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
AEC Tech | Oct 28, 2020
Meet Jaibot, Hilti's new construction robot
The semi-autonomous robot is designed to assist MEP contractors with ceiling-drilling applications.
Hotel Facilities | Oct 27, 2020
Hotel construction pipeline dips 7% in Q3 2020
Hospitality developers continue to closely monitor the impact the coronavirus will have on travel demand, according to Lodging Econometrics.
Data Centers | Oct 26, 2020
Speed to market is biggest obstacle for burgeoning data center construction sector
Hyperscale and edge computing are driving growth in data center and mission critical facilities construction.
Adaptive Reuse | Oct 26, 2020
Mall property redevelopments could result in dramatic property value drops
Retail conversions to fulfillment centers, apartments, schools, or medical offices could cut values 60% to 90%.
Multifamily Housing | Oct 15, 2020
L.A., all the way
KFA Architecture has hitched its wagon to Los Angeles’s star for more than 40 years.
Architects | Oct 14, 2020
The Weekly Show: AI for building facade inspections; designing a world-class architecture firm
The October 15 episode of BD+C's "The Weekly" is available for viewing on demand.
Coronavirus | Oct 8, 2020
The Weekly show: Statue of Liberty Museum, emotional learning in K-12, LA's climate change vulnerability
The October 8 episode of BD+C's "The Weekly" is available for viewing on demand.
Architects | Oct 8, 2020
Gensler’s annual report chronicles the firm’s ‘transformation’
The firm positions itself as a leading voice for how building design plays a central role in meeting society’s evolving demands.
Smart Buildings | Oct 1, 2020
Smart buildings stand on good data
The coming disruption of owning and operating a building and how to stay ahead through BIM.
Architects | Oct 1, 2020
BIG imagines how we could live on the moon
The architecture firm has partnered with ICON on the project.