The invention discloses a bionic drag reduction potato harvester digging
shovel, and belongs to the technical field of
agricultural machinery. The bionic drag reduction potato harvester digging
shovel is of an integrated structure comprising soil piercing
shovel teeth, a soil contact shovel surface I, a shovel
handle, a soil contact shovel surface II and a
concave surface, a shovel body is arc-shaped, the soil contact shovel surface I and a convex surface are positioned in the front of the digging shovel, the soil contact shovel surface II and the
concave surface are positioned at the back of the digging shovel, the convex surface is positioned in the middle of the soil contact shovel surface I, the
concave surface is arranged in the middle of the soil contact shovel surface II, the soil piercing shovel teeth are positioned at the front end of the digging shovel, the shovel
handle is positioned at the
tail end of the digging shovel, the top end of the digging shovel is rectangular, transits to the bottom end by an arc and is fixedly connected with top ends of the soil contact shovel surface I and the soil contact shovel surface II, three triangular sunk screw holes are formed in the shovel
handle, the soil piercing
wedge angle alpha of the digging shovel ranges from 20 degrees to 45 degrees, and the clearance angle theta of a shovel edge with the soil piercing shovel teeth ranges from 3 degrees to 6 degrees. The digging shovel is high in applicability, the soil piercing capacity and drag reduction and
desorption properties of the potato digging shovel can be remarkably improved, and the drag reduction property is improved by 30% or more as compared with a traditional potato digging shovel.