Rotatable magnet yoke type magnetic particle flaw detector

Abstract

The utility model discloses a rotatable magnet yoke type magnetic particle flaw detector, which relates to the technical field of metal nondestructive flaw detection, and comprises a main body, the side surface of the main body is provided with two slide rails which are symmetrically arranged along the center line of the main body, the inner part of each slide rail is provided with a mounting rack I in a sliding manner, and the mounting rack I is provided with a mounting rack II in a sliding manner; and the lower end of the first mounting frame is slidably connected with the main body, and sliding strips are slidably arranged on the two sides of the first mounting frame. Compared with the conventional common magnet yoke type magnetic particle flaw detector, the rotatable magnet yoke type magnetic particle flaw detector has the advantages that when a workpiece is detected, the position of the mounting rack I is changed according to a working environment, then the sliding strip is adjusted to a proper height, and the rotatable magnet yoke type magnetic particle flaw detector can be fixed at a certain height at any time along with the movement of the sliding strip and the matching of a ball and a clamping groove; and when the angle of the lamp panel needs to be adjusted, the knob is pulled out and rotated, and the limiting column enters other grooves, so that the angle of the lamp panel can be flexibly changed, and the convenience during detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal non-destructive flaw detection, in particular to a rotatable yoke type magnetic powder flaw detector. Background Art

[0002] Magnetic particle flaw detectors have been widely used in workpiece defect detection, especially the two-contact yoke type magnetic particle flaw detector, which is widely used due to its simple operation and easy portability.

[0003] As disclosed in application number 202321532026.1, the utility model discloses a rotatable two-contact yoke-type magnetic particle detector, which may include a main probe of the flaw detector. The flaw detector probe is a concave structure with an opening facing downward. Coils are wound around the two arms of the flaw detector probe. A yoke contact is provided at the end of each arm. One end of each yoke contact is fixedly embedded in the two arms, and the other end of each yoke contact contacts the metal workpiece to be tested. The contact end of each yoke contact that contacts the metal workpiece to be tested is mounted with a connecting frame, and a rotating wheel is mounted on each connecting frame. The rotatable two-contact yoke-type magnetic particle detector also includes a housing, which is mounted on the flaw detector probe and covers the coil. The technical solution of the utility model can complete all-round detection within a 360° area by applying magnetic powder only once during the flaw detection process of the metal workpiece to be tested, thereby improving detection efficiency. At the same time, the magnetic lines of force can be perpendicular to any defects that may exist in all directions within the detection area within 360°, achieving optimal detection sensitivity and avoiding the problem of missed detection. However, the yoke-type magnetic particle detector is not convenient for adapting to metals of different planes during detection, is not convenient for flexibly changing the distance between probes, and is not convenient for observing magnetic particles.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a rotatable yoke type magnetic particle flaw detector is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a rotatable yoke type magnetic particle flaw detector to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a rotatable yoke-type magnetic particle flaw detector, comprising a main body, a slide rail being provided on the side of the main body, and two slide rails being symmetrically arranged along the center line of the main body, a mounting frame 1 being slidingly arranged inside the slide rail, and the lower end of the mounting frame 1 being slidably connected to the main body at the same time, slide bars being slidingly arranged on both sides of the mounting frame 1, and two slide bars being symmetrically arranged along the center line of the mounting frame 1.

[0007] Preferably, a slot is provided on the outside of the slide bar, and a spring one is fixedly provided inside the mounting frame one on the outside of the slot, two springs one are symmetrically provided along the center line of the mounting frame one, and a ball is rotatably provided on the side of the spring one close to the slot, and the ball is slidably connected to the slot and the slide bar at the same time.

[0008] Preferably, a telescopic rod is rotatably provided on the inner side of the lower end of the slide bar, and a light board is fixedly provided on one end of the telescopic rod. The light board is located between the slide bars, and a knob is fixedly provided on the outer side of the telescopic rod. A limiting column is fixedly provided on the side of the knob close to the slide bar.

[0009] Preferably, the limiting column is also slidably connected to the main body, an upper contact is fixedly provided at the lower end of the main body, and two upper contacts are symmetrically provided along the center line of the main body, a lower contact is rotatably provided at the lower end of the upper contact, and a gear disk is engaged with one side of the upper contact.

[0010] Preferably, a mounting shaft is fixedly provided on one side of the toothed disc close to the upper contact, and the mounting shaft is rotationally connected to both the upper contact and the lower contact. A slot is provided on one side of the mounting shaft located at the lower contact, and an insert is slidingly provided inside the slot.

[0011] Preferably, the insert is slidably connected to the lower contact at the same time, a mounting plate is fixedly provided at the lower end of the lower contact, and the mounting plate is symmetrically arranged along the center line of the lower contact, and spring 2 is fixedly provided on both sides of the mounting plate, and spring 2 is arranged in an arc shape.

[0012] Preferably, two springs are symmetrically arranged along the center line of the mounting plate, and a mounting bracket is fixedly arranged on the other end of the spring. Two mounting brackets are symmetrically arranged along the center line of the main body, and rollers are rotatably arranged at both ends of the mounting bracket, and the rollers are arranged on the opposite side of the mounting bracket.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is provided with a main body, a slide rail, a mounting frame, a slide bar, a slot, a spring, a ball, a telescopic rod, a light board, a knob and a limit column. When inspecting a workpiece, the position of the mounting frame can be changed according to usage habits and working environment, and then the slide bar can be adjusted to a suitable height. As the slide bar moves, the ball and the slot cooperate to fix it at a certain height at any time. When it is necessary to adjust the angle of the light board, the knob is pulled out and turned to make the limit column enter another slot. In this way, the angle of the light board can be flexibly changed, thereby improving the convenience during inspection.

[0015] 2. The utility model is equipped with upper contacts, lower contacts, a toothed disc, a mounting shaft, a slot, and an insert. Before testing, the insert is first pulled out, the lower contacts are then rotated to the appropriate position, the mounting shaft is rotated to reset the slot, and the insert is reinserted to change the spacing between the lower contacts, thereby quickly adapting to different testing requirements.

[0016] 3. The utility model is provided with a mounting plate, a second mounting frame, a second spring and a roller. When the lower end of the lower contact contacts the surface of the workpiece, the roller first contacts the surface of the workpiece. When the device is started, the magnetic force can attract the lower contact to the surface of the workpiece. When the surface of the workpiece to be inspected is a curved surface, the roller is always in contact with the surface of the workpiece under the action of the second spring and the second mounting frame, so as to improve the effect of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the slider of the utility model;

[0019] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0020] Figure 4 For this utility model Figure 5 The enlarged structural diagram at B in the middle;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the contact of the utility model.

[0022] In the figure: 1. Main body; 2. Slide rail; 3. Mounting frame 1; 4. Slide bar; 5. Slot; 6. Spring 1; 7. Ball bearing; 8. Telescopic rod; 9. Light board; 10. Knob; 11. Limit column; 12. Upper contact; 13. Lower contact; 14. Toothed plate; 15. Mounting shaft; 16. Slot; 17. Insert; 18. Mounting plate; 19. Mounting frame 2; 20. Spring 2; 21. Roller. DETAILED DESCRIPTION

[0023] The following will be combined with the 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.

[0024] like Figures 1-4As shown, a rotatable yoke type magnetic particle flaw detector includes a main body 1, a slide rail 2 is opened on the side of the main body 1, and two slide rails 2 are symmetrically arranged along the center line of the main body 1, a mounting frame 3 is slidably arranged inside the slide rail 2, and the lower end of the mounting frame 3 is slidably connected to the main body 1 at the same time, and slide bars 4 are slidably arranged on both sides of the mounting frame 3, and two slide bars 4 are symmetrically arranged along the center line of the mounting frame 3. When inspecting the workpiece, the position of the mounting frame 3 can be changed according to the usage habits and working environment, and then the slide bar 4 is adjusted to a suitable height. As the slide bar 4 moves, the ball 7 cooperates with the card slot 5 to fix it at a certain height at any time, and when the angle of the light board 9 needs to be adjusted, the knob 10 is pulled out and rotated to make the limit column 11 enter other slots, so that the angle of the light board 9 can be flexibly changed, thereby improving the convenience during inspection;

[0025] Furthermore, a spring is provided inside the telescopic rod 8 so that the knob 10 can always be tightened to one side of the slide bar 4 .

[0026] like Figure 1 and Figure 5As shown, a card slot 5 is provided on the outside of the slide bar 4, and a spring 6 is fixedly provided inside the mounting frame 3 on the outside of the card slot 5. Two springs 6 are symmetrically provided along the center line of the mounting frame 3, and a ball 7 is rotatably provided on the side of the spring 6 close to the card slot 5. The ball 7 is slidably connected to the card slot 5 and the slide bar 4 at the same time. A telescopic rod 8 is rotatably provided on the inside of the lower end of the slide bar 4, and a light board 9 is fixedly provided on one end of the telescopic rod 8. The light board 9 is located between the slide bars 4, and a knob 10 is fixedly provided on the outside of the telescopic rod 8. A limit column is fixedly provided on the side of the knob 10 close to the slide bar 4. 11, the limit column 11 is slidably connected to the main body 1 at the same time, the lower end of the main body 1 is fixedly provided with an upper contact 12, and the upper contact 12 is symmetrically provided with two along the center line of the main body 1, the lower end of the upper contact 12 is rotatably provided with a lower contact 13, and one side of the upper contact 12 is meshed with a toothed disc 14, and the toothed disc 14 is fixedly provided with a mounting shaft 15 on one side close to the upper contact 12, and the mounting shaft 15 is rotatably connected to the upper contact 12 and the lower contact 13 at the same time, the mounting shaft 15 is located on one side of the lower contact 13 and has a slot 16, and the slot 16 is slidably provided with an insert 17, and the insert 17 is simultaneously engaged with the lower contact 13. The contact 13 is connected by sliding. The lower end of the lower contact 13 is fixed with a mounting plate 18, and the mounting plate 18 is symmetrically arranged along the center line of the lower contact 13. Springs 20 are fixed on both sides of the mounting plate 18, and the springs 20 are arranged in an arc shape. There are two springs 20 symmetrically arranged along the center line of the mounting plate 18, and the other end of the spring 20 is fixed with a mounting frame 2 19. There are two mounting frames 19 symmetrically arranged along the center line of the main body 1, and rollers 21 are rotatably arranged at both ends of the mounting frame 2 19. The rollers 21 are arranged on the opposite side of the mounting frame 2 19. Before testing, first After the insertion strip 17 is pulled out and the lower contact 13 is then rotated to a suitable position, the installation shaft 15 is rotated to reset the slot 16 and the insertion strip 17 is reinserted to change the spacing between the lower contacts 13, thereby being able to quickly adapt to different detection requirements; when the lower end of the lower contact 13 contacts the workpiece surface, the roller 21 first contacts the workpiece surface. When the device is started, the magnetic force can attract the lower contact 13 to the workpiece surface, and when the workpiece surface to be detected is a curved surface, the roller 21 is always in contact with the workpiece surface under the action of the spring 20 and the mounting bracket 2 19, so as to improve the detection effect.

[0027] Furthermore, the second mounting frame 19 and the roller 21 are both made of iron, which makes it easy to fix the device on the workpiece.

[0028] Working principle: When using the rotatable yoke type magnetic particle detector, first, when inspecting the workpiece, the position of the mounting bracket 3 can be changed according to the usage habits and working environment, and then the slide bar 4 can be adjusted to a suitable height. As the slide bar 4 moves, the ball 7 cooperates with the card slot 5 to fix it at a certain height at any time, and when the angle of the light board 9 needs to be adjusted, the knob 10 is pulled out and rotated to make the limit column 11 enter other slots, so that the angle of the light board 9 can be flexibly changed, which improves the convenience during inspection; secondly, before inspection, the insert 17 is pulled out first, and then the insert 17 is pulled out. After rotating the lower contact 13 to the appropriate position, the mounting shaft 15 is rotated to reset the slot 16. After reinserting the insert 17, the spacing between the lower contacts 13 can be changed, allowing for quick adaptation to different inspection requirements. Finally, when the lower end of the lower contact 13 contacts the workpiece surface, the roller 21 first contacts the workpiece surface. When the device is activated, the magnetic force attracts the lower contact 13 to the workpiece surface. When the workpiece surface to be inspected is curved, the spring 20 and the mounting bracket 19 ensure that the roller 21 always contacts the workpiece surface, thereby improving the inspection effect. This is the working principle of the rotatable yoke type magnetic particle inspection machine.

Claims

1. A rotatable yoke type magnetic particle flaw detector, comprising a main body (1), characterized in that: The side of the main body (1) is provided with a slide rail (2), and two slide rails (2) are symmetrically arranged along the center line of the main body (1); a mounting frame (3) is slidably arranged inside the slide rail (2), and the lower end of the mounting frame (3) is slidably connected to the main body (1); both sides of the mounting frame (3) are slidably provided with slide bars (4), and two slide bars (4) are symmetrically arranged along the center line of the mounting frame (3).

2. A rotatable yoke type magnetic particle flaw detector according to claim 1, characterized in that: A card slot (5) is provided on the outside of the slide bar (4), and a spring (6) is fixedly provided inside the mounting frame (3) on the outside of the card slot (5). Two springs (6) are symmetrically provided along the center line of the mounting frame (3), and a ball (7) is rotatably provided on the side of the spring (6) close to the card slot (5). The ball (7) is slidably connected to the card slot (5) and the slide bar (4) at the same time.

3. A rotatable yoke type magnetic particle flaw detector according to claim 2, characterized in that: A telescopic rod (8) is rotatably provided on the inner side of the lower end of the slide bar (4), and a light board (9) is fixedly provided on one end of the telescopic rod (8). The light board (9) is located between the slide bars (4), and a knob (10) is fixedly provided on the outer side of the telescopic rod (8) located on the slide bar (4). A limiting column (11) is fixedly provided on one side of the knob (10) close to the slide bar (4).

4. A rotatable yoke type magnetic particle flaw detector according to claim 3, characterized in that: The limiting column (11) is simultaneously connected to the main body (1) in a sliding manner. An upper contact (12) is fixedly provided at the lower end of the main body (1), and two upper contacts (12) are symmetrically provided along the center line of the main body (1). A lower contact (13) is rotatably provided at the lower end of the upper contact (12), and a toothed disc (14) is provided on one side of the upper contact (12) for engagement.

5. The rotatable yoke type magnetic particle flaw detector according to claim 4, characterized in that: A mounting shaft (15) is fixedly provided on one side of the toothed disc (14) close to the upper contact (12), and the mounting shaft (15) is rotatably connected to the upper contact (12) and the lower contact (13) at the same time. A slot (16) is provided on one side of the mounting shaft (15) located at the lower contact (13), and an inserting strip (17) is slidably provided inside the slot (16).

6. The rotatable yoke type magnetic particle flaw detector according to claim 5, characterized in that: The inserting strip (17) is simultaneously slidably connected to the lower contact (13); a mounting plate (18) is fixedly provided at the lower end of the lower contact (13), and the mounting plate (18) is symmetrically arranged along the center line of the lower contact (13); a second spring (20) is fixedly provided on both sides of the mounting plate (18), and the second spring (20) is arranged in an arc shape.

7. The rotatable yoke type magnetic particle flaw detector according to claim 6, characterized in that: Two springs (20) are symmetrically arranged along the center line of the mounting plate (18), and a mounting frame (19) is fixedly arranged at the other end of the spring (20). Two mounting frames (19) are symmetrically arranged along the center line of the main body (1), and rollers (21) are rotatably arranged at both ends of the mounting frame (19), and the rollers (21) are arranged on the opposite side of the mounting frame (19).

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