High-speed train wheel track contact stress test bench

Abstract

The invention discloses a high-speed train wheel track contact stress test bench. A rack of the test bench is provided with a left wheel carrier and a right wheel carrier for mounting a wheel set; the wheel axle of the wheel set is mounted on the left and right wheel carriers through bearings; the left end of the wheel axle is also connected with an output shaft of a speed reducer through a dynamic load clutch; an input shaft of the speed reducer is connected with a drive motor shaft through a coupling; the right end of the wheel axle is connected with an output shaft of a static load servo motor through a static load clutch; the static load servo motor is mounted on the rack through a servo motor frame; a strain detection device is mounted on the wheel set and connected with a wireless transmission device; a signal sent by the wireless transmission device is received and processed by a data processing device. The test bench can more truly simulate the stress generated by the train wheel set in the working condition of high-speed rotation, ensures more accurate, complete and correct monitoring results, and provides more reliable experimental data for the improvement of safety and comfort of train operation.

Description

technical field [0001] The invention relates to a stress testing device for a wheel-rail contact state of a train, in particular to a wheel-rail contact stress test bench for a high-speed train. Background technique [0002] During the operation of a high-speed train, the contact state of the wheel and rail affects the comfort and safety of the train. Therefore, it is necessary to carry out the wheel-rail contact test on the train. Since the wheel set is mainly subjected to radial and axial forces when it is in contact with the track, the wheel-rail test mainly detects the radial and axial stresses on the wheel set during operation by installing a stress sensor on the wheel set. Comparing it with the limit value of the stress it can withstand, so as to determine the safe operation of the train speed and the size of the load that the wheelset can bear, so as to solve the safety problem of train operation. At the same time, performance characteristics such as the modal vibra...

AI Technical Summary

Problems solved by technology

[0004] Its disadvantages are: during detection, the wheelset is in a static state during the detection process, which is inconsistent with the actual working state of the wheelset, especially with the wheel-rail contact state when the high-speed train is running, and cannot meet the requirements of high-speed train operation. Under the circumstances, the monitoring of the safety status of train operation

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