WINNOWING MACHINE Russian patent published in 2011 - IPC A01F12/44 

FIELD: agriculture.

SUBSTANCE: invention relates to the agricultural machinery and can be used in devices for after-harvesting treatment of grains. A winnowing machine comprises a frame, a device to feed grain, four sieves equal in mass of a cassette and an eccentric shaft with connecting rods. Cassettes are arranged in four floors and are connected pairwise with links into movable sieve boots of inner and outer cassettes. The centre of mass of sieve boots is located in one point. Areas of connecting rods fixation, the eccentric shaft and the centre of mass of sieve boots are located on the same line. Each sieve boot is installed in suspensions and stands of identical length. Along with grain motion the sieve boot of outer cassettes is installed on suspensions and stands, and the sieve boot of inner cassettes is installed on stands and suspensions or vice versa.

EFFECT: winnowing machine has high reliability and dynamic balance in operation.

2 dwg