Improved design and experiment of separating sieve for potato digger

ABSTRACT The original two-order separating sieve has a good potato-soil ability, but it causes significant damage to potatoes while ensuring high potato detection rate, which in turn affects the working effectiveness of digger. Thus, is necessary improve design swing separation with surface one three-order solve contradiction between and damage. On this basis, movement characteristics performance new were experimentally investigated. experiment was conducted test field Wuchuan County using completely randomized single-factor scheme three factors five levels, crank speeds (140, 150, 180, 210 225 rpm), machine forward (1.41, 1.51, 1.70, 1.89 2.21 km h-1) boom-connecting rod length combinations (250-350-1,030, 250-370-1,040, 270-370-1,050, 290-370-1,060 310-370-1,070 mm). Each repeated times at each level, average value taken as final result. experimental results demonstrate that can ensure rate maintaining low skin breakage rate.