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
| Aug 11, 2010
Design firms slash IT spending in 2009
Over half of architecture, engineering, and environmental consulting firms (55%) are budgeting less for information technology in 2009 than they did in 2008, according to a new report from ZweigWhite. The 2009 Information Technology Survey reports that firms' 2009 IT budgets are a median of 3.3% of net service revenue, down from 3.6% in 2008. Firms planning to decrease spending are expected to do so by a median of 20%.
| Aug 11, 2010
A glimmer of hope amid grim news as construction employment falls in most states, metro areas
The construction employment picture brightened slightly with 18 states adding construction jobs from April to May according to a new analysis of data released today by the Bureau of Labor Statistics (BLS). However, construction employment overall continued to decline, noted Ken Simonson, the chief economist for the Associated General Contractors of America.
| Aug 11, 2010
Thom Mayne unveils 'floating cube' design for the Perot Museum of Nature and Science in Dallas
Calling it a “living educational tool featuring architecture inspired by nature and science,” Pritzker Prize Laureate Thom Mayne and leaders from the Museum of Nature & Science unveiled the schematic designs and building model for the Perot Museum of Nature & Science at Victory Park. Groundbreaking on the approximately $185 million project will be held later this fall, and the Museum is expected to open by early 2013.
| Aug 11, 2010
SOM's William F. Baker awarded Fritz Leonhardt Prize for achievement in structural engineering
In recognition of his engineering accomplishments, which include many of the tallest skyscrapers of our time, William F. Baker received the coveted Fritz Leonhardt Prize in Stuttgart, Germany. He is the first American to receive the prize.
| Aug 11, 2010
American Concrete Institute forms technical committee on BIM for concrete structures
The American Concrete Institute (ACI) announces the formation of a new technical committee on Building Information Modeling (BIM) of Concrete Structures.
| Aug 11, 2010
10 tips for mitigating influenza in buildings
Adopting simple, common-sense measures and proper maintenance protocols can help mitigate the spread of influenza in buildings. In addition, there are system upgrades that can be performed to further mitigate risks. Trane Commercial Systems offers 10 tips to consider during the cold and flu season.
| Aug 11, 2010
Reed Construction Data files corporate espionage lawsuit against McGraw-Hill Construction Dodge
Reed Construction Data (RCD), a leading construction information provider and a wholly-owned subsidiary of Reed Elsevier (NYSE:RUK, NYSE:ENL), today filed suit in federal court against McGraw-Hill Construction Dodge, a unit of The McGraw-Hill Companies, Inc. (NYSE:MHP). The suit charges that Dodge has unlawfully accessed confidential and trade secret information from RCD since 2002 by using a series of fake companies to pose as RCD customers.
| Aug 11, 2010
Jacobs, HOK top BD+C's ranking of the 75 largest state/local government design firms
A ranking of the Top 75 State/Local Government Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Brad Pitt’s foundation unveils 14 duplex designs for New Orleans’ Lower 9th Ward
Gehry Partners, William McDonough + Partners, and BNIM are among 14 architecture firms commissioned by Brad Pitt's Make It Right foundation to develop duplex housing concepts specifically for rebuilding the Lower 9th Ward in New Orleans. All 14 concepts were released yesterday.
| Aug 11, 2010
NAVFAC releases guidelines for sustainable reconstruction of Navy facilities
The guidelines provide specific guidance for installation commanders, assessment teams, estimators, programmers and building designers for identifying the sustainable opportunities, synergies, strategies, features and benefits for improving installations following a disaster instead of simply repairing or replacing them as they were prior to the disaster.
