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
| Dec 12, 2014
SOM names winner of One World Trade Center photo contest
Gerry Padden's winning photo offers a striking juxtaposition of the Brooklyn Bridge with the sparkling One World Trade Center tower.
| Dec 11, 2014
2015 Architecture Firm Award goes to Ehrlich Architects
The AIA Architecture Firm Award, given annually, is the highest honor the AIA bestows on an architecture firm and recognizes a practice that consistently has produced distinguished architecture for at least 10 years.
| Dec 11, 2014
Moshe Safdie awarded 2015 AIA Gold Medal
The AIA Gold Medal, voted on annually, honors an individual whose significant body of work has had a lasting influence on the theory and practice of architecture.
| Dec 10, 2014
International Olympic Committee releases first images of new HQ in Switzerland
Designed by 3XN, the new headquarters is located within a park on the shores of Lake Geneva and adjacent to historic Château de Vidy, which has been the iconic home of the IOC.
| Dec 10, 2014
CannonDesign acquires Astorino, forms design-led design-build division
The merger also extends CannonDesign’s presence in the markets Astorino currently serves, namely Pittsburgh and Abu Dhabi.
| Dec 10, 2014
Must see: Babina's latest illustrations cast famous architecture quotes as colorful road signs
Babina has adapted quotes from famous names such as Frank Lloyd Wright, Alvar Aalto, and Mies Van Der Rohe.
| Dec 9, 2014
Steven Holl wins Mumbai City Museum competition with 'solar water' scheme
Steven Holl's design for the new wing features a reflective pool that will generate energy.
| Dec 9, 2014
ABC economist predicts continued construction industry growth in 2015
In his latest report, ABC's Chief Economist Anirban Basu forecasts nonresidential construction spending to expand by roughly 7.5% next year, led by the power, lodging, office, and manufacturing sectors.
| Dec 8, 2014
How brick and mortar enables online retail
According to a shopping preferences study conducted by A.T. Kearney, as many as two-thirds of shoppers go to a physical store before or after making an online purchase, writes Gensler's Jill Nickels.
| Dec 8, 2014
The year’s boldest BIM/VDC themes
High-speed rendering software, custom APIs, virtual reality tools, and BIM workflow tips were among the hottest BIM/VDC topics in 2014.