GRAIN HARVESTER SCRAPER ELEVATOR Russian patent published in 1998 - IPC

FIELD: agricultural engineering; scraper conveyers for grain harvesters and other industries. SUBSTANCE: scraper elevator of grain harvester has rectangular chute divided lengthwise by partition into two spaces. Lower and upper heads of elevator are connected to ends of chute. Discharge port is made in upper head. Feeder screw rotates on bearing in lower head. Feeder screw is arranged in casing and is connected with lower head through neck. Driving sprocket is secured on feeder screw shaft. driving sprocket is displaced from longitudinal axis of symmetry to side of chute side wall opposite to charging zone. Tension sprocket is mounted with displacement from longitudinal axis of symmetry, the same as driving sprocket, also on axle rotating in bearings. Endless traction chain is stretched between the sprockets. Scrapers are connected to lugs of special chain links at angle α < 90^° relative to longitudinal axial line of chain. EFFECT: enlarged operating capabilities. 2 dwg