MECHANISM OF CLEANING OF GRAIN COMBINE HARVESTER Russian patent published in 2013 - IPC A01F12/44 A01D41/12 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery industry. The mechanism of cleaning of grain combine harvester comprises transition grate 1, the upper and lower sieve boots 2, drive shaft 3, connecting rods 6, 7 and fingers 8, 9. The upper and lower sieve boots 2 are rigidly interconnected. The drive shaft 3 has two pairs of cranks 4 and 5, located at an angle of 180°. The centers of mass of the transition grate 1 and sieve boots 2, the longitudinal axes of the drive shaft 3 and the fingers 8 and 9 of the connecting rods 6 and 7, mounting points of elastic suspension 11 to the transition grate 1, sieve boots 2 and the frame of the combine 10 are located in the same plane, which provides balancing of the mechanism of cleaning.

EFFECT: in movement of the transition grate 1 and sieve boots 2 in the opposite directions balance of not only inertial forces is provided, but the moments of these forces, which reduces the combine vibration and improves reliability of its work.

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