WORKING ELEMENT OF ROTOR TRENCH EXCAVATOR Russian patent published in 2011 - IPC E02F5/08 E02F3/24 

FIELD: construction.

SUBSTANCE: working element of a rotor trench excavator includes rotor rings, buckets, teeth at buckets with normal and shorter cantilever towards a working face and arranged along significantly thinned stage-staggered schemes. Cutting perimeters are installed between neighbouring buckets and have teeth with cantilever towards the working face equal to the cantilever of normal teeth at buckets, and their cutting edges are aligned in lines of bucket shorter teeth passage along the working face. At the same time, number of teeth at cutting perimeters is reduced twice, compared to number of passage lines of the bucket shorter teeth at the working face. Teeth arrangement at two neighbouring perimeters has periodical displacement to the left and to the right relative to the longitudinal plane of the rotor rings at the distance between the neighbouring passage lines of the bucket shorter teeth at the working face. Besides, cutting perimeters are fixed hingedly to the rotor rings and have L-shaped levers with free bucket shorter teeth at the working face. Besides, cutting perimeters are fixed hingedly to the rotor rings and have L-shaped levers, free ends of which rest against springs installed on brackets into the rotor rings, and also rollers in areas of levers bend with the possibility of their contact with the limiting rotor shield, on rings of which there are supports installed for double-arm levers.

EFFECT: increased efficiency of rotor trench excavators operation in solid and frozen soils.

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