SAFETY DEVICE FOR BANKING VEHICLES

摘要

A safety device for banking vehicles, specifically for high speed banking railway passenger cars, in which the vehicle body is mounted on a bolster which is tilted relative to its supporting frame for banking purposes. The safety device consists of a spring-actuated ram carried by the frame which is operative on the bolster upon failure of the banking motors and/or upon the presence or detection of any other potentially unsafe condition to centre the bolster to a neutral position and maintain the car upright. The ram is held against such operation by motors fed from the same power source as that supplying the banking motors. The motors holding the ram against operation may be double-acting hydraulic motors that, upon releasing the ram, become "locked-up" in the released condition and act as struts maintaining the bolster in the said neutral position.