WORKING EQUIPMENT OF HYDRAULIC EXCAVATOR Russian patent published in 1998 - IPC

FIELD: mechanical engineering; earth moving machinery. SUBSTANCE: working equipment of hydraulic excavator has handle, bucket with bracket hinge connected with handle, bell crank, tie-rods, ripping tooth and tooth and bucket control hydraulic cylinders. Ripping tooth is arranged inside handle together with controlled hydraulic cylinder. Roll are secured on ripping toot, and guides for rolls and wedge cover plates are installed in inner space of handle. Upper part of ripping tooth has taper widening for engagement with wedge cover plates. EFFECT: increased efficiency and preserved capacity of bucket. 4 dwg