CN103235033B - A kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue - Google Patents
A kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue Download PDFInfo
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- CN103235033B CN103235033B CN201310151911.XA CN201310151911A CN103235033B CN 103235033 B CN103235033 B CN 103235033B CN 201310151911 A CN201310151911 A CN 201310151911A CN 103235033 B CN103235033 B CN 103235033B
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Abstract
The invention discloses a kind of Card-type electromagnetic sensor and the detection method that detect in-service point tongue, sensor comprises resilient nonmetallic thin slice, two magnet thin slices, multiple magnetic test coil, based on electromagnetic nondestructive principle, the vertical side adopting card form electromagnetic detection sensor to directly against tongue detects, not only can detect the section crack bottom tongue, and the height of section crack can be detected, the order of severity of section crack is assessed with this, without the need to moving point tongue in testing process, method is simple, efficiency is high, testing cost is lower, be applicable to the quick testing of in-service point tongue original position.
Description
Art
The present invention relates to a kind of lossless detection method and device, particularly relate to a kind of Card-type electromagnetic sensor and the detection method that detect in-service point tongue.
Background technology
The feature of railway switch tongue is that section width narrows gradually; pressure is uneven; the narrower pressure of section width is larger; fatigue fracture crackle is very easily there is when point tongue is in-service; section crack is there is in usual meeting from bottom tongue vertical side; as found not in time, section crack upwards expands further, tongue may occur and to rupture the serious accident that the train was derailed.At present the ultrasonic detection method that adopts carries out manual detection more, because the gap when vertical side of tongue and backbone close only has about 1mm, and cannot direct-detection, need to move tongue or detect from the arcuate flanks of tongue, detection difficulty is comparatively large, and efficiency is lower, also easily occurs the situation that defect is undetected.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, a kind of Card-type electromagnetic sensor and the detection method that detect in-service point tongue are provided, this design is based on electromagnetic nondestructive principle, the vertical side adopting card form electromagnetic detection sensor to directly against tongue detects, not only can detect the section crack of tongue, and the height of section crack can be detected, the order of severity of section crack is assessed with this, without the need to moving point tongue in testing process, method is simple, efficiency is high, testing cost is lower, realize the quick detection of in-service point tongue original position.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Card-type electromagnetic sensor detecting in-service point tongue, and sensor comprises resilient nonmetallic thin slice, multiple magnetic test coil, two magnet thin slices.Described multiple magnetic test coil embeds and is fixed in resilient nonmetallic thin slice, wherein every two magnetic test coils are transversely arranged, anti-phase connects to form a differential detection coil groups, multiple differential detection coil groups longitudinal arrangement, differential detection coil groups is highly sensitive to sudden change wounds such as section cracks, multiple differential detection coil groups of longitudinal arrangement can detect the height of section crack, assess the order of severity of section crack defect with this; Described two magnet thin slices embed in the detection faces of the resilient nonmetallic thin slice being fixed on differential detection coil groups both sides respectively, magnet thin slice can make card form electromagnetic detection sensor be close in tongue vertical side to move, decrease lift-off and rock produced undesired signal.The thickness of described resilient nonmetallic thin slice is less than gap when point tongue and backbone close.
A kind of in-service point tongue detection method utilizing Card-type electromagnetic sensor, Card-type electromagnetic sensor is connected with electromagnetic detection instrument by cable, the vertical side that Card-type electromagnetic sensor is attached to point tongue by testing staff at the uniform velocity moves scanning, when having section crack defect bottom the vertical side of point tongue, crack defect signal is sent in electromagnetic detection instrument and shows and output of reporting to the police by the differential detection coil groups that sensing range covers section crack defect, in Card-type electromagnetic sensor, longitudinal arrangement multiple differential detection coil groups, the differential detection coil groups that sensing range does not cover section crack defect does not have flaw indication to be sent to electromagnetic detection instrument, the height of section crack defect can be calculated with this, assess its order of severity.
The invention has the beneficial effects as follows, a kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue, based on electromagnetic nondestructive principle, the vertical side adopting card form electromagnetic detection sensor to directly against tongue detects, not only can detect the section crack bottom tongue, and the height of section crack can be detected, the order of severity of section crack is assessed with this, without the need to moving point tongue in testing process, method is simple, efficiency is high, and testing cost is lower, is applicable to the quick testing of in-service point tongue original position.
Below in conjunction with embodiment, the present invention is described in further detail, but of the present invention a kind of detect in-service point tongue Card-type electromagnetic sensor and detection method be not limited to embodiment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the sensor schematic diagram of the embodiment of the present invention.
Fig. 2 is that the point tongue of the embodiment of the present invention detects schematic three dimensional views.
Fig. 3 is the point tongue bottom section crack detection schematic diagram of the embodiment of the present invention.
In figure, 1. resilient nonmetallic thin slice, 2. magnetic test coil, 3. magnet thin slice, 4. differential detection coil groups, 5. point tongue, 6. backbone, 7. tongue bottom section crack defect.
Embodiment
In embodiment shown in Fig. 1, a kind of Card-type electromagnetic sensor detecting in-service point tongue, sensor comprises resilient nonmetallic thin slice 1, multiple magnetic test coil 2, two magnet thin slices 3.Described multiple magnetic test coil 2 embeds and is fixed in resilient nonmetallic thin slice 1, and wherein every two magnetic test coils 2 are transversely arranged, anti-phase connects to form a differential detection coil groups 4, multiple differential detection coil groups 4 longitudinal arrangement; Described two magnet thin slices 3 embed in the detection faces of the resilient nonmetallic thin slice 1 being fixed on differential detection coil groups 4 both sides respectively.The thickness of described resilient nonmetallic thin slice 1 is less than gap when point tongue 5 closes with backbone 6.
Fig. 2, in detection embodiment shown in Fig. 3, a kind of in-service point tongue detection method utilizing Card-type electromagnetic sensor, Card-type electromagnetic sensor is connected with electromagnetic detection instrument by cable, the vertical side that Card-type electromagnetic sensor is attached to point tongue 5 by testing staff at the uniform velocity moves scanning, when having section crack defect 7 bottom the vertical side of point tongue 5, crack defect signal is sent in electromagnetic detection instrument and shows and output of reporting to the police by the differential detection coil groups 4 that sensing range covers section crack defect 7, in Card-type electromagnetic sensor, longitudinal arrangement multiple differential detection coil groups 4, the differential detection coil groups 4 that sensing range does not cover section crack defect 7 does not have flaw indication to be sent to electromagnetic detection instrument, the height of section crack defect can be calculated with this, assess its order of severity.
Above-described embodiment is only used for further illustrating a kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue of the present invention; but invention is not limited to embodiment; every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all fall in the protection domain of technical solution of the present invention.
Claims (3)
1. one kind is detected the Card-type electromagnetic sensor of in-service point tongue, sensor comprises resilient nonmetallic thin slice, multiple magnetic test coil, two magnet thin slices, it is characterized in that: described multiple magnetic test coil embeds and is fixed in resilient nonmetallic thin slice, wherein every two magnetic test coils are transversely arranged, anti-phase connects to form a differential detection coil groups, multiple differential detection coil groups longitudinal arrangement; Described two magnet thin slices embed in the detection faces of the resilient nonmetallic thin slice being fixed on differential detection coil groups both sides respectively.
2. a kind of Card-type electromagnetic sensor detecting in-service point tongue according to claim 1, is characterized in that: the thickness of described resilient nonmetallic thin slice is less than gap when point tongue and backbone close.
3. one kind utilizes the in-service point tongue detection method of Card-type electromagnetic sensor described in claim 1 or 2, it is characterized in that: Card-type electromagnetic sensor is connected with electromagnetic detection instrument by cable, the vertical side that Card-type electromagnetic sensor is attached to point tongue by testing staff at the uniform velocity moves scanning, when having section crack defect bottom the vertical side of point tongue, crack defect signal is sent in electromagnetic detection instrument and shows and output of reporting to the police by the differential detection coil groups that sensing range covers section crack defect, in Card-type electromagnetic sensor, longitudinal arrangement multiple differential detection coil groups, the differential detection coil groups that sensing range does not cover section crack defect does not have flaw indication to be sent to electromagnetic detection instrument, the height of section crack defect can be calculated with this, and assess its order of severity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310151911.XA CN103235033B (en) | 2013-04-27 | 2013-04-27 | A kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue |
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| CN201310151911.XA CN103235033B (en) | 2013-04-27 | 2013-04-27 | A kind of Card-type electromagnetic sensor and detection method detecting in-service point tongue |
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| CN103235033B true CN103235033B (en) | 2015-08-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107219299A (en) * | 2017-06-02 | 2017-09-29 | 爱德森（厦门）电子有限公司 | It is a kind of with Steel Structure Weld crackle monitoring device and method |
| CN109060951A (en) * | 2018-08-01 | 2018-12-21 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Rail rail bottom dedicated swirl detection device |
| CN109946371A (en) * | 2019-04-04 | 2019-06-28 | 中国特种设备检测研究院 | A kind of metal defect detection sensor |
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| JP3407595B2 (en) * | 1997-04-01 | 2003-05-19 | 大同特殊鋼株式会社 | Eddy current flaw detector |
| JP3812559B2 (en) * | 2003-09-18 | 2006-08-23 | Ｔｄｋ株式会社 | Eddy current probe |
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| US5315234A (en) * | 1992-04-03 | 1994-05-24 | General Electric Company | Eddy current device for inspecting a component having a flexible support with a plural sensor array |
| US7560920B1 (en) * | 2005-10-28 | 2009-07-14 | Innovative Materials Testing Technologies, Inc. | Apparatus and method for eddy-current scanning of a surface to detect cracks and other defects |
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