Special deep hole inner surface magnetic defect detector

Abstract

The utility model discloses a special deep hole inner surface magnetic defect detector which comprises a main body assembly, a flaw detection assembly is arranged on the main body assembly, and the flaw detection assembly comprises a motor, a first gear, a second gear, a threaded sleeve, a threaded rod, a top plate, a guide rod, a bottom plate, a mounting seat, an image sensor and a light supplementing lamp; an output shaft of the motor is fixedly connected with a first gear, the first gear is meshed with a second gear, the top of the second gear is fixedly connected with a threaded sleeve, the inner side wall of the threaded sleeve is in threaded connection with a threaded rod, and the top end of the threaded rod is fixedly connected with a top plate; and two guide rods are symmetrically and fixedly connected to the bottom of the top plate. The motor drives the gear to rotate, so that the threaded sleeve rotates, and in the rotating process of the threaded sleeve, the threaded rod is driven to move along the guide rod, and the image sensor and the light supplementing lamp are driven to enter the deep hole, so that image acquisition of the inner surface of the deep hole is completed, and the magnetic powder inspection precision of the inner surface of the deep hole is improved.

Description

Technical Field:

[0002] The utility model relates to a flaw detector, in particular to a special magnetic particle flaw detector for the inner surface of deep holes, belonging to the technical field of magnetic particle flaw detectors. Background Technique:

[0004] A magnetic particle flaw detector is a special induction non-destructive flaw detection device with extremely strong magnetism. It can display and record the distribution curve image of the leakage magnetic field generated by magnetic materials, so as to judge whether there are defects in the structural parts and their properties and sizes. Magnetic particle flaw detectors are widely used in the overall material detection of steel structures, pressure vessels, pressure-bearing pipeline welds and plates, castings, forgings, etc., as well as in industries such as manufacturing, aviation, aerospace, railway, and automobile, for detecting internal defects and cracks in materials.

[0005] When the existing magnetic particle flaw detector is in use, it detects the distribution of magnetic powder on the surface to be tested through an image sensor, so as to determine the position and shape of internal defects of parts. However, when detecting the inner surface of deep holes of parts, due to the large hole depth, it is not convenient for the image sensor to collect magnetic powder images at close range, and it is difficult to smoothly complete the magnetic particle flaw detection work on the inner surface of deep holes. Therefore, a special magnetic particle flaw detector for the inner surface of deep holes is proposed. Content of the Utility Model:

[0007] The purpose of the utility model is to provide a special magnetic particle flaw detector for the inner surface of deep holes to solve one of the problems raised in the above background technique.

[0008] The utility model is implemented by the following technical scheme: A special magnetic particle flaw detector for the inner surface of deep holes includes a main body assembly, and a flaw detection assembly is arranged on the main body assembly. The flaw detection assembly includes a motor, a first gear, a second gear, a threaded sleeve, a threaded rod, a top plate, a guide rod, a bottom plate, a mounting seat, an image sensor and a supplementary light;

[0009] The output shaft of the motor is fixedly connected to the first gear, the first gear meshes with the second gear, the top of the second gear is fixedly connected to the threaded sleeve, the inner side wall of the threaded sleeve is threadedly connected to the threaded rod, the top end of the threaded rod is fixedly connected to the top plate, two guide rods are symmetrically and fixedly connected to the bottom of the top plate, the bottom ends of the guide rods are fixedly connected to the bottom plate, the bottom of the bottom plate is fixedly connected to the mounting seat, and the image sensor and the supplementary light are installed on the outer side wall and the bottom of the mounting seat. The motor drives the first gear to rotate, and by the cooperation of the first gear and the second gear, the threaded sleeve rotates. During the rotation of the threaded sleeve, the threaded rod and the guide rod are driven to move, driving the image sensor and the supplementary light into the deep hole. The supplementary light is used to improve the brightness of the inner surface of the deep hole, and the image sensor is used to collect the inner surface image, providing a basis for the flaw detection of the inner surface of the deep hole.

[0010] As a further preference of this technical solution: The main body assembly includes a probe and an electromagnet, and electromagnets are symmetrically and fixedly connected to the bottom of the probe.

[0011] As a further preference of this technical solution: The flaw detection assembly further includes a drive box, and the drive box is fixedly connected to the top of the probe.

[0012] As a further preference of this technical solution: The first gear and the second gear are rotatably connected inside the drive box.

[0013] As a further preference of this technical solution: A through hole is provided at the bottom of the probe.

[0014] As a further preference of this technical solution: One end of the threaded rod penetrates through the bottom of the through hole.

[0015] As a further preference of this technical solution: The main body assembly further includes a magnetic particle flaw detector main body and a wire. A wire is installed on one side of the magnetic particle flaw detector main body, and the wire is installed on one side of the probe.

[0016] As a further preference of this technical solution: The magnetic particle flaw detector main body is electrically connected to the probe through the wire.

[0017] Advantages of the present utility model: The present utility model drives the gear to rotate through a motor, so that the threaded sleeve rotates. During the rotation of the threaded sleeve, the threaded rod and the guide rod are driven to move, driving the image sensor and the fill light into the deep hole to complete the image acquisition of the inner surface of the deep hole, improving the magnetic particle flaw detection accuracy of the inner surface of the deep hole. Brief description of the drawings:

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a structural schematic diagram of the present utility model;

[0021] Figure 2 It is a structural schematic diagram of the probe of the present utility model;

[0022] Figure 3 It is a bottom view structural schematic diagram of the probe of the present utility model;

[0023] Figure 4 It is an enlarged structural schematic diagram of the mounting seat of the present utility model.

[0024] In the figure: 10, main body assembly; 11, main body of magnetic particle flaw detector; 12, wire; 13, probe; 14, electromagnet; 15, through hole; 20, flaw detection assembly; 21, drive box; 22, motor; 23, first gear; 24, second gear; 25, threaded sleeve; 26, threaded rod; 27, top plate; 28, guide rod; 29, bottom plate; 210, mounting seat; 211, image sensor; 212, fill light. Specific implementation manner:

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment

[0028] Please refer to Figures 1-4 , the present invention provides a technical solution: a special magnetic particle flaw detector for the inner surface of deep holes, including a main body assembly 10, a flaw detection assembly 20 is arranged on the main body assembly 10, and the flaw detection assembly 20 includes a motor 22, a first gear 23, a second gear 24, a threaded sleeve 25, a threaded rod 26, a top plate 27, a guide rod 28, a bottom plate 29, a mounting seat 210, an image sensor 211 and a fill light 212;

[0029] The output shaft of the motor 22 is fixedly connected to the first gear 23, the first gear 23 meshes with the second gear 24, the top of the second gear 24 is fixedly connected to the threaded sleeve 25, the inner side wall of the threaded sleeve 25 is threadedly connected to the threaded rod 26, the top end of the threaded rod 26 is fixedly connected to the top plate 27, two guide rods 28 are symmetrically and fixedly connected to the bottom of the top plate 27, the bottom end of the guide rod 28 is fixedly connected to the bottom plate 29, the bottom of the bottom plate 29 is fixedly connected to the mounting seat 210, the outer side wall and the bottom of the mounting seat 210 are both provided with an image sensor 211 and a fill light 212. By driving the first gear 23 to rotate by the motor 22, and using the cooperation of the first gear 23 and the second gear 24, the threaded sleeve 25 is rotated. During the rotation of the threaded sleeve 25, the threaded rod 26 and the guide rod 28 are driven to move, driving the image sensor 211 and the fill light 212 into the deep hole. The fill light 212 is used to improve the brightness of the inner surface of the deep hole, and the image sensor 211 is used to collect the inner surface image, providing a basis for flaw detection of the inner surface of the deep hole.

[0030] In this embodiment, specifically: The main body assembly 10 includes a probe 13 and an electromagnet 14. The electromagnets 14 are symmetrically and fixedly connected to the bottom of the probe 13. The electromagnets 14 are used to magnetize the part to be tested. During use, the probe 13 is placed in the area near the deep hole. The electromagnets 14 are turned on to generate a strong magnetic field to magnetize the part. Magnetic powder is sprayed on the inner surface of the deep hole. There will be more magnetic powder in the area near the defects of the magnetized part.

[0031] In this embodiment, specifically: The flaw detection assembly 20 further includes a drive box 21. The drive box 21 is fixedly connected to the top of the probe 13. The drive box 21 is used to protect internal parts such as gears.

[0032] In this embodiment, specifically: The first gear 23 and the second gear 24 are rotatably connected inside the drive box 21. Through the cooperation of the first gear 23 and the second gear 24, the threaded sleeve 25 is driven to rotate.

[0033] In this embodiment, specifically: A through hole 15 is provided at the bottom of the probe 13. The through hole 15 provides a clearance for the movement of the threaded rod 26.

[0034] In this embodiment, specifically: One end of the threaded rod 26 penetrates through the bottom of the through hole 15. When performing flaw detection, the threaded rod 26 moves downward through the through hole 15 and enters the interior of the deep hole.

[0035] In this embodiment, specifically: The main body assembly 10 further includes a magnetic particle flaw detector main body 11 and a wire 12. The wire 12 is installed on one side of the magnetic particle flaw detector main body 11. The wire 12 is installed on one side of the probe 13. The length of the wire 12 can be adjusted as needed.

[0036] In this embodiment, specifically: The magnetic particle flaw detector main body 11 is electrically connected to the probe 13 through the wire 12. A power supply module is provided inside the magnetic particle flaw detector main body 11 to supply power to the probe 13. At the same time, a display screen and an operation panel are installed on the magnetic particle flaw detector main body 11 to facilitate the operation of the magnetic particle flaw detector by the staff.

[0037] Working principle or structural principle: During use, the probe 13 is placed near the deep hole of the part. The electromagnets 14 are turned on to generate a strong magnetic field to magnetize the part. Magnetic powder is sprayed on the inner surface of the deep hole. The motor 22 drives the first gear 23 to rotate. By using the cooperation of the first gear 23 and the second gear 24, the threaded sleeve 25 is rotated. During the rotation of the threaded sleeve 25, the threaded rod 26 and the guide rod 28 are driven to move, driving the image sensor 211 and the fill light 212 into the interior of the deep hole. The fill light 212 is used to improve the brightness of the inner surface of the deep hole. The image sensor 211 is used to collect the inner surface image, providing a basis for flaw detection of the inner surface of the deep hole and improving the accuracy of magnetic particle flaw detection of the inner surface of the deep hole.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special deep hole inner surface magnetic particle flaw detector, comprising a main body component (10), characterized in that: The main body component (10) is provided with a flaw detection component (20), and the flaw detection component (20) comprises a motor (22), a first gear (23), a second gear (24), a threaded sleeve (25), a threaded rod (26), a top plate (27), a guide rod (28), a bottom plate (29), a mounting seat (210), an image sensor (211) and a fill light (212); The output shaft of the motor (22) is fixedly connected to the first gear (23), the first gear (23) is meshed with the second gear (24), the top of the second gear (24) is fixedly connected to a threaded sleeve (25), the inner side wall of the threaded sleeve (25) is threadedly connected to a threaded rod (26), the top of the threaded rod (26) is fixedly connected to a top plate (27), the bottom of the top plate (27) is symmetrically fixedly connected to two guide rods (28), the bottom end of the guide rod (28) is fixedly connected to a bottom plate (29), the bottom of the bottom plate (29) is fixedly connected to a mounting seat (210), and the outer side wall and bottom of the mounting seat (210) are both mounted with an image sensor (211) and a fill light (212).

2. A special deep hole inner surface magnetic particle flaw detector according to claim 1, characterized in that: The main body component (10) comprises a probe (13) and an electromagnet (14), and the bottom of the probe (13) is symmetrically fixedly connected to the electromagnet (14).

3. A special deep hole inner surface magnetic particle flaw detector according to claim 2, characterized in that: The flaw detection assembly (20) further comprises a drive box (21), and the top of the probe (13) is fixedly connected to the drive box (21).

4. A special deep hole inner surface magnetic particle flaw detector according to claim 3, characterized in that: The first gear (23) and the second gear (24) are rotatably connected to the interior of the driving box (21).

5. The special deep hole inner surface magnetic particle flaw detector according to claim 2 is characterized in that: A through hole (15) is provided at the bottom of the probe (13).

6. A special deep hole inner surface magnetic particle flaw detector according to claim 5, characterized in that: One end of the threaded rod (26) passes through the bottom of the through hole (15).

7. The special deep hole inner surface magnetic particle flaw detector according to claim 2 is characterized in that: The main body component (10) further comprises a magnetic particle flaw detector body (11) and a wire (12); the wire (12) is installed on one side of the magnetic particle flaw detector body (11), and the wire (12) is installed on one side of the probe (13).

8. The special deep hole inner surface magnetic particle flaw detector according to claim 7 is characterized in that: The magnetic particle flaw detector body (11) is electrically connected to the probe (13) via a wire (12).

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