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Engineering
MRL-Lift-Design-and-Development

MRL Lift Design and Development

By rc-Admin | August 1, 2020

A firsthand account of the origins of the modern MRL by Hongliang Liang A technology breakthrough was announced in 1996: a way to locate a gearless permanent-magnet (PM) motor directly in the shaft to eliminate the machine room. Though the PM motor were to be small, it would produce high torque to directly drive the…

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Loewe-Circular-Lift

Loewe Circular Lift

By rc-Admin | May 1, 2020

Careful redesign showcases bespoke panoramic lift. by Lee Dean When Loewe, the LVMH-owned luxury fashion house, planned a new flagship store on New Bond Street in London, developer Loewe Hermanos (UK) Ltd. and architect Loewe Architecture Dept. wanted to make a statement. Taking over the grade-II-listed building at 41-42 New Bond Street (which had been…

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Braking-Capacity-Requirements-of-Elevators-Figure-4

Braking Capacity Requirements of Elevators

By rc-Admin | March 1, 2020

Outlining problems in A17.1 and EN 81-20 by Guangchi Liang Modern elevator safety highly depends on the elevator braking capacity. Braking failure will lead to car overspeed or unintended car movement (UCM) with the car door open, increasing the risk of death or serious injury to an unacceptable level. Of the more-than-6-million elevators operating in…

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Fulfilling the Potential of DD DCS

By rc-Admin | September 1, 2019

The double-deck destination-control system (DD DCS) combines two well-known approaches to boost morning up-peak traffic in office buildings and save building core space. This article describes the technical principles of elevator dispatching, on which Rick Barker’s article “Harmonized Elevator Dispatching and Passenger Interfaces” (ELEVATOR WORLD, November 2018) is based. Editor Double-deck elevators with DCSes are…

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Creep-of-Suspension-Ropes-Figure-3

Creep of Suspension Ropes

By rc-Admin | March 1, 2019

An examination of creep property (not to be confused with slippage) as it works on suspension ropes This article focuses on the creep property of suspension rope. It analyzes its cause and properties, then discusses how to test the total creep of the rope. A reasonable amount of total creep is recommended for ropes on…

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Using-Multiphase-Drives-as-the-Elevator-Propulsion-System-Figure-1

Using Multiphase Drives as the Elevator Propulsion System

By rc-Admin | November 1, 2018

Separately exploring use of a six-phase inductive motor and six-phase matrix converter in effort to boost reliability and efficiency of elevator drives by Davoud Karbalaei, Amir Bahram Daraei and Hossein Bakhtiari This article investigates the performance of multiphase motors for use as drives for traction elevators and shows their advantages when compared against three-phase motors.…

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Elevator World | April 2021 Cover

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