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
| Jul 20, 2012
2012 Giants 300 Special Report
Ranking the leading firms in Architecture, Engineering, and Construction.
| Jul 20, 2012
Data Centers Report: Demand ‘exploding’
BD+C's Giants 300 Top 25 AEC Firms in the Data Center sector.
| Jul 20, 2012
Office Report: Fitouts, renovations keep sector moving
BD+C's Giants 300 Top 25 AEC Firms in the Office sector.
| Jul 20, 2012
K-12 Schools Report: ‘A lot of pent-up need,’ with optimism for ’13
The Giants 300 Top 25 AEC Firms in the K-12 Schools Sector.
| Jul 20, 2012
Higher education market holding steady
But Giants 300 University AEC Firms aren’t expecting a flood of new work.
| Jul 20, 2012
3 important trends in hospital design that Healthcare Giants are watching closely
BD+C’s Giants 300 reveals top AEC firms in the healthcare sector.
| Jul 20, 2012
Global boom for hotels; for retail, not so much
The Giants 300 Top 10 Firms in the Hospitality and Retail sectors.
| Jul 20, 2012
Gensler, Stantec, Turner lead ‘green’ firms
The Top 10 AEC Firms in Green Buildings and LEED Accredited Staff.
| Jul 19, 2012
Renovation resurgence cuts across sectors
Giants 300 reconstruction sector firms ‘pumping fresh blood in tired spaces.’