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Thin Elevator Ropes on Small Sheaves

By Elevator World | July 1, 2011

This article evaluates the correlation between the ratio of sheave diameter to nominal rope diameter and rope service life. In recent years, a movement has gained ground in the elevator industry toward the introduction of more compact and smaller designs. Efforts to cut energy consumption and costs have driven down the size of individual components.…

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How “Equal” Should Equal Tension Be When Fitting or Adjusting Elevator Hoist Ropes?

By Elevator World | July 1, 2011

This paper looks at how accurately hoist ropes should be measured to achieve minimum wear and maximum life. There is a difference of opinion between installers on how equal hoist rope tensions need to be in order to achieve the best performance. Some believe that an engineer’s thumb is a suitable tool for judging when…

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Rope Dynamics

By Phil Andrew, MSc, MPhil and Stefan Kaczmarczyk, PhD | July 1, 2011

This study explores how transient vibrations arise and why rope vibrations occur. by Phil Andrew, MSc, MPhil and Stefan Kaczmarczyk, PhD Rope vibrations in an elevator system usually result in a ride quality that is unacceptable. A well-known phenomenon is “transient” vibration, which occurs at a specific point in the elevator travel, usually near the…

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Small Ropes – Aspects for Usage in Elevator Application

By by Dr. Wolfram Vogel and Dr. Wolfgang Scheunemann | July 1, 2011

This research examines the effects and usage of small-diameter suspension ropes. This paper was presented at Lucerne 2010, the International Congress on Vertical Transportation Technologies and first published in IAEE book Elevator Technology 18, edited by A. Lustig. It is a reprint with permission from the International Association of Elevator Engineers (website: www.elevcon.com). This paper…

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