COMBINED HARVESTER Russian patent published in 2013 - IPC A01D41/00 A01F7/06 A01F12/18 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery industry. The combined harvester comprises a header, a crop feed elevator, a threshing and separation unit with the receiving helical device, and a blower. The threshing and separation unit is made in the form of outer, middle and inner helical drums coaxially mounted with a clearance. The outer drum is made along the perimetre of three or more variable-area stripes folded in the vertical plane and interconnected in series. The middle drum is mounted of sections made of an even number of equilateral triangles interconnected with their lateral sides. The sections are interconnected by free third sides of the triangles to form the helical drum. Along the perimetre of the helical drum the directed towards each other broken right and left helices with internal helical grooves are located. The inner drum is mounted of at least one bent perforated stripe folded into cylindrical coils to form perforated pockets of polygonal shape.

EFFECT: combined harvester has high performance due to regular lengthwise movement of the stalked mass in the inner drum of the threshing and separation unit.

27 dwg