Modular elevator sheave assembly
AssigneeOtis Elevator Company
InventorsJun Ma, Alexander Serkh
Life of this patent
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Abstract
An illustrative example embodiment of an elevator sheave assembly includes a plurality of polymer rings that are secured together. The plurality of polymer rings includes at least two polymer rings that each have an outer circumferential surface that defines a portion of a belt guiding surface adjacent a flange at a longitudinal end of the sheave assembly. The at least two polymer rings each include a bearing supported inside the ring.
Claims20
An elevator sheave assembly, comprising:
- a plurality of polymer rings that are secured together, the plurality of polymer rings including at least two polymer rings that each have an outer circumferential surface;
- wherein the at least two polymer rings comprise
- a first polymer end ring where the outer circumferential surface has a first profile that defines a first portion of a first belt-guiding surface adjacent a first flange at one longitudinal end of the elevator sheave assembly, and
- a second polymer end ring where the outer circumferential surface has a second profile that defines a first portion of a second belt-guiding surface adjacent a second flange at an opposite longitudinal end of the elevator sheave assembly;
- and
- at least one polymer intermediate ring having one inner lateral edge associated with the first polymer end ring and an opposite inner lateral edge associated with the second polymer end ring, the at least one polymer intermediate ring including an outer circumferential surface having a third profile having a first portion associated with the first belt-guiding surface and a second portion associated with either the second belt-guiding surface or another belt-guiding surface between the third profile and the second belt-guiding surface.
An elevator sheave assembly, comprising a plurality of polymer rings that are secured together, the plurality of polymer rings including at least two polymer rings that each have an outer circumferential surface that defines a portion of a belt guiding surface adjacent a flange at a longitudinal end of the elevator sheave assembly, the at least two polymer rings each including a bearing supported inside a respective polymer ring, and wherein
- the at least two polymer rings are a first polymer end ring and a second polymer end ring;
- the first polymer end ring is at a first longitudinal end of the polymer sheave assembly;
- the outer circumferential surface of the first polymer end ring has a first profile that defines a first portion of a first belt-guiding surface;
- the second polymer end ring is at a second longitudinal end of the polymer sheave assembly;
- the outer circumferential surface of the second polymer end ring has a second profile that defines a first portion of a second belt-guiding surface;
- the plurality of polymer rings includes at least one polymer intermediate ring situated between and connected to the first and second polymer end rings;
- and
- the at least one polymer intermediate ring includes an outer circumferential surface having a profile that defines a second portion of the first belt-guiding surface and a second portion of the second belt-guiding surface.
A method of making an elevator sheave assembly, the method comprising:
- situating a first polymer end ring at a first longitudinal end of the sheave assembly, the first polymer end ring including an outer circumferential surface having a first profile that defines a first portion of a first belt-guiding surface;
- connecting at least one polymer intermediate ring to the first polymer end ring, the at least one polymer intermediate ring including an outer circumferential surface having a profile that defines a second portion of the first belt-guiding surface;
- and
- connecting a second polymer end ring to the at least one polymer intermediate ring to situate the second polymer end ring at a second longitudinal end of the sheave assembly, the second polymer end ring including an outer circumferential surface having a second profile that defines a first portion of a second belt-guiding surface, the at least one polymer intermediate ring profile defining a second portion of the second belt-guiding surface.
Dependencies are inferred from the claim text.