| 摘要 |
The invention relates to a dragline rigging system (10) which includes a pair of drag lines (12) connected to drag connection points (24) on a dragline bucket (18) for dragging the bucket through material to be excavated, a pair of hoist lines (14) connected to trunnions (30) on the dragline bucket for hoisting the bucket with excavated material during excavation, and a dump line (16) for lowering the front of the bucket (18) during dumping of excavated material. The dump line (16) is arranged to extend from the drag lines (12) over a pulley (52) linked to the hoist lines (14) and to a dump connection point (48) on the dragline bucket (18), and is in the form of a composite belt (42) which includes an inner material for receiving loads and an outer protective cover for resisting wear. |
