FIELD: agriculture; machine building.SUBSTANCE: invention relates to agricultural machine building. Potato digger contains tusks attached to the connecting rods pivotally mounted on the eccentrics, high-speed, main and cascade bar elevators, running and supporting wheels, screw mechanism for regulating the depth of undermining of tuberous formation, elliptical sprockets and an intensifier installed above them in the direction of travel of the heap, made in the form of a drive shaft with flanges. Intensifier is installed above the cascade rod elevator with possibility of changing the distance between it and the elevator bars. On the drive shaft of the intensifier, between the flanges spiral compression springs are mounted, wound with a gap between the turns with right and left guiding. Springs are made of round wire, and the wire surfaces are made of a material with a high coefficient of friction, for example rubber.EFFECT: intensified destructive effect on soil lumps is provided, improved soil separation, and
