Load measurement method and apparatus, railcar provided with load measurement apparatus, and load management system
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorYoshi Sato
Life of this patent
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Abstract
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.
Claims10
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 and a pair of bearings supporting the axle to be rotatable, the method comprising:
- measuring axial loads applied to the respective bearings;
- measuring an axial force applied to the axle in an longitudinal direction;
- and
- obtaining lateral forces applied to rails from the respective wheels by using the measured axial loads and the measured axial force.
A load measurement apparatus for measuring loads applied to rails from a pair of wheels of a railcar which includes the wheels, an axle supporting the wheels and a pair of bearings supporting the axle to be rotatable, the apparatus comprising:
- an axial load measurement unit configured to measure each of axial loads applied to the respective bearings;
- an axial force measurement unit configured to measure an axial force applied to the axle in an longitudinal direction;
- and
- a processor configured to obtain each of lateral forces applied to the rails from the wheels by using the measured axial loads and the axial force.
A load management system configured to manage loads applied to rails from a pair of wheels of a railcar including the wheels, an axle supporting the wheels, and a pair of bearings supporting the axle to be rotatable, the system comprising:
- an axial load measurement unit configured to measure each of axial loads applied to the respective bearings;
- an axial force measurement unit configured to measure an axial force applied to the axle in an longitudinal direction;
- a processor configured to obtain each of lateral forces applied to the rails from the wheels by using the measured axial loads and the axial force;
- a storage unit configured to store lateral force information indicating the lateral forces obtained by the processor, and at least one of time information, track information and traffic data, which correspond to the obtained lateral force;
- and
- an analyzing unit configured to obtain a change over time of the lateral force information based on each of the information pieces stored in the storage unit.
Dependencies are inferred from the claim text.