FIELD: agriculture. SUBSTANCE: potato digger has frame 1 carrying conveyor 4 with fingers 5, with lower run of conveyor 4 being mounted for movement in direction of advancement of potato digger, and drive. Conveyor 4 is positioned at an angle α to direction of advancement of digger and provided with mechanism for supporting lower run of conveyor 4. Conveyor drive operates so as to regulate conveyor speed. Ratio of potato digger speed and conveyor speed is V(d) = V(c) cosα,, where V(d) is speed of potato digger; V(c) is speed of conveyor; α is angle of conveyor relative to direction of advancement of potato digger. EFFECT: increased efficiency and enhanced reliability in operation. 2 cl, 3 dwg
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