COMBINED DOUBLE-DISK FURROW OPENER Russian patent published in 2011 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: furrow opener comprises two disk knives, installed vertically on a bracket, which provides for matching of traction force direction with direction of furrow opener movement. Behind the bracket there is a seed tube, a fertiliser tube and furrow-closing hoes. Planes of disk knives rotation match direction of movement. In the lower part of the disk knives there are furrow shapers installed for seeds and fertilisers as coupled with their side surfaces. The distance between the disk knives in cross direction relative to movement direction is accepted based on the condition of soil layer formation between seeds and fertilisers. Furrow shapers consist of wedge-shaped tips inclined towards the horizontal plane in direction of movement under the angle of sliding friction of weeds along wedge-shaped tips. Wedge-shaped tips are coupled with cheeks, upper edge of which is deflected away from a disk knife by an angle, which provides fixation of seeds and fertilisers along a row axis. The furrow shapers are fixed to a bracket with the help of sides. Behind cheeks of furrow shapers there are vertical limiters of furrows for arrangement of a seed tube and a fertiliser tube, as well as for prevention of dry soil layer fall to the furrow bottom. Vertical limiters of furrows are connected to furrow-closing hoes deflected towards a row axis and arranged away from the furrow bottom at the height, which ensures gripping and coverage of seeds and fertilisers with moist soil. The front disk with a furrow shaper provides for sowing of fertilisers, and the rear disk - for sowing of sown crop seeds.

EFFECT: provision of stable germinating ability of seeds due to simultaneous application of fertilisers and seeds with their separation by means of a soil layer and coverage with a moist soil layer.

3 dwg