COMBINED TILLAGE TOOL Russian patent published in 2003 - IPC

FIELD: agricultural engineering, in particular, subsoil tillage equipment. SUBSTANCE: combined tillage tool has frame, cutting disks and shear hoes, which are arranged in succession on shafts mounted on frame. Mellowing device is mounted between middle cutting disks at intersection point of cutting disks arrangement lines. Tillage tool is further equipped with flat hoes arranged on frame behind disks, harrow roll mounted behind flat hoes, and slitters positioned behind outer cutting disks in the vicinity of cutting edge junctions. Cutting disks and flat hoes are arranged in two rows. Cutting disks are positioned in upper row, have positive rear shear angle and are arranged at predetermined distance from one another in transversely overlapped relation with one another. Distances between cutting disk shafts is determined from equation: S=(D-e)/Sin α, where D is diameter of cutting disk; e is transverse disk overlap value; α is angle between tillage tool advancement direction and line of arrangement of cutting disks. Flat hoes are positioned in horizontal plane in the form of arrow. EFFECT: reduced power consumption and improved quality of soil tillage. 2 cl, 1 dwg