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US 8,939,516 B2Granted
Rotary cutter drum for continuous mining machine
AssigneeCaterpillar Global Mining Highwall Miners LLC
InventorsStewart Myers, Robert Henry, Cornelis Wilhelm In't Hout
Life of this patent
Estimating the term…
Abstract
A rotary cutter drum for a continuous mining machine having a cutter drum, a bearing hub, an inner bearing, a sealing assembly and a shaft disposed in an inner portion of the cutter drum, the shaft having at least one flat passageway disposed along a longitudinal axis of the hub for allowing a lubricating fluid to move from an oil reservoir to a bearing surface.
Claims18
A rotary cutter comprising:
- a cutter drum having a bore;
- a bit coupled to an exterior surface of the cutter drum;
- a shaft positioned inside the bore, the shaft having a flat passageway extending along a longitudinal axis of the shaft and a bearing portion disposed on an exterior surface of the shaft;
- a bearing disposed between the shaft and the cutter drum;
- and
- an inner bearing disposed on the shaft between the bearing and a center portion of the shaft, wherein the inner bearing is configured to interface with the bearing and is inhibited from rotating with respect to the shaft, and wherein the inner bearing and the bearing are configured to move longitudinally along an axis of the shaft.
3 more elements
A rotary cutter comprising:
- a cutter drum having a first bore comprising:
- a first inner portion having a first diameter;
- and
- a second inner portion having a second diameter wherein the second diameter is greater than the first diameter;
- a cutting bit coupled to the cutter drum;
- a bearing having a second bore, the bearing disposed in the first bore;
- a shaft positioned inside the second bore, the shaft having a flat passageway extending along an axis of the shaft and a bearing portion disposed on an exterior surface of the shaft, the bearing portion being in contact with the bearing;
- an oil reservoir disposed in the first inner portion between the cutter drum and the shaft, the oil reservoir being filled with a lubricating fluid, wherein the lubricating fluid passes along the passageway from the oil reservoir to a surface where the bearing portion of the shaft contacts the bearing;
- and
- an inner bearing disposed in the first bore on the shaft between the bearing and a center portion of the shaft, wherein the inner bearing is configured to interface with the bearing and is inhibited from rotating with respect to the shaft, wherein the inner bearing and the bearing are configured to move longitudinally along an axis of the shaft, and wherein the inner bearing is configured to inhibit the lubricating fluid from leaving the oil reservoir other than via the passageway.
7 more elements
A mining machine comprising:
- a frame;
- a shaft coupled to the frame, the shaft having a flat passageway extending along an axis of the shaft and a bearing portion disposed on an exterior surface of the shaft;
- a bearing disposed on the shaft, a portion of the bearing being in contact with the bearing portion of the shaft;
- a cutter drum disposed on the bearing, the cutter drum rotating with respect to the shaft;
- a cutting bit coupled to the cutter drum;
- and
- an inner bearing disposed on the shaft between the bearing and a center portion of the shaft, wherein the inner bearing is configured to interface with the bearing and is inhibited from rotating with respect to the shaft, and wherein the inner bearing and the bearing are configured to move longitudinally along the axis of the shaft.
4 more elements
Dependencies are inferred from the claim text.