WORKING EQUIPMENT OF DRAGLINE EXCAVATOR Russian patent published in 1994 - IPC

FIELD: mining machine manufacturing. SUBSTANCE: in working equipment of walking dragline dipper 1 with digging moves under action of drag cables 6 taking off layer of soil. In this case hoist cables 5 are eased from drum 4. Length of slack sides (from head units 3) of hoist cables 5 is adjusted with the aid of hydraulic cylinders 11 mounted on superstructure 9. For transportation of loaded dipper 1 hoisting is accomplished with hoisting cables 5 and drag cables 6 are eased from drum 4. Unloading of dipper 1 is conducted due to lengthening of slack sides of drag cables 6 by means of hydraulic cylinders 11. EFFECT: improved efficiency and reliability of working equipment of dragline excavator. 2 dwg