A reliability evaluation test-bed for on-board detection system of track state

Abstract

The invention discloses a reliability evaluation test bench for a vehicle-mounted detection system for track status, which includes a railway track for testing. The common defects and diseases on actual lines are simulated on the railway track, including local defects on the rail surface and between rails. Under-rail failure, defect, rail wear, and track geometric irregularity are four track state simulation units. The line geometry irregularity track state simulation unit is combined with other units to simulate different track states. The track state on-board detection system is installed on the test bogie, and the test bogie runs on the test bench under the traction of the driving device, and forms a closed-loop system under the action of the recovery wheel. Through the detection, data collection and information processing of the track state on-board detection system, the detection of the track state is obtained, and compared with the set track state, to evaluate the reliability of the track state on-board detection system when the bogie is running at low speed. The detection and maintenance of the line and the safe operation of the train are of great significance.

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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