| 摘要 |
PROBLEM TO BE SOLVED: To provide a working machine which is used to allow not manual but mechanical performance of work for correcting a shape of a collapsed ditch and the like, because a ditch side wall sometimes collapses so as to cause damage to the shape and depth of the ditch, in a crossing part during work for the checkered drain ditch applied to the field so as to accelerate drainage of the field. SOLUTION: This working machine, which is provided in a rotary type drain- ditch forming working machine for forming the drain ditch by means of a rotary rotor, is given a ditch dredging function of being movable in a direction approximately perpendicular to the ditch formed by the rotary type drain-ditch forming working machine. Characteristically, the working machine, which is mounted on a frame, is constituted in a state of being wholly ascendable/ descendable with a group of endlessly moving ditch dredging blades, a driving system for driving the group of the ditch dredging blades, and the frame, so that a part crossing a main ditch can be corrected. COPYRIGHT: (C)2003,JPO
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