| 摘要 |
An infeed assembly for an axial-flow combine arranged at a forward end of a rotor which is mounted within a casing defining a transition section at a forward end thereof. The transition section has a series of spiral transport vanes on an inner surface thereof. The infeed assembly is comprised of a series of equally spaced blades. Each blade has a leading edge, an outer edge, and a material engaging surface. The leading edge of the blade, which is peripherally rounded, is swept back relative to the given direction of rotor rotation. The outer blade edge extends from the leading edge and angles relative to the transport vanes in varying degrees as the blade extends rearwardly from the leading edge. The material engaging surface of the blade has a generally concave shaped section extending axially rearward from the leading edge of the blade and which extends into a relatively flat shape section. The curved concave and flattened sections of each impeller blade have cross-sectional profiled configurations lying on planes extending normal to the rotational axis of the rotor and which are incrementally swept back at substantially the same angle of crop deflection as the leading edge of the blade. Anti-wrap mechanism provided at a forward end of the rotor inhibits crop material from winding about the rotor.
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