CN106066363A - A kind of railroad turnout steel rail eddy current conformal detection device - Google Patents
A kind of railroad turnout steel rail eddy current conformal detection device Download PDFInfo
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- CN106066363A CN106066363A CN201610608220.1A CN201610608220A CN106066363A CN 106066363 A CN106066363 A CN 106066363A CN 201610608220 A CN201610608220 A CN 201610608220A CN 106066363 A CN106066363 A CN 106066363A
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- eddy current
- steel rail
- detection
- railroad turnout
- turnout steel
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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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
- G01N27/902—Arrangements for scanning by moving the sensors
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- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
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- 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 application provides a kind of railroad turnout steel rail eddy current type conformal detection device, and including fixed support platform (1) and eddy current testing device (2), eddy current testing device (2) is arranged in fixed support platform (1).Described fixed support platform (1) includes fixed block (11) and fixing bar (111), and wherein, fixing bar (111) connects adjacent fixed block (11).By the railroad turnout steel rail eddy current conformal detection device of the present invention, it is adapted to railroad turnout steel rail continuous print variable cross-section, the detection range of regulation detection coil, makes the detection faces of eddy current probe be consistently detected the light band portion on railroad turnout steel rail surface.And it is suitable for the shape face of railroad turnout steel rail, the particularly cambered surface at gauge angle, reduce Lift-off effect and edge effect that EDDY CURRENT produces.
Description
Technical field
The present invention relates to railway detection process field, especially a kind of railroad turnout steel rail eddy current conformal detection device.
Background technology
EDDY CURRENT is built upon a kind of lossless detection method on electromagnetic induction principle basis, it is adaptable to conduction material
Material.When conductor is placed among alternating magnetic field, faradic current will be had in conductor to produce, this electric current is referred to as eddy current.Due to conductor
The change of self various factors (such as electrical conductivity, pcrmeability, shape, size and defect etc.), can cause faradic change, profit
Sentence by this phenomenon and know conductor nature, state and have flawless detection method
EDDY CURRENT is a kind of conventional lossless detection method based on studying the eddy current mutual relation with measured workpiece.
Thin test specimen or the thick surface of test specimen, near surface position can only be checked owing to there is Kelvin effect, but inner deep cannot be detected and lack
Fall into, the most i.e. have the ferromagnetic material of magnetic screening action；
The advantage of eddy detection technology is that detection speed is fast, and coil can be not directly contacted with test specimen, it is not necessary to couplant, but whirlpool
Stream detection is confined to conductive material, can only detect surface and the defect on sub-surface, and be difficult to check to complex-shaped test specimen
Deng；
In prior art, the detection method such as eddy current, infiltration and magnetic powder belongs to conventional lossless detection method, can be used in table
The detection of planar defect.EDDY CURRENT based on electromagnetic induction principle, belongs to one of five big conventional lossless detection methods, non-during detection connects
Touching, need not couplant, detection speed is fast.Liquid penetrant testing can only detect the surface defect of opening.Liquid penetrant testing and Magnetic testing
There is pollution, and detection efficiency all ratios are relatively low, need certain illumination condition.The detection of railroad turnout steel rail can only be at skylight point, night
Between operation, be pressed for time, suitably use eddy detection technology.
In field of rail detection, railway switch structure is complicated, including stock rail, tongue, wing rail, guard rail and heart rail.High
Conventional movable head track switch on ferrum, rail head tread is variable cross-section through slicing, will realize continuous scanning highly difficult.Current in-service track switch
Rail Surface is not detected a flaw, only by eye-observation.Track switch is weak link, is not found if any surface defect, will be to railway security
Operation hides some dangers for.Current eddy detection technology cannot adapt to the cross section of railroad turnout steel rail change, it is impossible to realizes continuous scanning.
Summary of the invention
For overcoming existing defect, the present invention proposes a kind of railroad turnout steel rail eddy current conformal detection device.
A kind of railroad turnout steel rail eddy current conformal detection device, including fixed support platform and eddy current testing device, EDDY CURRENT fills
Install and be placed in fixed support platform.
Further, described fixed support platform includes fixed block and fixing bar, and wherein, fixing bar connects adjacent fixed block.
Further, sliding shoe is arranged on the fixing bar that adjacent fixed block is connected, and the location bar that slides connects adjacent
Sliding shoe.
Further, the fixing bar that fixed block both sides are connected can rotate with fixed block for axle point.
Preferably, described fixed block, fixing bar are multiple, sliding shoe and slip location bar is multiple.
Described eddy current testing device includes belt, flat thin magnet and detection coil, wear-resistant block.Wherein, flat thin magnet is arranged at skin
Band both sides, detection coil is arranged on belt, and the aspect ratio detection coil of wear-resistant block is slightly higher, and its effect is to prevent from detecting coil quilt
Abrasion.
Preferably, described detection coil is multiple.
By the railroad turnout steel rail eddy current conformal detection device of the present invention, it is adapted to railroad turnout steel rail continuous print variable cross-section, adjusts
The detection range of joint detection coil, makes the detection faces of eddy current probe be consistently detected the light band portion on railroad turnout steel rail surface；
Belt-type eddy current probe is flexible, elastic design, makes detection coil and detection faces good fit, is suitable for track switch steel
Cambered surface at the shape face of rail, particularly gauge angle, reduces Lift-off effect and edge effect that EDDY CURRENT produces.
Meanwhile, using multichannel technology, scanning detection effective range is big, and detection efficiency is high.
Accompanying drawing explanation
Fig. 1 is railroad turnout steel rail eddy current conformal structure of the detecting device figure.
Fig. 2 is eddy current testing device structure chart in railroad turnout steel rail eddy current conformal detection device.
Fig. 3 is that railroad turnout steel rail eddy current conformal detection device uses state diagram.
Detailed description of the invention
A kind of railroad turnout steel rail eddy current conformal detection device provided the present invention with specific embodiment below in conjunction with the accompanying drawings enters
Row describes in detail.
Fig. 1 illustrates a kind of railroad turnout steel rail eddy current conformal detection device, including fixed support platform 1 and eddy current testing device 2, whirlpool
Flow detection device 2 is arranged in fixed support platform 1.
Described fixed support platform 1 includes fixed block 11 and fixing bar 111, and wherein, fixing bar 111 connects adjacent fixed block
11。
Sliding shoe 12 is arranged on the fixing bar 111 that adjacent fixed block 11 is connected, and the location bar 121 that slides connects adjacent
Sliding shoe 12.
The fixing bar 111 that fixed block 11 both sides are connected can rotate with fixed block 11 for axle point.
Described fixed block 11, fixing bar 111 be multiple, sliding shoe 12 and the location bar 121 that slides is multiple.
Fig. 2 illustrates, eddy current testing device 2 includes belt 21, flat thin magnet 22, detection coil 23 and wear-resistant block 24, wherein, magnetic
Iron plate 22 is arranged at belt 21 both sides, and detection coil 23 and wear-resistant block 24 are arranged on belt 21.
Wherein, detection coil 23 is multiple.
In concrete application, as it is shown on figure 3, railroad turnout steel rail eddy current conformal detection device is by 8 groups of detection 23, two belts of coil
21 and fixed support platform 1 form.The location bar 121 that slides by regulation fixed support platform moves the position of detection coil 23, changes
Become the effective range of EDDY CURRENT covering to adapt to the cross section of railroad turnout steel rail 3 change.After the location bar 121 that slides regulates position,
One end can be locked, it is to avoid the location bar 121 that slides slidably reciprocates, and affects Detection results.
Being detected as 8 passages, port number suitably can be increased or decreased according to the effective range of detection.Pacify on one belt
Filling four groups of detection coils 23, longitudinal arrangement, at rail head tread working edge, detects rail head tread working edge；Also pacify on another belt
Fill four groups of detection coils 23, detect rail head lateral parts 31.The effective range that detection area coverage can detect according to specific needs
It is adjusted.
Four groups of detection coils 23 are embedded, in order to make belt and rail have at cambered surface, as gauge Angle Position is fitted on belt
More preferably, in the both sides of belt equipped with thin flat thin magnet, there is slight suction, it is possible to absorption is on rail.
Often group detection coil 23 can be made up of unicoil, it is possible to uses twin coil.Difference or absolute type connection side can be used
Formula, it is ensured that probe can suppress the Lift-off effect caused due to Rail Surface irregularity, extracts effective flaw indication.
8 groups of detection coils connect the eddy detecting instrument of at least 8 passages.Eddy detecting instrument produces sinusoidal signal excitation 8
Group detection coil, and carried out the process of data, analysis by the signal feeding eddy detecting instrument of 8 groups of coil pickup detections, and will
Detection data carry out imaging, show in real time.A whole set of detection device is mountable on EDDY CURRENT dolly, pushes away in orbit
OK.
8 groups of detection coils can increase to 16 groups or more, or is reduced to 4 groups, and concrete port number can detect model as required
Enclose and determine.
Belt also can replace with other flexible materials.On belt embed detection coil number port number as required and
Detection range changes.
Heretofore described method of probe design, the effective range of scalable detection, adapt to heretofore described road
Trouble rail variable cross-section.
Belt-type eddy current probe is flexible, and adding thin flat thin magnet can fit well with rail in both sides, adapts to railroad turnout steel rail
Shape face, the particularly cambered surface at gauge angle, reduce EDDY CURRENT produce Lift-off effect and edge effect.
By the railroad turnout steel rail eddy current conformal detection device of the present invention, the position of its scalable detection coil regulates eddy current
The effective range of detection, adapts to the change of railroad turnout steel rail detection position, it is possible to achieve the continuous scanning of rail variable cross-section.
Its detection method is noncontact, it is not necessary to couplant, and the speed of detection is fast, and efficiency is high.
, designed by belt-type flexibility meanwhile, be suitable for the shape face of railroad turnout steel rail, reduce Lift-off effect and edge effect,
Improve the signal to noise ratio of detection.
Finally it should be noted that above example is only in order to describe technical scheme rather than to this technical method
Limiting, the present invention can extend to other amendment in application, change, applies and embodiment, and it is taken as that institute
Have such amendment, change, apply, embodiment is all in the range of the spirit or teaching of the present invention.
Claims (10)
1. a railroad turnout steel rail eddy current conformal detection device, including fixed support platform (1) and eddy current testing device (2), its feature
Being, eddy current testing device (2) is arranged in fixed support platform (1).
Railroad turnout steel rail eddy current the most according to claim 1 conformal detection device, it is characterised in that described fixed support platform
(1) including fixed block (11) and fixing bar (111), wherein, fixing bar (111) connects adjacent fixed block (11).
Railroad turnout steel rail eddy current the most according to claim 2 conformal detection device, it is characterised in that sliding shoe (12) is arranged at
On the fixing bar (111) that adjacent fixed block (11) is connected, location bar (121) of sliding connects adjacent sliding shoe (12).
Railroad turnout steel rail eddy current the most according to claim 3 conformal detection device, it is characterised in that fixed block (11) both sides institute
The fixing bar (111) connected can be that axle point rotates with fixed block (11).
5. according to the railroad turnout steel rail eddy current conformal detection device described in claim 2,3 or 4, it is characterised in that described fixed block
(11), fixing bar (111) is multiple, sliding shoe (12) and slides that to position bar (121) be multiple.
Railroad turnout steel rail eddy current the most according to claim 1 conformal detection device, it is characterised in that described eddy current testing device
(2) including belt (21), flat thin magnet (22) and detection coil (23) and wear-resistant block (24), wherein, flat thin magnet (22) is arranged at skin
Band (21) both sides, detection coil (23) and wear-resistant block (24) are arranged on belt (21).
Railroad turnout steel rail eddy current the most according to claim 1 conformal detection device, it is characterised in that described detection coil (23)
For multiple.
The detection method of a kind of railroad turnout steel rail eddy current the most according to claim 1 conformal detection device, it is characterised in that inspection
Survey device to be made up of two eddy current testing devices (2) and two fixed support platforms (1), wherein, each eddy current testing device (2)
On 4 groups of detections coil (23) are set, the position of slip location bar (121) mobile detection coil (23) of regulation fixed support platform,
Change the effective range of EDDY CURRENT covering to adapt to the cross section that railroad turnout steel rail (3) changes；Slip location bar (121) regulates position
Put and lock.
The detection method of railroad turnout steel rail eddy current the most according to claim 8 conformal detection device a, it is characterised in that whirlpool
Flow detection device (2) is horizontally arranged in rail head tread working edge, detects rail head tread working edge；Another eddy current testing device
(2) detection rail head lateral parts 31.
The detection method of railroad turnout steel rail eddy current the most according to claim 8 conformal detection device, it is characterised in that detection
Coil (23) quantity detection range as required is increased or decreased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608220.1A CN106066363B (en) | 2016-07-28 | 2016-07-28 | Switch rail vortex shape detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608220.1A CN106066363B (en) | 2016-07-28 | 2016-07-28 | Switch rail vortex shape detection device |
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| Publication Number | Publication Date |
|---|---|
| CN106066363A true CN106066363A (en) | 2016-11-02 |
| CN106066363B CN106066363B (en) | 2023-04-28 |
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ID=57207184
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610608220.1A Active CN106066363B (en) | 2016-07-28 | 2016-07-28 | Switch rail vortex shape detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407847A (en) * | 2018-05-10 | 2018-08-17 | 南京航空航天大学 | A kind of device of Rail Surface flaw detection signal acquisition |
| CN108680640A (en) * | 2018-06-19 | 2018-10-19 | 南京航空航天大学 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
| CN109342556A (en) * | 2018-12-12 | 2019-02-15 | 爱德森（厦门）电子有限公司 | A kind of turnout rail bottom edge chink is from conformal eddy current testing device and method |
| CN110609080A (en) * | 2019-10-30 | 2019-12-24 | 爱德森（厦门）电子有限公司 | Turnout longitudinal defect eddy current detection device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407847A (en) * | 2018-05-10 | 2018-08-17 | 南京航空航天大学 | A kind of device of Rail Surface flaw detection signal acquisition |
| CN108680640A (en) * | 2018-06-19 | 2018-10-19 | 南京航空航天大学 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
| CN109342556A (en) * | 2018-12-12 | 2019-02-15 | 爱德森（厦门）电子有限公司 | A kind of turnout rail bottom edge chink is from conformal eddy current testing device and method |
| CN109342556B (en) * | 2018-12-12 | 2022-04-22 | 爱德森（厦门）电子有限公司 | Turnout rail bottom edge angle crack self-adaptive eddy current detection device and method |
| CN110609080A (en) * | 2019-10-30 | 2019-12-24 | 爱德森（厦门）电子有限公司 | Turnout longitudinal defect eddy current detection device and method |
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|---|---|
| CN106066363B (en) | 2023-04-28 |
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