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
Smart Buildings | Apr 28, 2014
Cities Alive: Arup report examines latest trends in urban green spaces
From vertical farming to glowing trees (yes, glowing trees), Arup engineers imagine the future of green infrastructure in cities across the world.
| Apr 25, 2014
How the 'digital natives' will transform your Building Team
The newest generation to enter the workforce is like no other that has come before it. This cohort is the first to grow up with the Internet, mobile technologies, and an “always connected” lifestyle.
| Apr 25, 2014
A radiant barrier FAQ: Everything you wanted to know but were afraid to ask
There are many examples of materials developed for the space program making their way into everyday life and radiant barriers are just that. SPONSORED CONTENT
| Apr 25, 2014
6 winners selected for the Architectural League Prize
The Architectural League Prize, created in 1981, "recognizes exemplary and provocative work by young practitioners and provides a public forum for the exchange of their ideas," according to The Architectural League.
| Apr 24, 2014
Unbuilt and Famous: LEGO releases box set of Bjarke Ingels' LEGO museum
LEGO Architecture has created a box set that customers can use to build replicas of the LEGO Museum, which is not yet built in real life. The museum, designed by the Bjarke Ingels Group, will commemorate the history of LEGO.
| Apr 23, 2014
Ahead of the crowd: How architects can utilize crowdsourcing for project planning
Advanced methods of data collection, applied both prior to design and after opening, are bringing a new focus to the entire planning process.
| Apr 23, 2014
Developers change gears at Atlantic Yards after high-rise modular proves difficult
At 32 stories, the B2 residential tower at Atlantic Yards has been widely lauded as a bellwether for modular construction. But only five floors have been completed in 18 months.
| Apr 23, 2014
Experimental bot transfers CAD plans onto construction sites
The Archibot is intended to take technical data and translate it into full-scale physical markings on construction sites.
| Apr 23, 2014
Mean and Green: Top 10 green building projects for 2014 [slideshow]
The American Institute of Architects' Committee on the Environment has selected the top ten examples of sustainable architecture and ecological design projects that protect and enhance the environment. Projects range from a project for Portland's homeless to public parks to a LEED Platinum campus center.
| Apr 23, 2014
Architecture Billings Index dips in March
The March ABI score was 48.8, down sharply from a mark of 50.7 in February. This score reflects a decrease in design services.