DISC HARROW Russian patent published in 2009 - IPC A01B21/00 A01B7/00 

FIELD: agriculture.

SUBSTANCE: harrow includes frame with transverse beams and hydraulic cylinder mounted on it to perform work tool lifting and lowering, support and transport wheels. Spherical disc batteries are mounted on frame and fixated to front and rear sections by backboards, and feature incidence angle adjustment device for discs. Transverse beam features balance device and control rod. Support and transport wheels are mounted on rotation axle made in the form of lever aggregate with common axis. Lever aggregate axis is connected to hydraulic cylinder at one lever side and to support and transport wheels at the other side. Front and rear battery sections are positioned in V-shaped pattern. Battery sections consist of central bar, wing bar, disc incidence angle adjustment device. Rollers are mounted on the frame behind disc batteries, rollers are made in the form of grinding rollers of welded needle structure and mounted in bracket bearings. Grinding roller can be gradually adjusted in height and features spring effort compensator preventing mechanical hardening of soil. Bracket is connected by backboards to beams. One beam is connected to central bar beam of rear section. Disc incidence angle adjustment device includes rotating nut which can freely rotate in flange junction to compensate angle between frame beams and central bar beam of front section, screw, and spherical elements.

EFFECT: enhanced reliability of harrow operation, extended functional capacity.

8 dwg