POTATO-DIGGER Russian patent published in 2013 - IPC A01D13/00 A01D21/04 

FIELD: agriculture.

SUBSTANCE: invention relates to the agricultural machinery industry, in particular to machines and mechanisms used to harvest potatoes in small-scale farms. The potato-digger comprises a wheeled frame with a digging working body in the form of a plow share with cutting edges. Above the working body a beater and a drive are located. The rear part of the plow share is rigidly connected with a screen. The plow share and the screen vary linearly pistonwise. The slope angle of the plow share to the horizontal is 30°. The slope angle of the screen to the horizontal is 20°. Above the plow share the first paddle beater is mounted. The axis of the first paddle beater is mounted in a transverse plane perpendicular to the plow share plane. The beater paddles touch the surface of the plow share at maximum lifting of the plow share. The projection of the axis of the shaft of the first paddle beater to the plow share is 2/3 of the plough-point. Above the screen, a second paddle beater is mounted. The axis of the second paddle beater is mounted in a transverse plane perpendicular to the screen plane. The paddles of the second beater touch the surface of the screen at maximum lifting of the screen. The projection of the axis of the shaft of the second paddle beater to screen is at a distance of half the length of the screen. The blades of the first and second beaters are mounted on the axis of the shafts of the first and second paddle beaters. Each paddle of the beaters is made in the form of finger comb. The shaft of the first and second beater is made of a square tube with pins on the ends of the shaft. On the tube the plates are mounted for fixing the finger comb. The comb fingers are made of elastic rods of conical shape. The gap between the fingers of the comb at the top of the cones of the comb fingers is 20 mm. The comb finger length is 150 mm.

EFFECT: invention provides movement of the soil layer at the place of coupling of the plow share and the screen, thereby improving the separation of soil due to activation of the layer by the second beater.

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