CN101929851A - Laser high precision and high speed detection apparatus for vertical smoothness of rail - Google Patents
Laser high precision and high speed detection apparatus for vertical smoothness of rail Download PDFInfo
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- CN101929851A CN101929851A CN2009100533359A CN200910053335A CN101929851A CN 101929851 A CN101929851 A CN 101929851A CN 2009100533359 A CN2009100533359 A CN 2009100533359A CN 200910053335 A CN200910053335 A CN 200910053335A CN 101929851 A CN101929851 A CN 101929851A
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Abstract
The invention relates to a laser high precision detection apparatus for vertical smoothness of a vehicle-mounted rail, which can detect the defect of the vertical height difference of the rail more than 0.2mm under the condition of middle high speed (40km/h to 200km/h) driving of a vehicle. The detection precision of the vertical smoothness of the rail reaches 0.0002. The detection of the vertical smoothness of the rail along the vehicle line is automatically finished without occupying a sun roof or disorganizing complex transportation orders both day and night.
Description
Technical field
The present invention is the vertical smooth-going degree laser high-precision checkout equipment of a kind of vehicle-mounted rail, can detect the defective of rail vertical drop greater than 0.2mm under vehicle high speed (40km/h to 200km/h) driving condition; The vertical smooth-going degree of rail detects accuracy of detection and reaches 0.2 ‰.
Background technology
The detection method of the vertical smooth-going degree of present known rail has following several: under available light, and according to the catoptrical difference of rail level, the smooth-going degree of manual evaluation; Detect smooth-going degree with portable checkout equipment; The checkout equipment that is installed on the hand push detection dolly detects smooth-going degree.The shortcoming of these three kinds of detection methods is that significantly efficient is low, the skylight time that needs train to stop transport, could detect, and sacrifice valuable movement capacity.The detection method that these are artificial can only be carried out point type and be detected, and is difficult to the rail of thousands of kilometers is carried out complete detection.
Summary of the invention
In order to overcome above-mentioned shortcoming, the present invention be installed in can the high speed driving inspection vehicle on, inspection vehicle and train marshalling list, the inspection vehicle vertical smooth-going degree of rail along the line detects automatically to be finished.
Technical scheme of the present invention is: in length is that 0.8m～2.0m is straight, the bottom of the metal support of rigidity, and the laser range finder that (comprises three) more than three is installed, and the detection side of laser range finder is to vertically downward.Metal support is installed at the bottom of the middle part car of inspection vehicle, the top of rail.When inspection vehicle is exercised, because inspection vehicle pitches, double swerve, vertical vibration, factors such as rail sedimentation, vertical vibration, distance between stadimeter and rail changes, if but the rail vertical direction under the car is smooth-going, the ratio of the data of stadimeter and stadimeter spacing is consistent; If irregularity, ratio can be inconsistent.Therefore can detect rail vertical drop peace compliance according to ratio.
Effect of the present invention
Do not take the skylight, day and night, do not upset under the situation of complicated transport order, the inspection vehicle vertical smooth-going degree of rail along the line detects automatically to be finished, and has saved the valuable skylight time, has improved rail transportation efficiency.
Description of drawings
The present invention is further described below in conjunction with Figure of description.
Data unit among the figure is CM, and only for explanation usefulness, Fig. 1, Fig. 2, Fig. 3 are schematic diagrams to data. The installation site of laser range finder, I shape metallic support as shown in Figure 1. At the bottom of the inspection vehicle middle vehicle directly over rail vertical along steel rail laying direction erector font metallic support, the equidistant installation in the bottom of metallic support three laser range finder L0, L1, L2, the laser aiming rail rail level of three laser range finders. Three laser range finders detect the height and distance ratio and are respectively K01, K12, K02, K01=(H1-H0)/D01, K12=(H2-H1)/D12, K02=(H2-H0)/(D01+D12), if T1 is constantly, the geometric position of laser range finder and rail as shown in Figure 1, K01==(25.000-25.000)/45.000=0 then, K12=(25.000-25.000)/45.000=0, K02=(25.000-25.000)/(45.000+45.000)=0. K01, K12, K02 three equate.
If T2 constantly, because inspection vehicle pitches, double swerve, vertical vibration, the factors such as rail sedimentation, vertical vibration, the geometric position of laser range finder and rail as shown in Figure 2, K01=(36.342-31.500)/45.000=0.107 then, K12=(41.184-36.342)/45.000=0.107, K02=(41.184-31.500)/(45.000+45.000)=0.107. Although variation has taken place in the numerical value of H0, H1, H2, still K01, K12, K02 three do not equate when the vertical smooth degree of rail changes.
If T3 constantly, the geometric position of laser range finder and rail as shown in Figure 3, the vertical direction difference in height appears in rail, K01=(40.541-37.500)/45.000=0.067 then, K12=(46.184-40.541)/45.000=0.125, K02=(46.184-37.500)/(45.000+45.000)=0.096. Because the variation of the vertical smooth degree of rail, K01, K12, K02 three are unequal.
This has just illustrated that no matter how the geometric position of laser range finder and rail changes, K01, K12, K02 three did not equate that the three is unequal during variation when the vertical smooth degree of rail and difference in height changed. When the range accuracy of laser range finder reaches 0.05mm, detect the rail vertical drop greater than the defective of 0.2mm; The vertical smooth degree of rail detects accuracy of detection and reaches 0.2 ‰.
Embodiment
Laser range finder inserts vehicle-mounted industrial control computer as primary instrument, and the TT﹠C software high speed acquisition is handled the range data of laser range finder to the rail surface, detects vertical smooth-going degree of rail and vertical drop.According to vehicle location data existing on the inspection vehicle, the ground point location of exceeding standard for generation vertical smooth-going degree of rail and vertical drop.
Claims (3)
1. the vertical smooth-going degree laser high-precision checkout equipment of vehicle-mounted rail is characterized in that: under vehicle high speed (40km/h to the 200km/h) driving condition, detect the defective of rail vertical drop greater than 0.2mm; The vertical smooth-going degree of rail detects accuracy of detection and reaches 0.2 ‰.
2. the vertical smooth-going degree laser high-precision checkout equipment of vehicle-mounted rail according to claim 1, it is characterized in that: at the bottom of the car of the inspection vehicle above rail middle part, (comprise three) more than three laser range finder, the laser alignment rail rail level of laser range finder is installed along the steel rail laying direction.
3. the vertical smooth-going degree laser high-precision checkout equipment of vehicle-mounted rail according to claim 1, it is characterized in that: laser range finder is as the primary instrument of truck-mounted computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100533359A CN101929851A (en) | 2009-06-18 | 2009-06-18 | Laser high precision and high speed detection apparatus for vertical smoothness of rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100533359A CN101929851A (en) | 2009-06-18 | 2009-06-18 | Laser high precision and high speed detection apparatus for vertical smoothness of rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101929851A true CN101929851A (en) | 2010-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100533359A Pending CN101929851A (en) | 2009-06-18 | 2009-06-18 | Laser high precision and high speed detection apparatus for vertical smoothness of rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101929851A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607467A (en) * | 2012-03-07 | 2012-07-25 | 上海交通大学 | Device and method for detecting elevator guide rail perpendicularity based on visual measurement |
| CN102679903A (en) * | 2012-06-05 | 2012-09-19 | 中铁六局集团有限公司 | System for measuring bridge bottom deformation by aid of laser ranging method |
| CN105157624A (en) * | 2015-05-20 | 2015-12-16 | 湖南大学 | Combined chord measurement method for longitudinal irregularity of steel rail |
-
2009
- 2009-06-18 CN CN2009100533359A patent/CN101929851A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607467A (en) * | 2012-03-07 | 2012-07-25 | 上海交通大学 | Device and method for detecting elevator guide rail perpendicularity based on visual measurement |
| CN102679903A (en) * | 2012-06-05 | 2012-09-19 | 中铁六局集团有限公司 | System for measuring bridge bottom deformation by aid of laser ranging method |
| CN105157624A (en) * | 2015-05-20 | 2015-12-16 | 湖南大学 | Combined chord measurement method for longitudinal irregularity of steel rail |
| CN105157624B (en) * | 2015-05-20 | 2017-11-03 | 湖南大学 | A kind of compound chord measurement for being used to measure the longitudinal longitudinal irregularity of rail |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101229 |