COMBINED TILLAGE TOOL Russian patent published in 2006 - IPC A01B49/02 

FIELD: agricultural engineering.

SUBSTANCE: combined tillage tool has frame, tines, working devices, roller, and bars with knife-shaped teeth formed as right isosceles triangles. One of legs of right triangle is inclined to axis of bar at an angle β and its cutting edge is inclined at an angle α. Cutting edges arranged on adjacent teeth bars are positioned opposite to one another at both sides of working device tine. Teeth at adjacent bars are arranged in overlapped relationship of Δ, whose value is determined from dependence: where c is length of tooth cutting edge; α is inclination angle of tooth cutting edge to tine axis; β is angle of inclination of said leg to axis of bar; a is coefficient dependent upon physical and mechanical properties of soil.

EFFECT: reduced number of passages of tillage tool on field, decreased excessive compaction of soil and, accordingly, increased soil fertility.

6 dwg