GRAIN CLEANING MACHINE Russian patent published in 2006 - IPC A01F12/44 

FIELD: agricultural engineering, in particular, post-harvest grain processing equipment.

SUBSTANCE: grain cleaning machine has at least one tier with two sieve shoes which are positioned in succession at different levels and inclined in the course of transportation of material under separation procedure in order to provide transfer of grain from one sieve shoe to another sieve shoe. Each subsequent sieve shoe is positioned higher than previous sieve shoe. Pin of eccentric shaft positioned between sieve shoes, connecting rod and hangers attachment places are aligned with respect to one another along line extending through centers of mass of sieve shoes vibrating in opposite directions.

EFFECT: increased efficiency and enhanced reliability in operation of grain cleaning machine due to dynamic balancing of sieve shoes.

2 cl, 3 dwg