Automatic online eddy current flaw detection device for silver bright rods of shaft forgings of maritime work equipment
By combining automated conveyor belts, straightening components, and dust removal components, the problems of manual dependence, positional deviation, and impurity interference in eddy current flaw detection of silver bright bars are solved, achieving efficient and accurate automatic detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing eddy current testing equipment for silver bright bars relies on manual hand-held inspection, which is inefficient. Traditional conveyor belts are prone to positional deviation and blind spots, and surface impurities can interfere with the signal, leading to misjudgments and increasing the waste of manpower and resources.
An automated conveying structure with a conveyor belt and placement trough is adopted, combined with a straightening component, a dust removal component, and a flaw detection component, to achieve orderly positioning, all-round straightening, and efficient dust removal of the silver bars, ensuring the stability and accuracy of the test.
It significantly improves testing efficiency, reduces the labor intensity of operators, avoids positional deviation and impurity interference, reduces misjudgment and resource waste, and improves the stability and accuracy of testing.
Smart Images
Figure CN121762676A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of testing equipment technology, specifically to an online eddy current flaw detection automatic testing device for bright silver bars of shaft forgings used in marine engineering equipment. Background Technology
[0002] Eddy current testing is a core technology in the field of nondestructive testing for conductive materials. Based on the principle of electromagnetic induction, it generates an alternating magnetic field by passing an alternating current through a detection coil, inducing closed eddy currents on and near the surface of the specimen. When the specimen has surface defects (such as cracks, inclusions, corrosion), material inhomogeneity, or size changes, the magnitude, phase, and distribution of the eddy currents will be distorted. The detection coil can sense the magnetic field changes caused by this distortion, and through signal processing such as filtering, amplification, and phase analysis, the location, size, and material characteristics of the defects can be deduced.
[0003] Existing eddy current testing equipment for silver bars generally relies on manual handheld testing, which is not only inefficient but also significantly increases the workload of operators. Secondly, some improved equipment uses conveyor belts to transport the silver bars and perform testing during transport. However, the smooth surface of the silver bars makes them prone to slippage with the conveyor belt, affecting transport speed and stability. It can also cause blind spots due to the positional deviation of the silver bars, further reducing overall testing efficiency and accuracy. Finally, dust and other impurities easily adhere to the surface of silver bars during production and storage. These impurities can interfere with electromagnetic signal transmission during eddy current testing, and are easily misjudged by the testing system as internal cracks, inclusions, or other defects. This not only increases the labor and time costs of rework and re-inspection but may also lead to qualified products being mistakenly judged as unqualified and scrapped, resulting in resource waste. Summary of the Invention
[0004] This invention provides an online eddy current flaw detection automatic inspection device for bright silver bars of shaft forgings for marine engineering equipment, in order to solve at least one of the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention discloses an online eddy current flaw detection automatic detection device for silver bright bars of shaft forgings for marine engineering equipment, including a conveyor table, a conveyor belt on the conveyor table, several placement slots in the center of the conveyor belt, silver bright bars placed in the placement slots, and a straightening component, a dust removal component and a flaw detection component arranged sequentially along the conveying direction of the conveyor belt on the conveyor table, the flaw detection component including an eddy current flaw detection scanner.
[0006] Preferably, the conveyor table includes symmetrical mounting plates, with a support rod fixedly installed at the lower end of each mounting plate. Several conveying rollers are rotatably mounted on the side of the two mounting plates that are close to each other. The conveying rollers are arranged symmetrically up and down and are engaged with the conveyor belt. A drive box is installed on the side of the two mounting plates that are far apart from each other. A drive motor is installed on one of the drive boxes. An active roller is fixedly installed on the output end of the drive motor. The active roller rotates through the mounting plate and is engaged with the conveyor belt.
[0007] Preferably, the straightening component includes symmetrically arranged movable plates, and four sliding rods are fixedly installed on the side of each of the two movable plates that are close to each other. The sliding rods are evenly distributed on the movable plates and are slidably connected to the mounting plate. The other end of the upper sliding rod is fixedly connected to the straightening plate. A toothed rod is fixedly installed on one side of the two movable plates that are close to each other. The mounting plates are symmetrically provided with mounting slots. The toothed rod slides into the mounting slot. A sliding plate is fixedly installed at the other end of the toothed rod. The sliding plate is slidably connected to the mounting slot. A reset component is also fixedly installed on the sliding plate. The two ends of the reset component are fixedly connected to the sliding plate and the mounting slot.
[0008] Preferably, the drive roller rotates through two drive boxes. A bevel gear is installed inside the drive box. The bevel gear is symmetrically fixed on the drive roller. A bevel gear is meshed with the bevel gear. A drive rod is fixedly installed on the bevel gear. The drive rod rotates and extends out of the drive box. A half gear is fixedly installed on the drive rod. The half gear is meshed with a rack.
[0009] Preferably, the straightening assembly further includes a U-shaped fixing plate, which is fixedly mounted on the mounting plate. A sliding plate is slidably mounted inside the U-shaped fixing plate. A groove is provided on the front vertical section of the U-shaped fixing plate. An L-shaped connecting rod is fixedly mounted on the front side of the sliding plate. A toothed plate is fixedly mounted on the L-shaped connecting rod. One of the conveying rollers located below the U-shaped fixing plate rotates forward and extends out of the mounting plate. A half gear two is fixedly connected to the front side of one of the conveying rollers located below the U-shaped fixing plate. The half gear two meshes with the toothed plate. Several connecting rods arranged in a ring are also fixedly mounted at the lower end of the sliding plate. The lower ends of the connecting rods are fixedly connected to a straightening ring. A reset member two is also fixedly mounted on the L-shaped connecting rod. The reset member two is fixedly connected to the groove.
[0010] Preferably, the dust removal component includes a second U-shaped fixed plate, a drive box is fixedly installed on the second U-shaped fixed plate, a telescopic rotating tube is rotatably installed inside the drive box, the telescopic rotating tube rotates through the second U-shaped fixed plate, a number of L-shaped pipes are fixedly installed at the lower end of the telescopic rotating tube, an air jet ring is fixedly installed at the lower end of the number of L-shaped pipes, and a number of air jet holes are provided inside the air jet ring. Dust collection boxes are symmetrically fixed inside the U-shaped fixing plate. Suction heads are fixedly installed on the sides of the dust collection boxes that are close to each other. Filter screens are also installed inside the dust collection boxes.
[0011] Preferably, one of the conveying rollers located on the lower side of the U-shaped fixed plate II extends forward to the mounting plate, and a rotating shaft is rotatably mounted on the drive box. A pulley I is provided on the front side of the rotating shaft and on the front side of one of the conveying rollers located on the lower side of the U-shaped fixed plate II. A belt I is mounted on the two pulleys I. A bevel gear I is fixedly mounted on the telescopic rotating tube, and a bevel gear II is meshed with one side of the bevel gear I. The bevel gear II is fixedly connected to the rotating shaft.
[0012] Preferably, the flaw detection assembly includes a U-shaped fixing plate three, a flaw detection box is installed on the U-shaped fixing plate three, a sliding plate is slidably arranged inside the flaw detection box, a sliding rod is fixedly arranged at the lower end of the sliding plate, a reset member three is sleeved on the sliding rod, the two ends of the reset member three are fixedly connected to the sliding plate and the flaw detection box, the sliding rod slides downward through the U-shaped fixing plate three, an eddy current flaw detector scanner is fixedly arranged at the lower end of the sliding rod, and a driving rod is also fixedly arranged on the sliding rod, the other end of the driving rod is rotatably connected to the telescopic rotating tube.
[0013] Preferably, one of the conveying rollers located on the lower side of the U-shaped fixed plate 3 extends forward to the mounting plate, and a rotating rod is rotatably installed on the flaw detection box. A pulley 2 is provided on the front side of the rotating rod and on the front side of one of the conveying rollers located on the lower side of the U-shaped fixed plate 3, and a belt 2 is installed on the two pulleys 2. A cam is fixedly installed on the rotating rod, and the cam cooperates with the sliding plate.
[0014] Preferably, a stabilizing rod is also fixedly installed on the sliding rod, and stabilizing grooves are opened on the two vertical sections of the U-shaped fixing plate three. The stabilizing rod is slidably connected to the stabilizing groove. An air outlet box is fixedly installed in the stabilizing groove, and a piston plate is slidably installed in the air outlet box. An air outlet rod is fixedly installed at the upper end of the piston plate. The air outlet rod slides upward and extends out of the air outlet box. The upper end of the air outlet rod is fixedly connected to the stabilizing rod. A pipe is connected through the front side of the air outlet box. The pipe extends into the drive box and is rotatably connected to the telescopic rotating tube.
[0015] Compared with the prior art, the present invention provides an online eddy current flaw detection automatic inspection device for bright silver bars of shaft forgings for marine engineering equipment, which has the following beneficial effects: 1. An automated conveying structure with a conveyor belt and placement trough is adopted to replace the traditional manual handheld flaw detection method. The silver bars can be orderly positioned and conveyed through the placement trough, and continuous testing can be completed without manual intervention. This not only greatly improves the testing efficiency but also reduces the labor intensity of operators. 2. A placement groove is set in the center of the conveyor belt to limit the movement of the silver bars, which effectively avoids the relative slippage problem between the traditional conveyor belt and the smooth silver bars, and ensures the stability of the conveying speed. 3. A dedicated dust removal component is installed in front of the flaw detection component, which can efficiently remove the dust attached to the surface of the silver bright bar, reduce the interference of impurities on the electromagnetic signal of eddy current flaw detection, and avoid the situation where qualified products are mistakenly judged as defective products. This reduces the labor and time costs of rework and re-inspection, and also reduces the waste of resources caused by the scrapping of qualified products. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 Partial structural bottom view; Figure 3 This is a schematic diagram of the structure of the straightening component of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the straightening component of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the installation of the second reset component of the present invention; Figure 6 This is a schematic diagram of the dust removal component of the present invention; Figure 7 This is a top view of the jet ring of the present invention; Figure 8 This is a schematic diagram of the flaw detection assembly of the present invention; Figure 9 This is a schematic diagram of the installation of the air outlet box of the present invention.
[0017] In the diagram: 1. Conveyor table; 2. Conveyor belt; 3. Drive box; 4. Drive motor; 5. Bevel gear II; 6. Drive rod; 7. Slide rod; 8. Moving plate; 9. L-shaped connecting rod; 10. Rotating shaft; 11. Pulley I; 12. Rotating rod; 13. Pulley II; 14. Cam; 15. Flaw detection box; 16. U-shaped fixing plate III; 17. Drive box; 18. U-shaped fixing plate II; 19. Straightening plate; 20. U-shaped fixing plate I; 21. Placement groove; 22. Drive roller; 23. Bevel gear I; 24. Half gear I; 25. Gear plate; 26. Gear rack; 27. Mounting groove; 28. 1. Reset Component 1; 29. Slide Plate; 30. Sliding Plate; 31. Half Gear 2; 32. Straightening Ring; 33. Connecting Rod; 34. Conveyor Roller; 35. Reset Component 2; 36. Eddy Current Scanner; 37. L-shaped Pipe; 38. Bevel Gear 2; 39. Bevel Gear 1; 40. Telescopic Rotary Tube; 41. Suction Pump; 42. Filter Screen; 43. Suction Head; 44. Air Jet Ring; 45. Dust Collection Box; 46. Reset Component 3; 47. Stabilizing Rod; 48. Pipe; 49. Sliding Rod; 50. Driving Rod; 51. Sliding Plate; 52. Exhaust Box; 53. Piston Plate; 54. Exhaust Rod. Detailed Implementation
[0018] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0021] Example 1: An embodiment of the present invention provides an online eddy current flaw detection automatic inspection device for bright silver bars of shaft forgings used in marine engineering equipment, such as... Figures 1-9 The diagram shows a conveyor platform 1 with a conveyor belt 2 on it. Several placement slots 21 are provided in the center of the conveyor belt 2, and silver bars are placed in the placement slots 21. Along the conveying direction of the conveyor belt, a straightening component, a dust removal component, and a flaw detection component are arranged sequentially on the conveyor platform 1. The flaw detection component includes an eddy current flaw detector 36.
[0022] The working principle and beneficial effects of the above technical solution are as follows: Several silver bars are placed in the placement groove 21 and positioned by the placement groove 21, and then conveyed along the preset direction by the conveyor belt 2; first, they pass through the straightening component to calibrate the axis of the silver bars to ensure that their conveying posture is consistent with the flaw detection scanning direction; then they enter the dust removal component to remove dust and other impurities from the surface of the silver bars; finally, they pass through the flaw detection component, and the eddy current flaw detector 36 performs online scanning detection on the silver bars to realize automatic identification and signal feedback of internal defects (such as cracks and inclusions); 1. An automated conveying structure using a conveyor belt 2 and a placement trough 21 is adopted to replace the traditional manual handheld flaw detection method. The silver bars can be orderly positioned and conveyed through the placement trough 21, and continuous testing can be completed without manual intervention. This not only greatly improves the testing efficiency but also reduces the labor intensity of operators. 2. A placement groove 21 is set in the center of the conveyor belt 2. The placement groove 21 is used to limit the silver bar, which effectively avoids the relative slippage problem between the traditional conveyor belt and the smooth silver bar, and ensures the stability of the conveying speed. 3. Installing a dust removal component in front of the flaw detection component can efficiently remove dust adhering to the surface of the silver bright bar, reduce the interference of impurities on the electromagnetic signal of eddy current flaw detection, and avoid the situation where qualified products are mistakenly judged as defective products. This reduces the labor and time costs of rework and re-inspection, and also reduces the waste of resources caused by the scrapping of qualified products.
[0023] Example 2: Based on Example 1 above, as follows Figures 1-2 As shown, the conveyor table 1 includes symmetrical mounting plates. A support rod is fixedly installed at the lower end of the mounting plates. Several conveying rollers 34 are rotatably installed on the side of the two mounting plates that are close to each other. The conveying rollers 34 are arranged symmetrically up and down. The conveying rollers 34 are meshed with the conveyor belt 2. A drive box 3 is installed on the side of the two mounting plates that are far apart from each other. A drive motor 4 is installed on one of the drive boxes 3. An active roller 22 is fixedly installed on the output end of the drive motor 4. The active roller 22 rotates through the mounting plate and is meshed with the conveyor belt 2.
[0024] The inner side of the conveyor belt 2 is provided with meshing teeth, and both the drive roller 22 and the conveyor roller 34 are meshed with the conveyor belt 2.
[0025] The working principle and beneficial effects of the above technical solution are as follows: When the drive motor 4 is started, the active roller 22 rotates. The active roller 22 forms a meshing transmission with the conveyor belt 2 through the meshing teeth 23 on the inner side of the conveyor belt 2, driving the conveyor belt 2 to run. Due to the meshing action of the meshing teeth, slippage is avoided during the transmission process, ensuring the speed of the conveyor belt 2 is stable. Several sets of conveyor rollers 34 arranged symmetrically above and below mesh synchronously with the meshing teeth, guiding the conveyor belt 2 to be transported smoothly along the preset track. The silver bars to be tested enter the straightening component, dust removal component and flaw detection component in sequence with the smooth running of the conveyor belt 2. The transmission structure of meshing teeth, active roller 22 and conveyor roller 34 effectively solves the problems of slippage and sagging of traditional conveyor belts, ensuring the stability of the silver bars in posture during the transportation process (no axis deviation and no position shaking), making it more practical.
[0026] Example 3: Based on Example 2 above, as follows Figures 1-4 As shown, the straightening component includes two symmetrical movable plates 8. Four sliding rods 7 are fixedly installed on the side of the two movable plates 8 that are close to each other. The sliding rods 7 are evenly distributed on the movable plates 8. The sliding rods 7 are slidably connected to the mounting plate. The other end of the upper sliding rod 7 is fixedly connected to the straightening plate 19. Two movable plates 8 are each fixedly provided with a toothed rod 26 on one side that is close to each other. The mounting plates are symmetrically provided with mounting grooves 27. The toothed rod 26 slides into the mounting groove 27. The other end of the toothed rod 26 is fixedly provided with a sliding plate 29. The sliding plate 29 is slidably connected to the mounting groove 27. A reset component 28 is also fixedly provided on the sliding plate 29. The two ends of the reset component 28 are fixedly connected to the sliding plate 29 and the mounting groove 27.
[0027] Preferably, the drive roller 22 rotates through two drive boxes 3. A bevel gear 23 is provided inside the drive box 3. The bevel gear 23 is symmetrically fixed on the drive roller 22. A bevel gear 5 is meshed on the bevel gear 23. A drive rod 6 is fixedly provided on the bevel gear 25. The drive rod 6 rotates and extends out of the drive box 3. A half gear 24 is fixedly provided on the drive rod 6. The half gear 24 is meshed with the rack 26.
[0028] The working principle and beneficial effects of the above technical solution are as follows: The drive motor 4 starts and drives the active roller 22 to rotate. The active roller 22 synchronously drives the bevel gears 23 on both sides to rotate. The bevel gears 23 drive the bevel gears 5 and the drive rod 6 to rotate. At the same time, the half gear 24 on the drive rod 6 rotates accordingly. When the half gear 24 meshes with the rack 26, it pushes the rack 26 to slide along the mounting groove 27 of the mounting plate. The rack 26 drives the slide plate 29 to slide synchronously and compress the reset piece 28. Simultaneously, the rack... Rod 26 drives the moving plate 8 to move, and the slide bar 7 on the moving plate 8 slides along the mounting plate, eventually driving the straightening plate 19 at the end of the upper slide bar 7 to move closer to the silver bar, completing the straightening and calibration of the silver bar. When the teeth of the half gear 24 disengage from the rack 26, the reset component 28 resets, pushing the slide plate 29 to slide in the opposite direction, driving the rack 26, the moving plate 8 and the straightening plate 19 to reset, reserving space for the conveying and straightening of the next silver bar, and achieving cyclic straightening with the continuous conveying of the conveyor belt 2.
[0029] The four sliding rods 7 on the moving plate 8 provide stable guidance and prevent the straightening plate 19 from shifting during movement; the symmetrical structure of the moving plate and the straightening plate 19 can apply force to the silver bar from both sides simultaneously, ensuring accurate alignment of the silver bar axis without the need for manual intervention, thus reducing manpower input.
[0030] Example 4: Based on Examples 1-3, such as Figures 1-5 As shown, the straightening assembly also includes a U-shaped fixing plate 20, which is fixedly mounted on the mounting plate. A sliding plate 30 is slidably mounted inside the U-shaped fixing plate 20. A groove is provided on the front vertical section of the U-shaped fixing plate 20. An L-shaped connecting rod 9 is fixedly mounted on the front side of the sliding plate 30. A toothed plate 25 is fixedly mounted on the L-shaped connecting rod 9. One of the conveying rollers 34 located on the lower side of the U-shaped fixing plate 20 rotates forward and extends out of the mounting plate. A half gear 31 is fixedly connected to the front side of one of the conveying rollers 34 located on the lower side of the U-shaped fixing plate 20. The half gear 31 meshes with the toothed plate 25. Several connecting rods 33 arranged in a ring are also fixedly mounted at the lower end of the sliding plate 30. A straightening ring 32 is fixedly connected to the lower end of the connecting rods 33. A reset member 35 is also fixedly mounted on the L-shaped connecting rod 9. The reset member 35 is fixedly connected to the groove.
[0031] The working principle and beneficial effects of the above technical solution are as follows: When one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 20 rotates synchronously, the half gear 31 fixedly connected to its front side rotates coaxially. When the half gear 31 meshes with the toothed plate 25, it pushes the toothed plate 25 to drive the L-shaped connecting rod 9 to move downward, thereby driving the sliding plate 30 to move downward within the U-shaped fixed plate 20. The sliding plate 30 drives the straightening ring 32 to move downward synchronously through several annularly distributed connecting rods 33 at its lower end, and moves synchronously around the silver bar to calibrate the small-range deflection of the silver bar, thus completing the straightening in the left and right directions.
[0032] When the teeth of the second half gear 31 disengage from the toothed plate 25, the reset piece 35 on the L-shaped connecting rod 9 resets, pulling the L-shaped connecting rod 9, toothed plate 25, and sliding plate 30 back to their original positions. The straightening ring 32 moves upward synchronously. At the same time, this action coordinates with the action of the straightening plate 19 in the front-back direction in Embodiment 3, achieving cyclical all-round straightening with the continuous conveying of the conveyor belt 2. The second half gear 31 is driven directly by the rotational power of the conveyor roller 34, without the need for an additional independent drive mechanism. It forms an integrated linkage with the power system of "conveyor-front-back straightening" mentioned above, while ensuring that the straightening action and the conveying speed are synchronized in real time, avoiding straightening failure caused by asynchronous power.
[0033] Based on the front-to-back alignment in Example 3, a new left-to-right alignment ring 32 is added for calibration, forming a three-dimensional alignment structure that covers both front-to-back and left-to-right directions. This is specifically designed to address issues such as small-range deflection and left-to-right offset that are prone to occur during the transport of silver bars, ensuring that the axis of the silver bars coincides with the reference for subsequent dust removal and flaw detection operations.
[0034] Example 5: Based on Example 4 above, as follows Figure 1 , Figures 6-7 As shown, the dust removal assembly includes a U-shaped fixed plate 18, a drive box 17 is fixedly installed on the U-shaped fixed plate 18, a telescopic rotating tube 40 is rotatably installed inside the drive box 17, the telescopic rotating tube 40 rotates through the U-shaped fixed plate 18, a number of L-shaped pipes 37 are fixedly installed at the lower end of the telescopic rotating tube 40, an air jet ring 44 is fixedly installed at the lower end of the number of L-shaped pipes 37, and a number of air jet holes are provided inside the air jet ring 44. Dust collection boxes 45 are symmetrically fixed inside the U-shaped fixing plate 2 18. Suction heads 43 are fixedly installed on the sides of the dust collection boxes 45 that are close to each other. Filter screens 42 are also installed inside the dust collection boxes 45.
[0035] Preferably, one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 18 extends forward to the mounting plate. A rotating shaft 10 is rotatably mounted on the drive box 17. A pulley 11 is provided on the front side of the rotating shaft 10 and the front side of one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 18. A belt is mounted on the two pulleys 11. A bevel gear 39 is fixedly mounted on the telescopic rotating tube 40. A bevel gear 38 is meshed on one side of the bevel gear 39. The bevel gear 38 is fixedly connected to the rotating shaft 10.
[0036] The working principle and beneficial effects of the above technical solution are as follows: When one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 18 rotates synchronously, the pulley 11 on its front side rotates coaxially; the belt drives the upper pulley 11 to rotate synchronously, and the upper pulley 11 drives the rotating shaft 10 to rotate synchronously; the bevel gear 38 on the rotating shaft 10 drives the bevel gear 39 to rotate, thereby driving the telescopic rotating tube 40 to rotate.
[0037] When the telescopic rotating tube 40 rotates, it drives several L-shaped pipes 37 and the jet ring 44 fixed at its lower end to rotate synchronously. Several jet holes in the jet ring 44 spray airflow (such as compressed air) to the periphery of the silver bar to be tested, peeling off the iron filings, dust and other impurities attached to the surface of the silver bar. At the same time, the dust collection box 45 symmetrically arranged in the U-shaped fixed plate 18 generates negative pressure through the suction head 43 on its inner side (the suction pump 41 is installed in the dust collection box 45, and the suction action of the suction pump 41 and the jet action of the jet ring 44 are synchronized), and the peeled impurities are sucked into the dust collection box 45 in time. The impurities are filtered by the filter screen 42 in the dust collection box 45 and then retained.
[0038] The dust removal action is synchronized in real time with the conveying speed and straightening action of the conveyor belt 2. After being straightened, the silver bar smoothly enters the dust removal component. Under the dual action of the rotating air jet ring 44 and the negative pressure suction of the suction head 43, the surface is cleaned. The air jet ring 44 rotates with the telescopic rotating tube 40, and its circumferentially distributed air jet holes can fully cover the surface of the silver bar, achieving 360° air jet stripping of impurities without dead angles. With the symmetrically arranged suction head 43 forming negative pressure adsorption, the stripped impurities can be collected in the dust collection box 45 in time, avoiding the impurities from being dispersed and re-attached to the surface of the silver bar or entering the subsequent flaw detection area.
[0039] Example 6: Based on Example 5 above, as follows Figure 1 , Figures 8-9 As shown, the flaw detection assembly includes a U-shaped fixing plate 316, a flaw detection box 15 is installed on the U-shaped fixing plate 316, a sliding plate 51 is slidably arranged inside the flaw detection box 15, a sliding rod 49 is fixedly installed at the lower end of the sliding plate 51, a reset member 346 is sleeved on the sliding rod 49, the two ends of the reset member 346 are fixedly connected to the sliding plate 51 and the flaw detection box 15, the sliding rod 49 slides downward through the U-shaped fixing plate 316, an eddy current flaw detector scanner 36 is fixedly installed at the lower end of the sliding rod 49, and a driving rod 50 is also fixedly installed on the sliding rod 49, the other end of the driving rod 50 is rotatably connected to the telescopic rotating tube 40.
[0040] Preferably, one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 3 16 extends forward to form a mounting plate. A rotating rod 12 is rotatably mounted on the flaw detection box 15. A pulley 2 13 is provided on the front side of the rotating rod 12 and on the front side of one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 3 16. A belt 2 is mounted on the two pulleys 2 13. A cam 14 is fixedly provided on the rotating rod 12. The cam 14 cooperates with the sliding plate 51.
[0041] Preferably, a stabilizing rod 47 is fixedly installed on the sliding rod 49. Stabilizing grooves are opened on the two vertical sections of the U-shaped fixing plate 16. The stabilizing rod 47 is slidably connected to the stabilizing groove. An air outlet box 52 is fixedly installed in the stabilizing groove. A piston plate 53 is slidably installed in the air outlet box 52. An air outlet rod 54 is fixedly installed at the upper end of the piston plate 53. The air outlet rod 54 slides upward and extends out of the air outlet box 52. The upper end of the air outlet rod 54 is fixedly connected to the stabilizing rod 47. A pipe 48 is connected through the front side of the air outlet box 52. The pipe 48 extends into the drive box 17 and is rotatably connected to the telescopic rotating pipe 40.
[0042] The working principle and beneficial effects of the above technical solution are as follows: When one of the conveying rollers 34 located on the lower side of the U-shaped fixed plate 16 rotates synchronously, the pulley 13 on its front side rotates coaxially; the rotating rod 12 is driven to rotate synchronously through the belt 2, and the cam 14 rotates together; when the protruding end of the cam 14 contacts the sliding plate 51, it pushes the sliding plate 51 to slide downward along the flaw detection box 15, the sliding plate 51 compresses the reset piece 46, and at the same time drives the sliding rod 49 and the eddy current flaw detector 36 at the lower end to move downward synchronously, close to the surface of the silver bar to be inspected, and inspect the silver bar; When the stabilizer bar 47 moves downward, it drives the air outlet bar 54 fixed at its lower end to move synchronously, thereby driving the piston plate 53 in the air outlet box 52 to slide up and down along the air outlet box 52. When the piston plate 53 slides downward, a positive pressure airflow is generated in the air outlet box 52. The gas is transported to the telescopic rotating tube 40 through the pipe 48, and then the gas is sprayed out from the jet ring 44, producing an impurity removal effect. When the sliding bar 49 moves downward, it drives the telescopic rotating tube 40 to move downward synchronously by driving the rod 50 (the telescopic characteristics of the telescopic rotating tube 40 are adapted to this movement requirement), so that the jet ring 44 forms a compound motion of "synchronous downward movement + self-rotation" with the sliding bar 49 and the stabilizer bar 47. Combined with the full coverage advantage of the ring structure, it achieves all-round and efficient dust blowing on the surface of the silver bar, and thoroughly removes the attached impurities.
[0043] The above structure enables fully automated operation and seamless connection of the entire process of "raw material transportation - all-round alignment - efficient dust removal - full-coverage flaw detection - impurity collection" without human intervention, which greatly shortens the inspection cycle of a single silver bar, reduces labor costs and operational errors, and is more practical.
[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.
Claims
1. An automatic online eddy current flaw detection device for bright silver bars used in marine engineering equipment shafts, characterized in that, It includes a conveyor platform (1), a conveyor belt (2) is provided on the conveyor platform (1), and several placement slots (21) are provided in the center of the conveyor belt (2). Silver bright bars are placed in the placement slots (21). A straightening component, a dust removal component and a flaw detection component are arranged sequentially on the conveyor platform (1) along the conveying direction of the conveyor belt. The flaw detection component includes an eddy current flaw detector (36).
2. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 1, characterized in that, The conveyor table (1) includes symmetrical mounting plates. A support rod is fixedly installed at the lower end of the mounting plate. Several conveying rollers (34) are rotatably installed on the side of the two mounting plates that are close to each other. The several conveying rollers (34) are symmetrically arranged vertically. The conveying rollers (34) are meshed with the conveyor belt (2). A drive box (3) is provided on the side of the two mounting plates that are far apart from each other. A drive motor (4) is provided on one of the drive boxes (3). An active roller (22) is fixedly installed on the output end of the drive motor (4). The active roller (22) rotates through the mounting plate and meshes with the conveyor belt (2).
3. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 2, characterized in that, The straightening assembly includes two symmetrical movable plates (8). Four sliding rods (7) are fixedly installed on the side of the two movable plates (8) that are close to each other. The sliding rods (7) are evenly distributed on the movable plates (8). The sliding rods (7) are slidably connected to the mounting plate. The other end of the upper sliding rod (7) is fixedly connected to the straightening plate (19). Two movable plates (8) are fixedly provided with a toothed rod (26) on one side that is close to each other. The mounting plate is symmetrically provided with mounting grooves (27). The toothed rod (26) slides into the mounting groove (27). The other end of the toothed rod (26) is fixedly provided with a sliding plate (29). The sliding plate (29) is slidably connected to the mounting groove (27). A reset component (28) is also fixedly provided on the sliding plate (29). The two ends of the reset component (28) are fixedly connected to the sliding plate (29) and the mounting groove (27).
4. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 3, characterized in that, The active roller (22) rotates through the two drive boxes (3). A bevel gear (23) is installed inside the drive box (3). The bevel gear (23) is symmetrically fixed on the active roller (22). A bevel gear (5) is meshed on the bevel gear (23). A drive rod (6) is fixed on the bevel gear (23). The drive rod (6) rotates and extends out of the drive box (3). A half gear (24) is fixed on the drive rod (6). The half gear (24) meshes with the rack (26).
5. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 4, characterized in that, The straightening assembly also includes a U-shaped fixing plate (20), which is fixedly mounted on the mounting plate. A sliding plate (30) is slidably mounted inside the U-shaped fixing plate (20). A groove is provided on the front vertical section of the U-shaped fixing plate (20). An L-shaped connecting rod (9) is fixedly mounted on the front side of the sliding plate (30). A toothed plate (25) is fixedly mounted on the L-shaped connecting rod (9). One of the conveying rollers (34) located on the lower side of the U-shaped fixing plate (20) extends forward by rotation. The mounting plate is located on the front side of one of the conveying rollers (34) under the U-shaped fixed plate (20). Half gear two (31) is fixedly connected to the front side of the half gear two (31) and the toothed plate (25). Several connecting rods (33) arranged in a ring are also fixedly provided at the lower end of the sliding plate (30). The lower end of the several connecting rods (33) is fixedly connected to the straightening ring (32). A reset piece two (35) is also fixedly provided on the L-shaped connecting rod (9). The reset piece two (35) is fixedly connected to the slide groove.
6. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 2, characterized in that, The dust removal assembly includes a U-shaped fixed plate 2 (18), a drive box (17) is fixedly installed on the U-shaped fixed plate 2 (18), a telescopic rotating pipe (40) is rotatably installed inside the drive box (17), the telescopic rotating pipe (40) rotates through the U-shaped fixed plate 2 (18), a number of L-shaped pipes (37) are fixedly installed at the lower end of the telescopic rotating pipe (40), an air jet ring (44) is fixedly installed at the lower end of the number of L-shaped pipes (37), and a number of air jet holes are provided inside the air jet ring (44); Dust collection boxes (45) are symmetrically fixed inside the U-shaped fixed plate (18). Suction heads (43) are fixedly installed on the side of the dust collection boxes (45) that are close to each other. Filter screens (42) are also installed inside the dust collection boxes (45).
7. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 6, characterized in that, One of the conveying rollers (34) located on the lower side of the U-shaped fixed plate (18) rotates forward and extends out of the mounting plate. A rotating shaft (10) is rotatably installed on the drive box (17). A pulley (11) is provided on the front side of the rotating shaft (10) and on the front side of one of the conveying rollers (34) located on the lower side of the U-shaped fixed plate (18). A belt is installed on the two pulleys (11). A bevel gear (39) is fixedly installed on the telescopic rotating tube (40). A bevel gear (38) is meshed on one side of the bevel gear (39). The bevel gear (38) is fixedly connected to the rotating shaft (10).
8. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 7, characterized in that, The flaw detection assembly includes a U-shaped fixed plate three (16), a flaw detection box (15) is installed on the U-shaped fixed plate three (16), a sliding plate (51) is slidably arranged inside the flaw detection box (15), a sliding rod (49) is fixedly arranged at the lower end of the sliding plate (51), a reset component three (46) is sleeved on the sliding rod (49), the two ends of the reset component three (46) are fixedly connected to the sliding plate (51) and the flaw detection box (15), the sliding rod (49) slides downward through the U-shaped fixed plate three (16), an eddy current flaw detector (36) is fixedly arranged at the lower end of the sliding rod (49), a driving rod (50) is also fixedly arranged on the sliding rod (49), and the other end of the driving rod (50) is rotatably connected to the telescopic rotating tube (40).
9. An automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 8, characterized in that, One of the conveying rollers (34) located on the lower side of the U-shaped fixed plate three (16) rotates forward and extends out of the mounting plate. A rotating rod (12) is rotatably installed on the flaw detection box (15). A pulley two (13) is provided on the front side of the rotating rod (12) and on the front side of one of the conveying rollers (34) located on the lower side of the U-shaped fixed plate three (16). A belt two is installed on the two pulley two (13). A cam (14) is fixedly installed on the rotating rod (12). The cam (14) cooperates with the sliding plate (51).
10. The automatic online eddy current flaw detection device for bright silver bars of shaft forgings for marine engineering equipment according to claim 8, characterized in that, A stabilizing rod (47) is also fixedly installed on the sliding rod (49). A stabilizing groove is provided on the two vertical sections of the U-shaped fixing plate three (16). The stabilizing rod (47) is slidably connected to the stabilizing groove. An air outlet box (52) is fixedly installed in the stabilizing groove. A piston plate (53) is slidably installed in the air outlet box (52). An air outlet rod (54) is fixedly installed at the upper end of the piston plate (53). The air outlet rod (54) slides upward and extends out of the air outlet box (52). The upper end of the air outlet rod (54) is fixedly connected to the stabilizing rod (47). A pipe (48) is connected through the front side of the air outlet box (52). The pipe (48) extends into the drive box (17), and the pipe (48) is rotatably connected to the telescopic rotating pipe (40).