A Dynamic Control Methods of Railway Bogie for Reducing Derailment by Flange Wear in Curve

초록

One of the main reasons of derailment of railway vehicle is flange wear. When the flange is worn the vehicle is able to climb the rail in curve and derail. Also, the wheel of vehicle can tear the turnout of rail due to sharp flange by wear. But, the maintenance criteria for flange wear are different from operator to operator. The best method for reducing derailment by flange wear in curve is to prevent the contact between wheel flange and rail side. Then, the lateral force between wheel and rail in curve is reduced like straight line. In this paper, the active steering control mechanism to reduce the lateral force was studied and the lateral force and steering performance was estimated by computer simulation. In order to verify the performance of the proposed active steering mechanism, 1/5-scale vehicle model and curved track were manufactured. According to the test by using 1/5-scale model, the proposed mechanism has a good performance for curve negotiation. The active steering bogie is able to prevent the derailment by flange wear and reduce the wear of wheel flange, rail side and curving noise.