DRILL Russian patent published in 1997 - IPC

FIELD: agricultural engineering, in particular, direct drilling without presowing treatment of soil. SUBSTANCE: drill has frame, supporting and driving wheels, seed box with seeding units, carrier bar with pivotally attached double-armed shares and disk cutters positioned in longitudinal-vertical planes in front of shares and connected by bars. Drill is further provided with power unit, mechanism for restricting disk cutter penetration depth and additional square-section shaft mounted on frame sides for angular rotation and provided with forks, which are kinematically connected by spring-loaded bars and individual carriers of disk cutters. Rear ends of carriers are pivotally secured on carrier bar. Front ends of carriers are provided with spindles for receiving rolling bearings and disk cutter hubs. Auxiliary power unit and mechanism for restricting disk cutter penetration depth are mounted on one arm of additional square-section shaft. Power unit is formed as drive eccentric mounted in axially aligned position on counter-drive shaft with driven sprocket, which is connected through chain drive links with drive sprocket of supporting and driving wheel. Eccentric is conjugated with its one cam to one arm of double-armed lever. Other arm of lever is positioned below mechanism for restricting disk cutter penetration depth. Disk cutter penetration depth restricting mechanism is formed as threaded variable-length stem mounted in bracket secured on frame side. Power unit eccentric has at least one cam. EFFECT: increased efficiency, simplified constriction and enhanced reliability in operation. 2 cl, 1 dwg