DISC-SHAPED WORKING ELEMENT Russian patent published in 2009 - IPC A01B23/06 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural engineering. The working element is in form of a spherical disc with a cutting edge and is fixed on an axle in form of a polyhedron. The spherical disc is made of two parts. The attachment part of the disc has the shape of a spherical segment with an opening in the centre below the size of the polyhedron of the axle. The working part of the disc is in form of a spherical layer with a cutting edge on the larger diametre. The spherical layer of the working part of the disc is interfaced with spherical segment of the attachment part by mounting shoulders and mating faces. The shoulders and mating faces are mutually fixed by fasteners.

EFFECT: such a design allows or longer service life of the disc.

2 dwg