Linkage for arm assembly with reduced weld fatigue
AssigneeCaterpillar Global Mining LLC
InventorsDaniel T. Unger, Ramanagarajan Meenakshinathan, Kort C. Randall
Life of this patent
Estimating the term…
Abstract
A work machine includes a frame, a traction system supporting the frame, an arm assembly having a first end and a second end, the first end connected to the frame, an implement connected to the second end, and a linkage connecting the implement to the second end of the arm assembly. The linkage includes a pin-supporting section configured to accept a pin and a linking section attached to the pin-supporting section by a weld. The linking section includes a recess proximate to the weld.
Claims17
A work machine, comprising:
- a frame;
- a traction system supporting the frame;
- an arm assembly having a first end and a second end, the first end being connected to the frame,
- an implement connected to the second end;
- and
- a linkage connecting the implement to the second end of the arm assembly, the linkage having a pin-supporting section configured to accept a pin, and a linking section attached to the pin-supporting section by a weld, the linking section formed from a linking body with a separate side plate attached to each side of the linking body, the linking section having a recess proximate the weld being located on an outside surface of the separate side plate, the recess having a height extending in the same direction of the linking section, and the height is less than 50% of the overall length of the linking section.
A linkage for an arm assembly of a work machine, comprising
- a first pin-supporting section configured to accept a pin;
- and
- a linking section having a first end and a second end, the first end attached to the pin-supporting section by a weld, the linking section formed from a linking body with a separate side plate attached to each side of the linking body, and a first recess defined by the first end, the first recess being located on an outside surface of the separate side plate, the first recess having a height extending in the same direction of the linking section, and the height is less than 50% of the overall length of the linking section.
A method of producing a linkage for an arm assembly with reduced weld fatigue, comprising:
- providing a first pin-supporting section configured to accept a pin;
- providing a linking section having a first end, the linking section formed from a linking body with a separate side plate attached to each side of the linking body;
- machining a first recess in an outward facing side surface of the separate side plate proximate the first end such that the first recess has a height less than 50% of the overall length of the linking section;
- and
- welding the first end of the linking section to the first pin-supporting section.
Dependencies are inferred from the claim text.