Dragline rigging system
AssigneeCaterpillar Commercial SARL
InventorGeorge Barnard Murray
Life of this patent
Estimating the term…
Abstract
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.
Claims12
A dragline rigging system including:
- a pair of drag lines connected or connectable to drag connection points on a dragline bucket for dragging the bucket through material to be excavated;
- a pair of hoist lines connected or connectable to hoist connection points located at or near the rear of the dragline bucket for hoisting the bucket with excavated material during excavation;
- and
- a dump line which is arranged to extend from the drag lines over a pulley linked to the hoist lines and to a dump connection point located at or near the from of the dragline bucket for lowering the front of the bucket during dumping of excavated material, the dump line including a composite belt having a first longitudinal end and a second longitudinal end, one or more inner load-bearing members extending from the first end to the second end for transferring loads from the first end to the second end, and an outer protective cover for resisting wear.
A composite dump-line belt for a dragline rigging system including a pair of drag lines and a pair of hoist lines, the composite dump-line belt having a first longitudinal end and a second longitudinal end, one or more inner load-bearing members which extend from the first end to the second end for transferring loads from the first end to the second end, an outer protective cover for resisting wear, a formation for attaching the belt to the drag lines, a formation for attaching the belt to a dump connection point located at or near the front of a dragline bucket, and an engaging surface for engaging a pulley linked to the hoist lines.
Dependencies are inferred from the claim text.