Rackbar rotation limit
AssigneeJoy Global Underground Mining LLC
InventorRyan E. Perry
Life of this patent
Estimating the term…
Abstract
A rackbar for a mining machine has a body including a first end and second end, an inner rack wall, an outer rack wall spaced from the inner rack wall, a plurality of gear teeth extending between the inner rack wall and the outer rack wall, an extension disposed adjacent the first end, a pin aperture positioned on the extension, and a rib extending along a surface of the extension. The inner and outer rack walls extend between the first end and the second end parallel to a rack axis. The extension extends in a direction perpendicular to the rack axis. The pin aperture is configured to receive a pin.
Claims25
A rackbar for a mining machine, the rackbar comprising:
- a body including a first end and a second end;
- an inner rack wall extending between the first end and the second end along a rack axis;
- an outer rack wall spaced from the inner rack wall and extending between the first end and the second end parallel to the rack axis;
- a plurality of gear teeth, each of the gear teeth extending between the inner rack wall and the outer rack wall;
- an extension disposed adjacent the first end, the extension extending in a direction perpendicular to the rack axis;
- a pin aperture positioned on the extension and configured to receive a pin;
- and
- a rib protruding from a surface of the extension.
A clog for supporting a rackbar of a mining machine, the clog comprising:
- a first wall extending in a first direction;
- a second wall spaced from the first wall, the second wall extending parallel to the first direction;
- a cavity between the first wall and the second wall, the cavity configured to receive a portion of the rackbar;
- a first pin aperture positioned on the first wall;
- a second pin aperture positioned on the second wall;
- and
- a rib positioned on one of the first wall and the second wall, the rib positioned on and protruding from a surface adjacent the cavity, the rib being elongated in a second direction that is perpendicular to the first direction.
A mining machine comprising:
- a rackbar including,
- a body including a first end and a second end,
- an inner rack wall extending between the first end and the second end along a rack axis,
- an outer rack wall spaced from the inner rack wall and extending between the first end to the second end parallel to the rack axis,
- a plurality of gear teeth, each of the gear teeth extending between the inner rack wall and the outer rack wall,
- an extension disposed adjacent the first end, the extension extending in a direction perpendicular to the rack axis,
- a pin aperture positioned on the extension, and
- an inner rack rib protruding from a surface of the extension;
- and
- a clog supporting the rackbar, the clog including,
- a first wall extending parallel to the rack axis,
- a second wall spaced from the first wall, the second wall extending parallel the rack axis,
- a cavity between the first wall and the second wall, the cavity configured to receive the extension of the rackbar,
- a first pin aperture disposed on the first wall,
- a second pin aperture disposed on the second wall,
- a clog rib positioned on one of the first wall and the second wall, the clog rib positioned on and protruding from a surface adjacent the cavity, and
- a pin securing the rackbar to the clog.
Dependencies are inferred from the claim text.