DISC TOWED HARROW Russian patent published in 2017 - IPC A01B21/08 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery industry. The disc towed harrow comprises a hitch tongue, a frame, a frame alignment mechanism, transport wheels, hydraulic cylinders of lifting and lowering the disc sections. Two front and two rear beams are mounted on the frame at an angle to each other with the ability to change the angle of attack. The disc sections are mounted on the beams with the ability of rotation. On the shaft flanges the spherical half-discs are fixed with bolts and nuts, which form a spherical toothed working disc. Scrapers are mounted between the working discs. On both sides of the frame sidewalls, close to its front and rear parts, two vertical plates parallel to each other are welded, having the aligned holes in the longitudinal horizontal plane. Between the plates, an eye bar is hingedly mounted by a pin, having horizontal and vertical openings. The eye bar axes are crossed at a right angle. In the vertical opening of the eye bar through the pin welded to the front and rear beams from the sidewalls of the frame, a disc section is attached with the ability of rotation about the axis of the vertical opening of the eye bar in the horizontal plane. The free ends of the front and rear beams with the disc sections mounted on them by the pin welded to the free end of the front and rear beams are pivotally interconnected by means of a double-acting hydraulic cylinder.

EFFECT: reduced load influencing the cantilever ends of the beams with disc sections is provided.

2 cl, 5 dwg