CN113655115A - Telescopic alternating current magnetic yoke probe device - Google Patents
Telescopic alternating current magnetic yoke probe device Download PDFInfo
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- CN113655115A CN113655115A CN202110823857.3A CN202110823857A CN113655115A CN 113655115 A CN113655115 A CN 113655115A CN 202110823857 A CN202110823857 A CN 202110823857A CN 113655115 A CN113655115 A CN 113655115A
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- telescopic
- magnetic yoke
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- contact
- probe device
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 37
- 239000000523 sample Substances 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 230000005415 magnetization Effects 0.000 abstract description 4
- 239000006247 magnetic powder Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to a telescopic alternating current magnetic yoke probe device which comprises a shell, a magnetic yoke iron core, a contact and a telescopic mechanism, wherein the magnetic yoke iron core is arranged on the shell, the contact comprises a plurality of contact balls, and the contact balls are in telescopic connection with the shell through the telescopic mechanism. According to the invention, the contact balls are in telescopic connection with the shell through the telescopic mechanism, and the contact balls can be compressed towards the direction close to the magnet yoke iron core, so that the shape of the contact surface formed by the contact balls can be changed according to the shape of the surface of a workpiece, the contact area between the contact and the workpiece is increased, the effective magnetization intensity of the workpiece in the magnetic powder detection process is improved, and the defect detection rate is ensured.
Description
Technical Field
The invention relates to the technical field of magnetic yoke probes, in particular to a telescopic alternating current magnetic yoke probe device.
Background
The AC magnetic yoke flaw detector is a conventional instrument for nondestructive detection and is also a common device for detecting defects on the surface or near surface of a ferromagnetic material. The method has high detection sensitivity and simple and reliable process, so the method is widely adopted.
However, the shape of a magnetic yoke probe of the alternating current magnetic yoke flaw detector is fixed, and when the magnetic yoke probe is in contact with a workpiece with an irregular surface for detection, the workpiece is not well magnetized, and the defect detection rate is affected.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem of poor contact between the magnetic yoke probe and the workpiece in the prior art.
In order to solve the technical problem, the invention provides a telescopic alternating current magnetic yoke probe device which comprises a shell, a magnetic yoke iron core, a contact and a telescopic mechanism, wherein the magnetic yoke iron core is arranged on the shell, the contact comprises a plurality of contact balls, and the contact balls are in telescopic connection with the shell through the telescopic mechanism.
In one embodiment of the present invention, the telescopic mechanism comprises:
the movable block is connected in the shell in a sliding mode, and one end of the sliding block is connected with the contact ball;
the spring post is arranged in the shell and is connected with the other end of the movable block;
the telescopic spring is sleeved on the spring column, one end of the spring is connected with the other end of the movable block, and the other end of the telescopic spring is connected with the shell.
In one embodiment of the invention, the telescopic mechanisms are distributed in the shell in an array manner, and a plurality of telescopic mechanisms are connected in a sliding manner.
In one embodiment of the invention, the housing comprises: the telescopic mechanism comprises a movable joint and a limiting sleeve, wherein the movable joint is connected with the limiting sleeve, and the telescopic mechanism is arranged in the limiting sleeve.
In one embodiment of the invention, the movable joint comprises: the magnetic yoke iron core is connected with the upper joint.
In one embodiment of the invention, the upper joint and the lower joint are rotationally connected by a screw.
In one embodiment of the invention, the upper joint is rotatably connected with the yoke core through a screw.
In one embodiment of the invention, the shell is provided with a fixing mechanism, the fixing mechanism comprises a through groove and groove teeth, the through groove is arranged on the side wall of the shell, the groove teeth are movably connected with the through groove, and the groove teeth press the telescopic mechanism tightly.
In one embodiment of the invention, the through groove is a threaded hole, the groove tooth is a bolt, and the telescopic mechanism is pressed by tightening the bolt.
In one embodiment of the invention, the contact ball is provided in the shape of a spherical ball.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the telescopic alternating current magnetic yoke probe device, the contact balls are in telescopic connection with the shell through the telescopic mechanism, and the contact balls can be compressed towards the direction close to the magnetic yoke iron core, so that the shape of the contact surface formed by the contact balls can be changed according to the shape of the surface of a workpiece, the contact area between the contact and the workpiece is increased, the effective magnetization intensity of the workpiece in the magnetic powder detection process is improved, and the defect detection rate is ensured.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the telescoping mechanism of the present invention;
FIG. 3 is a schematic view of the securing mechanism of the present invention;
the specification reference numbers indicate: 1, a shell; 2. a yoke core; 3. a telescoping mechanism; 4. contacting the ball; 5. a fixing mechanism; 11. a limiting sleeve; 12. a movable joint; 121. an upper joint; 122. the lower joint; 31. a movable block; 32. a spring post; 33. a tension spring; 51. a through groove; 52. and (4) groove teeth.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1-3, the telescopic ac magnetic yoke probe device of the present invention includes a housing 1, a magnetic yoke core 2, a contact and a telescopic mechanism 3, wherein the magnetic yoke core 2 is disposed on the housing 1, the contact includes a plurality of contact balls 4, and the contact balls 4 are telescopically connected with the housing 1 through the telescopic mechanism 3.
The working principle and the beneficial effects of the technical scheme are as follows: when irregular workpieces such as a bent surface, a wavy surface and a spherical surface are detected, the contact is contacted with the workpieces, the shell is pressed downwards, the contact ball 4 is in telescopic connection with the shell 1 through the telescopic mechanism 3, the contact ball 4 can be compressed towards the direction close to the magnetic yoke iron core 2, the shape of the contact surface formed by the contact balls 4 can be changed according to the shape of the workpiece surface, the contact area of the contact and the workpieces is increased, the effective magnetization intensity of the magnetic yoke iron core 2 to the workpieces in the magnetic powder detection process is improved, and the defect detection rate is ensured.
Preferably, with reference to fig. 1 and 2, the telescopic mechanism 3 shown comprises:
the movable block 31 is connected in the shell 1 in a sliding manner, and one end of the sliding block is connected with the contact ball 4;
the spring column 32 is arranged in the shell 1, and is connected with the other end of the movable block 31;
the telescopic spring 33 is sleeved on the spring column 32, one end of the spring is connected with the other end of the movable block 31, and the other end of the telescopic spring 33 is connected with the shell 1.
Preferably, as shown in fig. 3, the telescopic mechanisms 3 are distributed in the housing 1 in an array manner, and the plurality of telescopic mechanisms 3 are slidably connected with each other.
Through the array type distribution telescopic mechanism 3, the contact balls 4 can be uniformly distributed, and the stability of the contact is ensured.
Preferably, as shown in fig. 1, the housing 1 includes: the telescopic mechanism comprises a movable joint 12 and a limiting sleeve 11, wherein the movable joint 12 is connected with the limiting sleeve 11, and the telescopic mechanism 3 is arranged in the limiting sleeve 11.
Preferably, among them, the movable joint 12 includes: the upper joint 121 and the lower joint 122 are rotatably connected, the limit sleeve 11 is connected with the lower joint 122, and the yoke core 2 is connected with the upper joint 121.
Preferably, the upper joint 121 and the lower joint 122 are rotatably connected by a screw.
Preferably, the upper joint 121 and the yoke core 2 are rotatably coupled by a screw.
The upper joint 121 and the lower joint 122 are connected through the screw, when the probe device is detected, if the interference phenomenon of the probe device and a workpiece exists, the rotation between the limiting sleeve 11 and the magnetic yoke iron core 2 can be realized according to requirements, the applicability of the probe device to different working environments is increased, the magnetic yoke iron core 2 is connected with the upper joint 121, and the degree of freedom of rotation is better.
Preferably, as shown in fig. 3, a fixing mechanism 5 is arranged on the housing 1, the fixing mechanism 5 includes a through groove 51 and a groove tooth 52, the through groove 51 is arranged on a side wall of the housing 1, the groove tooth 52 is movably connected with the through groove 51, and the groove tooth 52 compresses the telescopic mechanism 3.
Preferably, the through groove 51 is a threaded hole, the groove tooth 52 is a bolt, and the telescopic mechanism 3 is pressed by tightening the bolt.
When the probe device is not used, the compression device is tightly pressed inside the shell 1 by screwing the bolt, the telescopic mechanism 3 is locked, the telescopic mechanism 3 is not compressed, and the service life is prolonged.
Wherein, preferably, the contact ball 4 is provided in a spherical shape.
The contact ball 4 is spherical, so that the contact area between the contact and the surface of the workpiece can be further increased, and the magnetization effect is improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a telescopic exchange yoke probe unit, includes shell (1) and yoke iron core (2), yoke iron core (2) set up on shell (1), its characterized in that still includes contact and telescopic machanism (3), the contact includes a plurality of contact balls (4), contact ball (4) through telescopic machanism (3) with shell (1) telescopic connection.
2. The telescopic ac magnetic yoke probe device of claim 1, wherein: the telescoping mechanism (3) comprises:
the movable block (31) is connected in the shell (1) in a sliding mode, and one end of the sliding block is connected with the contact ball (4);
the spring post (32) is arranged in the shell (1) and is connected with the other end of the movable block (31);
the telescopic spring (33) is sleeved on the spring column (32), one end of the spring is connected with the other end of the movable block (31), and the other end of the telescopic spring (33) is connected with the shell (1).
3. The telescopic ac magnetic yoke probe device of claim 1, wherein: the telescopic mechanisms (3) are distributed in the shell (1) in an array mode, and the plurality of telescopic mechanisms (3) are connected in a sliding mode.
4. The telescopic ac magnetic yoke probe device of claim 1, wherein: the housing (1) comprises: the telescopic mechanism comprises a movable joint (12) and a limiting sleeve (11), wherein the movable joint (12) is connected with the limiting sleeve (11), and the telescopic mechanism (3) is arranged in the limiting sleeve (11).
5. The telescopic ac magnetic yoke probe device of claim 4, wherein: the movable joint (12) comprises: the magnetic yoke comprises an upper joint (121) and a lower joint (122), wherein the upper joint (121) is rotatably connected with the lower joint (122), a limiting sleeve (11) is connected with the lower joint (122), and a magnetic yoke iron core (2) is connected with the upper joint (121).
6. The telescopic ac magnetic yoke probe device of claim 5, wherein: the upper joint (121) and the lower joint (122) are rotationally connected through a screw.
7. The telescopic ac magnetic yoke probe device of claim 5, wherein: the upper joint (121) is rotationally connected with the magnetic yoke iron core (2) through a screw rod.
8. The telescopic ac magnetic yoke probe device of claim 1, wherein: set up fixed establishment (5) on shell (1), fixed establishment (5) are including leading to groove (51) and groove tooth (52), it sets up on shell (1) lateral wall to lead to groove (51), groove tooth (52) with lead to groove (51) swing joint, groove tooth (52) compress tightly telescopic machanism (3).
9. The telescopic ac magnetic yoke probe device of claim 8, wherein: the through groove (51) is a threaded hole, the groove tooth (52) is a bolt, and the telescopic mechanism (3) is pressed tightly by screwing the bolt.
10. The telescopic ac magnetic yoke probe device of claim 1, wherein: the contact ball (4) is arranged in a spherical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823857.3A CN113655115A (en) | 2021-07-21 | 2021-07-21 | Telescopic alternating current magnetic yoke probe device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823857.3A CN113655115A (en) | 2021-07-21 | 2021-07-21 | Telescopic alternating current magnetic yoke probe device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113655115A true CN113655115A (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110823857.3A Pending CN113655115A (en) | 2021-07-21 | 2021-07-21 | Telescopic alternating current magnetic yoke probe device |
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| Country | Link |
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| CN (1) | CN113655115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116626150A (en) * | 2023-07-24 | 2023-08-22 | 中兴海陆工程有限公司 | Conformal contact magnetic conduction device for magnetic particle inspection machine |
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2021
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| CN116626150A (en) * | 2023-07-24 | 2023-08-22 | 中兴海陆工程有限公司 | Conformal contact magnetic conduction device for magnetic particle inspection machine |
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