| 摘要 |
OBJECT To operate a tread surface cleaning system only when passing through a curved section. A steering truck 11 is designed to make it possible to steer a wheel axle 2 of a truck. MEANS A tread surface cleaning system having a cleaning element 12a mounted to a truck frame 1 of a steering truck 11 in a position facing a tread surface 2aa of a wheel 2a, the cleaning element 12a moving freely to come into contact with and to move away from the tread surface 2aa; a pressing-load application spring 12c which presses on the cleaning element 12a biased toward the tread surface 2aa; and a stopper 12d for restraining the cleaning element 12a from approaching the tread surface 2aa, which utilizes a forward and backward movement of a wheel axle 2 in the travel direction caused by steering, so that the cleaning element 12a makes contact only on the inner rail side toward which the tread surface 2aa of the wheel 2a approaches when passing through a curved section, whereas the cleaning element 12a does not make contact on the outer rail side from which the tread surface 2aa of the wheel 2a moves away when passing through a curved section and when traveling through a straight section. Wear on the cleaning element can be reduced, because only a cleaning element on the inner rail side toward which the wheel tread surface approaches comes into contact with the wheel tread surface when passing through a curved section. |
