Magnetic particle inspection integrated tool for steel structure weld defects
By designing an integrated tool system for protection, spraying, and inspection, the problems of uneven manual spraying and the influence of external factors were solved, achieving high precision and accuracy in the inspection of steel structure welds.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG NORTHWEST PROD QUALITY INSPECTION & RES CENT (CO LTD)
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-04
AI Technical Summary
Existing magnetic particle testing devices suffer from problems such as uneven manual spraying and susceptibility to external factors when inspecting welds in steel structures, leading to reduced accuracy and precision.
An integrated tool comprising a protective mechanism, an oil spraying mechanism, and a detection mechanism was designed. The steel structure is fixed by a rotating mechanism, the oil spraying mechanism uniformly sprays black oil magnetic suspension, the detection mechanism performs magnetic particle detection, and the tools work together through a drive mechanism to achieve automated operation.
It improves the accuracy and precision of steel structure weld inspection, avoids the influence of external factors, and ensures the stability and consistency of inspection results.
Smart Images
Figure CN224594566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic particle testing technology, and in particular to an integrated tool for magnetic particle testing of weld defects in steel structures. Background Technology
[0002] Magnetic particle inspection utilizes the interaction between the leakage magnetic field at a workpiece defect and the magnetic powder. It takes advantage of the difference in magnetic permeability between the surface and near-surface defects of steel products and the magnetic permeability of steel itself. After magnetization, the magnetic field at these material discontinuities will be distorted, forming a leakage magnetic field on the workpiece surface at the point of partial magnetic flux leakage. This attracts magnetic powder to form magnetic powder deposits at the defects—magnetic traces. Under appropriate lighting conditions, the location and shape of the defects are revealed. By observing and interpreting these magnetic powder deposits, magnetic particle inspection is achieved.
[0003] When using magnetic particle testing to inspect welds in cylindrical steel structures, a magnetic particle testing device is required. However, most currently used magnetic particle testing devices involve manually spraying or applying black oil magnetic suspension and magnetic powder to the weld inspection location from a single direction. This prevents the uniform application of the black oil magnetic suspension to the weld inspection location. Due to the significant errors inherent in manual operation, the accuracy of the magnetic particle testing results for the steel structure welds is directly reduced. Furthermore, magnetic particle testing devices lack protective functions and are easily affected by external factors such as temperature, humidity, and dust particles, leading to a decrease in the accuracy of the steel structure weld inspection results.
[0004] Therefore, there is an urgent need to provide an integrated magnetic particle inspection tool for defects in steel structure welds to solve the above problems. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an integrated magnetic particle inspection tool for defects in steel structure welds.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing an integrated magnetic particle inspection tool for defects in steel structure welds, including an inspection table, a protective mechanism fixedly installed on the surface of the inspection table, the protective mechanism providing protection during the magnetic particle inspection of the steel structure welds, a rotating mechanism rotatably connected inside the protective mechanism for rotating the steel structure, and further comprising; The surface of the testing platform is rotatably connected to an oil spraying mechanism, which is used to spray black oil magnetic suspension liquid onto the weld seam of the steel structure. The surface of the testing platform is rotatably connected to a testing mechanism, which is used to test the magnetic powder at the weld seam of the steel structure. The testing platform is equipped with a drive mechanism, which is used to drive the oil injection mechanism and the testing mechanism to rotate.
[0007] The present invention is further configured such that symmetrical grooves are provided on the surface of the detection stage.
[0008] The above technical solution makes the two racks more stable when they move.
[0009] The present invention is further configured such that: the protective mechanism includes a fixed frame, the surface of the fixed frame has symmetrical guide grooves, a spring is fixedly connected inside the guide grooves, a stop block is fixedly installed on the surface of the fixed frame, a movable frame is slidably connected to the surface of the fixed frame, symmetrical guide blocks are fixedly installed inside the movable frame, the guide blocks are slidably connected inside the guide grooves, the other end of the spring is fixedly connected to the surface of the guide block, a limit groove is opened inside the movable frame, the stop block is slidably connected inside the limit groove, a semi-circular hole is opened on the surface of the movable frame, and a rotation hole is opened on the surface of the fixed frame.
[0010] Through the above technical solution, the protective mechanism protects the steel structure during inspection. Before the steel structure is inspected, the movable frame is moved back on the surface of the fixed frame, and the two movable frames are moved apart. The circular steel structure is placed inside the fixed frame and fixed by the rotating mechanism. After the movable frame is released, the two movable frames are put back together under the action of the spring, and the semi-circular holes merge to form a circular hole, forming a closed space to prevent external dust and impurities from entering. The oil nozzle and the probe are inserted into the fixed frame through the insertion circular hole to work. The guide block and the guide groove cooperate to make the movement of the movable frame more stable. The stop block and the limit groove cooperate to prevent the movable frame from detaching from the surface of the fixed frame.
[0011] The present invention is further configured such that: the rotating mechanism includes a handle, a sleeve is fixedly installed on the surface of the handle, a screw is threadedly connected to the surface of the sleeve, a pressing plate is fixedly connected to the end of the screw, a limit ring is fixedly installed on the surface of the sleeve, and the sleeve is rotatably connected inside the rotating hole.
[0012] With the above technical solution, the circular steel structure is inserted into the sleeve when placed. By turning the screw, the pressing plate presses the steel structure inside the sleeve to fix it. The steel structure can be rotated through the handle, which facilitates uniform oil spraying and comprehensive inspection of the weld.
[0013] The present invention is further configured such that: the oil injection mechanism includes a first bracket, a first gear is fixedly installed at the end of the first bracket, an oil can and a first cylinder are fixedly installed on the surface of the first bracket, and an oil nozzle is fixedly installed at the end of the first cylinder.
[0014] With the above technical solution, the oil spraying mechanism can perform oil spraying work. The first bracket rotates to the top of the round hole, the first cylinder is activated, and the oil spray nozzle is driven to insert into the round hole to perform oil spraying work at the weld.
[0015] The present invention is further configured such that: the detection mechanism includes a second bracket, a second gear is fixedly installed at the end of the second bracket, a detector and a second cylinder are fixedly installed on the surface of the second bracket, and a probe is fixedly installed at the end of the second cylinder.
[0016] With the above technical solution, the testing agency can carry out testing work. The second bracket is rotated to the top of the circular hole, the second cylinder is activated, and the probe head is driven to insert into the circular hole to carry out magnetic particle testing at the weld.
[0017] The present invention is further configured such that: the driving mechanism includes a motor, the motor is fixedly installed inside the testing table, a third gear is fixedly installed at the end of the transmission shaft of the motor, a rack is slidably connected inside the slide groove, one side of the rack meshes with one side of the first gear and the third gear respectively, and the other side of the rack meshes with the other side of the second gear and the third gear respectively.
[0018] With the above technical solution, in the initial state, the oil injection mechanism is located directly above the circular hole to perform oil injection. When the motor starts, the third gear rotates, which allows the two racks to move inside the slide. One rack meshes with the first gear, causing the first gear to rotate, which in turn causes the first bracket to rotate. The oil injection mechanism moves away from directly above the circular hole. The other rack meshes with the second gear, causing the second gear to rotate, which in turn drives the second bracket to rotate. The detection mechanism moves to directly above the circular hole to perform detection.
[0019] The beneficial effects of this utility model are as follows: This utility model is equipped with a protective mechanism and an oil spraying mechanism. When the protective mechanism is open, it is used to place the steel structure. When the protective mechanism is closed, it forms a closed space to prevent impurities and dust from entering the interior of the protective mechanism and affecting the test results. The steel structure is placed inside the rotating mechanism and fixed by pressing blocks. The steel structure can be rotated by the handle. The oil spraying mechanism sprays the weld seams evenly to improve the accuracy of the test. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the device of this utility model; Figure 2 This is a cross-sectional structural diagram of the device of this utility model; Figure 3 This is a schematic diagram of the protective mechanism structure of the device of this utility model; Figure 4 This is a schematic diagram of the rotating mechanism of the device of this utility model.
[0021] In the diagram: 1. Testing platform; 11. Slide groove; 2. Protective mechanism; 21. Fixed frame; 22. Guide groove; 23. Spring; 24. Stop block; 25. Moving frame; 26. Guide block; 27. Limiting groove; 28. Semi-circular hole; 29. Rotating hole; 3. Rotating mechanism; 31. Handle; 32. Sleeve; 33. Screw; 34. Pressing plate; 35. Limiting ring; 4. Oil injection mechanism; 41. First bracket; 42. First gear; 43. Oil can; 44. First cylinder; 45. Oil injector; 5. Testing mechanism; 51. Second bracket; 52. Second gear; 53. Testing instrument; 54. Second cylinder; 55. Probe head; 6. Drive mechanism; 61. Motor; 62. Third gear; 63. Rack. Detailed Implementation
[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0023] Please see Figures 1-4 This application provides an integrated magnetic particle inspection tool for defects in steel structure welds, including an inspection table 1. A protective mechanism 2 is fixedly installed on the surface of the inspection table 1. The protective mechanism 2 provides protection during the magnetic particle inspection of the steel structure welds. A rotating mechanism 3 is rotatably connected inside the protective mechanism 2. The rotating mechanism 3 is used to rotate the steel structure.
[0024] like Figure 2 As shown, the surface of the testing table 1 has symmetrical grooves 11.
[0025] In this embodiment, the groove 11 makes the two racks 63 more stable when moving.
[0026] like Figure 3 As shown, the protective mechanism 2 includes a fixed frame 21, with symmetrical guide grooves 22 on the surface of the fixed frame 21. A spring 23 is fixedly connected inside the guide grooves 22. A stop block 24 is fixedly installed on the surface of the fixed frame 21. A movable frame 25 is slidably connected to the surface of the fixed frame 21. Symmetrical guide blocks 26 are fixedly installed inside the movable frame 25. The guide blocks 26 are slidably connected inside the guide grooves 22. The other end of the spring 23 is fixedly connected to the surface of the guide block 26. A limit groove 27 is opened inside the movable frame 25. The stop block 24 is slidably connected inside the limit groove 27. A semi-circular hole 28 is opened on the surface of the movable frame 25. A rotating hole 29 is opened on the surface of the fixed frame 21.
[0027] In this embodiment: the protective mechanism 2 protects the steel structure during inspection. Before the steel structure is inspected, the movable frame 25 is moved backward on the surface of the fixed frame 21, and the two movable frames 25 are far apart. The circular steel structure is placed inside the fixed frame 21 and fixed by the rotating mechanism 3. The movable frame 25 is then released, and under the action of the spring 23, the two movable frames 25 are put together again. The semi-circular hole 28 merges to form a circular hole, forming a closed space to prevent external dust and impurities from entering. The fuel injector 45 and the probe 55 are inserted into the fixed frame 21 through the insertion circular hole to work. The guide block 26 and the guide groove 22 cooperate to make the movable frame 25 more stable when moving. The stop block 24 and the limiting groove 27 cooperate to prevent the movable frame 25 from detaching from the surface of the fixed frame 21.
[0028] like Figure 4 As shown, the rotating mechanism 3 includes a handle 31, a sleeve 32 is fixedly mounted on the surface of the handle 31, a screw 33 is threadedly connected to the surface of the sleeve 32, a pressing plate 34 is fixedly connected to the end of the screw 33, a limit ring 35 is fixedly mounted on the surface of the sleeve 32, and the sleeve 32 is rotatably connected inside the rotating hole 29.
[0029] In this embodiment: When the circular steel structure is placed, it is inserted into the sleeve 32. By turning the screw 33, the pressing plate 34 presses the steel structure inside the sleeve 32 to fix the steel structure. The steel structure can be rotated through the handle 31 to facilitate uniform oil spraying and comprehensive inspection of the weld.
[0030] The surface of the testing table 1 is rotatably connected to an oil spraying mechanism 4, which is used to spray black oil magnetic suspension liquid onto the weld seam of the steel structure. The surface of the testing table 1 is rotatably connected to a testing mechanism 5, which is used to test the magnetic powder at the weld seam of the steel structure.
[0031] like Figure 2 As shown, the fuel injection mechanism 4 includes a first bracket 41, a first gear 42 is fixedly installed at the end of the first bracket 41, an oil can 43 and a first cylinder 44 are fixedly installed on the surface of the first bracket 41, and a fuel injector 45 is fixedly installed at the end of the first cylinder 44.
[0032] In this embodiment: the oil spraying mechanism 4 can perform oil spraying. The first bracket 41 rotates to the top of the round hole, the first cylinder 44 is activated, and the oil spray nozzle 45 is driven to insert into the round hole to perform oil spraying at the weld.
[0033] like Figure 2 As shown, the detection mechanism 5 includes a second bracket 51, a second gear 52 is fixedly installed at the end of the second bracket 51, a detector 53 and a second cylinder 54 are fixedly installed on the surface of the second bracket 51, and a probe head 55 is fixedly installed at the end of the second cylinder 54.
[0034] In this embodiment: the detection mechanism 5 can perform detection work. The second bracket 51 rotates to the top of the circular hole, the second cylinder 54 is activated, and the probe head 55 is driven to insert into the circular hole to perform magnetic particle detection at the weld.
[0035] The testing platform 1 is equipped with a drive mechanism 6, which is used to drive the oil injection mechanism 4 and the testing mechanism 5 to rotate.
[0036] like Figure 2 As shown, the drive mechanism 6 includes a motor 61, which is fixedly installed inside the detection table 1. A third gear 62 is fixedly installed at the end of the transmission shaft of the motor 61. A rack 63 is slidably connected inside the slide groove 11. The two sides of one rack 63 mesh with one side of the first gear 42 and the third gear 62, respectively, and the two sides of the other rack 63 mesh with the other side of the second gear 52 and the third gear 62, respectively.
[0037] In this embodiment: In the initial state, the oil injection mechanism 4 is located directly above the circular hole to perform oil injection. When the motor 61 is started, the third gear 62 rotates, which allows the two racks 63 to move inside the slide groove 11. One rack 63 meshes with the first gear 42, which causes the first gear 42 to rotate, thereby causing the first bracket 41 to rotate. The oil injection mechanism 4 moves away from directly above the circular hole. The other rack 63 meshes with the second gear 52, which causes the second gear 52 to rotate, further driving the second bracket 51 to rotate. The detection mechanism 5 moves to directly above the circular hole to perform detection.
[0038] In its initial state, the oil spraying mechanism 4 is positioned directly above the circular hole. First, the movable frame 25 is moved backward on the surface of the fixed frame 21, with the two movable frames 25 moving away from each other. The circular steel structure is then placed inside the fixed frame 21 and fixed by the rotating mechanism 3. The movable frames 25 are then released, and under the action of the spring 23, the two movable frames 25 re-fit, merging the semi-circular hole 28 to form a circular hole. The first cylinder 44 is activated, driving the oil nozzle 45 to insert into the circular hole. The steel structure can be rotated via the handle 31, facilitating even oil spraying at the weld. After the oil spraying is completed, the electric... When machine 61 is started, the third gear 62 rotates, allowing the two racks 63 to move inside the slide groove 11. One rack 63 meshes with the first gear 42, causing the first gear 42 to rotate, which in turn causes the first bracket 41 to rotate. The oil injection mechanism 4 moves away from directly above the circular hole. The other rack 63 meshes with the second gear 52, causing the second gear 52 to rotate, which in turn drives the second bracket 51 to rotate. The detection mechanism 5 moves to directly above the circular hole, and the second cylinder 54 is activated, driving the probe head 55 to insert into the circular hole to perform magnetic particle detection at the weld.
[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A magnetic particle inspection integrated tool for detecting defects in a weld of a steel structure, comprising a detection table (1), characterized in that, The testing platform (1) is fixedly equipped with a protective mechanism (2), which protects the steel structure weld during the magnetic particle testing process. The protective mechanism (2) is rotatably connected to a rotating mechanism (3) inside the protective mechanism (2). The rotating mechanism (3) is used to rotate the steel structure and also includes: The surface of the testing platform (1) is rotatably connected to an oil spraying mechanism (4), which is used to spray black oil magnetic suspension liquid onto the weld of the steel structure. The surface of the testing platform (1) is rotatably connected to a testing mechanism (5), which is used to test the magnetic powder at the weld of the steel structure. The testing platform (1) is equipped with a drive mechanism (6) which is used to drive the oil injection mechanism (4) and the testing mechanism (5) to rotate.
2. The integrated magnetic powder testing tool for steel structure weld defects according to claim 1, characterized in that: The surface of the testing station (1) is provided with symmetrical grooves (11).
3. The integrated magnetic powder testing tool for steel structure weld defects according to claim 2, characterized in that: The protective mechanism (2) includes a fixed frame (21), the surface of the fixed frame (21) is provided with symmetrical guide grooves (22), the inside of the guide grooves (22) is fixedly connected with a spring (23), the surface of the fixed frame (21) is fixedly installed with a stop block (24), the surface of the fixed frame (21) is slidably connected with a movable frame (25), the inside of the movable frame (25) is fixedly installed with symmetrical guide blocks (26), the guide blocks (26) are slidably connected inside the guide grooves (22), the other end of the spring (23) is fixedly connected to the surface of the guide blocks (26), the inside of the movable frame (25) is provided with a limit groove (27), the stop block (24) is slidably connected inside the limit groove (27), the surface of the movable frame (25) is provided with a semi-circular hole (28), and the surface of the fixed frame (21) is provided with a rotating hole (29).
4. The integrated magnetic powder testing tool for steel structure weld defects according to claim 3, characterized in that: The rotating mechanism (3) includes a handle (31), a sleeve (32) is fixedly installed on the surface of the handle (31), a screw (33) is threadedly connected to the surface of the sleeve (32), a pressing plate (34) is fixedly connected to the end of the screw (33), a limit ring (35) is fixedly installed on the surface of the sleeve (32), and the sleeve (32) is rotatably connected inside the rotating hole (29).
5. The integrated magnetic powder testing tool for steel structure weld defects according to claim 2, characterized in that: The oil injection mechanism (4) includes a first bracket (41), a first gear (42) is fixedly installed at the end of the first bracket (41), an oil can (43) and a first cylinder (44) are fixedly installed on the surface of the first bracket (41), and an oil nozzle (45) is fixedly installed at the end of the first cylinder (44).
6. The integrated magnetic powder testing tool for steel structure weld defects according to claim 5, characterized in that: The detection mechanism (5) includes a second bracket (51), a second gear (52) is fixedly installed at the end of the second bracket (51), a detector (53) and a second cylinder (54) are fixedly installed on the surface of the second bracket (51), and a probe (55) is fixedly installed at the end of the second cylinder (54).
7. The integrated magnetic powder testing tool for steel structure weld defects according to claim 6, characterized in that: The drive mechanism (6) includes a motor (61), which is fixedly installed inside the testing table (1). A third gear (62) is fixedly installed at the end of the transmission shaft of the motor (61). A rack (63) is slidably connected inside the slide groove (11). One side of the rack (63) meshes with one side of the first gear (42) and the third gear (62), respectively. The other side of the rack (63) meshes with the other side of the second gear (52) and the third gear (62), respectively.