Load measurement method and apparatus, railcar provided with load measurement apparatus, and load management system

摘要

A load measurement method, for measuring the load applied to a rail from a wheel of a railcar, calculates the lateral force applied to the rail from each of the left and right wheels, on the basis of the axial force applied to an axle between the left and right wheels and the axial load applied to the axle bearing.

主权项

1. A load measurement method for measuring loads applied to rails from a pair of wheels of a railcar which includes the wheels, an axle supporting the wheels, a pair of bearings supporting the axle to be rotatable, and an axle box housing the bearings, the method comprising:
detecting, by a horizontal displacement detection sensor, a displacement of the axle in the longitudinal direction at the axle box or a displacement of the axle box in the longitudinal direction with respect to a truck frame; transforming, by a processor, each of values detected by the horizontal displacement detection sensor into respective axial loads; measuring an axial force applied to the axle in a longitudinal direction; and obtaining, by the processor, lateral forces applied to rails from the respective wheels by using the respective axial loads and the measured axial force.