SUBSURFACE PLOUGH WORKING TOOL Russian patent published in 2025 - IPC A01B13/08 A01B15/02 

FIELD: agriculture.

SUBSTANCE: subsurface plough working tool includes a toothed post, a thrust bearing, shoe (3) with cutting knives (4) and plate cutting discs (5) with sharpened edges along the circumference, which are fixed on them. Between plate cutting discs (5) to cutting knives (4) chisel-shaped loosening teeth (6) are attached with width equal to distance between circles of plate cutting discs (5), with a projection forward relative to the cutting edges of cutting discs (5) by the value of the radius of said discs (5) and the front working surface in the form of a logarithmic spiral with a positive convex curvature downwards and cutting edges in the form of a logarithmic curve in the horizontal plane.

EFFECT: higher penetration, degree of soil crumbling, reduced traction resistance and longer service life of working element due to redistribution of soil pressure between teeth, discs and blades.

1 cl, 4 dwg