CN103235033A - Card-type electromagnetic sensor for detecting in-service turnout switch rails and detecting method - Google Patents
Card-type electromagnetic sensor for detecting in-service turnout switch rails and detecting method Download PDFInfo
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- CN103235033A CN103235033A CN201310151911XA CN201310151911A CN103235033A CN 103235033 A CN103235033 A CN 103235033A CN 201310151911X A CN201310151911X A CN 201310151911XA CN 201310151911 A CN201310151911 A CN 201310151911A CN 103235033 A CN103235033 A CN 103235033A
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Abstract
The invention discloses a card-type electromagnetic sensor for detecting in-service turnout switch rails and a detecting method. The sensor comprises an elastic nonmetal thin sheet, two magnet thin sheets, and a plurality of detecting coils. Based on electromagnetic nondestructive detecting principle, the card-type electromagnetic detecting sensor is directly attached to vertical side faces of switch rails for detection, can not only detect section cracks at the bottom of the switch rails, but also can detect the heights of the section cracks so as to evaluate the severity of the section cracks; the switch rails do not need to be moved in the detection process; and the method is simple, high in efficiency, relatively low in detection cost, and applicable to in-situ quick detecting work on the in-service turnout switch rails.
Description
Affiliated technical field
The present invention relates to a kind of lossless detection method and device, particularly relate to a kind of detection in card form electromagnetic sensor and the detection method of labour point tongue.
Background technology
The characteristics of railway switch tongue are that section width narrows down gradually; pressure is inhomogeneous; the more narrow pressure of section width is more big; the fatigue fracture crackle very easily appears in point tongue when labour; usually can begin to occur section crack from tongue vertical side bottom; as untimely discovery, section crack further upwards enlarges, and the tongue fracture serious accident that the train was derailed may take place.At present the ultrasonic detection methods that adopt carry out manual detection more, because the gap of the vertical side of tongue during with the backbone closure has only about 1mm, can't directly detect, need move tongue or detect from the arcuate flanks of tongue, detection difficulty is bigger, and efficient is lower, also occurs the situation of defective omission easily.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, card form electromagnetic sensor and the detection method of a kind of detection at the labour point tongue are provided, this design is based on the electromagnetic nondestructive principle, the vertical side that adopts the card form electromagnetic detection sensor directly pasting tongue detects, not only can detect the section crack of tongue, and can detect the height of section crack, assess the order of severity of section crack with this, need not to move point tongue in the testing process, method is simple, the efficient height, it is lower to detect cost, is implemented in the fast detecting of labour point tongue original position.
The technical solution adopted for the present invention to solve the technical problems is: a kind of card form electromagnetic sensor that detects at the labour point tongue, sensor comprises elasticity nonmetallic slices, a plurality of magnetic test coil, two magnet thin slices.Described a plurality of magnetic test coil embeds and is fixed in the elasticity nonmetallic slices, wherein per two magnetic test coils are transversely arranged, anti-phase connects to form a differential detection coil groups, a plurality of differential detection coil groups are vertically arranged, the differential detection coil groups is hindered highly sensitive to sudden changes such as section cracks, vertically a plurality of differential detection coil groups of arranging can detect the height of section crack, assess the order of severity of section crack defective with this; Described two magnet thin slices embed respectively on the detection faces of the elasticity nonmetallic slices that is fixed on differential detection coil groups both sides, it is mobile that the magnet thin slice can make the card form electromagnetic detection sensor be close on the tongue vertical side, reduced and lifted from and rock the undesired signal that produces.Gap when the thickness of described elasticity nonmetallic slices is closed less than point tongue and backbone.
A kind of detection method that detects at the card form electromagnetic sensor of labour point tongue, the card form electromagnetic detection sensor is connected with the electromagnetic detection instrument by cable, the testing staff is attached to the card form electromagnetic detection sensor the at the uniform velocity mobile scanning of vertical side of point tongue, when the section crack defective is arranged at the vertical side bottom of blocking the way switch blade rail, the differential detection coil groups that sensing range covers the section crack defective sends to demonstration and the output of reporting to the police in the electromagnetic detection instrument with the crack defect signal, vertically arranging a plurality of differential detection coil groups in the card form electromagnetic detection sensor, the differential detection coil groups that sensing range does not cover the section crack defective does not have flaw indication to send to the electromagnetic detection instrument, with this height that can calculate the section crack defective, assess its order of severity.
The invention has the beneficial effects as follows, a kind of card form electromagnetic sensor and detection method that detects at the labour point tongue, based on the electromagnetic nondestructive principle, the vertical side that adopts the card form electromagnetic detection sensor directly pasting tongue detects, not only can detect the section crack of tongue bottom, and can detect the height of section crack, assess the order of severity of section crack with this, need not to move point tongue in the testing process, method is simple, the efficient height, it is lower to detect cost, is applicable in the work of labour point tongue original position fast detecting.
Be described in further detail below in conjunction with the present invention of embodiment, but a kind of card form electromagnetic sensor and detection method that detects at the labour point tongue of the present invention is not limited to embodiment.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the sensor synoptic diagram of the embodiment of the invention.
Fig. 2 is that the point tongue of the embodiment of the invention detects schematic three dimensional views.
Fig. 3 is the point tongue bottom section crack detection synoptic diagram of the embodiment of the invention.
Among the figure, 1. elasticity nonmetallic slices, 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
Among the embodiment shown in Figure 1, a kind of card form electromagnetic sensor that detects at the labour point tongue, sensor comprises elasticity nonmetallic slices 1, a plurality of magnetic test coil 2, two magnet thin slices 3.Described a plurality of magnetic test coil 2 embeds and is fixed in the elasticity nonmetallic slices 1, and wherein per two magnetic test coils 2 are transversely arranged, anti-phase connects to form a differential detection coil groups 4, and a plurality of differential detection coil groups 4 are vertically arranged; Described two magnet thin slices 3 embed on the detection faces of the elasticity nonmetallic slices 1 that is fixed on differential detection coil groups 4 both sides respectively.Gap when the thickness of described elasticity nonmetallic slices 1 is closed less than point tongue 5 and backbone 6.
Fig. 2, among the detection embodiment shown in Figure 3, a kind of detection method that detects at the card form electromagnetic sensor of labour point tongue, the card form electromagnetic detection sensor is connected with the electromagnetic detection instrument by cable, the testing staff is attached to the card form electromagnetic detection sensor the at the uniform velocity mobile scanning of vertical side of point tongue 5, when section crack defective 7 is arranged at the vertical side bottom of blocking the way switch blade rail 5, the differential detection coil groups 4 that sensing range covers section crack defective 7 sends to demonstration and the output of reporting to the police in the electromagnetic detection instrument with the crack defect signal, vertically arranging a plurality of differential detection coil groups 4 in the card form electromagnetic detection sensor, the differential detection coil groups 4 that sensing range does not cover section crack defective 7 does not have flaw indication to send to the electromagnetic detection instrument, with this height that can calculate the section crack defective, assess its order of severity.
Above-described embodiment only is used for further specifying a kind of detection of the present invention in card form electromagnetic sensor and the detection method of labour point tongue; but invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (3)
1. a detection is at the card form electromagnetic sensor of using as a servant point tongue, sensor comprises elasticity nonmetallic slices, a plurality of magnetic test coil, two magnet thin slices, it is characterized in that: described a plurality of magnetic test coils embed and are fixed in the elasticity nonmetallic slices, wherein per two magnetic test coils are transversely arranged, anti-phase connects to form a differential detection coil groups, and a plurality of differential detection coil groups are vertically arranged; Described two magnet thin slices embed respectively on the detection faces of the elasticity nonmetallic slices that is fixed on differential detection coil groups both sides.
2. a kind of card form electromagnetic sensor that detects at the labour point tongue according to claim 1 is characterized in that: the thickness of described elasticity nonmetallic slices is the gap during with the backbone closure less than point tongue.
3. a detection is in the detection method of the card form electromagnetic sensor of labour point tongue, it is characterized in that: the card form electromagnetic detection sensor is connected with the electromagnetic detection instrument by cable, the testing staff is attached to the card form electromagnetic detection sensor the at the uniform velocity mobile scanning of vertical side of point tongue, when the section crack defective is arranged at the vertical side bottom of blocking the way switch blade rail, the differential detection coil groups that sensing range covers the section crack defective sends to demonstration and the output of reporting to the police in the electromagnetic detection instrument with the crack defect signal, vertically arranging a plurality of differential detection coil groups in the card form electromagnetic detection sensor, the differential detection coil groups that sensing range does not cover the section crack defective does not have flaw indication to send to the electromagnetic detection instrument, can calculate the height of section crack defective with this, and assess its order of severity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN103235033A true CN103235033A (en) | 2013-08-07 |
| CN103235033B CN103235033B (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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- 2013-04-27 CN CN201310151911.XA patent/CN103235033B/en active Active
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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 |
| 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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| CN103235033B (en) | 2015-08-05 |
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