CN108106565A - A kind of steel rail straightness and torsion resistance detection device and method - Google Patents
A kind of steel rail straightness and torsion resistance detection device and method Download PDFInfo
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- CN108106565A CN108106565A CN201711363353.8A CN201711363353A CN108106565A CN 108106565 A CN108106565 A CN 108106565A CN 201711363353 A CN201711363353 A CN 201711363353A CN 108106565 A CN108106565 A CN 108106565A
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- rail
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- torsion resistance
- straightness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of steel rail straightness and torsion resistance detection device and method, including multiple Spectral Confocal displacement sensors and multiple linear laser profile sensors；Spectral Confocal displacement sensor is arranged symmetrically in rail head of rail both sides and rail foot both sides, measures rail head side of rail and rail foot is measured the distance for a little arriving sensor；Linear laser profile sensor is placed on rail head top, gathers rail tread curve；Multiple Spectral Confocal displacement sensors and multiple linear laser profile sensors are connected with data acquisition memory, and analyzing and processing obtains steel rail straightness and torsion resistance.Mainly using Spectral Confocal displacement sensor and linear laser profile sensor acquisition Rail Surface geometric parameter, the glacing flatness of rail and distortion degrees of data then is calculated by data analysis in the detection method of the present invention.
Description
Technical field
The present invention relates to rail automatic detection field more particularly to a kind of steel rail straightness and torsion resistance detection device and
Method.
Background technology
With the development of China express railway and Line for Passenger Transportation, the quality of gapless line increasingly draws attention.Rail is put down
Straight degree and torsion resistance are one of important indicators for weighing rail quality, directly affect the speed of service and comfort of train, seriously
When even entail dangers to traffic safety.It needs to be detected the shape of rail before rail welding, avoids underproof rail input life
Production, causes unnecessary loss, therefore need to develop high-precision steel rail straightness and torsion resistance detecting system gets over it to meet
Carry out higher requirement.
Wang Wang China et al. utilizes the laser range sensor of 16 same models, using contactless measurement completion pair
The on-line automatic measurement of rail profile physical dimension, steel rail straightness and torsion resistance, but this method is when calculating glacing flatness, only
The information of three sections can be gathered, it is impossible to which the fluctuating situation of entire rail in the range of scanning survey, result reliability is poor, simultaneously
Laser range sensor is easily influenced to cause measurement accuracy not high by light, rust staining etc..
Li Li et al. is also completed several to rail profile using multiple movable laser profile sensors and displacement sensor
Comprehensive automatic measurement of what size, steel rail straightness and torsion resistance, but this method when rail detects, it is necessary to which rail is transmitted
Stop line detection in rail end detection range, detection efficiency has much room for improvement.
Perhaps sea light et al. has invented a kind of rail flatness measuring instrument, mainly utilizes laser displacement sensor detection rail top
Face and the glacing flatness for surveying face.When detecting, straight-line motion mechanism is done reciprocal straight with laser displacement sensor along line slideway
Line moves, and the tested steel rail head working face of sensor scanning and rail side working face obtain rail after handling measured data
Glacing flatness.This method places laser displacement sensor in the unilateral of rail, but it is actually detected in, straight-line motion mechanism can not be kept away
The meeting exempted from is vibrated, and so as to which sensor be driven to vibrate together, can be led to the problem of sensor zero point offset, be caused unilateral measurement
Inaccuracy, while this method is also required to stop line detection, and detection efficiency also has much room for improvement.
Therefore, there are many problems for existing rail detection technique.
The content of the invention
Goal of the invention：In view of the above problems, the present invention proposes a kind of steel rail straightness and torsion resistance detection device and method.
Technical solution：Purpose to realize the present invention, the technical solution adopted in the present invention are：A kind of steel rail straightness and
Torsion resistance detection device, including multiple Spectral Confocal displacement sensors and multiple linear laser profile sensors；The spectrum is total to
Burnt displacement sensor is arranged symmetrically in rail head of rail both sides and rail foot both sides, measures rail head side of rail and rail foot quilt
Measurement point is to the distance of sensor；The linear laser profile sensor is placed on rail head top, and acquisition rail tread is bent
Line；The multiple Spectral Confocal displacement sensor and multiple linear laser profile sensors are connected with data acquisition memory, point
Analysis handles to obtain steel rail straightness and torsion resistance.
A kind of steel rail straightness and torsion resistance detection method, including step：
(1) a linear laser profile sensor is placed in rail head top, and it is symmetrically placed in rail foot both sides
Two Spectral Confocal displacement sensors, mutual angle are 90 degree；
(2) the linear laser sensor acquisition rail tread curve data, the Spectral Confocal displacement sensor acquisition
To flange of rail range data, the data for analyzing acquisition obtain the position of rail tread peak；
(3) when rail moves forward, sensor group collects a series of rail tread highest point datas, analyzes acquisition most
High point data obtains rail perpendicular straight degree.
A kind of steel rail straightness and torsion resistance detection method, including step：
(1) two Spectral Confocal displacement sensors, relative position d are arranged symmetrically in rail head of rail both sides；
(2) for real-time measurement sensor to distance d1, d2 for corresponding to rail both sides, the data for analyzing acquisition obtain rail side
To sensor distance ideal value d1 ', d2 '；
(3) when rail moves forward, sensor gathers and analyzes a series of d1 ', d2 ' data, analyze collect away from
The horizontal glacing flatness of rail is obtained from data.
A kind of steel rail straightness and torsion resistance detection method, including step：
(1) two sensors are set in rail foot, every group of sensor is included in symmetrically placed two of rail foot both sides
Spectral Confocal displacement sensor, mutual angle are 90 degree；
(2) position of four points P1, P2, P3, P4 of rail foot are measured；
(3) when rail moves forward, sensor gathers the volume of data of a point, is averaged；
(4) determine a plane with wherein three points, by analyzing the 4th point to the distance of the plane, obtain rail torsion
Curvature.
Multigroup sensor group is designed, improves accuracy of detection.
Advantageous effect：The present invention has the following advantages：(1) on-line real-time measuremen steel rail straightness and torsion resistance are realized,
Stop without rail, improve detection efficiency；(2) by matching placement sensor up and down, eliminate in rail operational process
Detection error caused by oscillation crosswise, extensional vibration, and solve the problems, such as rail unilateral side measurement in existing detection method, solve sensing
Device zero migration problem, improves accuracy of detection；(3) upper and lower sensor array is combined, it is ensured that detection point height keeps same water
Horizontal line meets national standard, it is ensured that horizontal glacing flatness detects the accurate of point height；(4) passed by using linear laser displacement
Sensor so that perpendicular straight degree test point can accurately measure rail tread midpoint, tread peak always；(5) this detection system
Operating temperature range of uniting is wide, environmental suitability is strong, to tested Rail Surface condition no requirement (NR), from electromagnetic interference influence.
Description of the drawings
Fig. 1 is testing principle schematic diagram of the present invention；
Fig. 2 is detection device overall layout chart of the present invention；
Fig. 3 is the sensor placement figure of rail perpendicular straight degree detection；
Fig. 4 is the sensor placement figure of the horizontal glacing flatness detection of rail；
Fig. 5 is the sensor placement figure of torsion resistance of steel rail detection.
Specific embodiment
Technical scheme is further described with reference to the accompanying drawings and examples.
It is steel rail straightness of the present invention and torsion resistance detection device as shown in Figure 1, including multiple Spectral Confocal positions
Displacement sensor and multiple linear laser profile sensors.Multiple Spectral Confocal displacement sensor G be placed on rail head of rail both sides with
And rail foot both sides are arranged symmetrically, for measure rail head side of rail and rail foot be measured a little to sensor away from
From；Multiple linear laser profile sensor X are placed on rail head top to gather rail tread curve.Multiple Spectral Confocal positions
Displacement sensor and multiple linear laser profile sensors are connected with data acquisition memory, so as to which the data collected be divided
Analysis handles to obtain the glacing flatness of rail and distortion degrees of data.
As shown in Fig. 2, the specific embodiment of the present invention, 3 linear laser profile sensings are equipped on rail top to be measured
Device, 7 pairs of Spectral Confocal displacement sensors are equipped in rail both sides to be measured, and 3 pairs of Spectral Confocal displacements are equipped in rail lower part to be measured
Sensor.
Detect the perpendicular straight degree of rail
Rail perpendicular straight degree refers to the heaving of the sea situation in rail driving face.It is multigroup linear by being placed on rail top
Laser profile sensor, real time scan movement rail tread, can collect rail tread curve and tread peak position；Simultaneously
In the lower section of rail, two rows of numbers Spectral Confocal displacement sensor identical with linear laser sensor is placed, the two cooperation makes
With eliminating the influence generated because of rail up-down vibration with this.By the multigroup tread peak position data collected into
Row analysis filters off machine vibration interference signal using wavelet algorithm, draws the perpendicular straight degree of rail.
As shown in figure 3, a linear laser profile sensor X1 is placed above end of rail section, and in end section
Lower section symmetrically placed two Spectral Confocal displacement sensors G11, G12, mutual angle is 90 degree, and makes its measurement point
The distance at center and flange of rail edge is 10 millimeters, and the two is used cooperatively, to eliminate the influence of rail up-down vibration.
Likewise, one group of biography similarly configured is respectively placed with rail afterbody section part at away from end of rail section 1m respectively
Sensor X2, G21, G23 and X3, G31, G32.
It is as follows that perpendicular straight degree measures specific processing mode：
(1) linear laser sensors X acquisition rail tread curve data, Spectral Confocal displacement sensor G gather it to rail
Bottom range data analyzes the data that the two collects, and finds the position of rail tread peak；
(2) when rail moves forward, every group of sensor can collect a series of rail tread highest point data, to every
The highest point data that group sensor collects is handled, you can obtains the rail perpendicular straight that each group sensor measurement obtains
Degree,
(3) three groups of sensors are designed, improve accuracy of measurement.
Detect the horizontal glacing flatness of rail
The horizontal glacing flatness of rail refers to the fluctuating situation of rail guide surface horizontal direction.It has been marked by being placed in rail both sides
Set relative position be d two rows of Spectral Confocal displacement sensors, distance d1, d2 of real-time measurement sensor to rail both sides,
Then the width of rail is d-d1-d2.By analyzing the data collected, and filter out machine vibration and rail or so
The interference model of swing, you can obtain the horizontal glacing flatness of rail.
Relative position has been demarcated as d's as shown in figure 4, being equipped at two lateral extent rail head peak 16mm of rail to be measured
7 pairs of Spectral Confocal displacement sensor R arrays.
The horizontal specific processing mode of flatness measurement is as follows：
(1) every sensor measures it and arrives distance d1, d2 of corresponding rail both sides, then the width of rail is d-d1-d2,
The data that the two collects are analyzed, the influence that percolator machine vibration interference and rail swing can obtain rail side
Face is to sensor distance ideal value d1 ', d2 '；
(2) when rail moves forward, each pair sensor can gather and analyze a series of d1 ', d2 ' data；
(3) range data collected to each pair sensor is handled, you can obtains what each group sensor measurement obtained
The horizontal glacing flatness of rail；
(4) 7 pairs of sensors are designed, accuracy of measurement can be improved.
In addition, using being detected simultaneously at left and right sides of two rows of sensors, the unilateral measurement of rail in existing detection method can be solved
Problem and sensor zero point offset problem, while side-to-side vibrations influence can be eliminated.
Detect the torsion resistance of rail
Torsion resistance of steel rail refers to the degreeof tortuosity of rail longitudinal direction.Multiple Spectral Confocal displacement sensings are placed in the lower section of rail
Device measures the position of four points of rail foot surface, and a plane is determined with wherein three points, flat to this by analyzing the 4th point
The distance analysis torsion resistance of steel rail in face；In addition the value of torsion resistance of steel rail by calculating cornerwise length, can be also obtained indirectly.
As shown in figure 5,3 pairs of Spectral Confocal displacement sensors are placed in the lower section of rail, with wherein 2 pairs of sensors can be complete
The measurement of paired torsion resistance of steel rail.
Specific embodiment is：Symmetrically placed two Spectral Confocal displacement sensors, phase below end of rail section
Angle is 90 degree between mutually, and the center of its measurement point and the distance at flange of rail edge is made to be 10 millimeters；Likewise, away from end
Other two symmetrically placed Spectral Confocal displacement sensor, such four sensors can measure below the rail profile that 1 meter of portion
The position of rail foot four points P1, P2, P3, P4.Because rail is online motion detection, therefore each sensor can gather
The position data of multiple points near point corresponding thereto, takes its average value, and such P1, P2, P3, P4 are institute's detection zone models
An interior compound average is enclosed, it is as a result more accurate.A plane is determined with wherein three points such as P1, P2, P3, passes through analysis the
Four point P4 are to the distance analysis torsion resistance of steel rail of the plane；In addition also steel can be obtained indirectly by calculating cornerwise length
The value of rail torsion resistance.
Claims (8)
1. a kind of steel rail straightness and torsion resistance detection device, it is characterised in that：Including multiple Spectral Confocal displacement sensors and
Multiple linear laser profile sensors；
The Spectral Confocal displacement sensor is arranged symmetrically in rail head of rail both sides and rail foot both sides, measurement rail head of rail side
Face and rail foot are measured the distance for a little arriving sensor；
The linear laser profile sensor is placed on rail head top, gathers rail tread curve；
The multiple Spectral Confocal displacement sensor and multiple linear laser profile sensors are connected with data acquisition memory, point
Analysis handles to obtain steel rail straightness and torsion resistance.
2. steel rail straightness according to claim 1 and torsion resistance detection device, it is characterised in that：Rail foot both sides
The mutual angle of Spectral Confocal displacement sensor is 90 degree.
3. a kind of steel rail straightness and torsion resistance detection method, it is characterised in that：Including step：
(1) a linear laser profile sensor is placed in rail head top, and symmetrically placed two in rail foot both sides
Spectral Confocal displacement sensor, mutual angle are 90 degree；
(2) the linear laser sensor acquisition rail tread curve data, the Spectral Confocal displacement sensor collect rail
Bottom range data, the data for analyzing acquisition obtain the position of rail tread peak；
(3) when rail moves forward, sensor group collects a series of rail tread highest point datas, analyzes the peak of acquisition
Data obtain rail perpendicular straight degree.
4. steel rail straightness according to claim 3 and torsion resistance detection method, it is characterised in that：Design multigroup sensor
Group improves accuracy of detection.
5. a kind of steel rail straightness and torsion resistance detection method, it is characterised in that：Including step：
(1) two Spectral Confocal displacement sensors, relative position d are arranged symmetrically in rail head of rail both sides；
(2) for real-time measurement sensor to distance d1, d2 of corresponding rail both sides, the data for analyzing acquisition obtain rail side to biography
Sensor is apart from ideal value d1 ', d2 '；
(3) when rail moves forward, sensor gathers and analyzes a series of d1 ', d2 ' data, analyzes the distance number collected
According to obtaining the horizontal glacing flatness of rail.
6. steel rail straightness according to claim 5 and torsion resistance detection method, it is characterised in that：Design multigroup sensor
Group improves accuracy of detection.
7. a kind of steel rail straightness and torsion resistance detection method, it is characterised in that：Including step：
(1) two sensors are set in rail foot, every group of sensor is included in symmetrically placed two spectrum in rail foot both sides
Confocal displacement sensor, mutual angle are 90 degree；
(2) position of four points P1, P2, P3, P4 of rail foot are measured；
(3) when rail moves forward, sensor gathers the volume of data of a point, is averaged；
(4) determine a plane with wherein three points, by analyzing the 4th point to the distance of the plane, obtain rail distortion
Degree.
8. steel rail straightness according to claim 7 and torsion resistance detection method, it is characterised in that：Design multigroup sensor
Group improves accuracy of detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363353.8A CN108106565A (en) | 2017-12-18 | 2017-12-18 | A kind of steel rail straightness and torsion resistance detection device and method |
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| CN201711363353.8A CN108106565A (en) | 2017-12-18 | 2017-12-18 | A kind of steel rail straightness and torsion resistance detection device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596075A (en) * | 2019-01-28 | 2019-04-09 | 天津市兆瑞测控技术有限公司 | A kind of straightness or curvature on-line measurement device and method |
| CN111256605A (en) * | 2020-02-11 | 2020-06-09 | 周海兵 | Automatic detection device and method for U-shaped copper pipe of air conditioner |
| EP3951313A1 (en) * | 2020-08-05 | 2022-02-09 | SMS Group GmbH | Straightness measurement of elongated workpieces in the metal-processing industry |
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| CN106546176A (en) * | 2015-09-21 | 2017-03-29 | 武汉汉宁科技有限公司 | A kind of rail outward appearance physical dimension and surface defect detection apparatus |
| CN206269787U (en) * | 2016-11-23 | 2017-06-20 | 武汉利德测控技术有限公司 | A kind of device for measuring end of rail flange of rail torsion resistance |
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| US4040738A (en) * | 1975-03-20 | 1977-08-09 | Gulton Industries, Inc. | Railroad track profile spacing and alignment apparatus |
| CN201746752U (en) * | 2010-08-31 | 2011-02-16 | 成都国铁精工科技有限责任公司 | Track detection device |
| CN102162768A (en) * | 2010-12-29 | 2011-08-24 | 中国计量学院 | Device for detecting performance of static pressure air flotation guide rail and using method of device |
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| CN203148402U (en) * | 2013-04-09 | 2013-08-21 | 秦培煜 | Dynamic flatness detection device for steel rail |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596075A (en) * | 2019-01-28 | 2019-04-09 | 天津市兆瑞测控技术有限公司 | A kind of straightness or curvature on-line measurement device and method |
| CN111256605A (en) * | 2020-02-11 | 2020-06-09 | 周海兵 | Automatic detection device and method for U-shaped copper pipe of air conditioner |
| EP3951313A1 (en) * | 2020-08-05 | 2022-02-09 | SMS Group GmbH | Straightness measurement of elongated workpieces in the metal-processing industry |
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