| 摘要 |
PROBLEM TO BE SOLVED: To aim at the improvement of cost with the reduction in number of components by simplifying the folding structure of extended ground-leveling bodies. SOLUTION: This rotary tiller including a main cover 11 for covering the upper side of tilling claws 8, a rear cover 13 pivoted at the rear end of the main cover 11 as vertically freely rotatable, and extended ground-leveling bodies 17L, 17R attached to a ground-leveling body attached to the rear cover 13 or the rear end of the rear cover 13, as freely foldable is provided by installing/fixing brackets 18 at the right and left both ends of the ground-leveling body attached to the rear cover 13 or the rear end of the rear cover 13 to pivot the extended ground-leveling bodies 17L, 17R as freely rotatable, also installing as extending springs 16 over pins 25 installed as fixed on the brackets 18 and the extended ground-leveling bodies 17L, 17R to make the extended ground-leveling bodies 17L, 17R as capable of freely switching to a working posture B and a housed posture A, and further in the housed posture A, constituting so that the base part 21 of the extended ground-leveling bodies 17L, 17R is positioned at the housed posture A by making a contact with the pins 25. COPYRIGHT: (C)2011,JPO&INPIT
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