WHEEL-TYPE TRENCHING MACHINE Russian patent published in 1995 - IPC

FIELD: earth-moving equipment. SUBSTANCE: machine has tractor installed on rear wheels, two hinge-connected semiframes. additional nondriven wheels which can be lifted when machine is in operating position. Working member of machine is arranged between wheels. Semiframes and working member lifting mechanism are connected by small-size in length horizontal longitudinal joint. Working member lifting mechanism consists of vertical frame, carriage, rear rigid brace and carriage travel motion and vertical frame inclination hydraulic cylinders, all being secured on rear semiframe. EFFECT: increased traction effort, stability of machine, simplified design. 5 dwg