TRENCHER Russian patent published in 2010 - IPC E02F5/02 

FIELD: construction.

SUBSTANCE: invention pertains to earth movers and can be used to dig trenches and install cables. Trencher comprises motor vehicle chassis and working element with serially arranged ploughshare cutters, with the possibility for each ploughshare cutter to cut a layer of ground, providing a cutting zone for subsequent ploughshare cutter. Trencher includes lifting mechanism, holder of which comprises stand with working element, which is made of two parts: main first part fixed on stand and installed in guide with the possibility of displacement in vertical plane, the second movable part connected to the first main part by means of vertical multilink hinged joint. Besides ploughshare cutters are arranged as crescent-shaped and are installed on inclined working surfaces of both parts of suspension with inclination to the side of cutting. And value of ploughshare cutters inclination is arranged as identical or different, with the possibility to cut for each ploughshare cutter.

EFFECT: invention provides for simultaneous cutting of two soil layers in case of any inclination of working equipment in trench and cable laying.

3 cl, 6 dwg