DESIGN METHOD FOR ELEVATOR, AND ELEVATOR
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United States of America Patent
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Issued Date -
Mar 7, 2024
app pub date -
Feb 1, 2021
filing date -
Feb 1, 2021
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Abstract
A main rope of an elevator includes a load support portion made of a composite material of high-strength fiber and resin. A design method for the elevator includes setting a design parameter so that a maximum compressive stress at the load support portion bent along a sheave including a drive sheave and a deflector sheave does not exceed compressive strength, and setting the design parameter so that a sum of a maximum tensile stress at the load support portion bent along the sheave and a mean stress additionally applied to the load support portion when a load required to decelerate a car running in a maximum loading state by gravitational acceleration is applied to the main rope does not exceed tensile strength.
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