Research On The Detection Method Of Inspecting Instrument For Static Geometry Parameter Of Track

At present, China’s high-speed railway construction have been expanding, as a specialized track inspection instrument for the detection of track equipment, the use of even more extensive. But now there is no complete set of domestic and international, authoritative track inspection instrument detection scheme, a number of tracks used in the production line product inspection instrument without being more or less a problem of perceived user. For such a high-precision orbit testing work, as most in use and can not achieve orbit inspection instrument factory condition indicators, and therefore can not fully reflect the real test track ride. In this paper, track inspection detected on the basis of the establishment of data fields, track inspection detected the specific methods and detection tolerance indicators main research contents include:First, the establishment meter outdoor testing field track inspection and testing methods of the underlying database field. In the selected test sites along the track for CP III dimensional network construction and validation for accuracy, using total station, electronic level, electronic foot gauge measurement precision measuring instruments such as detection field orbital plane coordinate points, track top elevation, track gauge and level of geometric state parameters, and conduct precision analysis; measured by an arbitrary point corresponds to the center line mileage calculations and linear fitting data processing methods, making the track center line of each geometric designs mileage status parameters associated with, and thus establishment of rail track geometry inspection detected field status parameters underlying database.Second, research the instrument outdoor test track inspection contents and the corresponding detection methods. Among them, an outdoor test track inspection apparatus includes rail inspection instrument measured the orbital plane coordinates, track top elevation, gauge, level, track direction, height and distortions state track geometry parameters. For each of the parameters of the test are divided into internal and external accord accord accuracy detection accuracy testing. Which inner precision detection is performed by comparing repeated measurements of the same poor mileage implemented; detection accuracy is more in line outside the track inspection instrument measured the mileage at the state track geometry parameters and the calculated field is detected at the same mileage track geometry parameters of the reference state value of the difference to be achieved. Third, the reference track inspection detected various specification requirements Tolerance Index, based on the combination of high-speed railway track ride static acceptance criteria, and a large number of test statistics and analysis of experimental data, to meet testing standards and to consider the actual testing work can be greater probability by detecting the premise, to improve and supplement track inspection detected the requirements specification Tolerance Index.Fourth, the comprehensive outdoor track inspection instrument detection methods, the preparation of track inspection cytometry data processing software, in order to achieve an outdoor test track inspection instrument data processing procedures.