GRAIN CLEANING AIR-SIEVE MACHINE Russian patent published in 2017 - IPC A01F12/44 B07B11/08 

FIELD: agriculture.

SUBSTANCE: grain cleaning air-sieve machine comprises a frame, a receiving chamber, a dividing chute, a unit of four sieve boots, two eccentric shafts, a sieve cleaning mechanism. The cleaning mechanism is equipped with a compensating device. The cleaning mechanism comprises two shafts and an electric drive. The shafts are installed in bearings on frame racks. Frames with brushes are attached to the shafts in the center. The oscillating motion of the shafts is ensured by a crank. The reciprocating motion of the frames with brushes is ensured by a connecting rod. The connecting rod is connected to the crank via a compensating device. The compensating device is made in the form of a U-shaped bracket. The bracket bottom is rigidly connected to the connecting rod. The crank is hingedly connected to the housing. The housing is installed between the bracket flanges and is rigidly connected thereto by a finger. The finger passes through the openings in the flanges and the housing. The openings in the bracket flanges are made in the form of a groove. The groove length is equal to the amplitude of the sieve boot oscillations. The groove width is equal to the finger diameter. The compensator placement is possible anywhere in the kinematic chain from the brush to the crank.

EFFECT: increasing the service life of the machine.

2 cl, 4 dwg