TILLAGE TOOL Russian patent published in 2007 - IPC A01B49/02 

FIELD: agricultural engineering, in particular, soil tillage equipment.

SUBSTANCE: tillage tool has frame with mellowing devices, sections of rotary working devices arranged in row behind mellowing devices, and small frame. Rotary working devices are formed as drum with working members arranged in multiple-thread spiral path. Small frame is pivotally joined with tillage tool frame and comprises longitudinal link and link extending along drum axis. Drums of rollers are arranged in overlapped relation at an angle α to longitudinal link of small frame, with arctg (L/2D)<α<arctg (L/l, 1D), where L is length of drum, D is diameter of drum. Multiple-thread spiral which carries working devices is provided with right-hand coils for sections with front right-hand side or with left-hand coils for sections with front left-hand side.

EFFECT: improved quality of soil crumbling and leveling of field surface microrelief.

2 cl, 2 dwg