| 摘要 |
PROBLEM TO BE SOLVED: To provide a crawler type working vehicle which is fuel-efficient since the reduction of the cross section area of a track roller shaft can be suppressed and it is not necessary to increase the diameter of the track roller shaft. SOLUTION: The crawler type working vehicle is equipped with a traveling crawler, a track roller, a track roller shaft, and a nut. The nut is tapered one, and a pressure welding part pressure-welding the tapered part of the tapered nut is provided at the centrifugal part of the track roller. COPYRIGHT: (C)2007,JPO&INPIT
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