| 摘要 |
A silo unloader for comminuting and gathering silage from a bunk silo detachably connects to the forward end of a hydraulically operated agricultural vehicle. The silo unloader is also hydraulically operated via controls in the vehicle cab and includes a cylindrical drum rotatably carried between a pair of vertically oriented screw jacks. A pair of circular cutting teeth are positioned at either end of the drum and are rotatable therewith. The screw jacks are operable to rotate in synchronous and alternating directions with the drum being attached thereto via a pair of nut elements which are threadedly engaged to the screw jacks. As the screw jacks rotate in the clockwise and counter-clockwise directions, the nut elements and the drum travel downwardly and upwardly thereon, respectively.
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