US 6,599,052 B1Granted

Hub and shaft coupling system

AssigneeReliance Electric Technologies, LLC

InventorAllyn E. Phillips

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Abstract

A technique is disclosed for removably coupling a shaft and hub to one another. The hub includes a pair of tapered regions near ends of its inner peripheral surface. The shaft may be tapered in a region designed to contact one of the tapered surfaces, or a tapered bushing arrangement may be used on the same end. On an opposite end, a tapered bushing is inserted between the shaft and the hub, and interfaces with the tapered portion of the hub to draw the shaft into tight engagement with the hub, with the bushing wedged between, during assembly. A retaining plate abuts a retaining ring, within the bushing, and a fastener through the retaining plate draws the hub and shaft tightly together during assembly. The retaining plate may receive removal fasteners which urge disengagement of the tapered bushing and shaft for easy and controlled disassembly of the hub and shaft from one another for servicing.

Claims21

Dependent claims

A coupling system comprising:

a hub having first and second ends, and including a first tapered portion adjacent to the first end and a second tapered portion adjacent to the second end;
a shaft positionable within the hub through the second end, the shaft having an end portion and a threaded bore formed in the end portion;
a tapered bushing positionable between the shaft and the hub adjacent to the first end of the hub, the tapered bushing contacting the first tapered portion of the hub;
a retainer engaging the tapered bushing to urge the tapered bushing into engagement between the hub and shaft, the retainer having a first aperture therethrough;
an abutment ring secured between the tapered bushing and the retainer, the retainer abutting the abutment ring to draw the tapered bushing into engagement between the hub and the shaft, the retainer being selectively positionable between a first side of the abutment ring for engagement of the tapered bushing between the hub and shaft and a second side of the abutment ring for disengagement of the tapered bushing from the hub and the shaft;
and
a securement fastener received through the aperture of the retainer and into the threaded bore of the shaft to draw the tapered bushing into tight engagement between the hub and the shaft.

4 more elements

A coupling system comprising:

a hub having first and second ends;
a shaft positionable within the hub through the second end, the shaft having an end portion and a threaded bore formed in the end portion;
a tapered bushing positionable between the shaft and the hub adjacent to the first end of the hub;
a retainer engaging the tapered bushing to urge the tapered bushing into engagement between the hub and the shaft, the retainer having a first aperture and a second aperture therethrough, the second aperture being threaded;
a securement fastener engageable through the first aperture of the retainer and into the threaded bore of the shaft to draw the tapered bushing into tight engagement between the hub and the shaft;
an abutment ring secured between the tapered bushing and the retainer, the retainer contacting the abutment ring for drawing the tapered bushing into engagement between the hub and the shaft, the retainer being selectively positionable between a first side of the abutment ring for engagement of the tapered bushing between the hub and the shaft and a second side of the abutment ring for disengagement of the tapered bushing, and
a removal fastener engageable within the second aperture of the retainer to exert a removal force between the retainer and the shaft for disengagement of the tapered bushing and the shaft.

4 more elements

A coupling system comprising:

a hub having first and second ends, and including a first tapered portion adjacent to the first end and a second tapered portion adjacent to the second end;
a shaft positionable within the hub through the second end, the shaft having an end portion and a threaded bore formed in the end portion;
a tapered bushing positionable between the shaft and the hub adjacent to the first end of the hub, the tapered bushing contacting the first tapered portion of the hub, wherein the tapered bushing is disposed substantially flush with or within an end of the hub when engaged between the hub and the shaft;
a retainer adapted to engage the tapered bushing to urge the tapered bushing into engagement between the hub and the shaft, the retainer including a first, central aperture located in a generally central region thereof and a plurality of second, threaded apertures disposed radially outwardly of the central region for receiving respective threaded fasteners engaging the shaft for removal of the tapered bushing from the shaft;
a securement fastener engageable through the first aperture of the retainer and into the threaded bore of the shaft to draw the tapered bushing into tight engagement between the hub and the shaft;
and
removal fasteners engageable within the second apertures of the retainer to exert a removal force between the retainer and the shaft for disengagement of the tapered bushing and the shaft.

4 more elements

Dependencies are inferred from the claim text.