COMBINED SINGLE-DISC COULTER Russian patent published in 2016 - IPC A01C7/20 

FIELD: agriculture; machine building.

SUBSTANCE: ploughshare includes a vertical disk knife installed on a bracket, which ensures matching of the traction force direction with the ploughshare motion direction. Seed duct and fertilizer duct are installed behind the bracket. In the lower part of the disk knife there are furrow makers installed to lay seeds and to apply fertilizers, in a coupled manner with its side surfaces at both sides. Furrow makers consist of grooves formed as Archimedes spiral in vertical plane and parabola in horizontal planes of toepieces connected with side plates. Upper edge of side plates is diverted away from the disk knife by 25…35° angle ensuring fixation of seeds and fertilizers along the row axis. Furrow makers are fixed to the bearing assembly bracket via sidewalls, set along the width of flanges, providing the necessary deepening of ploughshare. Furrow makers have vertical furrow limiters arranged behind side plates along the width to arrange a seed duct and fertilizer duct. Fertilizer duct is shifted forward relative to seed duct by the distance, providing a soil layer between fertilizers and seeds using a fixed height adjustable press wheel. Press wheel is designed as a set of opposite truncated cones, between which the circular knife set, preventing the mixing of soil layers and providing formation of soil layer between seeds and fertilizer. Blade of the knife disk of wheel separates seed and fertilizer ducts.

EFFECT: this design provides resistant and uniform seedlings.

1 cl, 3 dwg