SOIL TILLAGE ROTAVATOR WITH VARIABLE CUTTING ANGLE OF KNIFE Russian patent published in 2004 - IPC

FIELD: agricultural engineering. SUBSTANCE: rotavator has shaft, carrier disk, and knives, and is further provided with additional shaft, gear rigidly put thereon, fastening rigidly mounted on main shaft, and worm-and-wheel gear and adjusting gear. Worm-and-wheel gear is positioned in fastening and is equipped with disk for driving thereof. Additional shaft is mounted at its one end in opening of carrier disk and at its other end in fastening. Adjusting gear is positioned on main shaft for rotation relative to it upon engagement with gear mounted on additional shaft. Pins are inserted into adjustable gear openings. Free ends of pins are inserted into openings made on inoperating ends of knives. EFFECT: increased efficiency and improved tillage quality of different types of soil. 2 dwg