Magnet yoke type magnetic particle flaw detector with insulating shell

Abstract

The utility model discloses a magnet yoke type magnetic particle flaw detector with an insulating shell, which comprises an insulating shell body and a movable concave plate arranged at the bottom of the inner wall of the insulating shell body, a driving clamping component is arranged on the concave plate, an insulating plate is arranged on the front surface of the concave plate, a detachable mounting plate is arranged at the bottom of the insulating plate, and a clamping component is arranged on the concave plate. A base is installed at the bottom of the insulation shell body, and the insulation shell further comprises a fixing groove which is formed in the top of the base. According to the magnetic yoke type magnetic particle flaw detector with the insulating shell, the insulating shell body, the insulating plate, the mounting plate, the base, the fixing groove, the servo motor, the threaded rod, the threaded block, the clamping groove, the clamping block, the connecting block, the rotating block, the adjusting rod, the limiting block, the limiting groove, the through opening and the positioning block are matched with one another, so that the magnetic yoke type magnetic particle flaw detector with the insulating shell is realized; the magnetic particle flaw detector is located in the insulating shell when used, so that the safety of the flaw detector in use is improved, and meanwhile, the influence on the detection effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of yoke type magnetic particle flaw detectors, in particular to a yoke type magnetic particle flaw detector with an insulating housing. Background Technique

[0002] Magnetic particle flaw detection is a technique for detecting workpieces through the interaction between the leakage magnetic field at the defects of the workpiece and the magnetic particles. During detection, it mainly uses the difference in magnetic permeability between the surface and near-surface defects (such as cracks, slag inclusions, hair cracks, etc.) of steel products and the magnetic permeability of steel for flaw detection. After the workpiece to be detected is magnetized, the magnetic field at the discontinuous part of the workpiece defect will be distorted, forming a leakage magnetic field on the surface of the workpiece at the part where partial magnetic flux leaks, thereby attracting magnetic particles to form a magnetic particle accumulation - magnetic marks (magnetic powder is sprinkled on the detection surface after the workpiece is magnetized). In this way, under appropriate lighting conditions (in actual situations, generally, the video data of the detected part of the workpiece is displayed on the display screen through a camera, and the detection personnel can more easily discover the quality problems of the workpiece), the position and shape of the defects are revealed, and observing and distinguishing these magnetic particle accumulations achieves the purpose of magnetic particle flaw detection.

[0003] According to the application number: CN202111039030.X, a magnetic particle flaw detector for multi-station detection includes a support workbench, two driving motors, and two electromagnets. The two driving motors are installed on the top of the support workbench by screws, the two driving motors are symmetrically arranged, the movable ends of the two driving motors are both installed with a first mounting plate by screws, a first rotating wheel corresponding to the position is provided on one side of each of the two first mounting plates, and a fixing mechanism is connected between the two first rotating wheels and the two first mounting plates.

[0004] When the flaw detector in the above case performs flaw detection on the workpiece, it is always in an exposed state to the outside. When the flaw detector works, it will cause phenomena such as electric leakage, which is likely to cause potential safety hazards and further affect the detection effect. For this reason, we provide a yoke type magnetic particle flaw detector with an insulating housing. Content of the Utility Model

[0005] The purpose of the utility model is to provide a yoke type magnetic particle flaw detector with an insulating housing to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A yoke type magnetic particle flaw detector with an insulating housing includes an insulating housing body, and a concave plate movably arranged at the bottom of the inner wall of the insulating housing body. A driving and clamping assembly is arranged on the concave plate, an insulating plate is installed on the front surface of the concave plate, a detachable mounting plate is arranged at the bottom of the insulating plate, and a base is installed at the bottom of the insulating housing body.

[0007] Preferably, it further includes a fixing groove, the fixing groove is opened at the top of the base, a servo motor is installed on the back surface of the inner wall of the fixing groove, a threaded rod is installed at the front end of the output shaft of the servo motor, and a threaded block is threadedly connected to the surface of the threaded rod at a position corresponding to the mounting plate.

[0008] Preferably, a clamping groove is opened at the bottom of the left side of the insulating plate, a clamping block is installed at the top of the mounting plate at a position corresponding to the clamping groove, and the top of the clamping block penetrates through the clamping groove and extends into it to be in contact with the inner wall of the clamping groove.

[0009] Preferably, a connecting block is installed at the top of the mounting plate, a rotating block is arranged on the front surface of the connecting block, an adjusting rod threadedly connected to the connecting block is installed on the back surface of the rotating block, and the rear end of the adjusting rod penetrates through the connecting block and extends to the outside of it.

[0010] Preferably, a limiting block is installed at the rear end of the adjusting rod, a limiting groove is opened at the front surface of the clamping block at a position corresponding to the limiting block, and the back surface of the limiting block sequentially penetrates through the clamping groove and the limiting groove and extends into the limiting groove to be in contact with the inner wall of the limiting groove.

[0011] Preferably, through openings are opened on both the left and right sides at the bottom of the front surface of the concave plate, positioning blocks are installed at the bottom of the inner wall of the insulating shell body at positions corresponding to the through openings, and the tops of the positioning blocks penetrate through the through openings and extend into them to be in contact with the inner walls of the through openings.

[0012] Preferably, an electromagnet is installed at the top of the inner wall of the concave plate, and a flaw detection camera is arranged at the top of the inner wall of the insulating shell body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Through the mutual cooperation of the insulating shell body, insulating plate, mounting plate, base, fixing groove, servo motor, threaded rod, threaded block, clamping groove, clamping block, connecting block, rotating block, adjusting rod, limiting block, limiting groove, through opening and positioning block of the present utility model, a yoke type magnetic particle flaw detector with an insulating shell is realized, so that the flaw detector is located inside the insulating shell during use, thereby improving the safety during the use of the flaw detector and avoiding affecting the detection effect at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural sectional view of the front view of the present utility model;

[0017] Figure 3 is a structural sectional view of the side view of the present utility model;

[0018] Figure 4 This is a structural sectional view of the side view of the insulating plate, mounting plate, limiting block and limiting groove of the present utility model.

[0019] In the figure: 1 insulating shell body, 2 concave plate, 3 driving and clamping assembly, 4 insulating plate, 5 mounting plate, 6 base, 7 fixing groove, 8 servo motor, 9 threaded rod, 10 threaded block, 11 card slot, 12 card block, 13 connecting block, 14 rotating block, 15 adjusting rod, 16 limiting block, 17 limiting groove, 18 through hole, 19 positioning block, 20 electromagnet, 21 flaw detection camera. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , a yoke type magnetic particle flaw detector with an insulating shell, including an insulating shell body 1, and a movable concave plate 2 provided at the bottom of the inner wall of the insulating shell body 1. One side of the concave plate 2 close to the inner wall of the insulating shell body 1 is in contact with the inner wall of the insulating shell body 1. A driving and clamping assembly 3 is provided on the concave plate 2. The front surface of the concave plate 2 is fixedly connected with an insulating plate 4. The bottom of the insulating plate 4 is provided with a detachable mounting plate 5. The top of the mounting plate 5 is in contact with the bottom of the insulating plate 4. The bottom of the insulating shell body 1 is fixedly connected with a base 6. The bottom of the insulating plate 4 is in contact with the top of the base 6.

[0022] Furthermore, the driving and clamping assembly 3 includes a rotating motor. The rotating motor is installed in the groove on the left side of the inner wall of the concave plate 2. A rotating shaft is rotatably connected to the groove on the right side of the inner wall of the concave plate 2 through a bearing. The left end of the rotating shaft and the right end of the output shaft of the rotating motor are both fixedly connected with an electric push rod through a mounting block. A clamping block is fixedly connected to the output end of the electric push rod.

[0023] The top of the inner wall of the concave plate 2 is fixedly connected with an electromagnet 20. A flaw detection camera 21 is provided on the top of the inner wall of the insulating shell body 1. The left side of the insulating shell body 1 is fixedly connected to the left side of the inner wall of the insulating shell body 1 through a cylinder.

[0024] Furthermore, a display screen is fixedly connected to the right side of the insulating shell body 1. The display screen and the flaw detection camera 21 are electrically connected.

[0025] It also includes a fixing groove 7, which is opened at the top of the base 6. A servo motor 8 is fixedly connected to the back of the inner wall of the fixing groove 7, and a threaded rod 9 is fixedly connected to the front end of the output shaft of the servo motor 8. A threaded block 10 is threadedly connected to the surface of the threaded rod 9 and the position corresponding to the mounting plate 5. The surface of the threaded block 10 is in sliding contact with the inner wall of the fixing groove 7, and the top of the threaded block 10 is fixedly connected to the bottom of the mounting plate 5.

[0026] A card slot 11 is provided at the bottom of the left side of the insulating plate 4, and a card block 12 is fixedly connected to the top of the mounting plate 5 and corresponding to the position of the card slot 11. The top of the card block 12 passes through the card slot 11 and extends to its interior and contacts the inner wall of the card slot 11. The top of the mounting plate 5 is fixedly connected to a connecting block 13. A rotating block 14 is provided on the front of the connecting block 13. The side of the rotating block 14 close to the connecting block 13 contacts the connecting block 13. The back of the rotating block 14 is fixedly connected to an adjusting rod 15 threadedly connected to the connecting block 13. The rear end of the adjusting rod 15 passes through the connecting block 13 and extends to its outside. The rear end of the adjusting rod 15 is fixedly connected to a limiting block 16. A limiting groove 17 is provided on the front of the card block 12 and corresponding to the position of the limiting block 16. The back of the limiting block 16 sequentially passes through the card slot 11 and the limiting groove 17 and extends to the interior of the limiting groove 17 and contacts the inner wall of the limiting groove 17. The shape of the limiting block 16 and the limiting groove 17 are both cylindrical.

[0027] Through openings 18 are provided on both the left and right sides of the bottom of the front side of the concave plate 2. The front, back and bottom of the through opening 18 are all open. A positioning block 19 is fixedly connected to the bottom of the inner wall of the insulating shell body 1 and corresponds to the position of the through opening 18. The top of the positioning block 19 passes through the through opening 18 and extends to its interior to contact the inner wall of the through opening 18.

[0028] Specifically, the steel workpiece is placed between the two clamps, and then the electric push rod is started. The electric push rod drives the clamp to clamp the workpiece, and then the electromagnet 20 is turned on. The electromagnet 20 generates a magnetic force to magnetize the steel workpiece, and then drives the workpiece to move to the outside of the insulating shell body 1 through the concave plate 2. The inspector sprinkles magnetic powder on the surface of the workpiece to be inspected, and then drives the concave plate 2 and the workpiece to move again to the inside of the insulating shell body 1 through the servo motor 8. After the workpiece to be inspected is magnetized, the magnetic field at the discontinuous defect of the workpiece will be distorted, forming partial magnetic flux leakage, and a leakage magnetic field is generated on the surface of the workpiece, thereby attracting magnetic powder to form magnetic powder accumulation magnetic traces at the defect. In this way, the video data of the workpiece inspection part is displayed on the display screen through the flaw detection camera 21, and the rotating motor is started. The rotating motor can drive the workpiece to rotate slowly, so that the inspector can better find the quality problems of the workpiece (revealing the defect position and shape, and observing and distinguishing the accumulation of these magnetic powders to achieve the purpose of magnetic particle inspection).

[0029] Specifically, when the structure on the concave plate 2 and the insulating shell body 1 need to be disassembled for maintenance and repair in the later stage, the concave plate 2 is moved to the outside of the insulating shell body 1, and then the rotating block 14 is rotated. The rotating block 14 drives the adjusting rod 15 to rotate and move forward. The adjusting rod 15 drives the limiting block 16 to rotate and move forward, so that the limiting block 16 is separated from the limiting groove 17. Then, the insulating plate 4 is pulled to the right. The insulating plate 4 drives the clamping groove 11 and the clamping block 12 to be separated. The insulating plate 4 drives the concave plate 2 to move to the right, so that the insulating plate 4 drives the concave plate 2 to be detached from the insulating shell body 1.

[0030] Through the mutual cooperation of the insulating shell body 1, the insulating plate 4, the mounting plate 5, the base 6, the fixing groove 7, the servo motor 8, the threaded rod 9, the threaded block 10, the clamping groove 11, the clamping block 12, the connecting block 13, the rotating block 14, the adjusting rod 15, the limiting block 16, the limiting groove 17, the through port 18 and the positioning block 19, a yoke type magnetic particle flaw detector with an insulating shell is realized, so that the magnetic particle flaw detector is located inside the insulating shell during use, avoiding the influence of environmental factors such as external magnetic fields on the flaw detection of workpieces and avoiding affecting the detection effect.

[0031] During use, when the workpiece detection is completed, the servo motor 8 is started. The servo motor 8 drives the threaded rod 9 to rotate through the output shaft. The threaded rod 9 drives the threaded block 10 to move forward. The threaded block 10 drives the insulating plate 4 and the concave plate 2 to move forward through the mounting plate 5. The concave plate 2 drives the workpiece to be withdrawn from the insulating shell body 1.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A yoke type magnetic particle flaw detector with an insulating housing, characterized in that: It includes an insulating shell body (1), and a movable concave plate (2) arranged at the bottom of the inner wall of the insulating shell body (1). A driving clamping assembly (3) is arranged on the concave plate (2). An insulating plate (4) is installed on the front surface of the concave plate (2). A detachable mounting plate (5) is arranged at the bottom of the insulating plate (4). A base (6) is installed at the bottom of the insulating shell body (1).

2. The yoke type magnetic particle flaw detector with an insulating housing according to claim 1, characterized in that: It further includes a fixing groove (7). The fixing groove (7) is opened at the top of the base (6). A servo motor (8) is installed on the back surface of the inner wall of the fixing groove (7). A threaded rod (9) is installed at the front end of the output shaft of the servo motor (8). A threaded block (10) is threadedly connected to the surface of the threaded rod (9) at a position corresponding to the mounting plate (5).

3. The yoke type magnetic particle flaw detector with an insulating housing according to claim 2, characterized in that: A clamping groove (11) is opened at the bottom on the left side of the insulating plate (4). A clamping block (12) is installed at the top of the mounting plate (5) at a position corresponding to the clamping groove (11). The top of the clamping block (12) penetrates through the clamping groove (11) and extends into its interior to be in contact with the inner wall of the clamping groove (11).

4. A yoke-type magnetic particle flaw detector with an insulating housing according to claim 3, characterized in that: A connecting block (13) is installed at the top of the mounting plate (5). A rotating block (14) is arranged on the front surface of the connecting block (13). An adjusting rod (15) threadedly connected to the connecting block (13) is installed on the back surface of the rotating block (14). The rear end of the adjusting rod (15) penetrates through the connecting block (13) and extends to the outside thereof.

5. A yoke type magnetic particle flaw detector with an insulating housing according to claim 4, characterized in that: A limiting block (16) is installed at the rear end of the adjusting rod (15). A limiting groove (17) is opened at the front surface of the clamping block (12) at a position corresponding to the limiting block (16). The back surface of the limiting block (16) sequentially penetrates through the clamping groove (11) and the limiting groove (17) and extends into the interior of the limiting groove (17) to be in contact with the inner wall of the limiting groove (17).

6. The yoke type magnetic particle flaw detector with an insulating housing according to claim 5, characterized in that: Through openings (18) are opened at the left and right sides at the bottom of the front surface of the concave plate (2). Positioning blocks (19) are installed at the bottom of the inner wall of the insulating shell body (1) at positions corresponding to the through openings (18). The top of the positioning block (19) penetrates through the through opening (18) and extends into its interior to be in contact with the inner wall of the through opening (18).

7. A yoke-type magnetic particle flaw detector with an insulating housing according to claim 1, characterized in that: An electromagnet (20) is installed at the top of the inner wall of the concave plate (2). A flaw detection camera (21) is arranged at the top of the inner wall of the insulating shell body (1).

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