COMBINE HARVESTER Russian patent published in 2022 - IPC A01D41/12 A01F12/44 

FIELD: agriculture.

SUBSTANCE: combine harvester comprises a retractive apparatus for collecting the harvested crops from the field, a threshing apparatus for separating the grains from the harvested crops, thereby creating a first part of the harvested crops containing primarily grain and a second part of the harvested crops containing primarily straw. The threshing apparatus is followed by a cleaning apparatus for separating the harvested crops and thereby separating the grain from non-grain components. The cleaning apparatus comprises a sifting apparatus configured to rotate around an axis of rotation and containing an at least partially sieve-like shell passing in a circumferential direction around the axis of rotation. The sieve-like shell is at least partially essentially shaped like a cone, a truncated cone, a pyramid, or a truncated pyramid, wherein the shell is tapered toward the lower end thereof. Separation is provided by applying rotational motion and oscillatory motion of the sieve-like shell so that the oscillatory motion is directed transversely to the axis of rotation of the sieving apparatus. The axis of rotation of the sieving apparatus passes in the direction of gravity or is inclined relative to the direction of gravity.

EFFECT: efficiency of cleaning the threshed harvested crops is optimised.

16 cl, 6 dwg