| 摘要 |
<p>A crop engaging device for conveying and/or treating crop comprises a support (8) and a plurality of crop engaging elements (10) extending outwardly from the base. The device may be a stationary array of elements (9) protruding into a crop flow (5), or a rotor (11,12) which may be driven to convey or retard crop, or may be freely rotating. The crop engaging elements may be outwardly extending fins (24), or transversely extending ribs (22), or discs (21) perpendicular to the axis of rotation. The crop engaging elements (10) may have specified yielding characterisics, being yieldable in a preferred direction and being yieldable predominantly at a region spaced from the outer tip. Each fin (24) may be inclined relative to the direction of crop flow to impart lateral movement to the crop. Two cooperating rotors (11,12) may have crop engaging elements (10,19,21) which intermesh so that ribs (23) or discs (21) on one rotor (12) press crop onto sharp tips of brushes (19) or fins (24) on the other rotor (11) to condition the crop. Transverse ribs (131,200) may be radially sprung to avoid damage. Outwardly extending fins (24) may have reclined, stepped profiles (36) to improve crop engagement and release.</p> |
