular through groove 520, so that the triangular rod 521 rotates synchronously with the rotating rod 514. A magnetic plate 9 522 is provided at one end of the triangular rod 521, and a magnetic plate 10 523 is provided at the other end of the triangular rod 521. The magnetic plates 8 and 9 522 are opposite magnetic poles and attract each other. A limit plate 2 524 is fixedly connected to the periphery of the triangular rod 521. The rotating rod 514 and the triangular rod 521 are always located on the side of the annular plate 41 close to the annular plate 61.

[0049] The outer surface of the fixed cylinder 3 is provided with a liquid inlet assembly 7, which includes an electric telescopic rod 71, a mounting plate 72, a liquid inlet pipe 73, a telescopic hose 74, an inlet pipe 75, a strong magnetic plate 76, a push rod 77, a strong magnetic bar 78, a push block 79, and a slot 710. There are two electric telescopic rods 71, which are horizontally arranged and fixedly installed on the upper and lower sides of the fixed cylinder 3, respectively.

[0050] Each electric telescopic rod 71 has a mounting plate 72 fixedly connected to its output end, and the mounting plate 72 is vertically arranged. Each mounting plate 72 has a liquid inlet pipe 73 fixedly connected to it, and the liquid inlet pipe 73 is horizontally arranged, passing through the mounting plate 72. The liquid inlet pipe 73 is made of stainless steel, PVC, or other rigid materials. One end of the liquid inlet pipe 73 is fixedly connected to a telescopic hose 74, and the end of the liquid inlet pipe 73 away from the telescopic hose 74 has a slot 710. The end of the telescopic hose 74 away from the liquid inlet pipe 73 is fixedly connected to a delivery pipe 75, and the end of the delivery pipe 75 away from the telescopic hose 74 is connected to an external device for conveying the detection medium, preferably an aqueous or oily coupling agent.

[0051] A powerful magnetic plate 76 and a push rod 77 are fixedly connected to one side of the mounting plate 72 located on the upper side of the fixed cylinder 3. The powerful magnetic plate 76 and magnetic plate 416 are opposite magnetic poles and attract each other. The magnetic attraction force of the powerful magnetic plate 76 on magnetic plate 416 is much greater than the magnetic attraction force between magnetic plate 3 and magnetic plate 415. A powerful magnetic rod 78 and a push block 79 are fixedly connected to one side of the mounting plate 72 located on the lower side of the fixed cylinder 3. The powerful magnetic rod 78 and magnetic plate 523 are opposite magnetic poles and attract each other. The magnetic attraction force of the powerful magnetic rod 78 on magnetic plate 523 is much greater than the magnetic attraction force between magnetic plate 8 and magnetic plate 9 522.

[0052] The rest of the structure is the same as in Example 1.

[0053] Working principle and usage process of this invention: Step 1: First, fix the storage tank 8 horizontally inside the fixed cylinder 3, with the weld seam 81 located between the first annular plate 41 and the second annular plate 61 (at this time, the bristles 48 are bent and pressed against the weld seam 81); then insert the first triangular rod 414 into the first triangular hole 611 (and pull the second triangular rod 521 out of the second triangular hole 614), the third magnetic plate and the fourth magnetic plate 415 attract each other magnetically, thereby making the first triangular rod 414 fit tightly against the inner wall of the first triangular hole 611. This allows the triangular rod 414 and the sliding rod 65 to be combined into a single unit, and the rotating rod 43 to be combined into a single unit. Then, the motor is started, driving gear 11 to rotate. When gear 11 rotates, it drives the external gear ring 42 to rotate. When the external gear ring 42 rotates, it drives the circular ring plate 41 (rotating clockwise). When the circular ring plate 41 rotates, it drives the rotating rod 43 to rotate around the circumference of the weld seam 81, thereby causing the brush... Plate 47 rotates around the circumference of weld seam 81. Simultaneously, since rotating rod 43 and sliding rod 65 are integrated into one unit, the rotation of rotating rod 43 will drive sliding rod 65 to slide along annular groove 63. The sliding of sliding rod 65 along annular groove 63 will drive gear 67 to rotate around the inner circumference of double-sided toothed ring 62, thereby causing gear 67 to rotate in the forward direction. The forward rotation of gear 67 will drive rotating rod 43 to rotate in the forward direction. The forward rotation of rotating rod 43 will drive brush plate 47 to rotate in the forward direction around the center line of rotating rod 43, thereby causing brush bristles 48 to clean weld seam 81. Removing impurities, oxide scale, welding slag, etc. from the surface of weld seam 81 can reduce unnecessary reflection and scattering signals, improve the coupling effect of probe head 54, and ensure good acoustic contact between probe head 54 and weld seam 81, thereby improving the transmission efficiency of ultrasonic waves and improving the sensitivity and accuracy of ultrasonic flaw detection. Step Two: After the brush bristles 48 clean the weld seam 81, the motor is first driven to rotate the rotating rod 43 to its highest position, then the motor is turned off. This causes the brush bristles 48 to move to its highest position (at this time, the brush bristles 48 are located between the two spray plates 59, and at the same time, the magnetic plate 69 and the magnetic plate 610 on the upper side of the annular groove 63 are magnetically attracted to each other, thus restricting the sliding of the sliding rod 65; the magnetic plate 612 and the magnetic plate 613 on the upper side of the annular groove 64 are magnetically attracted to each other, thus restricting the sliding of the sliding rod 66). Then, the electric telescopic rod 71 on the upper side of the fixed cylinder 3 is extended. The electric telescopic rod 71 drives the liquid inlet pipe 73 on the upper side of the fixed cylinder 3 to pass through the rectangular tube 526 and the through groove 535 and insert into the liquid storage tank 525, squeezing the sealing plate 529 and the second spring 530. At this time, the groove 710 is connected to the inside of the liquid storage tank 525. Then, the push rod 77 pushes the second triangular rod 521 into the second triangular hole 614. The magnetic plate 8 and the magnetic plate 9 522 attract each other, so that the second triangular rod 521 is tightly attached to the inner wall of the second triangular hole 614, thus making the second triangular rod 521 and the sliding rod 66 combine into a whole, and thus making the rotating rod 514 and the sliding rod 66 combine into a whole. Rod 2 66 is combined into a whole, and at this time, the strong magnetic plate 76 is in contact with the magnetic plate 5 416; then the detection medium is injected into the storage tank 525 through the infusion pipe 75, the telescopic hose 74, and the inlet pipe 73 in sequence. Finally, the detection medium is injected into the storage tank 525 through the slot 710 until both storage tanks 525 and the squeezing space 510 are completely filled with the detection medium (ensuring that the squeezing space 510 is always full of the detection medium), then the injection of the detection medium through the infusion pipe 75 is stopped; then the electric telescopic rod 71 is driven to shorten and reset, so that the inlet pipe 73 returns to its original position. The tube 526 is pulled out and reset, and the strong magnetic plate 76 is reset. Since the magnetic attraction of the strong magnetic plate 76 to the magnetic plate 416 is much greater than the magnetic attraction between the magnetic plate 3 and the magnetic plate 415, during the reset process, the strong magnetic plate 76 pulls the triangular rod 414 out of the triangular hole 611 through the magnetic attraction with the magnetic plate 416, so that the rotating rod 43 cannot be combined with the sliding rod 65 into a whole. At this time, the limiting plate 417 abuts against the rotating rod 43 to prevent the triangular rod 414 from being completely moved out of the triangular through slot 413. Step 3: Then, the motor drives the annular plate 41 to rotate clockwise, causing the rotating rod 43 to rotate from the highest point to the lowest point around the circumference of the weld seam 81. This causes the bristles 48 to rotate from top to bottom along the circumference of the weld seam 81, and consequently, the rotating rod 514 to rotate clockwise around the circumference of the weld seam 81. Simultaneously, since the rotating rod 514 and the sliding rod 66 are integrated, the rotation of the rotating rod 514 causes the sliding rod 66 to slide along the annular groove 64. The sliding of the sliding rod 66 along the annular groove 64 causes the gear 68 to rotate around the outer circumference of the double-sided gear ring 62, thus causing the gear 68 to rotate. The rotation of the gear 68 then causes the sliding rod 66 to rotate. This causes the second rotating rod 514 to rotate in the opposite direction, which in turn causes the first rotating rod 43 to rotate in the opposite direction. The reverse rotation of the first rotating rod 43 will cause the brush plate 47 to rotate clockwise around the center line of the first rotating rod 43, which in turn causes the bristles 48 to rotate clockwise around the center line of the first rotating rod 43. At the same time, the rotation of the second rotating rod 514 will cause the adjusting arm 515 to rotate, and the rotation of the adjusting arm 515 will cause the rotating rod 516 to rotate. The rotation of the rotating rod 516 will cause the loop ring 512 to move linearly back and forth. The linear back and forth movement of the loop ring 512 will cause the connecting rod 511 to move linearly back and forth. The linear back and forth movement of the connecting rod 511 will cause the U-shaped piston plate 5 to move linearly back and forth. 6. The U-shaped piston plate 56 moves in a straight line, reciprocatingly squeezing the detection medium in the space 510. The detection medium passes sequentially through the first hollow tube 57 and the second hollow tube 58, and is finally sprayed out from the nozzles 531 on the two spray plates 59. When the brush plate 47 rotates clockwise around the center line of the rotating rod 43, causing the bristles 48 to rotate between the two spray plates 59, the U-shaped piston plate 56 squeezes the detection medium in the space 510 and sprays it onto the bristles 48 through the two spray plates 59. When the bristles 48 rotate between the two spray plates 59, the sphere 412 rotates and inserts into the arcuate convex surface of the arcuate plate 49 and the arcuate surface. Between the convex surfaces of plate 410, the arc plate 49 and the arc plate 410 are moved away from each other, so that the brush bristles 48 are completely located between the two spray plates 59, and the detection medium is fully sprayed onto the brush bristles 48. When the brush bristles 48 rotate out from between the two spray plates 59, the arc plate 49 and the arc plate 410 are reset. At the same time, since the brush bristles 48 rotate clockwise around the center line of the rotating rod 43, it will promote the upward flow of the detection medium in the circumference of the weld seam 81, so as to counteract part of the gravity of the detection medium, slow down the downward flow velocity of the detection medium, increase the accuracy of the detection results of the probe head 54, and further improve the sensitivity and accuracy of ultrasonic flaw detection. Step 4: When the motor drives the rotating rod 43 to rotate around the weld seam 81 to its lowest point, the motor is turned off, causing the brush bristles 48 to move to their lowest point (at this time, the brush bristles 48 are located between the two spray plates 59; simultaneously, the magnetic plate 69 and the magnetic plate 610 on the lower side of the annular groove 63 are magnetically attracted to each other, thus restricting the sliding of the sliding rod 65; the magnetic plate 612 and the magnetic plate 613 on the lower side of the annular groove 64 are magnetically attracted to each other, thus restricting the sliding of the sliding rod 66). Then, the electric telescopic rod 71 on the lower side of the fixed cylinder 3 is driven to extend. The liquid inlet pipe 73 on the lower side of the fixed cylinder 3 is driven to pass through the rectangular tube 526 and the through groove 535 and be inserted into the liquid storage tank 525, pressing the sealing plate 529 and the second spring 530. At this time, the groove 710 is connected to the inside of the liquid storage tank 525. At this time, the push block 79 will push the triangular rod 414 to insert into the triangular hole 611. The magnetic plate 3 and the magnetic plate 415 attract each other, so that the triangular rod 414 and the inner wall of the triangular hole 611 are tightly fitted, and the triangular rod 414 and the slide rod 65 are combined into a whole, and the rotating rod 43 and the slide rod 65 are connected. 5. The components are combined into a whole, and at this time, the strong magnetic rod 78 is in contact with the magnetic plate 523. Then, the detection medium passes through the infusion tube 75, the telescopic hose 74, and the inlet tube 73 in sequence. Finally, the detection medium is injected into the storage tank 525 through the slot 710 until both storage tanks 525 and the squeezing space 510 are completely filled with the detection medium (ensuring that the squeezing space 510 is always full of the detection medium). Then, the injection of the detection medium through the infusion tube 75 is stopped. Then, the electric telescopic rod 71 is driven to shorten and reset, so that the inlet tube 73 is pulled out from the rectangular tube 526. And reset, the strong magnetic rod 78 resets. Since the magnetic attraction of the strong magnetic rod 78 to the magnetic plate 10 523 is much greater than the magnetic attraction between the magnetic plate 8 and the magnetic plate 9 522, during the reset process, the strong magnetic rod 78 pulls the triangular rod 2 521 out of the triangular hole 2 614 through the magnetic attraction with the magnetic plate 10 523, thereby preventing the rotating rod 2 514 from being combined with the sliding rod 2 66 into a whole. At this time, the limiting plate 2 524 abuts against the rotating rod 2 514 to prevent the triangular rod 2 521 from being completely moved out of the triangular through slot 2 520. Step 5: Then, the motor drives the annular plate 41 to rotate clockwise, causing the rotating rod 43 to rotate from the lowest point to the highest point around the circumference of the weld seam 81. This causes the bristles 48 to rotate from bottom to top along the circumference of the weld seam 81, and consequently, the rotating rod 514 to rotate from bottom to top along the circumference of the weld seam 81. Simultaneously, since the rotating rod 43 and the sliding rod 65 are integrated, the rotation of the rotating rod 43 causes the sliding rod 65 to slide along the annular groove 63. The sliding of the sliding rod 65 along the annular groove 63 causes the gear 67 to rotate around the inner circumference of the double-sided gear ring 62, thus causing the gear 67 to rotate. The rotation of the gear 67 then causes the sliding rod 65 to rotate. This causes the rotating rod 43 to rotate in the forward direction, which in turn causes the rotating rod 514 to rotate in the forward direction. The forward rotation of the rotating rod 43 will cause the brush plate 47 to rotate counterclockwise around the center line of the rotating rod 43, which in turn causes the bristles 48 to rotate counterclockwise around the center line of the rotating rod 43. At the same time, the rotation of the rotating rod 514 will cause the adjusting arm 515 to rotate, and the rotation of the adjusting arm 515 will cause the rotating rod 516 to rotate. The rotation of the rotating rod 516 will cause the loop ring 512 to move linearly back and forth. The linear back and forth movement of the loop ring 512 will cause the connecting rod 511 to move linearly back and forth. The linear back and forth movement of the connecting rod 511 will cause the U-shaped piston plate 5 to move linearly back and forth. 6. The U-shaped piston plate 56 moves in a straight line, reciprocatingly squeezing the detection medium in the space 510. The detection medium passes sequentially through the hollow tube 1 57 and the hollow tube 2 58, and is finally sprayed out from the nozzles 531 on the two spray plates 59. When the brush plate 47 rotates counterclockwise around the center line of the rotating rod 43, it causes the brush bristles 48 to rotate between the two spray plates 59. The U-shaped piston plate 56 then squeezes the detection medium in the space 510 and sprays it onto the brush bristles 48 through the two spray plates 59. When the brush bristles 48 rotate between the two spray plates 59, the sphere 412 rotates and inserts into the arcuate convex surface of the arcuate plate 49 and the arcuate surface. Between the convex surfaces of plate 410, the arc plate 49 and the arc plate 410 are moved away from each other, so that the brush bristles 48 are completely located between the two spray plates 59, thus allowing the detection medium to be fully sprayed onto the brush bristles 48. When the brush bristles 48 rotate out from between the two spray plates 59, the arc plate 49 and the arc plate 410 are reset. At the same time, since the brush bristles 48 rotate counterclockwise around the center line of the rotating rod 43, it will promote the upward flow of the detection medium in the circumference of the weld seam 81, so as to counteract part of the gravity of the detection medium, slow down the downward flow velocity of the detection medium, increase the accuracy of the detection results of the probe head 54, and further improve the sensitivity and accuracy of ultrasonic flaw detection.

[0054] In summary, by setting up the ultrasonic flaw detection mechanism 2, the storage tank 8 is first horizontally fixed inside the fixed cylinder 3, with the weld seam 81 located between the first annular plate 41 and the second annular plate 61. Then, the triangular rod 414 is inserted into the triangular hole 611, making the rotating rod 43 and the sliding rod 65 a whole. Then, the motor is started, and the brush plate 47 rotates around the circumference of the weld seam 81. At the same time, the forward rotation of the rotating rod 43 will drive the brush plate 47 to rotate forward around the center line of the rotating rod 43, thereby making the bristles 48 clean the weld seam 81. Removing impurities, oxide scale, welding slag, etc. from the surface of the weld seam 81 can reduce unnecessary reflection and scattering signals, improve the coupling effect of the detector head 54, and thus ensure good acoustic contact between the detector head 54 and the weld seam 81, thereby improving the ultrasonic flaw detection effect. The transmission efficiency of sound waves is improved, thereby enhancing the sensitivity and accuracy of ultrasonic flaw detection. By setting the rotating rod 2 514 to rotate synchronously with the rotating rod 1 43, the rotation of the rotating rod 2 514 will drive the adjusting arm 515 to rotate, which in turn causes the loop ring 512 to move linearly back and forth, which in turn causes the U-shaped piston plate 56 to move linearly back and forth, which in turn causes the U-shaped piston plate 56 to reciprocate and compress the detection medium in the space 510. Then, the two water spray plates 59 spray the detection medium onto the brush bristles 48. Since the brush bristles 48 rotate around the center line of the rotating rod 1 43, it will promote the upward circumferential flow of the detection medium in the weld seam 81, thereby offsetting part of the gravity on the detection medium, slowing down the downward flow velocity of the detection medium, increasing the accuracy of the detection results of the probe head 54, and further improving the sensitivity and accuracy of ultrasonic flaw detection.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrasonic flaw detection device for weld seams of curved workpieces, comprising a worktable (1), characterized in that: A motor is fixedly installed inside the workbench (1), and a gear (11) located on the outside of the workbench (1) is fixedly connected to the end of the output shaft of the motor. An assembly plate (12) and an L-shaped plate (13) are fixedly connected to the outside of the workbench (1). An ultrasonic flaw detection mechanism (2) is provided on one side of the workbench (1). The ultrasonic flaw detection mechanism (2) includes a fixed cylinder (3), a weld coating assembly (4), a weld detection assembly (5), and a coating drive assembly (6). The outer circumferential surface of the fixed cylinder (3) is fixedly connected to the inner side of the assembly plate (12). The weld coating assembly (4) includes a ring plate (41) and a rotating rod (43). The ring plate (41) is rotatably connected to the outer circumferential surface of the fixed cylinder (3). An external gear ring (42) is fixedly connected to the outer side of the ring plate (41). The gear (11) meshes with the external gear ring (42). The weld inspection assembly (5) includes a connecting plate (51) and a second pulley (518). Two straight plates (52) are fixedly connected to one side of the connecting plate (51). One side of the straight plate (52) is fixedly connected to a first ring plate (41). A weld scanner (53) and a probe (54) are fixedly connected to one side of the connecting plate (51).

2. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 1, characterized in that: The outer circumferential surface of the rotating rod (43) is rotatably connected to the annular plate (41). A T-shaped plate (44) is fixedly connected to the outer circumferential surface of the rotating rod (43). A spring (45) is connected to one side of the T-shaped plate (44). A telescopic rod (46) is provided on the inner side of the spring (45). A brush plate (47) is connected to the end of the spring (45) away from the T-shaped plate (44). Brush bristles (48) are provided on the side of the brush plate (47) away from the spring (45). An arc plate (49) is fixedly connected to the side of the T-shaped plate (44) near the spring (45). An arc plate (410) is fixedly connected to the side of the brush plate (47) near the spring (45). A straight rod (411) is fixedly connected to one side of the annular plate (41). A ball (412) is rotatably installed on the ring side of the straight rod (411).

3. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 2, characterized in that: A liquid storage tank (55) is fixedly connected to one side of the connecting plate (51). A U-shaped piston plate (56) is slidably connected inside the liquid storage tank (55). A hollow tube (57) is fixedly connected to one side of the liquid storage tank (55). A hollow tube (58) is fixedly connected to one end of the hollow tube (57) away from the liquid storage tank (55). A water spray plate (59) is fixedly connected to one end of the hollow tube (58) away from the hollow tube (57). A compression space (510) is formed between the side of the U-shaped piston plate (56) near the hollow tube (57) and the inner wall of the liquid storage tank (55). A connecting rod (511) is fixedly connected to one side of the U-shaped piston plate (56) away from the compression space (510). A loop ring (512) is fixedly connected to one end of the connecting rod (511) away from the U-shaped piston plate (56).

4. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 3, characterized in that: A connecting block (513) is fixedly connected to one side of the connecting plate (51) near the liquid storage tank (55). A rotating rod (514) is rotatably mounted on the connecting block (513). An adjusting arm (515) is fixedly connected to the outer circumference of the rotating rod (514). A rotating rod (516) is fixedly connected to the end of the adjusting arm (515) away from the rotating rod (514). The rotating rod (516) is movably connected to the inner side of the loop ring (512). A pulley (517) is fixedly connected to the outer circumference of the rotating rod (514). A pulley (518) is fixedly connected to the outer circumference of the rotating rod (43). A belt (519) is movably connected to the outer sides of the pulleys (517) and (518).

5. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 4, characterized in that: The coating drive assembly (6) includes a second annular plate (61), which is fixedly connected to one end of an L-shaped plate (13). A double-sided toothed ring (62) is fixedly connected to one side of the second annular plate (61). An annular groove 1 (63) and an annular groove 2 (64) are provided on the side of the second annular plate (61) near the double-sided toothed ring (62). A slide rod 1 (65) is slidably connected to the inner wall of the annular groove 1 (63). The inner wall of the sliding groove two (64) is slidably connected to the sliding rod two (66). The outer circumferential surface of the sliding rod one (65) is fixedly connected to the gear two (67). The outer circumferential surface of the sliding rod two (66) is fixedly connected to the gear three (68). The gear two (67) is located inside the double-sided gear ring (62) and meshes with the double-sided gear ring (62). The gear three (68) is located outside the double-sided gear ring (62) and meshes with the double-sided gear ring (62).

6. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 5, characterized in that: A magnetic plate 1 (69) is fixedly connected to the outer circumference of the slide rod 1 (65). Two magnetic plates 2 (610) are fixedly connected to one side of the annular plate 2 (61) near the double-sided toothed ring (62). The magnetic plates 1 (69) and 2 (610) are opposite magnetic poles and attract each other. A triangular hole 1 (611) is opened on one end face of the slide rod 1 (65). A magnetic plate 3 is arranged in the triangular hole 1 (611). The rotating rod 1 (43) The interior is provided with a triangular through groove (413), and a triangular rod (414) is slidably connected to the inner side of the triangular through groove (413). A magnetic plate (415) is provided at one end of the triangular rod (414), and a magnetic plate (416) is provided at the other end of the triangular rod (414). The magnetic plate (3) and the magnetic plate (415) are opposite magnetic poles and attract each other. A limiting plate (417) is fixedly connected to the periphery of the triangular rod (414).

7. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 6, characterized in that: A magnetic plate six (612) is fixedly connected to the outer circumference of the slide rod two (66). Two magnetic plates seven (613) are fixedly connected to one side of the annular plate two (61) near the double-sided toothed ring (62). The magnetic plates six (612) and seven (613) are opposite magnetic poles and attract each other. A triangular hole two (614) is opened on one end face of the slide rod two (66). A magnetic plate eight is arranged in the triangular hole two (614). The rotating rod two (514) The interior of the triangular through groove 2 (520) is provided with a triangular rod 2 (521) slidably connected to the inner side of the triangular through groove 2 (520). A magnetic plate 9 (522) is provided at one end of the triangular rod 2 (521), and a magnetic plate 10 (523) is provided at the other end of the triangular rod 2 (521). The magnetic plates 8 and 9 (522) are opposite magnetic poles and attract each other. A limiting plate 2 (524) is fixedly connected to the periphery of the triangular rod 2 (521).

8. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 7, characterized in that: The liquid storage tank (55) has two liquid storage tanks (525) fixedly connected to both sides, and the two liquid storage tanks (525) are in opposite directions. The inside of the liquid storage tank (525) is connected to the compression space (510). A rectangular tube (526) is fixedly connected to one side of the liquid storage tank (525). A guide tube (527) is fixedly connected to the inner wall of the liquid storage tank (525). A guide tube (528) is slidably connected to the inner side of the guide tube (527). A sealing plate (529) is fixedly connected to the end of the guide tube (528) away from the guide tube (527). A spring (530) is connected to the side of the sealing plate (529) near the guide tube (528). The end of the spring (530) away from the sealing plate (529) is connected to the inner wall of the liquid storage tank (525). The spring (530) is located inside the guide tube (527) and the guide tube (528).

9. The ultrasonic flaw detection device for weld seams of curved workpieces according to claim 8, characterized in that: The outer surface of the fixed cylinder (3) is provided with a liquid inlet assembly (7). The liquid inlet assembly (7) includes an electric telescopic rod (71). Two electric telescopic rods (71) are provided and are respectively fixedly installed on the upper and lower sides of the fixed cylinder (3). The output end of the electric telescopic rod (71) is fixedly connected to a mounting plate (72). A liquid inlet pipe (73) is fixedly connected to the mounting plate (72). One end of the liquid inlet pipe (73) is fixedly connected to a telescopic hose (74). The end of the telescopic hose (74) away from the liquid inlet pipe (73) is fixedly connected to an infusion pipe (75). A strong magnetic plate (76) and a push rod (77) are fixedly connected to one side of the mounting plate (72) located on the upper side of the fixed cylinder (3). The strong magnetic plate (76) and the magnetic plate five (416) are opposite magnetic poles and attract each other. A strong magnetic rod (78) and a push block (79) are fixedly connected to one side of the mounting plate (72) located on the lower side of the fixed cylinder (3). The strong magnetic rod (78) and the magnetic plate ten (523) are opposite magnetic poles and attract each other. A slot (710) is opened at the end of the liquid inlet pipe (73) away from the telescopic hose (74).

10. A method for ultrasonic testing of weld seams on curved workpieces, comprising an ultrasonic testing device for weld seams on curved workpieces according to any one of claims 1-9, wherein the method further comprises a storage tank (8) and a weld seam (81), characterized in that: First, the storage tank (8) is horizontally fixed inside the fixed cylinder (3), and the weld seam (81) is located outside the fixed cylinder (3). Then, the motor is started. The motor drives the outer gear ring (42) to rotate through the gear one (11), which in turn drives the ring plate one (41) to rotate. When the ring plate one (41) rotates, it drives the weld seam scanner (53) and the probe head (54) to rotate around the storage tank (8) for one revolution, so as to realize ultrasonic flaw detection of the weld seam (81) set around the storage tank (8).

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