GRAIN COMBINE Russian patent published in 1996 - IPC

FIELD: agricultural engineering, in particular, separate harvesting of ears and stalks. SUBSTANCE: combine has casing, winder with reverse rotation drive, pneumatic stalk lifter, upper and lower horizontal cutterbars, each formed as screw-type blade with center-oriented coils and trough positioned below blade, fingers positioned adjacent to forward side of trough relative to combine travel direction. Trough rear side is connected to rear casing. Combine is further provided with two threshing drums, with one threshing drum positioned adjacent to upper cutterbar being formed as auger narrowing toward center and other threshing drum formed as auger with right-hand oriented coils. Pneumatic conveyors positioned at right and left sides of threshing drums are formed as two impellers defining channel connected with cleaning system. Straw separator is positioned within this channel. Two vertical impellers are mounted between right-hand conveyor and outer auger coil of threshing drum. Separating board is mounted within casing of upper impeller, which is provided with window. Pneumatic lifter of upper cutterbar has channels made in concave and casing above threshing drum and pneumatic lifter of lower cutterbar has channels made in casing bottom. Channels of upper cutterbar are connected through flexible hose with right-hand conveyor and channels of lower cutterbar with left-hand conveyor. Straw separator has horizontal rolls with working members and shafts perpendicular to that of threshing drum. Net belt conveyor is mounted below working members for rotation in direction coinciding with that of working members. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 7 cl, 2 dwg