CN103868997A - Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle - Google Patents
Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle Download PDFInfo
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- CN103868997A CN103868997A CN201210534462.2A CN201210534462A CN103868997A CN 103868997 A CN103868997 A CN 103868997A CN 201210534462 A CN201210534462 A CN 201210534462A CN 103868997 A CN103868997 A CN 103868997A
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- flaw detection
- longitudinal wave
- small
- angle longitudinal
- locomotive axle
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a probe fixing manual scanning rack used during small-angle longitudinal wave flaw detection of a locomotive axle, and particularly relates to a small-angle longitudinal wave flaw detection scanning rack for a railway locomotive axle. The small-angle longitudinal wave flaw detection scanning rack for the railway locomotive axle mainly aims to solve the problem that the flaw detection precision and accuracy are affected as a fixed point is unavailable when the probe is moved during manual scanning of a wheel seat and a gear seat insertion part of the locomotive axle by using a small-angle longitudinal wave flaw detection method. A scanning rack fixing plate is provided with a positioning round pin concentric with the scanning rack fixing plate and a rectangular groove. The small-angle longitudinal wave flaw detection scanning rack for the railway locomotive axle is reasonable in design and simple in structure and is suitable for the small-angle longitudinal wave flaw detection of axles of most railway locomotives. The main acoustic beam of ultrasonic wave always passes through the axle of a center hole of the locomotive axle during flaw detection, the lengths of flaws can be measured accurately, and the flaw detection precision and accuracy are ensured.
Description
Technical field
A kind of scanning equipment while the present invention relates to the flaw detection of railway locomotive axletree small angle longitudinal wave, the fixing manual scanning frame of one probe while relating to specifically the flaw detection of motorcycle axle small angle longitudinal wave.
Background technology
The Ultrasonic Detection that rolling stock's axletree 1 is bumped into portion is at present all to adopt manual testing method mostly, mainly comprises small angle longitudinal wave defectoscopy and shear wave incident method.As shown in Figure 1, small angle longitudinal wave defectoscopy is that small angle longitudinal wave probe 8 is placed in motorcycle axle 1 both ends of the surface 6, detecting wheel 4 wheel seats and gear 5 wheel seats are bumped into portion 3,2 respectively, small angle longitudinal wave probe 8 is on axle end face 6 when manual scanning, probe 8 need to point to center pit 10, and in axial end 6, make reciprocating saw profile of tooth around center pit 10 and move, motion track 12 as shown in Figure 2.But while movement in axial end 6 due to the probe 8 of ultra-sonic defect detector 7, there is no point of fixity, while being not easy to guarantee to survey, ultrasound wave Main beam 9 passes center pit 10 axis of axletree all the time, therefore can affect to a certain extent flaw detection precision and accuracy, and also cannot measure comparatively exactly its length in the time that discovery axletree is bumped into the circumferential crack of portion.
Summary of the invention
The object of the invention is for above-mentioned deficiency, and a kind of of proposition can guarantee that in the time of Ultrasonic Detection railway locomotive axletree the Main beam of small angle longitudinal wave probe passes the center pit axis of axle end face all the time, guarantee to find axletree to be bumped into the circumferential crack maximum reflection ripple of portion, can measure exactly the manual failure detector of one of crack length.
Technical solution of the present invention is: motorcycle axle small angle longitudinal wave flaw detection scanning frame is: on scanning frame fixed head, be provided with a location round pin concentric with scanning frame fixed head, be provided with a rectangular channel on scanning frame fixed head.
Rectangular channel described in technical solution of the present invention is located on the scanning frame fixed head of contrary one side of location round pin, and the long limit of rectangular channel is less than the radius of scanning frame fixed head.
The circumference of the scanning frame fixed head described in technical solution of the present invention is provided with angle groove.
The present invention is reasonable in design, simple in structure, can be applied to the axletree small angle longitudinal wave flaw detection of most of rolling stocks, while guaranteeing to survey, ultrasonic beam is passed the center pit axis of axletree all the time, axletree is bumped into portion's circumferential crack length can Accurate Determining, has therefore guaranteed precision and the accuracy of flaw detection.
Accompanying drawing explanation
Fig. 1 is that axletree is bumped into portion's small angle longitudinal wave method of detection schematic diagram.
Fig. 2 be small angle longitudinal wave probe from axial end to being bumped into portion's scanning schematic diagram.
Fig. 3 is structural representation of the present invention.
Fig. 4 is the left view of Fig. 3.
Fig. 5 uses the present invention to measure axletree and be bumped into the schematic diagram of portion's circumferential crack length.
Embodiment
As Fig. 3, shown in 4, the motorcycle axle small angle longitudinal wave manual scanning frame of detecting a flaw is on a scanning frame fixed head 11, to be provided with a register pin 13, scanning frame fixed head 11 is plectanes, register pin 13 is fixed on scanning frame fixed head 11 with scanning frame fixed head 11 is concentric, the size of the location diameter of round pin 13 and the center pit of axletree 1 matches, on scanning frame fixed head 11, be provided with a rectangular channel 14, rectangular channel 14 is located on the scanning frame fixed head 11 of contrary one side of fixed locating stud 13, the long limit of rectangular channel 14 is less than the radius of scanning frame fixed head 11, on the circumference of scanning frame fixed head 11, establish angled scale mark 15.Principle of work: simultaneously use scanning frame of the present invention and small angle longitudinal wave probe 8, from axial end 6, the axletree portion of being bumped into is carried out to scanning, after determining flaw detection sensitivity, on the axle end face 6 of actual detection, brush machine oil, the location round pin 13 of then small angle longitudinal wave being detected a flaw on manual scanning frame inserts in the center pit 10 of axletree 1; Small angle longitudinal wave probe 8 is placed in the rectangular channel 14 of scanning frame, radially move forward and backward detection, probe 8 only moves forward and backward in rectangular channel 14 scopes, guarantee that probe 8 points to center pit axis all the time, the 8 uniform stressed 2N ~ 5N that simultaneously pop one's head in, make step-by-step movement with the speed of 20mm/s ~ 50mm/s and repeatedly move.In the time finding crack deflection ripple, first front and back, circumferential mobile probe 8, find out after the maximum reflection ripple of crackle, be adjusted to benchmark wave height 80%, the 6dB that gains again, then respectively along clockwise with counterclockwise rotate scanning frame of the present invention and probe 8, in the time that crack deflection wave height is all reduced to 80%, use axial end 6 edges corresponding to 0 ° groove of color marking pen in rectangular channel 14 dead aheads to make respectively mark twice, as shown in Figure 5.Then just can determine the anglec of rotation of probe 8 when mark is aimed to the scale mark on scanning frame of the present invention, finally utilize following formula to calculate the circumferential lengths of crackle.
Lab=R×θ
In formula: the circumferential lengths of Lab-crackle, mm;
The axle radius of R-cracks, mm;
θ-probe rotation angle, radian.
The axletree reference block in kind that uses the present invention to survey two kinds of vehicles is bumped into some ARTIFICIAL CRACK of portion, with its detection accuracy of this contrast verification.
The contrast verification of table 1 crackle maximum reflection echo
Use the present invention to measure many ARTIFICIAL CRACK in the axletree reference block in kind of two kinds of vehicles, verify with this error range of measuring ARTIFICIAL CRACK length.
Table 2 is measured the contrast verification of crack length
Data from table 1 and table 2, use the present invention can find better maximum reflection ripple and the measured length of circumferential crack, detection efficiency and accuracy are effectively improved, therefore very practical and feasibility in the small angle longitudinal wave flaw detection process of axletree.
Claims (3)
1. a railway locomotive axletree small angle longitudinal wave flaw detection scanning frame, it is characterized in that: on scanning frame fixed head (11), be provided with a location round pin (13) concentric with scanning frame fixed head (11), on scanning frame fixed head (11), be provided with a rectangular channel (14).
2. railway locomotive axletree small angle longitudinal wave flaw detection scanning frame according to claim 1, it is characterized in that: described rectangular channel (14) is located on the scanning frame fixed head (11) of contrary one side of location round pin (13), and the long limit of rectangular channel (14) is less than the radius of scanning frame fixed head (11).
3. railway locomotive axletree small angle longitudinal wave flaw detection scanning frame according to claim 1, is characterized in that: the circumference of described scanning frame fixed head (11) is provided with angle groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534462.2A CN103868997A (en) | 2012-12-12 | 2012-12-12 | Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534462.2A CN103868997A (en) | 2012-12-12 | 2012-12-12 | Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103868997A true CN103868997A (en) | 2014-06-18 |
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ID=50907759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210534462.2A Pending CN103868997A (en) | 2012-12-12 | 2012-12-12 | Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle |
Country Status (1)
| Country | Link |
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| CN (1) | CN103868997A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674929A (en) * | 2022-05-27 | 2022-06-28 | 南京富岛数字化检测技术有限公司 | Small-angle flaw detection device and method based on double-probe-wheel structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365669Y (en) * | 1999-02-01 | 2000-02-23 | 北京安通铁路工务技术开发公司 | Combined probe for axle ultrasound wave detection |
| CN102235888A (en) * | 2010-05-05 | 2011-11-09 | 汪静 | Scanning device of nondestructive testing instrument |
| CN102608218A (en) * | 2012-04-19 | 2012-07-25 | 南车戚墅堰机车有限公司 | Wheel rotating machine for detecting defects of bogie |
| CN202974957U (en) * | 2012-12-12 | 2013-06-05 | 南车洛阳机车有限公司 | Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle |
-
2012
- 2012-12-12 CN CN201210534462.2A patent/CN103868997A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365669Y (en) * | 1999-02-01 | 2000-02-23 | 北京安通铁路工务技术开发公司 | Combined probe for axle ultrasound wave detection |
| CN102235888A (en) * | 2010-05-05 | 2011-11-09 | 汪静 | Scanning device of nondestructive testing instrument |
| CN102608218A (en) * | 2012-04-19 | 2012-07-25 | 南车戚墅堰机车有限公司 | Wheel rotating machine for detecting defects of bogie |
| CN202974957U (en) * | 2012-12-12 | 2013-06-05 | 南车洛阳机车有限公司 | Small-angle longitudinal wave flaw detection scanning rack for railway locomotive axle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674929A (en) * | 2022-05-27 | 2022-06-28 | 南京富岛数字化检测技术有限公司 | Small-angle flaw detection device and method based on double-probe-wheel structure |
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Application publication date: 20140618 |
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| RJ01 | Rejection of invention patent application after publication |