Universal contact for nondestructive testing magnetic particle flaw detector
The universal contact structure designed with triangular blocks and limit frames solves the problem of time-consuming contact replacement in traditional flaw detectors, achieves rapid adaptation and stable connection, and improves detection efficiency and accuracy.
Patent Information
- Application Number
- CN202521624247.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-01
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-08-01
AI Technical Summary
The contact structure of traditional non-destructive testing magnetic particle inspection machines is simple, which makes it time-consuming to replace workpieces and affects efficiency. Frequent disassembly and assembly will wear out the connection ports, resulting in unstable magnetization effect and affecting detection accuracy.
The triangular block structure and limit frame design are adopted. The contacts are connected by clamping bars and rotating shafts. Combined with the clamping method of telescopic rods and clamping frames, the contacts can be quickly replaced and stably connected, ensuring the flexibility and accuracy of the flaw detection process.
It achieves rapid adaptation and stable connection of the contact structure, reduces replacement time, avoids wear of the connection port, and improves detection efficiency and accuracy.
Smart Images
Figure CN223485920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flaw detection technology, and in particular to a universal contact for a non-destructive testing magnetic particle flaw detector. Background Technology
[0002] Magnetic particle testing is a non-destructive testing technique that utilizes the leakage magnetic field generated at defects in magnetized ferromagnetic materials to attract magnetic particles and form magnetic traces. It is suitable for detecting surface and near-surface defects such as cracks and folds in ferromagnetic workpieces. It is simple to operate, highly sensitive, and widely used in machinery, aerospace, and other fields.
[0003] The universal contact head used in a magnetic particle inspection machine for non-destructive testing is a key component that provides magnetizing current to the workpiece. Its adjustable angle and contact position ensure good contact with workpieces of different shapes and sizes, guaranteeing uniform and stable magnetization, and improving inspection efficiency and defect detection accuracy.
[0004] Workpieces come in a variety of shapes, ranging from regular cylinders and plates to complex curved surfaces and irregular protrusions. This requires the contact head to be matched with an arc-shaped or planar structure based on the workpiece's surface curvature and dimensions to reduce contact gaps and avoid magnetization blind zones. Traditional flaw detectors typically use single, fixed contact heads, requiring machine downtime for replacement when inspecting different workpieces. Replacement requires specialized tools to remove bolts and reposition the head, resulting in time-consuming processes and reduced efficiency. Furthermore, frequent disassembly and assembly can wear down the connection ports, damage the sealing rings, cause coupling agent leakage, interfere with the leakage magnetic field distribution, and lead to blurred magnetic traces and increased false positive rates.
[0005] Based on this, a universal contact for a non-destructive testing magnetic particle flaw detector is proposed. Utility Model Content
[0006] The purpose of this utility model is to provide a universal contact for a non-destructive testing magnetic particle flaw detector in order to solve the above-mentioned problems.
[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0008] A universal contact for a non-destructive testing magnetic particle flaw detector includes a connecting cover, a clamping bar connected to the connecting cover, a triangular block rotatably connected between the clamping bars, a contact point connected to the triangular block, a connecting hole formed on the triangular block, a rotating end connected to one side of the connecting cover, a connecting head connected to the other side of the connecting cover, and a stabilizing mechanism connected to the connecting head for stabilizing the docking state between the connecting head and the connecting hole.
[0009] Preferably, a rotating shaft is connected to the outer side of the triangular block, and the rotating shaft is rotatably connected to the clamping bar.
[0010] Preferably, the stabilizing mechanism includes a limiting frame, which is fixedly connected to the outside of the connector and fits into one corner of the triangular block.
[0011] Preferably, a telescopic rod is connected to one side of the limiting frame, the telescopic rod passes through the connecting cover and is connected to a telescopic column, and the telescopic column is fixedly connected to the connecting cover.
[0012] Preferably, one end of the telescopic column is rotatably connected to a rotating end, the rotating end is connected to a protrusion, and a bracket is slidably connected to the rotating end, the bracket having a groove.
[0013] Preferably, a limiting strip is connected to the telescopic column, and the limiting strip is located below the card holder.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] 1. This application adopts a triangular block structure, which allows for quick replacement of the flaw detection contact structure that is compatible with the workpiece. Furthermore, the use of a limiting frame can prevent the triangular block from rotating, stabilize the connection state of the triangular block, and ensure the stability of the detection structure during inspection.
[0016] 2. This application adopts a card holder structure, which can limit the connection cover and restrict the connection cover from rotating the triangular block. Moreover, the card holder structure can be moved upward to remove the limitation on the connection cover, so that the contact can rotate freely during flaw detection. The structure is adjustable. Attached Figure Description
[0017] Figure 1 A schematic diagram of the overall structure of the universal contact provided according to an embodiment of the present utility model is shown;
[0018] Figure 2 An exploded structural diagram of the connection point of the connecting cover according to an embodiment of the present invention is shown;
[0019] Figure 3 A schematic diagram of the connector joint provided according to an embodiment of the present invention is shown.
[0020] Legend:
[0021] 1. Connecting cover; 2. Clamping bar; 3. Rotating shaft; 4. Triangular block; 5. Contact point; 6. Connecting hole; 7. Card holder; 8. Protrusion; 9. Groove; 10. Telescopic column; 11. Limiting bar; 12. Telescopic rod; 13. Limiting frame; 14. Connector; 15. Rotating end. Detailed Implementation
[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] Please see Figures 1-3 This utility model provides a technical solution:
[0024] A universal contact for a non-destructive testing magnetic particle flaw detector includes a connecting cover 1, with clamping bars 2 connected to the connecting cover 1. Triangular blocks 4 are rotatably connected between the clamping bars 2. The clamping bars 2 ensure the stability of the connection of the triangular blocks 4. There are two clamping bars 2. There are three contacts 5 connected to the triangular blocks 4. Each contact 5 has a different structure to adapt to the surface flaw detection of workpieces with different shapes. A connecting hole 6 is opened on the triangular block 4. A rotating end 15 is connected to one side of the connecting cover 1. The rotating end 15 can rotate relative to the telescopic column 10. During installation, the rotating end 15 needs to be connected to the magnetic particle flaw detector. A connector 14 is connected to the other side of the connecting cover 1. A stabilizing mechanism is connected to the connector 14 to stabilize the docking state between the connector 14 and the connecting hole 6.
[0025] Specifically, such as Figure 1 As shown, a pivot 3 is connected to the outside of the triangular block 4. The pivot 3 is rotatably connected to the clamping bar 2. The pivot 3 is vertically connected to the outside of the triangular block 4 and is located at the center of the triangular block 4.
[0026] Specifically, such as Figure 2 and Figure 3 As shown, the stabilizing mechanism includes a limiting frame 13, which is fixedly connected to the outside of the connector 14. The limiting frame 13 fits into one corner of the triangular block 4. The lower end of the limiting frame 13 is a square frame structure, which can be locked into one corner of the triangular block 4 to restrict the rotation of the triangular block 4.
[0027] Specifically, such as Figure 3 As shown, a telescopic rod 12 is connected to one side of the limiting frame 13. The telescopic rod 12 passes through the connecting cover 1 and is connected to a telescopic column 10. The telescopic column 10 is fixedly connected to the connecting cover 1. The telescopic column 10 can drive the telescopic rod 12 to extend and retract, thereby affecting whether the limiting frame 13 is engaged with the triangular block 4.
[0028] Specifically, such as Figure 2 and Figure 3As shown, one end of the telescopic column 10 is rotatably connected to a rotating end 15, a protrusion 8 is connected to the rotating end 15, and a bracket 7 is slidably connected to the rotating end 15. The bracket 7 has a groove 9. By setting the structure of the protrusion 8 and the groove 9, the bracket 7 will not rotate around the rotating end 15, and the bracket 7 can limit the rotation of the connecting cover 1. When the bracket 7 is engaged with the connecting cover 1, the connecting cover 1 will not rotate at one end of the rotating end 15. By moving the bracket 7 upward, the limitation of the bracket 7 on the connecting cover 1 can be removed.
[0029] Specifically, such as Figure 3 As shown, a limit strip 11 is connected to the telescopic column 10. The limit strip 11 is located below the card holder 7. By setting the limit strip 11, the height of the card holder 7 is limited, so as to prevent the card holder 7 from moving down and rotating to connect to the telescopic column 10. At this time, the card holder 7 does not have the function of restricting the rotation of the connecting cover 1.
[0030] In summary, the universal contact for a non-destructive testing magnetic particle flaw detector provided in this embodiment allows for the retraction of the telescopic column 10 when flaw detection is required on a workpiece. This retraction causes the telescopic rod 12 to retract into the telescopic column 10, separating the limiting frame 13 from the triangular block 4 and simultaneously separating the connector 14 from the connecting hole 6. Subsequently, the triangular block 4 can be rotated to replace the contact 5 that is compatible with the workpiece and position it at one end of the universal contact. Then, the telescopic column 10 is extended, allowing the connector 14 to align with the connecting hole 6, completing the circuit connection. At this time, the limiting frame 13 is stably engaged on one corner of the triangular block 4, thus restricting the rotation of the triangular block 4. Depending on the flaw detection requirements, the clamp 7 can be moved up or down to adjust and control whether the contact 5 rotates during flaw detection. The rotating end 15 needs to be connected to one side of the magnetic particle flaw detector to transmit the flaw detection data to the magnetic particle flaw detector. The operator can then use the magnetic particle flaw detector to understand the workpiece defects.
[0031] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A universal contact for a non-destructive testing magnetic particle flaw detector, comprising a connecting cover (1), characterized in that, The connecting cover (1) is connected to a clamping strip (2), and a triangular block (4) is rotatably connected between the clamping strips (2). A contact point (5) is connected to the triangular block (4), and a connecting hole (6) is opened on the triangular block (4). A rotating end (15) is connected to one side of the connecting cover (1), and a connector (14) is connected to the other side of the connecting cover (1). A stabilizing mechanism for stabilizing the docking state between the connector (14) and the connecting hole (6) is connected to the connector (14).
2. The universal contact for a non-destructive testing magnetic particle flaw detector according to claim 1, characterized in that, The triangular block (4) is connected to a rotating shaft (3) on its outer side, and the rotating shaft (3) is rotatably connected to the clamping bar (2).
3. The universal contact for a non-destructive testing magnetic particle flaw detector according to claim 1, characterized in that, The stabilizing mechanism includes a limiting frame (13), which is fixedly connected to the outside of the connector (14), and the limiting frame (13) fits into one corner of the triangular block (4).
4. A universal contact for a non-destructive testing magnetic particle flaw detector according to claim 3, characterized in that, The limiting frame (13) is connected to a telescopic rod (12) on one side. The telescopic rod (12) passes through the connecting cover (1) and is connected to a telescopic column (10). The telescopic column (10) is fixedly connected to the connecting cover (1).
5. A universal contact for a non-destructive testing magnetic particle flaw detector according to claim 4, characterized in that, One end of the telescopic column (10) is rotatably connected to a rotating end (15), a protrusion (8) is connected to the rotating end (15), a card holder (7) is slidably connected to the rotating end (15), and a groove (9) is provided on the card holder (7).
6. A universal contact for a non-destructive testing magnetic particle flaw detector according to claim 5, characterized in that, The telescopic column (10) is connected to a limiting strip (11), which is located below the card holder (7).