| 摘要 |
PROBLEM TO BE SOLVED: To widen the visual field in front of an operator and to prevent a contact with a tunnel apt to occur in returning to the shed. SOLUTION: An operator sits on an operation seat 28 on a lowered floor body 23, extends a raising/lowering cylinder so as to raise the floor body 23, draws a control box 25 and an steering handle 27 near in front of himself to drive, and spreads paving materials Ha, Hb by spreading screws 5, 7 to level them by screeds 8, 9. Because the operation seat 28 is raised high, the fine visual field is provided in front of the operator. The floor body 23 is lowered in returning to the shed so as to prevent the contact with a low tunnel.
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