TWO-ROW COUPLING HITCH FOR HARROWS Russian patent published in 2014 - IPC A01B59/04 A01B73/00 

FIELD: agriculture.

SUBSTANCE: coupling hitch contains a carrier frame with support transport wheels, drag bar for tractor. On the carrier frame the central reach, tension bracings (side, left and right), wings with harrows and side slides with self-adjusting wheels are fixed. Self-adjusting wheels are controlled by hydraulic cylinders through the swing arms, rigidly fixed on wings. The hitch is in addition equipped with a back wing with a hydraulic cylinder and harrows, which is fixed on the carrier frame using the swing arms with pins. The side right and left wings are fixed on the carrier frame using articulated assemblies. Side right and left, and also back wings are installed symmetrically with reference to the axle of support transport wheels. Harrows are fixed to side right and left, and also to back wings by means of extensions and pins on axles and entering with a forward part into brackets of wings. The wings are installed with a possibility of imitation of relief of the locality and harrow raising.

EFFECT: simplification of design, improvement of operating reliability, life expectancy, productivity and quality of soil preparation.

2 cl, 8 dwg