Modular sheave unit
AssigneeOtis Elevator Company
InventorsDavid R. Torlai, Jun Ma
Life of this patent
Estimating the term…
Abstract
Disclosed is a modular sheave unit including: a bearing that includes an outer race, an inner race and one or more rolling elements therebetween; and a sleeve that includes one or both of: an outer sleeve axially surrounding the outer race, the outer sleeve including an outer surface defining a groove, the groove configured to receive a belt; and an inner sleeve axially surrounded by the inner race and disposed between the inner race and a mandrel.
Claims18
A modular sheave unit configured for being arranged on a mandrel of an elevator sheave system, the modular sheave unit comprising:
- a bearing that includes an outer race, an inner race and a plurality of rolling elements therebetween, wherein the outer and inner races extend to opposite axial ends of the modular sheave and the rolling elements are respectively seated at axial distal and proximate sides of the outer and inner races;
- and
- an outer sleeve axially surrounding the outer race, the outer sleeve including an outer sleeve surface defining a belt receiving groove, the belt receiving groove having a belt seating portion located at an axial center portion of the outer sleeve, having an arcuate convex curvature forming a belt seat and opposing flanged side walls for centering and providing transition fit with a belt.
An elevator sheave system comprising:
- a plurality of modular sheave units arranged side by side along a mandrel;
- and
- each of the modular sheave units including:
- a bearing that includes an outer race, an inner race and a plurality of rolling elements therebetween, wherein the outer and inner races extend to opposite axial ends of the modular sheave and the rolling elements are respectively seated at axial distal and proximate sides of the outer and inner races;
- and
- an outer sleeve axially surrounding the outer race, the outer sleeve including an outer sleeve surface defining a belt receiving groove, the belt receiving groove having a belt seating portion located at an axial center portion of the outer sleeve, having an arcuate convex curvature forming a belt seat and opposing flanged side walls for centering and providing transition fit with a belt.
A method of configuring a modular sheave unit, comprising:
- arranging, a plurality of modular sheave units, side by side along a mandrel, each of the modular sheave units including:
- a bearing that includes an outer race, an inner race and a plurality of rolling elements therebetween, wherein the outer and inner races extend to opposite axial ends of the modular sheave and the rolling elements and respectively seated at axial distal and proximate sides of the outer and inner races;
- and
- an outer sleeve axially surrounding the outer race, the outer sleeve including an outer sleeve surface defining a belt receiving groove, the belt receiving groove having a belt seating portion located at an axial center portion of the outer sleeve, having an arcuate convex curvature forming a belt seat and opposing flanged side walls for centering and providing transition fit with a belt.
Dependencies are inferred from the claim text.