SORTING GRATE FOR TRAWL AND ITS PRODUCTION METHOD Russian patent published in 2009 - IPC A01K73/02 

FIELD: agriculture.

SUBSTANCE: sorting grate consists of reinforced frame, longitudinal and transverse braces from polymeric material. The gate consists of sections rigidly joined between each other along the internal boundary. Each section is composed of casting construction differed by the shape of the outer boundary made of polymeric material on the basis of synthetic gum. Longitudinal and transverse braces of the outer boundary of the sections are designed in the form of hemispheric section at their junction point. Method of sorting gate production envisages production of all gate elements: frame, longitudinal and transverse braces made of reinforced polymeric material. The gate is assembled from single casting section joining them rigidly through binding along the outer boundaries designed in the form of hemispheric section. Casting moulds with hollows corresponded configuration and size of section elements are prepared for moulding of the sections. The reinforced material is panned in the hollows and filled them under pressure with polymeric material based on synthetic gum.

EFFECT: improvement of strength, flexibility and resistance of the gate at different operating loads, increase of service life and fabricability.

10 cl, 4 dwg