| 摘要 |
PURPOSE:To protect a tractor from sinking into a wetland by providing, on the rear end of a shoe in the longitudinal direction, a raised section for decreasing a gap which is generated between the shoe and a shoe adjacent thereto. CONSTITUTION:On the rear end of a shoe 2 is provided a raised section 22 in such a manner that, when the shoe 2 is attached to each link of a track chain, a gap between the shoe 2 and a shoe adjacent thereto is reduced. When the track chain is travelling, as to the grounding side shoes, the raised section 22 provided on the rear end of one of the adjacent shoes 2 is extended to the front end of the other, and accordingly, a gap between the two shoes is reduced so that sediment can be prevented to enter into the track chain through the gap.
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