Mitsubishi Electric Corp announced the overview of its ultra-high-speed elevator developed for the 632-meter Shanghai Tower under construction in Shanghai, China.
For the traction motor of the elevator, Mitsubishi Electric employed a parallel drive system that uses two three-phase winding coils for each motor and controls the two three-phases with two control panels. By using two compact control panels, the company enabled to design the layout of a machinery room more freely while increasing output power. The operation of the elevator is scheduled to begin in 2014.
To realize the world's fastest speed of 1,080 m per minute, Mitsubishi Electric used new technologies for higher safety, lifting height and comfort as well as for the motor for the winch. Specifically, to enhance safety, the company employed a two-tiered brake (the company's former product has a one-tiered brake) for emergency stop and used fine ceramic with a heat resistance of up to about 1,000°C for the brake shoe.
The buffer (shock absorber) at the bottom of the elevator shaft is comprised of three tiers (the former product has a one-tiered butter) and has a stroke of 7.3 meters, which is about 30% shorter than the stroke of the former product's buffer.
For the "sfleX-rope," a rope for the winch, Mitsubishi Electric employed a new structure so that it can hold a greater weight of a longer rope. The company improved the density of the rope by using a concentric-layered steel wire and filled the gap between the layers with plastic.
As a result, the company increased breaking load by 85% while increasing mass per unit length only by 18%. The new rope is less extensible. So, when people get in the elevator, it does not shake vertically much.
This time, Mitsubishi Electric newly developed a control cable that is 20% lighter than the one used for the former product.
For the comfort, the new elevator is equipped with the "active roller guide," which detects vibration and applies anti-phase vibration to it so that the vibration of the car is reduced. While two units of the active roller guide are installed in the bottom of the former product, Mitsubishi Electric added two more to the upper side of the new elevator because a different type of vibration is applied to the new product when it is moving at an ultra-high speed. As a result, vibration was reduced to about 1/3 that of the former product.
Furthermore, the new elevator is equipped with a streamlined aerodynamic car cover that reduces air resistance as well as an air pressure control device consisting of an air blower, a duct and a box for switching between air intake and emission. As a result, rapid changes in atmospheric pressure can be prevented, reducing passengers' feeling of fullness in the ear. BD+C
Related Stories
Energy-Efficient Design | Apr 19, 2022
A prefab second skin can make old apartments net zero
A German startup is offering a new way for old buildings to potentially reach net-zero status: adding a prefabricated second skin.
Concrete Technology | Apr 19, 2022
SGH’s Applied Science & Research Center achieves ISO 17025 accreditation for concrete testing procedures
Simpson Gumpertz & Heger’s (SGH) Applied Science & Research Center recently received ISO/IEC17025 accreditation from the American Association for Laboratory Accreditation (A2LA) for several concrete testing methods.
Senior Living Design | Apr 19, 2022
Affordable housing for L.A. veterans and low-income seniors built on former parking lot site
The Howard and Irene Levine Senior Community, designed by KFA Architecture for Mercy Housing of California, provides badly needed housing for Los Angeles veterans and low-income seniors
Sponsored | BD+C University Course | Apr 19, 2022
Multi-story building systems and selection criteria
This course outlines the attributes, functions, benefits, limits, and acoustic qualities of composite deck slabs. It reviews the three primary types of composite systems that represent the full range of long-span composite floor systems and examines the criteria for their selection, design, and engineering.
Building Team | Apr 18, 2022
Shive-Hattery Acquires WSM Architects
Shive-Hattery announces that it has acquired WSM Architects, Inc., a 13-person architecture firm in Tucson, Arizona.
University Buildings | Apr 18, 2022
SmithGroup to design new Univ. of Colorado Denver engineering, design, computing building
The University of Colorado Denver selected SmithGroup to design a new engineering, design, and computing building that will serve as anchor of new downtown innovation district.
Building Team | Apr 15, 2022
Frank Gehry to design his largest building yet for his hometown of Toronto
Famed architect Frank Gehry will design his largest building to date for his hometown of Toronto, Canada.
Healthcare Facilities | Apr 14, 2022
Healthcare construction veteran creates next-level IPD process for hospital projects
Can integrated project delivery work without incentives for building team members? Denton Wilson thinks so.
Industrial Facilities | Apr 14, 2022
JLL's take on the race for industrial space
In the previous decade, the inventory of industrial space couldn’t keep up with demand that was driven by the dual surges of the coronavirus and online shopping. Vacancies declined and rents rose. JLL has just published a research report on this sector called “The Race for Industrial Space.” Mehtab Randhawa, JLL’s Americas Head of Industrial Research, shares the highlights of a new report on the industrial sector's growth.
High-rise Construction | Apr 14, 2022
Seattle’s high-rise convention center nears completion
The new Washington State Convention Center Summit Building—billed as the first high-rise convention center in North America—is on track to complete most of its construction later this year.