| 摘要 |
PROBLEM TO BE SOLVED: To provide a crawler travel device that can prevent a sideslip of its crawler belt via a simple structure. SOLUTION: The crawler travel device is so designed that the foremost and backmost tread track rollers 2 and 4 are middle track rollers sandwiched between right and left projections 8 formed on the internal surface of a crawler belt 7, and that the other tread track rollers 3 and 13 are outer track rollers that hold only either of the right and left projections 8 in stagger fashion.
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