Track state vehicle-mounted detection system reliability evaluation test bed

Abstract

The invention discloses a track state vehicle-mounted detection system reliability evaluation test bed, which comprises a railway track for testing, common defects and diseases on a real line are simulated on the railway track, and four track state simulation units including a track surface simulation unit, an inter-track local defect simulation unit, a sub-track failure simulation unit, a defect simulation unit, a steel rail abrasion simulation unit and a line geometric irregularity simulation unit are included. The four simulation units can be freely combined to simulate different real track states. A to-be-evaluated track state vehicle-mounted detection system is installed on the test bogie, the test bogie runs on the test bench under the traction of the driving device, and a closed-loop system is formed under the action of the recovery wheel. The detection condition of the track state is obtained through detection, data acquisition and information processing of the track state vehicle-mounted detection system, and the detection condition is compared with the set track state, so that the reliability of the track state vehicle-mounted detection system during low-speed operation of the bogie is evaluated. The method is of great significance to detection and maintenance of lines and safe operation of trains.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a reliability evaluation test bed for a rail state on-board detection system. Background technique [0002] With the high-speed passenger transport and heavy freight transport of modern railway trains, the dynamics of the railway wheel-rail system has become more prominent, which has higher and higher requirements for the quality of the line state. During the construction and long-term service of the line, the defects and diseases of the track will become more serious with the continuous increase of the speed of the high-speed train and the continuous increase of the axle load of the heavy-duty train, which will deteriorate the wheel-rail relationship and affect the train. operating performance. Defects and diseases of the track will limit the speed of the train if it is light, and cause major accidents such as train derailment and overturning if it is serious. ...

AI Technical Summary

Problems solved by technology

Although this test method can detect the track status of real vehicles and real lines, it is difficult to carry out a large number of targeted tests because the defects and diseases of the track on the actual line are often not concentrated, the cycle is long, the cost is high, and the cost is high.

[0005] 2. Scale model test: The limitation of using scale model test is that the on-board detection system of track state cannot be accurately arranged on the test bogie, which may affect the accuracy of detection

Moreover, for the simulation of some track defects, it is difficult to implement, and the detection results have yet to be verified

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