FIELD: open-cast mining. SUBSTANCE: proposed dragline excavator has support base, turnable, boom with bucket suspended from boom by means of lifting wire ropes with rocker, wire ropes being passed over fairlead sheaves mounted on boom. Opening rear wall of bucket is furnished with locking mechanism in form of discharge chain and bar with lever. One end of discharge chain is connected to locking mechanism lever, and other end, to lifting wire rope rocker. Fairlead sheaves of lifting wire ropes are arranged in middle part over boom length being spaced in width. EFFECT: increased capacity. 2 cl, 6 dwg
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Authors
Dates
2002-07-27—Published
2000-11-13—Filed