CN2074455U - Magnetic-powder flaw-detector for circular parts - Google Patents
Magnetic-powder flaw-detector for circular parts Download PDFInfo
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- CN2074455U CN2074455U CN 90212242 CN90212242U CN2074455U CN 2074455 U CN2074455 U CN 2074455U CN 90212242 CN90212242 CN 90212242 CN 90212242 U CN90212242 U CN 90212242U CN 2074455 U CN2074455 U CN 2074455U
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- arm
- bronze medal
- iron core
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- annular element
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Abstract
The utility model relates to a magnetic-powder flaw-detector for circular parts. The utility model is used for detecting the cracks or the damage of the ferromagnetic circular parts. The flaw-detector has two electromagnetic systems which make the circular parts simultaneously obtain a circumferential magnetic field and an axial magnetic field. The electromagnetic system which generates the axial magnetic field is composed of an iron core which can be opened and closed and an exciting coil, wherein, the exciting coil is wound on the iron core, one straight arm of the iron core is positioned at the position of the center hole of the ring part, the straight arm is provided with a copper bar, and the copper bar and a transformer compose the electromagnetic system which makes the circular part generate the circumferential magnetic field. The copper bar is the current carrying conductor. Owing to the flaw-detector of the utility model, the circular parts have uniform magnetization and no blind zone. The cracks and the defects of circular parts can be conveniently detected.
Description
The utility model is a kind of magnetic powder flaw detector for ring parts, is used to detect the crackle or the damage of ferrimagnet annular workpieces, belongs to Non-Destructive Testing machinery.
The defectoscope of annular workpieces must have simultaneously to produce and makes the electromagnetic system that axial magnetic field and Circumferential field are arranged on the annular workpieces, makes annular element be subjected to axial, circumferential magnetization simultaneously under a kind of state and can detect the crackle or the damage of workpiece.Traditional circumferential magnetization is with wearing excellent method (Fig. 1), promptly pass workpiece circular hole center with the current (2) that links to each other with transformer (1), the magnetic field that utilizes current (2) to produce on every side makes annular element (3) obtain the circumferencial direction magnetic line of force (5) and detects crackle axial on the annular workpieces (4).Circumferential crack on the annular workpieces is generally surveyed (Fig. 2) with current-carrier solenoid, annular workpieces (3) places in the solenoid (6), solenoidal two ends, link to each other with transformer (9) output terminal by lead, the magnetic line of force (8) in the current-carrier solenoid makes workpiece (3) axial magnetized, thereby detects the circumferential crack or the defective (7) of workpiece (3).In sum as seen, use traditional method and be to make that annular workpieces obtains axially, circumferential magnetization under a kind of state, and detect the crackle of various positions and different shape or damage easily.And the magnetic field that these two kinds of modes produce is inhomogeneous, on annular workpieces, the detection blind area is arranged.How to make annular workpieces be in existing Circumferential field under a kind of state, axial magnetic field is arranged again, this is magnetic powder inspection one a big technical barrier.
Task of the present utility model provides a kind of annular workpieces that can make under same state, obtains the axial and circumferential magnetization simultaneously.The magnetization non-blind area, highly sensitive.Can once detect the crackle of any position, Any shape on the annular workpieces or the magnetic powder flaw detector for ring parts of damage.
The technical solution of the utility model is: two electromagnetic systems that defectoscope is put mechanism, spray system and made annular workpieces produce axial magnetic field and Circumferential field simultaneously by frame, annular element are formed.The electromagnetic system of axial magnetic field be by magnetizing coil (32) but and the iron core of folding constitute (Fig. 3), magnetizing coil is on iron core, iron core has a straight-arm at least, straight-arm is in the annular element central hole location, bronze medal is arranged on the straight-arm, bronze medal linked to each other with the transformer secondary output coil when iron core was closed, and bronze medal and transformer constitute makes annular element obtain the electromagnetic system of circumferential magnetization.Because straight-arm is in the annular element center pit, bronze medal promptly is to make annular element obtain the current of circumferential magnetization.
Magnetizing coil on the iron core is magnetic circuit with the iron core, because the straight-arm of iron core is in the annular center hole, induction has circumferential electric current and axial magnetic flux on the annular element, and the magnetic line of force is even, and annular element obtains axial magnetized.Simultaneously, bronze medal on the straight-arm makes annular element obtain circumferential magnetization as current, so annular element can obtain down the complexification magnetization of circumferential and axial in same state, where take up an official post to the crackle or the defective (60) of, Any shape thereby can detect annular element, finished the invention task.
But the iron core of folding has removable part and fixed part two partly to synthesize, and iron core has a straight-arm at least, and bronze medal is arranged on the straight-arm.Iron core can be by " ［ " shape and " | " shape two are partly synthetic, and " ［ " shape can be to move partly, is called transfer arm (31), and " | " shape is called fixed arm (33) as fixed part.The two also can be opposite.The straight-arm of iron core can be the top straight-arm of transfer arm (31).Magnetizing coil (32) is gone up (also can also can respectively use around a parallel connection) around fixed arm (33) on transfer arm (31) and fixed arm (33) on transfer arm (31).But the iron core of folding is exactly the magnetic circuit of magnetizing coil (32).It is the rest annular element that annular element is put mechanism's effect.And can regulate height, make the straight-arm of iron core be in center, annular element hole.Put mechanism and can be designed to height-adjustable pair of roller bearing mechanism, annular element is positioned on the support roller (37) of two axis of rolling.One of two roller bearings are main drive shaft, and another is a driven axle.Main drive shaft (36) is by the direct driven rotary of motor.Put mechanism by motor operate lifting mechanism levelling roller bearing height, be in center, annular element hole with the straight-arm that guarantees iron core.
Fig. 1 always uses the electromagnetic system that produces Circumferential field.
Fig. 2 is the electromagnetic system of the generation axial magnetic field always used.
Fig. 3 be of the present utility model make on the annular element produce axially, an embodiment of the electromagnetic system of Circumferential field.
Fig. 4 is a magnetic powder flaw detector for ring parts enforcement body.
Fig. 5 is that fixed arm is implemented structure.
Fig. 6 is an embodiment of fixed arm and transfer arm magnetic joint portion.
Fig. 7 is that transfer arm top straight-arm is in the end surface shape in conjunction with contact site.
Be described in detail the present invention below in conjunction with accompanying drawing:
It is by supporting-roller shaft that the left and right sides support (45) of the utility model magnetic powder flaw detector for ring parts, the annular element on (47) are put mechanism, and support roller (37) and drive motor (44) constitute (Fig. 4).Supporting-roller shaft has two of main drive shaft and driven axles, divide be located at before and after two sides.Main drive shaft (36) is by motor (44) driven rotary, and passive pedestal is on the bearing of left and right sides frame (47), (45).2 of support rollers are arranged on each root supporting-roller shaft, hold annular element (3) in the four-point supporting mode.Rest point is at the nearly biend place of annular element (3).Holder is defeated removable, can align the position of support roller (37) on supporting-roller shaft (43) according to the axial length of annular element (3), and during the rotation of driven by motor main drive shaft, support roller rotates, thereby drives annular element and driven axle rotation.Support roller (37) is an insulating part.Motor (44) can be a stepper motor.Left and right sides support is fixed on the support.Supporting-roller shaft (43) guarantees that by the level height of elevating mechanism (42) levelling supporting-roller shaft the top straight-arm of transfer arm (31) is in center, annular element hole.Elevating mechanism is driven by motor (46).(61) be spray system.
But the folding iron core is by siliconized plate be formed by stacking (Fig. 3).Transfer arm (31) is by " ［ " shape siliconized plate is formed by stacking layer by layer, and fixed arm (33) then is formed by stacking layer by layer by " | " shape siliconized plate.Iron core is a straight-flanked ring when closed.The top straight-arm of transfer arm (31) is in the annular element central hole location.Transfer arm (31) top straight-arm skin has copper bar (35), between copper bar and the siliconized plate insulation spacer is arranged.Be overlapped into " transfer arm of ［ " shape, use when superimposed " cross section of ［ " shape siliconized plate top straight-arm can be not contour.The stepped appearance (Fig. 7) that the xsect of the transfer arm after being overlapped into (31) top straight-arm is centrosymmetric.The bronze medal of extexine (35) can be a rectangular-bar copper, also can be crescent moon, arc shape bar copper coin.Also can there be bronze medal on fixed arm top, and two bronze medals are connected with two pile crowns of transformer (30) secondary coil respectively.Whole transfer arm (31) is fixed on the plate (41), and plate (41) moves the oriented parallel of iron core folding by actuator drives along directed guide rail.This gearing can be gear, mechanical transmission mechanism, also can gas or hydraulic gear, and (40) are cylinder, piston (Fig. 4).Copper bar on transfer arm (31) and the fixed arm (33) can be in a side surface, also can be in two side surface layers.
The fixed arm of iron core (33) can be fixed on the support vertically, and the support level direction can flexible bearing, to make the elastic deformation of iron core buffering and horizontal direction when closed.Fixed arm also can be suspended on the hinged support seat (39) of right support (45) vertically and go up (Fig. 5), the flexible cushion block in bottom (49) of frame (45), the rest fixed arm, with regulate and when guaranteeing that iron core is closed the contact of transfer arm (31) and fixed arm (33) good, do not have electric leakage, leakage field phenomenon.Magnetizing coil (32) is arranged at the bottom of fixed arm (33).Magnetizing coil can be located on the transfer arm (31), also can respectively establish magnetizing coil use in parallel at fixed arm (33) and transfer arm (31).Cushion (49) is the member that can make elastic deformation.
For making the iron core closure, transfer arm (31) and fixed arm (33) are when iron core engages, it is good that copper bar on two arms also contacts conducting, the copper bar on fixed arm (33) top is the horizontal direction that is in fixed arm (33) upper face, shape linearly when two bronze medals connected when iron core was closed, bronze medal on the fixed arm (34) has the mechanism (Fig. 6) that makes copper bar make the horizontal direction elastic displacement, displacement mechanism has bronze medal (34), orienting lug (52), bronze medal contiguous block (59), compression spring (51), distortion spring (50) is formed, when bronze medal is done the parallel displacement of horizontal direction to the right in orienting lug, by the bronze medal of contiguous block (59) connection two sides, bronze medal (34) is fixedlyed connected with distortion spring (50) again.The displacement of bronze medal transfers the distortion of distortion spring (59) to.The right part (58) of distortion spring (50) links to each other with the pile crown of the secondary coil of transformer (38).
The technical solution of the utility model can be in circumferential, the axial resultant field annular element, and magnetic field is even, and non-blind area is as the same to the biend of annular element, can detect the crackle or the damage of any position, Any shape on the annular element easily.It is the magnaflux of a practicality, novelty.
Claims (6)
1, a kind of magnetic powder flaw detector for ring parts, by frame, annular element is put mechanism, spray system and two electromagnetic systems that make the ferromagnetism annular element obtain axial magnetized and circumferential magnetization are formed, it is characterized in that the electromagnetic system that makes annular element obtain axial magnetized is but that iron core by magnetizing coil and folding constitutes, magnetizing coil is on iron core, iron core has a straight-arm at least, straight-arm is in the annular element central hole location, copper bar is arranged on the straight-arm, bronze medal linked to each other with the transformer secondary output coil when iron core was closed, and copper bar on the straight-arm and transformer constitute makes annular element obtain the electromagnetic system of circumferential magnetization.
2, the described magnetic powder flaw detector for ring parts of claim 1, but the iron core that it is characterized in that folding is synthetic by transfer arm (31) and fixed arm (33) two parts, transfer arm is " ［ " shape, fixed arm is " | " shape, close the rectangular ring in back, the straight-arm that is in the annular element center pit can be the top straight-arm of transfer arm (31).
3, by the described magnetic powder flaw detector for ring parts of claim 1, it is characterized in that bronze medal is arranged at fixed arm (33) top, bronze medal (35) when iron core is closed on the transfer arm (31) contacts conducting with the bronze medal (34) on the fixed arm (33), and two copper bars are connected with two pile crowns of secondary coil of transformer (38) respectively.
4, by the described magnetic powder flaw detector for ring parts of claim 1, it is characterized in that the bronze medal (35) on the transfer arm (31) is in transfer arm top straight-arm outer surface layer, between bronze medal (35) and the siliconized plate grommet is arranged.
5, by claim 1,2 described magnetic powder flaw detector for ring parts, the horizontal direction that it is characterized in that fixed arm (33) upper face, bronze medal on the fixed arm has the mechanism that makes bronze medal make the horizontal direction elastic displacement, elastic displacement mechanism is by bronze medal (34), orienting lug (52), bronze medal contiguous block (59), compression spring (51), distortion spring (50) is formed, bronze medal presses compression spring (51) by contiguous block (59), and bronze medal (34) is fixedlyed connected with distortion spring (50) again.
6,, it is characterized in that fixed arm is suspended on the hinged support seat (39) of support (45) by the described magnetic powder flaw detector for ring parts of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212242 CN2074455U (en) | 1990-05-17 | 1990-05-17 | Magnetic-powder flaw-detector for circular parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212242 CN2074455U (en) | 1990-05-17 | 1990-05-17 | Magnetic-powder flaw-detector for circular parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2074455U true CN2074455U (en) | 1991-04-03 |
Family
ID=4891817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212242 Withdrawn CN2074455U (en) | 1990-05-17 | 1990-05-17 | Magnetic-powder flaw-detector for circular parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2074455U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561419B (en) * | 2008-04-19 | 2012-05-23 | 王登 | Thick-wall inner hole magnetic particle inspection magnetizer |
| CN102914588A (en) * | 2012-11-13 | 2013-02-06 | 西安航空动力股份有限公司 | Magnetizing support and detection method for detection of longitudinal coil magnetization |
| CN103543197A (en) * | 2013-10-10 | 2014-01-29 | 厉伟 | Method and device for magnetic powder inspection on annular workpiece |
| CN104237373A (en) * | 2012-11-13 | 2014-12-24 | 西安航空动力股份有限公司 | Method for increasing actual length-diameter ratio of diffuser casing support plate in longitudinal magnetization |
| CN106404895A (en) * | 2016-08-31 | 2017-02-15 | 南京迪威尔高端制造股份有限公司 | Method for determining excitation magnetizing coil turns of magnetic particle inspection |
| CN108088896A (en) * | 2017-11-01 | 2018-05-29 | 中车长江铜陵车辆有限公司 | A kind of drawbar coupler platform inboard root fatigue crack detection device |
| CN115469005A (en) * | 2021-12-13 | 2022-12-13 | 北京聚龙科技发展有限公司 | Magnetic particle flaw detector special for train coupler body |
-
1990
- 1990-05-17 CN CN 90212242 patent/CN2074455U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561419B (en) * | 2008-04-19 | 2012-05-23 | 王登 | Thick-wall inner hole magnetic particle inspection magnetizer |
| CN102914588A (en) * | 2012-11-13 | 2013-02-06 | 西安航空动力股份有限公司 | Magnetizing support and detection method for detection of longitudinal coil magnetization |
| CN104237373A (en) * | 2012-11-13 | 2014-12-24 | 西安航空动力股份有限公司 | Method for increasing actual length-diameter ratio of diffuser casing support plate in longitudinal magnetization |
| CN104237373B (en) * | 2012-11-13 | 2016-12-21 | 西安航空动力股份有限公司 | A kind of method extending the diffusion actual draw ratio of casing support plate in longitudinal magnetization |
| CN103543197A (en) * | 2013-10-10 | 2014-01-29 | 厉伟 | Method and device for magnetic powder inspection on annular workpiece |
| CN103543197B (en) * | 2013-10-10 | 2017-07-28 | 厉伟 | The method and its device of a kind of magnetic powder inspection on annular workpiece |
| CN106404895A (en) * | 2016-08-31 | 2017-02-15 | 南京迪威尔高端制造股份有限公司 | Method for determining excitation magnetizing coil turns of magnetic particle inspection |
| CN108088896A (en) * | 2017-11-01 | 2018-05-29 | 中车长江铜陵车辆有限公司 | A kind of drawbar coupler platform inboard root fatigue crack detection device |
| CN115469005A (en) * | 2021-12-13 | 2022-12-13 | 北京聚龙科技发展有限公司 | Magnetic particle flaw detector special for train coupler body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: TONG SHUNCHANG SUN JINLOU TONG SHUOMING TO: ZHOU SHUNCHANG SUN JINLOU TONGSHUOMING |
|
| CU01 | Correction of utility model patent |
Correction item: Designer Correct: Zhou Shunchang|Sun Jinlou|Tong Shuoming False: Tong Shunchang|Sun Jinlou|Tong Shuoming Page: The title page |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Designer Correct: Zhou Shunchang|Sun Jinlou|Tong Shuoming False: Tong Shunchang|Sun Jinlou|Tong Shuoming Number: 14 Page: 125 Volume: 7 |
|
| ERR | Gazette correction |
Free format text: CORRECT: DESIGNER; FROM: TONG SHUNCHANG SUN JINLOU TONG SHUOMING TO: ZHOU SHUNCHANG SUN JINLOU TONGSHUOMING |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |