Mining shovel with bushings at pin locations
AssigneeHarnischfeger Technologies, Inc.
InventorsMatthew L. Gross, Richard Nicoson
Life of this patent
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Abstract
A cartridge includes a body, an aperture extending through the body sized to receive a pivot pin, and a spherical bushing disposed within the body. The cartridge also includes a first internal seal disposed axially on one side of the bushing and a second internal seal disposed axially on an opposite side of the bushing. The cartridge also includes an end cap disposed at least partially within the aperture that abuts the bushing and prevents the bushing from moving axially in a first direction within the aperture.
Claims20
A cartridge for use at a pivot pin location on a mining machine, the cartridge comprising:
- a body;
- an aperture extending through the body sized to receive a pivot pin;
- a bushing disposed within the body;
- a first internal seal disposed axially on one side of the bushing and a second internal seal disposed axially on an opposite side of the bushing;
- and
- an end cap disposed at least partially within the aperture that abuts the bushing and prevents the bushing from moving axially in a first direction within the aperture.
A mining machine comprising:
- a first machine component;
- a second machine component;
- a pivot pin coupled to both the first machine component and the second machine component, wherein the pivot pin pivotally couples the first machine component to the second machine component, the pivot pin including a first end and a second end spaced axially from the first end;
- and
- a bushing assembly that supports the pivot pin and is coupled to the first machine component, the bushing assembly including:
- a cartridge having a body and a bushing disposed inside the body, the pivot pin extending through the body;
- a plurality of guide components that are coupled to and extend from the first end of the pivot pin;
- and
- an end plate coupled to the first end of the pivot pin, the end plate including a groove that receives portions of the guide components.
Dependencies are inferred from the claim text.