DISK HARROW Russian patent published in 2016 - IPC A01B21/08 A01B23/06 

FIELD: machine building.

SUBSTANCE: invention relates to agricultural machine building, particularly to tillage tools intended for surface treatment of soil. Harrow comprises a frame with support wheels and disc working elements. Each section is mounted on frame to adjust angle of attack of working members. Sections of disc working elements are hinged to frame by means of length-adjustable draw-bars, fixed to frame in two rows with a different angle of attack of first and second row. Sections of disc working elements represent a set of discs, each of which consists of a central spherical part coupled with vertical part according to the Fig. 1. Upper vertical section of working element has height equal to required depth of soil treatment. Blade of vertical part with spherical side has sharpening, and at opposite side of build-up of hard wear-resistant alloy.

EFFECT: such design reduces power input for tillage of soil.

1 cl, 3 dwg