FIELD: agriculture.
SUBSTANCE: invention relates to the field of agricultural engineering, in particular to the disc tillage working elements. The annular tillage part of the disc is located outside the specified central diameter (D). The central dish-shaped part of the disc is located within the specified diameter (d) and has an inner side for receiving the hub. The annular connecting part of the disc has holes for mounting bolts. The connecting part has a shape of a truncated cone. The line passing along the plane of each hole for the mounting bolt on the inner side forms an angle α equal to 5°-10°, with a plane perpendicular to the centre line of the disc. The transitional areas between the tillage part and the annular connecting part and between the annular connecting part and the central dish-shaped part form obtuse outer angles.
EFFECT: constructive solution enables to improve the strength of the disc.
9 cl, 8 dwg
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