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US 2015/0147146 A1Published application
Shovel having a wristing dipper
AssigneeHarnischfeger Technologies, Inc.
InventorsWilliam J. Hren, Jason Knuth
Life of this patent
Estimating the term…
Abstract
A rope shovel includes a wristing dipper arrangement. The shovel comprises a base, a boom extending from the base, the boom having a first end attached to the base and a second end remote from the base. The shovel further comprises a pulling mechanism mounted on the second end of the boom and a boom attachment pivotally mounted on the boom and attached to a dipper, the boom attachment including an actuator coupled to the dipper.
Claims13
A mining shovel comprising:
- a base including a hoist drum for paying out and reeling in a hoist rope;
- a boom including a first end coupled to the base and a second end opposite the first end, the hoist rope extending over the second end of the boom;
- a boom attachment movably coupled to the boom, the boom attachment rotatable relative to the boom about a first pivot location, the first member including a first end and a second end;
- an excavating member including a first portion and a second portion, the excavating member defining a material discharging opening and a material receiving opening, the first portion pivotably coupled to the second end of the boom attachment, the second portion pivotably coupled to the first portion to selectively close the material discharging opening;
- and
- a pivot actuator for moving the excavating member relative to the second end of the boom attachment, the pivot actuator including a first end coupled to the boom attachment.
3 more elements
A mining shovel comprising:
- a boom including a first end and a second end opposite the first end;
- a hoist rope extending substantially along the boom and passing over the second end of the boom;
- a handle moveably coupled to the boom, the handle rotatable relative to the boom about a first pivot location, the handle including a first end and a second end;
- an excavating member pivotably coupled to the second end of the handle at a wrist joint, the excavating member coupled to the hoist rope passing over the second end of the boom, the hoist rope exerting a tension force on the excavating member at a position that is offset from the wrist joint, the tension force inducing a moment on the excavating member to rotate the excavating member about the wrist joint in a first direction;
- and
- an actuator including a first end coupled to the handle and a second end coupled to the bucket proximate a lower end of the excavating member, extension of the pivot actuator causing the excavating member to rotate about the wrist joint in the first direction.
3 more elements
Dependencies are inferred from the claim text.