| 摘要 |
PROBLEM TO BE SOLVED: To provide a crawler travel device having a rolling wheel separable into an inner diameter section and an outer diameter section with a compact size and light weight and having strong connection strength between the inner diameter section and the outer diameter section.SOLUTION: A crawler travel device comprises: a drive wheel which is supported on a traveling machine body and into which driving force is input; a track frame 4 supported on the traveling machine body; a shaft member 9 rotatably supported on the track frame 4; a rolling wheel 1 which is connected to the shaft member 9 and is rotated integrally with the shaft member 9; and a crawler belt 7 wound and extended around the drive wheel and the rolling wheel 1. The rolling wheel 1 can be separated into an inner diameter section 101 connected to an end of the shaft member 9 and an outer diameter section 102 connected to be detachable from the inner diameter section 101. In the inner diameter section 101, a large diameter section 105 and a small diameter section 106 are formed in a step shape along an axial direction of the shaft member 9. In the outer diameter section 102, a large diameter recess 107 into which the large diameter section 105 is fitted and a small diameter recess 108 into which the small diameter section 106 is fitted are formed in a step shape. |
