TREE DIGGING-OUT MACHINE Russian patent published in 2007 - IPC A01G23/04 

FIELD: earth digging technique, in particular, machines for digging-out of trees during replanting thereof.

SUBSTANCE: machine has self-propelled means with vertical boom, cutting tools and hydraulic cylinders. Vertical boom is made in the form of two guides connected with one another, and carriage with annular detachable casing, said carriage being positioned for displacement relative to two guides. Casing is provided with four guides and carriages with cutting tools fixed thereon. Hydraulic cylinders are mounted on vertical boom, casing and its guides. Cutting tools are made in the form of trapezium with flanged sides having trough defining cross-section.

EFFECT: increased efficiency and simplified construction of machine.

2 cl, 4 dwg