To provide a rolling wheel which can be made with a simple construction, and to prevent the rolling wheel from interfering with peripheral parts by keeping down the deformation of the rolling wheel expanding in the cross direction caused by receiving loads.
In a triangular crawler, a guide roller 10 constitutes the rolling wheel which directly guides the protruding portion of the crawler belt. In this guide roller 10, two discs 37 are welded on the center portion, and the discs extend diagonally from the welded portion at a predetermined width. Further, a pair of extended portions 10a are formed by bending both of the peripheral edges inward. The pair of extended portions 10a serve as the outer peripheral surface of the guide roller 10. The pair of extended portions 10a are opposed to each other at a predetermined distance such that a clearance G, which extends along the peripheral direction, is formed at the center of the outer peripheral surface. Also, plural apertures 10b are formed on the inner peripheral surface of the guide roller 10 along the peripheral direction. The discs 37 are joined such that the holes 10b are arranged in zigzag.
SHIBAZAKI SHUNICHI
AWAZU SHIGEO
KIMURA YOSHIMASA
TOYOTA MOTOR CORP