HARVESTER-THRESHER Russian patent published in 2012 - IPC A01D41/00 A01F7/06 

FIELD: agricultural engineering.

SUBSTANCE: invention refers to agricultural engineering. The in-line harvester-thresher includes a windrower, a crop feed elevator, a separating unit, and an air-moving device. The separating unit is made in the form of the gapped external, medium and internal screw rotors installed coaxially. On its perimeter the external rotor is made of three or more punched stripes of variable width that are rolled in the vertical plane and connected in sequence to each other. The medium rotor is assembled of the units formed by the even number of equilateral triangles touching each other along the lateral sides. The sections are connected to each other by the free third sides of the triangles thus forming a screw rotor. On the screw rotor perimeter the zigzag right and left helical curves with internal helical grooves are situated. These curves are directed towards each other. The internal rotor is made in the form of a multiple-thread grid surface assembled of at least one lateral solid bar. The solid bar is deflected thus causing alternate triangular bulges and hollows and is twisted in spiral curves. The lateral bars preliminarily twisted are fixed in the hollows or both in the hollows and bulges.

EFFECT: increase in the capacity of the machine.

2 cl, 30 dwg