Vehicle-track-bridge coupling vibration test platform

Abstract

The invention discloses a vehicle-track-bridge coupling vibration test platform, which comprises an F track, a plurality of sleepers, a sleeper bracket, a suspension frame, a carriage simulation unitand a plurality of sets of frequency adjustment assemblies. The F track is arranged on a plurality of sleepers which are arranged in parallel at intervals; one end, far away from the F track, of eachsleeper is mounted on the sleeper bracket through a sleeper connecting seat; the end, close to the F track, of each sleeper is installed on the sleeper bracket through one detachable frequency adjusting assembly, and the inherent frequency of the whole test platform is changed by replacing different frequency adjusting assemblies. The suspension frame is installed on the F track, the suspension frame is connected with the carriage simulation unit through an air spring, and the carriage simulation unit is used for simulating the carriage stress. The inherent frequency of the whole test platformis changed by replacing the adjusting assemblies with different frequencies, the sleeper and F track strength in different states can be tested in different states; the carriage stress is simulated through the carriage simulation unit, and the stress conditions of a track and a maglev train can be tested more comprehensively.

Description

technical field [0001] The invention relates to the field of vehicle-rail coupling vibration tests of maglev trains, in particular to a vehicle-rail-bridge coupling vibration test platform. Background technique [0002] During the operation of the maglev train, the natural frequencies of different track sections are different, which leads to changes in the suspension performance, and even causes vehicle-rail coupling vibration. In order to study the vibration characteristics of the maglev system under different tracks, and to study the method of suppressing the vibration, the present invention designs a vehicle-rail coupling vibration test platform. One of the functions of the vehicle-track-bridge coupled vibration test platform is to model, analyze and verify the coupled vibration of the maglev track. The excitation force is applied to the track through the excitation system, and various loads and disturbances of the line can be simulated to test the suspension frame. The ...

AI Technical Summary

Problems solved by technology

However, the natural frequency of the conventional vehicle-rail-bridge coupling vibration test platform is not adjustable, and it is impossible to carry out track vibration tests at different frequencies, and lacks the simulation of the vibration feedback force of the carriage to the suspension frame, which is not comprehensive enough for the coupling vibration test of the suspension frame.

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