| 摘要 |
PROBLEM TO BE SOLVED: To prevent falling and track deviation of a railway rolling stock without increasing the number of components. SOLUTION: The railway rolling stock is equipped with a pair of wheels rotating on rails, an axle for supporting a pair of the wheels, and a pair of guide disks mounted to the axle inside a pair of the wheels so as to have equal spaces to a pair of the respective wheels. Diameter of a pair of the guide disks is set to have a length at which the rail could contact an end part of the guide disk when a pair of the wheels derail from the rails. COPYRIGHT: (C)2006,JPO&NCIPI
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