FIELD: agricultural engineering.
SUBSTANCE: rotary tiller has shaft and knife equipped with cutting edges. Knife is made of inversion-turning type, in the form of integral part manufactured from constructional steel strip. Knife cutting edges are provided along steel strip. Knife is equipped with left-hand and right-hand strips and joined to said strips through channels defined upon bending of strips by an angle of 90 deg toward working surface of knife along bending lines inclined at an angle of 30-60 deg toward cutting edges. Cutting edge of left-hand strip is inclined toward knife working surface at an acute angle, and cutting edge of right-hand strip is inclined at an obtuse angle. Cutting edge of knife is set at an angle of 3-8 deg to generatrix surface of rotary tiller shaft. Free ends of strips are equipped with mounting openings and seat belts.
EFFECT: improved quality of shear, increased efficiency and reduced consumption of power for rotary tillage process.
2 cl, 7 dwg
