HEAVY ROTATARY HARROW Russian patent published in 2009 - IPC A01B21/08 

FIELD: agriculture.

SUBSTANCE: harrow contains hitch tongue, mechanism of frame position regulation with transport wheels. On frame two disc sections of spherical semi-discs, forming spherical toothed working disc, are installed at angle to each other with possibility to change angle of attack. Semi-discs are fixed on shaft flanges by means of screws and nuts. Between discs scrapers are installed. Spherical surface of each semi-disc has projection for formation of recess of flange size in central part from convex side. Semi-disc in place of joining with other semi-disc on external side form a cut similar to other cuts, located on external part of each semi-disc. Both semi-discs join to each other without clearance.

EFFECT: mentioned constructive implementation will allow to increase reliability of harrow working element and improve quality of soil processing.

2 cl, 3 dwg