EXCAVATOR EQUIPMENT Russian patent published in 1997 - IPC

FIELD: mechanical engineering; earth moving machinery; single-bucket excavators. SUBSTANCE: excavator equipment has dipper stick, bucket connected to stick and two toe-rods hinge connected to each other. First tie-rod is hinge-connected with stick, and second one, with bucket. Jaw is hinge-mounted relative to bucket for turning around axis square to stick. Tie-rod is hinge-connected with jaw and first tie-rod or with hinge joints connecting first and second tie-rods. Hinge mounted of jaw relative to bucket employs two hinge joints. One of these joints is made spherical, and the other is made rotary and provided with slot square to longitudinal axis of rotation. Both hinge joints of jaw mounting can be made in form of rotary hinge joints with slots square to their longitudinal axis. Jaw can be installed on one rotary joint with radial clearances, and on other rotary joint with slot square to longitudinal axis of rotation of rotary hinge joint. Rotary hinge joint with slot square to longitudinal axis of rotary hinge joint can be furnished with one or resilient members fitted in slot. EFFECT: enlarged operating capabilities and enhanced reliability. 4 cl, 5 dwg