CN106184283A - Rail foot slight crack detector - Google Patents
Rail foot slight crack detector Download PDFInfo
- Publication number
- CN106184283A CN106184283A CN201610501361.3A CN201610501361A CN106184283A CN 106184283 A CN106184283 A CN 106184283A CN 201610501361 A CN201610501361 A CN 201610501361A CN 106184283 A CN106184283 A CN 106184283A
- Authority
- CN
- China
- Prior art keywords
- probe
- rail
- installing hole
- slight crack
- crack detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
- B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
- G01N29/2443—Quartz crystal probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
- G01N2291/2623—Rails; Railroads
Abstract
The invention discloses a kind of rail foot slight crack detector, it includes probe and testing stand, probe includes lid and probe cassette, lid covers probe cassette, probe cassette inner bottom surface is equipped with glass voussoir, glass voussoir upper surface connects piezoelectric chip, piezoelectric chip is connected by wire with the display screen of crack detector, testing stand generally bar shaped, the first installing hole and the second installing hole is had on it, described probe is two, it is fixed in opposite directions in the first installing hole and the second installing hole by bolt respectively, the ultrasound wave of two probes injects a level at a distance of L=2KH, K is the tangent value of probe refraction angle, H is the height of rail, present invention tool can judge whether rail rail base exists slight crack rapidly, the advantage that simultaneously can accurately judge rail rail base fracture position.
Description
Technical field
The present invention relates to the detection device of a kind of rail slight crack, particularly a kind of rail foot slight crack detector.
Background technology
At present, the method having now found that rail foot slight crack is to use the rail examination dolly carrying before and after 37 ° probe to lead to
Crossing end corner reflection principle to find: by 37 ° of probe placement at Rail Surface, the ultrasound wave that probe sends enters rail and runs into bottom
During slight crack, ultrasound wave reflects back into probe through twice, and ultrasound wave is transformed into the signal of telecommunication and passes to oscillograph, at oscillograph by probe
Show corresponding waveform and image.But, when flaw detection trolley runs into rail foot weld seam during carrying out, oscillograph is corresponding
Being alternately present waveform on 37 ° of passages, very difficult judgement is flange of rail slight crack or the commissure flange of rail weldering signal that is reflected back of muscle, even if sentencing
Being set to flange of rail slight crack, the precision that trauma is positioned by the mode using steel ruler to measure is the lowest.Flaw detection trolley is difficult to distinguish commissure rail
Bottom road, slight crack and rail base weldering muscle, cause difficulty to rail examination detection, easily cause false judgment.
Summary of the invention
The invention aims to overcome the above-mentioned weak point of prior art, and provide one can quickly identify track
Bottom slight crack, and can be to its pinpoint rail foot slight crack detector.
The technical scheme is that a kind of rail foot slight crack detector, it includes probe and testing stand, and probe includes
Lid and probe cassette, lid covers probe cassette, and probe cassette inner bottom surface connects piezo crystals equipped with glass voussoir, glass voussoir upper surface
Sheet, piezoelectric chip is connected by wire with the display screen of crack detector, testing stand generally bar shaped, and it has the first installing hole
With the second installing hole, described probe is two, is fixed in opposite directions in the first installing hole and the second installing hole by bolt respectively, two
The ultrasound wave of individual probe injects the tangent value that a level apart L=2KH, K are probe refraction angle, and H is the height of rail.
The further technical scheme of the present invention is: described probe is ultrasound probe.
The further technical scheme of the present invention is: described glass voussoir is triangle lucite voussoir.
The further technical scheme of the present invention is: described testing stand is provided with groove, and groove is located at the ultrasonic of two probes
Ripple is injected in the middle of a level interval.
The present invention compared with prior art, has a characteristic that 1, can judge whether rail foot exists rapidly and split
Trace, can clearly distinguish slight crack and the weld seam of rail foot, and 2, while judging that rail foot exists slight crack, can accurately judge
The position of slight crack, 3, present configuration simple, it is easy to operation, detection efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；Fig. 2 is that the present invention detects rail foot slight crack schematic diagram；Fig. 3 is the present invention
Detection rail foot weld seam schematic diagram.
Reference is: 2, testing stand；4, bolt；11, lid；12, probe cassette；13, wire；14, piezoelectric chip；
15, glass voussoir；21, the first installing hole；22, the second installing hole；23, groove；31, rail head；32, the web of the rail；33, the flange of rail；34,
Slight crack；35, weld seam.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, the present invention is made further with accompanying drawing below in conjunction with embodiment
Bright, that embodiment is mentioned content not limitation of the invention.
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of rail foot slight crack detector, it includes that probe and testing stand 2, probe include lid 11 He
Probe cassette 12, lid 11 covers probe cassette 12, and probe cassette 12 inner bottom surface connects equipped with glass voussoir 15, glass voussoir 15 upper surface
Piezoelectric chip 14, piezoelectric chip 14 is connected by wire 13 with the display screen of crack detector, and testing stand 2 generally bar shaped, on it
Having the first installing hole 21 and the second installing hole 22, described probe is two, is fixed on the first installation in opposite directions by bolt 4 respectively
In hole 21 and the second installing hole 22, it is just to pop one's head in refraction angle that the ultrasound wave of two probes injects a level at a distance of L=2KH, K
Cutting value, H is the height of rail.
Described probe is ultrasound probe.
Described glass voussoir 15 is triangle lucite voussoir.
Described testing stand 2 is provided with groove 23, and groove 23 is located at the ultrasound wave of two probes and injects in the middle of a level interval.
Operation principle and the using method of the present invention be: as in figure 2 it is shown, the present invention be placed on rail, piezoelectric chip
14 can convert thereof into ultrasound wave after receiving electric current, and ultrasound wave is through front triangle lucite voussoir 15 and probe cassette
Entering rail from ultrasound wave incidence point after 12, ultrasound wave passes rail head 31 and the web of the rail 32, reflexes to rail base through the flange of rail 33
Slight crack 34, ultrasound wave reflects back into piezoelectric chip 14 through rail base slight crack 34 again, and this process is known as holding corner reflection.Piezoelectricity
The ultrasound wave of acceptance is converted into the signal of telecommunication and passes to crack detector through wire 13 by wafer 14, and the display screen of crack detector there will be ripple
Shape, meanwhile signal is also passed back and waveform is occurred by another ultrasound probe, and two waveforms occur simultaneously, and position is identical,
Can be determined as rail base slight crack, according to similar triangle theory, position at the bottom of the Rail indicated by groove 23 is rail
The position at rail base slight crack place.If during as it is shown on figure 3, ultrasound wave runs into steel rail welding line, a ultrasound probe is according to end
Corner reflection principle finds weldering muscle 35, and reflection can produce waveform by signal, and the ultrasound wave of another ultrasound probe is anti-through the flange of rail
Penetrate and be not returned to ultrasound probe, the most do not produce waveform, only one of which waveform on oscillograph, then it is judged to it is not at the bottom of rail track
Portion's slight crack, in conjunction with visual inspection, can determine that as weldering muscle.
Above-described embodiment is the present invention preferably implementation, and in addition, the present invention can realize with alternate manner,
On the premise of conceiving without departing from the technical program, any obvious replacement is all within protection scope of the present invention.
Claims (4)
1. a rail foot slight crack detector, it is characterised in that: it includes that probe and testing stand (2), probe include lid
(11) and probe cassette (12), lid (11) covers probe cassette (12), and probe cassette (12) inner bottom surface is equipped with glass voussoir (15), glass
Voussoir (15) upper surface connects piezoelectric chip (14), and piezoelectric chip (14) is connected by wire (13) with the display screen of crack detector
Connecing, testing stand (2) generally bar shaped, it has the first installing hole (21) and the second installing hole (22), described probe is two,
Being fixed in opposite directions in the first installing hole (21) and the second installing hole (22) by bolt (4) respectively, the ultrasound wave of two probes is penetrated
Access point level is at a distance of the tangent value that L=2KH, K are probe refraction angle, and H is the height of rail.
A kind of rail foot slight crack detector the most according to claim 1, it is characterised in that: described probe is ultrasound wave
Probe.
A kind of rail foot slight crack detector the most according to claim 1, it is characterised in that: described glass voussoir (15)
For triangle lucite voussoir.
A kind of rail foot slight crack detector the most according to claim 1, it is characterised in that: described testing stand (2) sets
The ultrasound wave having groove (23), groove (23) to be located at two probes is injected in the middle of a level interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501361.3A CN106184283A (en) | 2016-06-30 | 2016-06-30 | Rail foot slight crack detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610501361.3A CN106184283A (en) | 2016-06-30 | 2016-06-30 | Rail foot slight crack detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106184283A true CN106184283A (en) | 2016-12-07 |
Family
ID=57463067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610501361.3A Pending CN106184283A (en) | 2016-06-30 | 2016-06-30 | Rail foot slight crack detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106184283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632273A (en) * | 2019-10-11 | 2019-12-31 | 龙游岛式智能科技有限公司 | Track bottom crack detection device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000055891A (en) * | 1998-08-12 | 2000-02-25 | Nkk Corp | Method and apparatus for ultrasonic flaw inspection of steel tube |
| CN2459658Y (en) * | 2000-12-27 | 2001-11-14 | 李焕廷 | Double-prober stick type steel rail fault detector |
| CN201210151Y (en) * | 2008-06-12 | 2009-03-18 | 浙江师范大学 | Material internal stress ultrasonic detection apparatus |
| CN103439408A (en) * | 2013-08-20 | 2013-12-11 | 北京巴布科克·威尔科克斯有限公司 | Ultrasonic detection method for weld joint of small-caliber pipe shelf angle |
| CN104458919A (en) * | 2014-12-03 | 2015-03-25 | 北京中电龙源环保科技有限公司 | Small K-value ultrasonic flaw detection dual-crystal probe and flaw detection method thereof |
| CN104990988A (en) * | 2015-07-15 | 2015-10-21 | 常州市常超电子研究所有限公司 | Anti-interference ultrasonic probe |
| CN104990987A (en) * | 2015-07-15 | 2015-10-21 | 常州市常超电子研究所有限公司 | Triangular ultrasonic probe |
| CN105259254A (en) * | 2015-11-12 | 2016-01-20 | 湖南高速铁路职业技术学院 | Scanning device for steel rail bottom transverse cracks |
| CN205175970U (en) * | 2015-11-12 | 2016-04-20 | 湖南高速铁路职业技术学院 | Rail flange of rail transverse crack scanning apparatus |
-
2016
- 2016-06-30 CN CN201610501361.3A patent/CN106184283A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000055891A (en) * | 1998-08-12 | 2000-02-25 | Nkk Corp | Method and apparatus for ultrasonic flaw inspection of steel tube |
| CN2459658Y (en) * | 2000-12-27 | 2001-11-14 | 李焕廷 | Double-prober stick type steel rail fault detector |
| CN201210151Y (en) * | 2008-06-12 | 2009-03-18 | 浙江师范大学 | Material internal stress ultrasonic detection apparatus |
| CN103439408A (en) * | 2013-08-20 | 2013-12-11 | 北京巴布科克·威尔科克斯有限公司 | Ultrasonic detection method for weld joint of small-caliber pipe shelf angle |
| CN104458919A (en) * | 2014-12-03 | 2015-03-25 | 北京中电龙源环保科技有限公司 | Small K-value ultrasonic flaw detection dual-crystal probe and flaw detection method thereof |
| CN104990988A (en) * | 2015-07-15 | 2015-10-21 | 常州市常超电子研究所有限公司 | Anti-interference ultrasonic probe |
| CN104990987A (en) * | 2015-07-15 | 2015-10-21 | 常州市常超电子研究所有限公司 | Triangular ultrasonic probe |
| CN105259254A (en) * | 2015-11-12 | 2016-01-20 | 湖南高速铁路职业技术学院 | Scanning device for steel rail bottom transverse cracks |
| CN205175970U (en) * | 2015-11-12 | 2016-04-20 | 湖南高速铁路职业技术学院 | Rail flange of rail transverse crack scanning apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632273A (en) * | 2019-10-11 | 2019-12-31 | 龙游岛式智能科技有限公司 | Track bottom crack detection device |
| CN110632273B (en) * | 2019-10-11 | 2020-11-10 | 义乌国信土地规划咨询有限公司 | Track bottom crack detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |