SINGLE-BUCKET HYDRAULIC EXCAVATOR Russian patent published in 2003 - IPC

FIELD: earth-moving machinery; single-bucket hydraulic excavators. SUBSTANCE: proposed excavator contains transport base and fitted-on working equipment containing turnable column in form of freely turning pintle, boom with arm and working member, drive hydraulic cylinders and outriggers. Hydraulic cylinders are arranged at angle relative to each other, rods are interconnected and connected with boom by means of hinge joints, and housings of hydraulic cylinders are mounted on transport base by means of joints with two degrees of freedom. Working equipment is furnished with additional hydraulic cylinder, guides secured on boom and slider coupled with one end of additional hydraulic cylinder. Slider is made in form of carriage installed in guides. Other end of said hydraulic cylinder is coupled with horizontal axle of freely turning pintle. EFFECT: increased capacity. 6 dwg