STRAIGHT-THROUGH GRAIN HARVESTING COMBINE Russian patent published in 2015 - IPC A01D41/00 A01F7/06 A01F12/18 

FIELD: agriculture.

SUBSTANCE: straight-through grain harvesting combine comprises a header, a feed elevator, a threshing and separation unit, and an air blower. The threshing and separation unit is designed as the outer, middle and inner helical drums mounted coaxially with a gap. The outer drum is made along the perimeter of three or more variable-width bands folded in the vertical plane and interconnected in series. The middle drum is mounted of sections made of an even number of equilateral perforated triangles interconnected by lateral sides. The sections are interconnected by free third parts of the triangles to form a helical drum. Along the perimeter of the helical drum the broken right and left helical lines are located directed towards each other, with inner helical grooves. The inner drum is made in the form of a multi-sectional helical conical screening surface. The sections of the screening surface are made of alternately connected perforated equilateral and perforated isosceles triangles. The lateral sides of the perforated triangles are equal to each other. The bases of the isosceles perforated triangles are greater than the length of their lateral sides. The number of the perforated equilateral and perforated isosceles triangles makes an even number.

EFFECT: constructive implementation of the inner drum provides the axial movement of the stalked masses with the horizontal arrangement of the axis of rotation of the drum, which simplifies production and expands technological capabilities.

25 dwg