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
Industry Research | Nov 28, 2017
2018 outlook: Economists point to slowdown, AEC professionals say ‘no way’
Multifamily housing and senior living developments head the list of the hottest sectors heading into 2018, according a survey of 356 AEC professionals.
Multifamily Housing | Nov 28, 2017
Elementary school, daycare campus will serve Toronto’s skyrise neighborhood
The $65 million Canoe Landing Campus brings much needed social infrastructure to the 20,000 residents of Toronto’s CityPlace towers.
Architects | Nov 28, 2017
Adding value through integrated technology requires a human touch
To help strike that delicate balance between the human and the high-tech, we must first have an in-depth understanding of our client’s needs as well as a manufacturer’s capabilities.
Architects | Nov 17, 2017
How to leverage historic tax credits
About 90% of the time prospective clients are not aware of historic tax credits.
Sponsored | Architects | Nov 16, 2017
Growing your AEC firm through an exceptional client experience
Many small AEC firms don’t feel they have the time to focus and create clear marketing messages.
Multifamily Housing | Nov 15, 2017
6 noteworthy multifamily developments: artists housing, tech lofts, resort-style senior living
These recently completed projects represent emerging trends and design innovations in the multifamily sector.
Architects | Nov 9, 2017
AECOM and Van Alen Institute announce four Urban SOS® 2017 finalists with bold ideas for creating more equitable cities
Multidisciplinary student teams were challenged to redefine the traditional “hour city” radius, providing broader access to opportunity.
Multifamily Housing | Nov 8, 2017
No place like home: LA’s The Six provides permanent supportive housing for veterans
The 52-unit development gives hope and dignity to homeless or disabled veterans and others in need.
Healthcare Facilities | Nov 6, 2017
Design isn’t enough to foster collaboration in healthcare and research spaces
A new Perkins Eastman white paper finds limited employee interaction at NYU Winthrop Hospital, a year after it opened.
Architects | Nov 6, 2017
How to start a negotiation: Begin as you mean to continue
How you start a negotiation often will determine where you end up, writes negotiation and mediation expert Brenda Radmacher.
