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
Sponsored | Architects | Aug 2, 2017
Are visual ergonomics the new key to project delivery?
An Australian Home Theater Company is out to prove that the easier you can see it, the easier you can sell it.
Multifamily Housing | Jul 27, 2017
Apartment market index: Business conditions soften, but still solid
Despite some softness at the high end of the apartment market, demand for apartments will continue to be substantial for years to come, according to the National Multifamily Housing Council.
Multifamily Housing | Jul 27, 2017
Game rooms and game simulators popular amenities in multifamily developments
The number of developments providing space for physical therapy was somewhat surprising, according to a new survey.
Building Enclosure Systems | Jul 26, 2017
Balcony and roof railings and the code: Maintain, repair, or replace? [AIA course]
Lacking familiarity with current requirements, some owners or managers complete a roof or balcony rehabilitation, only to learn after the fact that they need to tear noncompliant railings out of their new roof or terrace and install new ones.
Office Buildings | Jul 26, 2017
Meeting space leads to innovation
PDR Principal Larry Lander explains how to design for workplaces where four generations are working together.
Architects | Jul 25, 2017
AIA 2030 Commitment expands beyond 400 architecture firms
The 2016 Progress Report is now available.
Multifamily Housing | Jul 19, 2017
Student housing trends: The transformation of co-living in college
The Student Hotel is representative of a new model for delivering housing solutions for students globally.
Designers | Jul 19, 2017
5 laws every designer can live by
What is design? Who are designers? And are there any common laws or rules than can unite the many types of design that exist?
Sponsored | Architects | Jul 19, 2017
Introducing StrXur by Bluebeam
Our goal is to present unique perspectives you may not be able to find anywhere else.
Sponsored | Accelerate Live! | Jul 13, 2017
Defining the future by mastering the art of change
From my perspective, what separates organizations thriving in the digital revolution from those who are not boils down to one thing: leadership.