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US 10,538,896 B2Granted
Hoist drum for power shovel
AssigneeCaterpillar Global Mining LLC
InventorsJason J. Trotnow, Gurbachan S. Bumraw
Life of this patent
Estimating the term…
Abstract
A hoist drum is disclosed for use with a power shovel. The hoist drum may have a body that is hollow and generally cylindrical, and an anchor connected to an outer annular surface of the body. The hoist drum may also have at least one stiffener located inside the body and extending in an axial direction of the body across the anchor.
Claims19
A multi-piece hoist drum, comprising:
- a body that is hollow and generally cylindrical;
- an anchor welded to the body such that a perimeter of the anchor is flush with an outer annular surface of the body, the anchor being configured to retain a cable end portion;
- and
- at least one stiffener welded to the anchor and an interior surface of the body and extending in an axial direction of the body across the anchor,
- wherein:
- a weld seam forming an interface between the perimeter of the anchor and the outer annular surface of the body is an external weld seam viewable from outside the multi-piece hoist drum,
- the body includes an opening to receive the anchor, and
- a periphery of the body at the opening is beveled to provide for the weld seam between the periphery of the body and the perimeter of the anchor.
5 more elements
A multi-piece hoist drum, comprising:
- a body that is hollow and generally cylindrical;
- an end casting located at an end of the body and having a hub extending outward in an axial direction from a center thereof;
- an outer annular weld seam connecting the end casting to the body;
- an anchor welded to the body such that an entire perimeter of the anchor is flush with an outer annular surface of the body, the anchor being configured to retain a cable end portion;
- and
- at least one stiffener welded to the anchor and an interior surface of the body and extending in the axial direction of the body across the anchor,
- wherein:
- a weld seam forming an interface between the perimeter of the anchor and the outer annular surface of the body is an external weld seam viewable from outside the multi-piece hoist drum,
- the body includes an opening to receive the anchor, and
- a periphery of the body at the opening is beveled to provide for the weld seam between the periphery of the body and the perimeter of the anchor.
7 more elements
A power shovel, comprising:
- a machine frame;
- a boom pivotally connected at a base end to the machine frame;
- a dipper handle pivotally connected at a midpoint of the boom;
- a dipper pivotally connected to a distal end of the dipper handle;
- a rope extending over a distal end of the boom to connect to the distal end of the dipper handle;
- and
- an internal hoist drum connected to the machine frame and configured to reel in the rope, the internal hoist drum including:
- a drum body that is hollow and generally cylindrical;
- an anchor recessed within an outer annular surface of the drum body and configured to retain a cable end on an outer surface of the body, the anchor having a flat bottom surface that is non-tangential with the outer annular surface;
- at least one stiffener welded to the anchor and an interior surface of the drum body and extending in an axial direction of the drum body across the anchor;
- a plurality of annular grooves formed within the outer annular surface of the drum body;
- an end casting connected to an end of the drum body by way of an outer annular weld seam and having a hub extending outward in an axial direction from a center thereof;
- and
- a flange formed at an end of the drum body opposite the end casting and extending radially outward.
11 more elements
Dependencies are inferred from the claim text.