Method and apparatus for measuring longitudinal creep force between wheel and rail of railway vehicle

摘要

PROBLEM TO BE SOLVED: To make it possible to measure vertical creep force working on a contact portion between a wheel of a railway vehicle and a rail from a ground side.SOLUTION: Strain gauges 4A1, 4B1, 4A2, and 4B2 are pasted symmetrically forth and aft in a laid direction of a rail 1 on front and back surfaces of a web 1a in two positions P1, P2 which are each equally separated in the front and aft in a laid direction of a rail from an intermediate position Pc between adjacent sleepers 2 in a central position in height direction of the rail 1. A main stress or a main strain is measured by strain gauges 4A1, 4B1, 4A2, and 4B2 when a wheel 3 of the railway vehicle passes an intermediate position Pc. A difference of the measured main stress or the main strain is converted based on a relationship between weight of the wheel and the vertical creep force previously obtained and then the vertical creep force is obtained.EFFECT: Measured result is capable of timely feedback.SELECTED DRAWING: Figure 1