EXCAVATOR Russian patent published in 1995 - IPC

FIELD: building engineering. SUBSTANCE: excavating working head is self-contained, has no mechanical links to base vehicle. The frame is additionally equipped with unified units of running and leading support wheels connected to one another with transmission. Each unit of support wheels is able to reciprocate in crosswise guides. Units of leading support wheels are rotary. Structure of units of running and leading support wheels are rigid with chain drive to transmit torque from transmission to the wheels. All mechanisms of working head have self-contained drives connected through flexible linkage to power supply. EFFECT: simplified structure and improved quality. 8 dwg, 1 tbl