궤간가변 화차용 대차의 주행동특성 시험 연구

In order to operate on the railways with different rail-gauges, gauge-changeable trains can be used. The running gear should be so designed that gauge-changeable trains run safely in all operating conditions. Running safety is related to the track condition and the vehicle dynamic characteristics which is investigated with testing the critical speed. In this paper, the dynamic characteristics of the gauge-changeable bogie for freight wagons was tested with the roller rig tester in running speeds of up to 200 km/h. The displacement and acceleration of components of bogie and body were measured when the tested car ran on each track condition of standard gauge (1435) and broad gauge (1520 mm). It could be found that the critical speed of bogie is more than 200 km/h in the tested condition.