TILLAGE TOOL Russian patent published in 2016 - IPC A01B13/08 A01B49/02 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machine building, in particular, to machines for deep soil tillage. Tiller comprises frame with fixed in pairs, one after the other RH and LH inclined working elements forming transverse rows. In the transverse rows working elements are installed in pairs so that their inclined surfaces are facing each other. In all transverse pairs of working members, except the central pair, the butt of working element chisel which is the most remote from the longitudinal axis of symmetry, is shifted backward relative to the chisel of adjacent working element by a value greater than half the length, but less than length of the chisel. Posts of working members have two lines, oriented at an angle of 90° - φ < α < 90° facing downwards to front surface of the post of working element, where φ is the angle of friction between soil and steel. At lower line this bend has an angle 180° - Ψ while at the upper line it has angle 90° + Ψ, where Ψ is the angle of soil chipping. Working elements are secured to frame so that their lower parts extend forward relatively the top due to that end faces of their posts are inclined to horizon at angle γ = α + β, where β is the angle of chisel installation.

EFFECT: such design provides higher degree of soil crushing by working elements of tillage tool and reduced traction resistance.

1 cl, 5 dwg