| 摘要 |
<p>A combine harvester includes a threshing unit, a pair of transverse contra-rotating distributor augers (11) located downstream of the threshing unit with respect to the direction of flow of the product and arranged to receive the product leaving the threshing unit and discharge it downwardly for distribution over the entire width of the harvester, an accelerator roller (14) located below the two distributor augers (11) for accelerating the fall of the product, a substantially vertical fixed wall (17) adjacent the accelerator roller (14) and cooperating therewith to accelerate the product, and a cleaning unit located below the accelerator roller (14) and including at least one fan for directing a current of air at the product accelerated by the accelerator roller (14). The substantially vertical wall (17) adjacent the accelerator roller (14) has a rough hull surface.</p> |
