COMBINED PLOUGHSHARE Russian patent published in 2011 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: ploughshare comprises the following components serially installed on the stand along the ploughshare axis - a knife, a furrow maker, fertiliser and seed ducts. A flat knife with a tip is fixed to the stand, being installed in the front part at the angle φ to the horizontal plane, equal to the angle of weeds friction against the knife. The inclined part of the tip has a pad weld at the right side with a hard wear-resistant alloy, and at the left side it has a sharpened part, which is coupled with the left-sided flat-cutting leg, fixed to the side wall of the flat knife. The left-sided leg has an upper sharpened part and a pad weld of the blade lower edge with a hard wear-resistant alloy. The back part of the flat knife has a tail, to which the right-sided flat-cutting leg is fixed at the right side. The right-sided flat-cutting leg has an upper sharpened part and a pad weld of the blade lower edge with a hard wear-resistant alloy. The angle α of the flat-cutting legs crushing is accepted provided that the soil is crushed without mixing and lower layers carry-over to the surface, and the angle γ of the legs opening is accepted provided that the weeds are cut by sliding cutting without them covering the blade. Anvil makers of a furrow for seeds and fertilisers are fixed to the lower edge of the flat knife in the zone of the upper edge of the flat-cutting legs. The anvil furrow makes are arranged at various sides from the knife plane and are coupled with the seed duct and the fertiliser duct, behind which furrow-closing hoes are mounted. The furrow-closing hoes are installed at the height providing for gripping of the moist soil layer from the furrow walls and covering seeds and fertilisers with it. The furrow-closing hoes are inclined downwards to the horizontal plane from the front edge to the back one.

EFFECT: invention provides for improved germinating capacity of seeds.

3 dwg