| 摘要 |
<p>An infeed assembly for a rotary combine has an impeller (30) for directing crop materials outwardly and rearwardly. The impeller is arranged on the infeed section (62) of the rotor and includes impeller blades (32) that redirect the incoming mat-like crop materials into a whirling, circulatory motion and also translates the crop materials rearward towards the rotor's threshing section (64). Each blade has a leading edge (35) that is swept back in two dimensions. Each leading edge is simultaneously swept back circumferentially away from the direction of impeller rotation and axially towards the rotor's threshing section. The pitch of each blade increases for a predetermined distance rearwardly.</p> |
