The Selection of the Gear Ratio Brake Linkage of Passenger and Freight Cars Maximum Allowable Friction Wheel Rail

Abstract

The authors have constructed nomographs of dependence of the gear ratio of a lever-type braking gear on the tare of passenger and freight cars according to the calculated limit coefficient of wheel/rail clutch. It has been shown that for passenger cars with the tare of 53 to 57 ton-force, at a gear ratio 5.3, the 15% skidding reserve in the speed range of 90 to 160 km/h is not maintained. For freight cars with the tare up to 22 ton-force, at a gear ratio 5.72, the basic condition of absence of skidding is not maintained either.