| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a structure for supporting a front transparent plate and an outer roof by a front beam so as not to disturb the front view in a driving cabin of a tractor. SOLUTION: A front beam 22 is provided with a flat part 22a having the thick direction in the vertical direction of a cabin, and reinforcement rib parts 22b, 22c, and is formed by a bent sheet metal having a length L in the front-to- back direction of the cabin, larger than a length H in the vertical direction of the cabin. An upper side edge part 15b of the front transparent plate 15 and a front side edge part 31a of the outer roof 31 are connected to a cabin outer side face 22d of the flat part 22a of the front beam 22.
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