CN203786082U - Flexible crossed magnet yoke - Google Patents
Flexible crossed magnet yoke Download PDFInfo
- Publication number
- CN203786082U CN203786082U CN201420138462.5U CN201420138462U CN203786082U CN 203786082 U CN203786082 U CN 203786082U CN 201420138462 U CN201420138462 U CN 201420138462U CN 203786082 U CN203786082 U CN 203786082U
- Authority
- CN
- China
- Prior art keywords
- open slot
- iron core
- crossed
- magnet yoke
- shed groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000013011 mating Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 7
- 239000006247 magnetic powder Substances 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009401 outcrossing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a flexible crossed magnet yoke. The flexible crossed magnet yoke comprises a U-shaped first magnet yoke iron core and a second magnet yoke iron core vertically crossed with the first magnet yoke iron core, wherein a rectangular lower open slot is formed in the lower part of the first magnet yoke iron core; a rectangular upper open slot matched with the lower open slot is formed in the upper part of the second magnet yoke iron core; the lower open slot is crossed with the upper open slot; penetrating holes are formed in both the upper open slot and the lower open slot; a spring gasket is arranged between the upper open slot and the lower open slot; the upper open slot, the lower open slot and the spring gasket are connected and positioned by virtue of a bolt. The crossed magnet yoke disclosed by the utility model adopts two yoke-shaped electromagnet cores to carry out space crossing at an included angle of 90 degrees, wherein crossed points are flexibly connected by a mode of combining the bolt with the spring gasket; after being electrified, spring connecting gaskets of two magnet yokes generate a certain deformation due to action of magnetic force, so that four magnetic electrodes of the crossed magnet yoke can sufficiently and effectively contact with a workpiece surface, and therefore, enough and uniform magnetic fields are generated in the workpiece to satisfy magnetic powder flaw-inspection needs.
Description
Technical field
The utility model relates to a kind of magnetic powder inspection crossed yoke.
Technical background
Magnetic powder inspection crossed yoke is to carry out crossing on the same level or space crossed (the middle welding manner that adopts is fixed) by two yoke shape electromagnetic cores with 90 ° of angles, be wrapped with respectively coil at diagonal angle, and produce the failure detector of rotating magnetic field with the alternating current driver of two outs of phase.Be divided into space crossed yoke and plane crossed yoke.
Square being inversely proportional to of magnetic field that crossed yoke produces in workpiece size and magnetic pole gap (distance of magnetic pole and surface of the work), with magnetic pole gap increase and sharply reduce, that is: magnetic pole gap is larger, can penetrate magnetic field in workpiece less.Can magnetic pole effectively be contacted with workpiece, and can the gap of pole pitch surface of the work be the basic factor that determines produce in workpiece the magnetic field of sufficient intensity.Four magnetic poles that rough surface of the work, erose surface of the work are difficult to allow conventional rigid connect crossed yoke are all effectively contacted with surface of the work, certain is obviously less with the magnetic field that the magnetic pole that surface of the work is difficult to effectively to contact is responded in workpiece, cause crossed yoke can not in workpiece, produce enough, uniform magnetic field, be difficult to magnetic powder inspection work.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to use crossed yoke that flexibly connects, and it can produce enough, magnetic field uniformly in workpiece, meets the needs of magnetic powder inspection.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of flexible crossed yoke, its gordian technique is: it comprises the first U-shaped yoke iron core and the second yoke iron core with the first yoke iron core square crossing, described the first yoke mandrel lower is provided with the under shed groove of rectangle, the top of described the second yoke iron core is provided with the upper shed groove of the rectangle mating with under shed groove, described under shed groove and upper shed groove intersect, on described upper shed groove and under shed groove, be equipped with via hole, between described upper shed groove and under shed groove, be provided with spring washer, described upper shed groove, under shed groove and spring washer connect location by bolt.
Described under shed groove and upper shed groove depth are respectively 1/2 of the first yoke iron core, the second yoke iron core thickness.
The beneficial effect that adopts technique scheme to produce is: this novel crossed yoke adopts two yoke shape electromagnetic cores to carry out space crossed with 90 ° of angles, the mode that its point of crossing adopts bolt to add spring washer flexibly connects, after energising due to the effect of magnetic force, there is certain distortion in the spring connection gasket sector-meeting of two yokes, 4 magnetic poles of crossed yoke all can fully effectively be contacted with surface of the work, in workpiece, produce enough, uniform magnetic field, meet the needs of magnetic powder inspection.
Brief description of the drawings
Fig. 1 is the schematic diagram of the first yoke iron core;
Fig. 2 is the schematic diagram of the second yoke iron core;
Fig. 3 is this novel schematic diagram;
Wherein, 1, the first yoke iron core; 2, via hole; 3, under shed groove; 4, the second yoke iron core; 5, upper shed groove; 6, bolt.
Embodiment
?below in conjunction with accompanying drawing, the utility model is further detailed.
Referring to accompanying drawing 1-accompanying drawing 3, the utility model comprises the first U-shaped yoke iron core 1 and the second yoke iron core 4 with the first yoke iron core 1 square crossing, described the first yoke iron core 1 bottom is provided with the under shed groove 3 of rectangle, the top of described the second yoke iron core 4 is provided with the upper shed groove 5 of the rectangle mating with under shed groove 3, described under shed groove 3 and upper shed groove 5 are arranged in a crossed manner, described under shed groove 3 is positioned at the top of upper shed groove 5, under shed groove 3 and upper shed groove 5 part juxtapositions, on described upper shed groove 5 and under shed groove 3, be equipped with via hole 2, between described upper shed groove 5 and under shed groove 3, be provided with spring washer, described upper shed groove 5, under shed groove 3 and spring washer connect location by bolt 6.
Described under shed groove 3 and upper shed groove 5 degree of depth are respectively 1/2 of the first yoke iron core 1, the second yoke iron core 4 thickness, and this thickness refers to the thickness of the horizontal sides (yoke center section) of the first yoke iron core 1, the second yoke iron core 4 at its place.Processing circle via hole in the middle of groove, two yoke iron cores are 90 ° of intersections to be fixed, the middle spring washer of placing, both sides are fixed with bolt, and composition one flexibly connects crossed yoke.
After energising, under the effect of magnetic force between magnetic pole and workpiece, four magnetic poles all can effectively contact with surface of the work by the distortion of junction spring washer, avoid conventional rigid crossed yoke can not effectively contact with surface of the work the phenomenon of the magnetic field intensity deficiency producing because of certain magnetic pole.Flexibly connect crossed yoke and can allow four magnetic poles all effectively contact with surface of the work, can in workpiece, produce enough, uniform magnetic field, meet magnetic powder inspection need of work.
Claims (2)
1. a flexible crossed yoke, it is characterized in that: it comprises the first U-shaped yoke iron core (1) and the second yoke iron core (4) with the first yoke iron core (1) square crossing, described the first yoke iron core (1) bottom is provided with the under shed groove (3) of rectangle, the top of described the second yoke iron core (4) is provided with the upper shed groove (5) of the rectangle mating with under shed groove (3), described under shed groove (3) and upper shed groove (5) intersect, on described upper shed groove (5) and under shed groove (3), be equipped with via hole (2), between described upper shed groove (5) and under shed groove (3), be provided with spring washer, described upper shed groove (5), under shed groove (3) and spring washer connect location by bolt (6).
2. flexible crossed yoke according to claim 1, is characterized in that: described under shed groove (3) and upper shed groove (5) degree of depth are respectively 1/2 of the first yoke iron core (1), the second yoke iron core (4) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138462.5U CN203786082U (en) | 2014-03-26 | 2014-03-26 | Flexible crossed magnet yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138462.5U CN203786082U (en) | 2014-03-26 | 2014-03-26 | Flexible crossed magnet yoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786082U true CN203786082U (en) | 2014-08-20 |
Family
ID=51322258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138462.5U Expired - Fee Related CN203786082U (en) | 2014-03-26 | 2014-03-26 | Flexible crossed magnet yoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786082U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655718A (en) * | 2014-12-30 | 2015-05-27 | 河南省锅炉压力容器安全检测研究院 | Electromagnetic inspection method based on hall sensor array and electromagnetic inspection system based on hall sensor array |
| CN108918656A (en) * | 2018-09-07 | 2018-11-30 | 中国电建集团山东电力建设第工程有限公司 | A kind of T-type welding point detection intersection electromagnetic yoke |
| CN109459487A (en) * | 2018-12-19 | 2019-03-12 | 中国特种设备检测研究院 | A kind of adaptive excitation unit |
| JP2019211292A (en) * | 2018-06-01 | 2019-12-12 | 富士電機株式会社 | Device for evaluating surface stress and/or hardness of magnetic substance |
| WO2020047849A1 (en) * | 2018-09-07 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Cross electromagnetic yoke for detecting t-shaped welding joint |
| CN111554472A (en) * | 2020-05-26 | 2020-08-18 | 台达电子企业管理（上海）有限公司 | Filter inductance and vehicle-mounted charger |
-
2014
- 2014-03-26 CN CN201420138462.5U patent/CN203786082U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655718A (en) * | 2014-12-30 | 2015-05-27 | 河南省锅炉压力容器安全检测研究院 | Electromagnetic inspection method based on hall sensor array and electromagnetic inspection system based on hall sensor array |
| CN104655718B (en) * | 2014-12-30 | 2017-09-22 | 河南省锅炉压力容器安全检测研究院 | A kind of electromagnetic test method and system based on Hall sensor array |
| JP2019211292A (en) * | 2018-06-01 | 2019-12-12 | 富士電機株式会社 | Device for evaluating surface stress and/or hardness of magnetic substance |
| CN108918656A (en) * | 2018-09-07 | 2018-11-30 | 中国电建集团山东电力建设第工程有限公司 | A kind of T-type welding point detection intersection electromagnetic yoke |
| WO2020047849A1 (en) * | 2018-09-07 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Cross electromagnetic yoke for detecting t-shaped welding joint |
| CN108918656B (en) * | 2018-09-07 | 2023-08-29 | 中国电建集团山东电力建设第一工程有限公司 | Cross electromagnetic yoke for detecting T-shaped welding joint |
| CN109459487A (en) * | 2018-12-19 | 2019-03-12 | 中国特种设备检测研究院 | A kind of adaptive excitation unit |
| CN109459487B (en) * | 2018-12-19 | 2024-04-05 | 中国特种设备检测研究院 | Self-adaptive excitation device |
| CN111554472A (en) * | 2020-05-26 | 2020-08-18 | 台达电子企业管理（上海）有限公司 | Filter inductance and vehicle-mounted charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20160326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |