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Through comparing and analyzing the existing digging shovel of cassava machinery, and based on the physical characteristics of soil, cassava tuber and the standard factors of the traction power, a triangular convex shovel was designed. Shovel blade angle is 106°, blade width is 100cm, shovel face tilt angle is 25°, the terminal height of shove is 20cm, shovel length is 30cm and of finger-like extension...