FIELD: agriculture; machine building.
SUBSTANCE: machine comprises frame, shovel, running wheels, screw mechanism control depth of digging down, disc knife, main and auxiliary separation elevators, tops drawing and support rollers, soil impurities cylindrical cleaner, made of rotating flat rollers, narrowing tray, plant impurities tops remover and working members drive reduction gear. Machine also contains active three-arm shakers on main and auxiliary separating elevators, frame with impurities output tray. Under tray scraper bar former is installed consisting of spiral and cylindrical rollers with hydraulic drive. First soil impurities cleaner roller is installed with displacement in vertical plane relative to next ones.
EFFECT: decreased losses and damage of seed onion during harvesting, improved separation and formation of bed under roll with controlled density.
1 cl, 2 dwg
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