Technology
KEB dV/dt Elevator Chokes: Protect your Elevator Motor Investment
This article provides an explanation of the effects of high dV/dt created by variable-frequency drives and offers solutions to protect elevator motors. submitted by KEB America, Inc. During the past...
Submersible Electric Motors for Hydraulic Lifts
Choosing the appropriate motor for an elevator can allow more efficient energy use. by Ivo Busi and Fabio Calegari In recent years, the hydraulic lift, as an alternative to the...
Fire Alarm Systems and Elevator Interaction
A look at how fire alarm, sprinkler and elevator controls work together in accordance with present-day fire and electrical code mandates Elevator technology has advanced over the years in the...
Building Technology: Intelligent Building Management Systems
A look at the advantages of placing intelligent building-management systems in control of car operations A Return to the Past One hundred years ago, the supervisors and attendants of elevator...
Abolishing Pit and Head-room: It’s Possible Now More than Ever Before
A patent-pending solution for an eleva-tor with a reduced pit depth and over-head, which increases safety by creating a temporary refuge space to prevent crushing, is presented. This article presents...
Maintenance Support Tools for Elevator Equipments that use Cellular Phones
This paper was presented at Lucerne 2010, the ÂInternational Congress on Vertical Transportation ÂTechnologies and first published in IAEE book Elevator Technology 18, edited by A. Lustig. It is a...
Improving the Efficiency of Hydraulic Elevators
How Schumacher Elevator Co. utilizes Bucher Hydraulics, Inc. technology to improve hydraulic elevator efficiency. Denver, Iowa-based Schumacher Elevator Co. has been family owned and operated for 75 years. Marvin Schumacher...
Induction Loops That Only Mimic the Performance of a Hearing Aid are Never Inexpensive, but Always a Waste of Money
In a rush to satisfy the latest amendment to the EN 81-70 standard on lift accessibility, the industry is purchasing induction loops based on price and ease of installation without...
Sensitivity Analysis of Lift Car Installation Design Variables to Guide Shoes Wear
A numerical sensitivity analysis of how several design variables of a lift-car installation determine the wear of guide shoes is presented. F. J. MartÃnez1, R. Monge1, M. A. MartÃnez2, J....
Thin Elevator Ropes on Small Sheaves
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...
