| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable selection of vibratory drive of a vibrating fall auxiliary plate provided in the rear end of a digging-out blade body of a yam digging-out device in conformity to a soil condition that a conventional common soil is mixed up with a sandy soil layer, etc., even in one field in harvest fields of yams.SOLUTION: A yam digging-out device is characterized by excavating both sides of a grown yam and performing deep tillage to the lower end of the yam, and further making the yam move up with cultivation soil sequentially by the digging blade body with the rear inclined to the above and moved to the rear for harvesting. A vibrating device of a digging-out body of a yam harvester connected to a tractor is provided which is characterized in that: a fall auxiliary plate finely vibrating on the same plane with the digging-out blade body is provided at the rear end of the digging-out blade body; a clutch for separating power is provided at an intermediate point of vibratory drive means of this fall auxiliary plate to select the vibratory drive of the fall auxiliary plate according to a soil state of the field where the yams are grown; and a supporting worker of extracting the moved-up yams can operate a clutch while looking at the soil state.</p> |
