| 摘要 |
<p>A combine harvester I0 comprises separating apparatus 32, 36 arranged to convey a threshed crop stream in a rearward direction. Both the threshing unit and separating apparatus allow grain and chaff to fall under gravity onto an underlying thresher pan 28 and separator pan 44 respectively. The thresher pan is driven in an oscillating manner to convey a primary grain/chaff stream rearwardly to a rear edge 49 from where the primary grain/chaff stream falls under gravity into a cleaning unit 48. The separator pan is also driven in an oscillating manner to convey a secondary grain/chaff stream forwardly to a front edge from where the secondary grain/chaff stream falls under gravity to combine with the primary grain/chaff stream. The separator pan front edge is disposed forwardly of the thresher pan rear edge by an overlap distance such that the secondary grain/chaff stream falls onto the thresher pan and stratifies before falling off the rear edge thereof.</p> |
