CN102759576A - Method for detecting vertical cracks of rail base triangle areas - Google Patents
Method for detecting vertical cracks of rail base triangle areas Download PDFInfo
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- CN102759576A CN102759576A CN2011101103957A CN201110110395A CN102759576A CN 102759576 A CN102759576 A CN 102759576A CN 2011101103957 A CN2011101103957 A CN 2011101103957A CN 201110110395 A CN201110110395 A CN 201110110395A CN 102759576 A CN102759576 A CN 102759576A
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Abstract
The invention discloses a method for detecting vertical cracks of rail base triangle areas and relates to a flaw detection method for steel rail bases. A tandem probe on a steel rail flaw detector is used for scanning rail bases, reflected wave generated by vertical cracks can be received while no or a little collar or base metal wave can be received, so that the vertical cracks of the rail base triangle areas can be caught, flaw detection capacity is improved, and accident of steel rail breakage is reduced effectively. The tandem probe is provided with a plurality of chips which are preferably 2-6, and the reflected waves generated by the vertical cracks is recorded in a whole recorder of a steel rail flaw detector for browsing and playback. The method has the advantages that by the aid of the tandem probe, the vertical cracks of the rail base triangle areas can be detected, complete detection to the steel rails can be realized, all flaws of the steel rails can be searched, flaw detection capacity is improved, breakage accidents of the steel rails are reduced, and transport tasks of railways can be guaranteed to complete on time safely.
Description
Technical field
The present invention relates to a kind of detection method that the rail flange of rail is detected a flaw of being used for.
Background technology
Along with gapless rail applied more and more on railway, add domestic railway heavy load delivery, quickened the wearing and tearing of rail; Especially at the circuit of passenger-cargo mixed race; Because of passenger and freight train speed differs bigger, the superelevation in curve location can not satisfy the requirement of various speed, causes the track side abrasion on the curve serious; Cause rail weldering muscle or fractureing of female ability to happen occasionally; Weldering muscle or female contingent zone that just fractures spread all over each position of rail, comprise rail head, the web of the rail and the flange of rail, and wherein flange of rail trigonum weld seam or female just longitudinal crack are again one of weld seam or female great reason that just fractures; As shown in Figure 1. for the longitudinal crack of the weld seam on flange of rail trigonum or female, the employed method of detection of existing rail flaw detector can't or be difficult to survey.Existing rail flaw detector is accomplished by former and later two 37 degree probes the scanning of the rail flange of rail. and since this 37 degree probe emissions with receive wafer be side by side at same position; For this longitudinal crack (2) that occurs in flange of rail trigonum; Because damage is vertical; The sound wave that sends produces corner reflection, and this probe generally can not receive the sound wave that reflects.Even can receive a little reflection waves in addition, because weldering muscle or female just itself certain angle is arranged, the reflection wave that it produced, probe can receive that also this just declares wound to defectoscope and causes difficulty.
The methods of listing in the patent No. " 200620061728.6 supersonic detection device " and the patent No. " the steel rail defect display packing of 200710030713.2 rail flaw detector "; The non-perpendicular crackle of rail head, the web of the rail and the flange of rail can only be detected, the vertical crack of the flange of rail can not be detected.
Summary of the invention
According to above deficiency, the present invention provides a kind of method that detects flange of rail trigonum vertical crack, and what solve flange of rail trigonum vertical crack can not found problem.
The technical scheme that the present invention adopts is: through using the tandem probe; The flange of rail is carried out scanning; Receive that the reflection wave that vertical crack produces can not receive or receive less weldering muscle or female just ripple simultaneously; Catch the vertical crack of flange of rail trigonum easily, improved the defect detecting test ability, effectively reduce the generation of brittle fractures of rail accident.
Characteristic of the present invention:
1, on rail flaw detector, uses tandem probe detection rail failure.
2, it is 2-6 wafer that the tandem probe that uses has several wafers, preferred version;
3, the whole process record the inside that the reflection wave that produces is recorded in rail flaw detector supplies to browse playback.
Comprise but do not limit following steps:
The first step is installed the tandem probe on rail flaw detector; The tandem preferred 2-6 wafer of popping one's head in.
In second step, use the tandem probe to on-the-spot rail examination;
The 3rd step, the reflection wave that produces is browsed playback, find on-the-spot hurt of omitting.
We make contrast, and are as shown in Figure 1, and there is flange of rail vertical crack in the rail flange of rail, and for this longitudinal crack that occurs in flange of rail trigonum, because damage is vertical, the sound wave that sends produces corner reflection, and this probe generally can not receive the sound wave that reflects.Existing employing technology is as shown in Figure 2, and the single wafer of inspection car produces radioactive wave, and radioactive wave is mapped to flange of rail vertical crack place; Produce reflection wave, according to reflection law, the route that reflection wave reflects is as shown in Figure 2; Reflection wave has reflexed to the rear of single-chip, moves forward with certain speed when adding the inspection car flaw detection, causes reflection wave far can not reflex on the single-chip; Single-chip is not received reflection wave; Just mean that the single-chip analysis result is rail not damage here, but actual conditions are rail damage is arranged, this just brings potential safety hazard to people's lives and properties.
Adopt the present invention, on rail flaw detector, use the tandem probe as shown in Figure 3, the first tandem wafer produces radioactive wave; When being mapped to flange of rail vertical crack place; Produce reflection wave, according to reflection law, reflection wave is mapped on the second tandem wafer; The second tandem wafer has been collected relevant information accurately, and inspection car is reported to the police immediately or confirmed when browsing playback.Same principle, the radioactive wave of second tandem wafer emission is got to the reflection wave that flange of rail vertical crack place produces, and is received by the 3rd tandem wafer; So; Improved the defect detecting test ability, effectively reduced the generation of brittle fractures of rail accident, ensured railway security, accomplished transport task on schedule.
Of the present invention owing to effect is: through the flaw detection of tandem probe; The most important thing is to detect flange of rail trigonum vertical crack; Realization is surveyed rail comprehensively, accomplishes that one of rail failure does not fall, and has improved the defect detecting test ability; Effectively reduce the generation of brittle fractures of rail accident, ensured railway security, accomplished transport task on schedule.
Description of drawings
Further the present invention is explained below in conjunction with accompanying drawing:
Fig. 1 is rail flange of rail trigonum vertical crack figure;
Fig. 2 is that single-chip is surveyed flange of rail trigonum vertical crack synoptic diagram;
Fig. 3 is that 6 wafers are surveyed flange of rail trigonum vertical crack synoptic diagram;
Shown in the figure: 1, the rail flange of rail, 2, flange of rail vertical crack, 3, radioactive wave; 4, single-chip, 5, reflection wave, 6-1, the first tandem wafer; 6-2, the second tandem wafer, 6-3, the 3rd tandem wafer, 6-4, the 4th tandem wafer; 6-5, the 5th tandem wafer, 6-6, the 6th tandem wafer.
Embodiment
Further the present invention is explained below in conjunction with embodiment and accompanying drawing:
Embodiment 1, a kind of method that detects flange of rail trigonum vertical crack comprise following three steps:
The first step is installed the tandem that includes 2～6 a wafers probe on rail flaw detector.The angle of these wafers can be selected from 37 ° to 45 °
In second step, use the tandem probe to on-the-spot rail examination; As shown in Figure 1, there is flange of rail vertical crack (2) in the rail flange of rail (1), and existing techniques can not receive the sound wave that reflects; Inspection car work is as shown in Figure 2; The single-chip of inspection car (4) produces radioactive wave (3), and radioactive wave (3) is mapped to flange of rail vertical crack (2) and locates, and produces reflection wave (5); According to reflection law, the reflection wave that reflects (5) has reflexed to the rear of single-chip (4).
Adopt the present invention, the tandem wafer is installed, inspection car work is as shown in Figure 3; The first tandem wafer (6-1) produces radioactive wave (3), locates when being mapped to flange of rail vertical crack (2), produces reflection wave (5); According to reflection law; Reflection wave (5) is mapped on the second tandem wafer (6-2), and the second tandem wafer (6-2) has been collected relevant information accurately, and defectoscope is reported to the police immediately or confirmed when browsing playback; So analogize, the radioactive wave (3) of the 5th tandem wafer (6-5) emission is got to the reflection wave (5) that flange of rail vertical crack (2) is located to produce, and is received by the 6th tandem wafer (6-6), has effectively guaranteed the accuracy rate of information acquisition.
The 3rd step, the reflection wave (5) of storage is browsed playback, find on-the-spot hurt of omitting.Effect of the present invention is to have improved the defect detecting test ability, effectively reduces the generation of brittle fractures of rail accident, has ensured railway security, has accomplished transport task on schedule.
Claims (5)
1. method that detects flange of rail trigonum vertical crack; Characteristic is through using the tandem probe; The flange of rail is carried out scanning, receive that the reflection wave that vertical crack produces can not receive or receive less weldering muscle or female just ripple simultaneously, catches the vertical crack of flange of rail trigonum easily; Improve the defect detecting test ability, effectively reduced the generation of brittle fractures of rail accident.
2. a kind of method that detects flange of rail trigonum vertical crack according to claim 1, characteristic are on rail flaw detector, to use tandem probe detection rail failure.
3. a kind of method that detects flange of rail trigonum vertical crack according to claim 1, characteristic are that several wafers, preferred version are arranged is 2-6 wafer to described tandem probe.
4. a kind of method that detects flange of rail trigonum vertical crack according to claim 1, characteristic are that the whole process record the inside that reflection wave that defectoscope produces is recorded in rail flaw detector supplies to browse playback.
5. a kind of method that detects flange of rail trigonum vertical crack according to claim 1, characteristic are to comprise but do not limit following steps: the first step, the tandem probe is installed on rail flaw detector; The tandem preferred 2-6 wafer of popping one's head in; In second step, use the tandem probe to on-the-spot rail examination; The 3rd step, the reflection wave that produces is browsed playback, find on-the-spot hurt of omitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101103957A CN102759576A (en) | 2011-04-29 | 2011-04-29 | Method for detecting vertical cracks of rail base triangle areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101103957A CN102759576A (en) | 2011-04-29 | 2011-04-29 | Method for detecting vertical cracks of rail base triangle areas |
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| CN102759576A true CN102759576A (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101103957A Pending CN102759576A (en) | 2011-04-29 | 2011-04-29 | Method for detecting vertical cracks of rail base triangle areas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053611A (en) * | 2016-05-25 | 2016-10-26 | 中国铁道科学研究院 | Wheel type probe capable of detecting rail bottoms |
| CN111007146A (en) * | 2019-11-27 | 2020-04-14 | 合肥超科电子有限公司 | Steel rail vertical damage detection system and detection method |
| CN112858488A (en) * | 2019-11-27 | 2021-05-28 | 合肥超科电子有限公司 | Wheel type probe fixing system for vertical flaw scanning |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916630Y (en) * | 2006-07-12 | 2007-06-27 | 广东汕头超声电子股份有限公司 | Ultrasonic detector |
| CN201116920Y (en) * | 2007-08-31 | 2008-09-17 | 北京安通伟业铁路工务技术有限公司 | Combined probe used for steel rail welding seam ultrasonic inspection |
-
2011
- 2011-04-29 CN CN2011101103957A patent/CN102759576A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916630Y (en) * | 2006-07-12 | 2007-06-27 | 广东汕头超声电子股份有限公司 | Ultrasonic detector |
| CN201116920Y (en) * | 2007-08-31 | 2008-09-17 | 北京安通伟业铁路工务技术有限公司 | Combined probe used for steel rail welding seam ultrasonic inspection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053611A (en) * | 2016-05-25 | 2016-10-26 | 中国铁道科学研究院 | Wheel type probe capable of detecting rail bottoms |
| CN111007146A (en) * | 2019-11-27 | 2020-04-14 | 合肥超科电子有限公司 | Steel rail vertical damage detection system and detection method |
| CN112858488A (en) * | 2019-11-27 | 2021-05-28 | 合肥超科电子有限公司 | Wheel type probe fixing system for vertical flaw scanning |
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Application publication date: 20121031 |