HINGED TANDEM-DISC HARROW Russian patent published in 2015 - IPC A01B21/08 

FIELD: agriculture.

SUBSTANCE: harrow comprises a frame with brackets for mounting, the front and rear beams with disc sections. The disc sections are mounted at an angle to each other with the ability to vary the angle of attack. The disc sections have sections of spherical half-discs fixed to the shaft flanges with bolts and nuts, forming a spherical gear working disc. The disc section of the front beam is driven by the power take-off shaft (PTO shaft) of the power unit through the driveline, a gear mounted on the left end of the front beam to the direction of travel, and a gear coupling. The frame is made of two parts pivotally interconnected with the ability of rotation of the rear frame part relative to the front frame part using the hydraulic cylinder of double-action. The hydraulic cylinder is mounted on the front frame part. On the rear beam between the spherical working bodies the scrapers are mounted.

EFFECT: improvement of manoeuvrability of the unit with a harrow.

3 cl, 5 dwg