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
BIM and Information Technology | Jul 6, 2015
New documentary shows Legos as touchstones of creativity
The film's narrator, actor Jason Bateman, says it’s a story “about a simple toy and how its unique properties ushered in a new era of creativity for a whole generation.”
Contractors | Jul 1, 2015
ABC: Nonresidential construction spending continues growth with stellar May
Through the first five months of 2015, nonresidential construction spending is having its second best year since the Census Bureau began tracking the metric in 2002, according to ABC.
Architects | Jun 29, 2015
Getty Foundation announces second series of ‘Keeping It Modern’ grants to conserve 20th century architecture
Frank Lloyd Wright’s Unity Temple and Erich Mendelsohn’s Einstein Tower are among the 14 projects added to the Keeping It Modern grant program.
Architects | Jun 29, 2015
9 top picks for continuing education from BD+C University
A roundup of top AIA/CES Discovery courses from BD+C University.
Industrial Facilities | Jun 24, 2015
5 trends that will shape the future of scientific labs
Scientific research is increasingly focusing on data collection and analytical analysis of that data, meaning the "lab of the future" will more closely resemble contemporary tech spaces, writes Gensler’s Erik Lustgarten.
Architects | Jun 23, 2015
Architecture Billings Index back to positive territory for May 2015
The American Institute of Architects reported the May ABI score was 51.9, up from a mark of 48.8 in April.
Architects | Jun 23, 2015
If film directors designed homes, what would they look like?
From Burton to Bergman, Gondry to Greenway, artist Federico Babina illustrates what buildings would look like if designed by the world’s greatest directors.
High-rise Construction | Jun 23, 2015
The world's best new skyscrapers for 2015
One World Trade Center and Abu Dhabi's Burj Mohammed Bin Rashid Tower are among the four towers named Best Tall Buildings by the Council on Tall Buildings and Urban Habitat.
Museums | Jun 23, 2015
Moreau Kusunoki's 'art in the city' scheme wins Guggenheim Helsinki design competition
The firm’s design concept makes use of the museum’s site, turning it into a bustling, well-connected waterfront hub.
Architects | Jun 22, 2015
NCARB adopts alternative for certification of foreign architects
The change, effective July 1, 2016, will replace the current BEFA Program’s requirements, eliminating the committee dossier review and the need to document seven years of credentialed practice in a foreign country.