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 26, 2013
HDR acquires Sharon Greene + Associates
HDR Engineering, Inc. has acquired the business and assets of Sharon Greene + Associates, a firm specializing in transportation economics and financial analysis with offices in California and Denver.
| Jul 26, 2013
How biomimicry inspired the design of the San Francisco Museum at the Mint
When the city was founded in the 19th century, the San Francisco Bay’s edge and marshland area were just a few hundred feet from where the historic Old Mint building sits today. HOK's design team suggested a design idea that incorporates lessons from the local biome while creating new ways to collect and store water.
| Jul 25, 2013
3 office design strategies for creating happy, productive workers
Office spaces that promote focus, balance, and choice are the ones that will improve employee experience, enhance performance, and drive innovation, according to Gensler's 2013 U.S. Workplace Survey.
| Jul 25, 2013
How can I help you?: The evolution of call center design
Call centers typically bring to mind an image of crowded rows of stressed-out employees who are usually receiving calls from people with a problem or placing calls to people that aren’t thrilled to hear from them. But the nature of the business is changing; telemarketing isn’t what it used to be.
| Jul 25, 2013
First look: Studio Gang's residential/dining commons for University of Chicago
The University of Chicago will build a $148 million residence hall and dining commons designed by Studio Gang Architects, tentatively slated for completion in 2016.
| Jul 25, 2013
Resilience: the hallmark of a successful practice
The key to a firm’s future success has less to do with avoiding trouble than bouncing back from it.
| Jul 25, 2013
ACEEE presents the 2013 Champions of Energy Efficiency in Industry Awards
The American Council for an Energy-Efficient Economy (ACEEE) presented four Champion of Energy Efficiency Awards last night at its Summer Study on Energy Efficiency in Industry.
| Jul 24, 2013
Architecture Billings Index dips slightly in June, but demand for design services remains positive
All building sectors are seeing an increase in demand for architectural services, according to AIA's Architecture Billings Index for June.
| Jul 23, 2013
Paul Bertram to speak at ACEEE Summer Study on Energy Efficiency
Paul Bertram, FCSI, CDT, LEED AP and director of environment and sustainability for Kingspan Insulated Panels N.A., will present a white paper during the American Council for an Energy Efficient Economy (ACEEE) 2013 Summer Study on Energy Efficiency in Industry.
| Jul 22, 2013
School officials and parents are asking one question: Can design prevent another Sandy Hook? [2013 Giants 300 Report]
The second deadliest mass shooting by a single person in U.S. history galvanizes school officials, parents, public officials, and police departments, as they scrambled to figure out how to prevent a similar incident in their communities.