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
| Jun 20, 2013
Virtual meetings enhance design of University at Buffalo Medical School
HOK designers in New York, St. Louis and Atlanta are using virtual meetings with their University at Buffalo (UB) client team to improve the design process for UB’s new School of Medicine and Biomedical Sciences on the Buffalo Niagara Medical Campus.
| Jun 19, 2013
Architects upbeat about the construction market
Following the first reversal into negative territory in ten months in April, AIA's Architecture Billings Index bounced back in May, reaching 52.9.
| Jun 19, 2013
NSF Sustainability begins verifying EPDs that can be used for LEED V4
NSF Sustainability has verified Environmental Product Declarations (EPDs) for nylon carpet styles and colors manufactured by Mannington Commercial and for J+J Flooring Group’s Kinetex® flooring product and Invision brand modular styles that use eKo® backing.
| Jun 19, 2013
Florida is latest battleground over LEED standards centered on certified wood
A nationwide battle over forest certification standards continues to be played out nationally and in Florida with legislation passed this month.
| Jun 19, 2013
Construction site safety improved in 2011
On-the-job construction fatalities dropped from 802 in 2010 to 781 in 2011, and recordable injuries fell from 4.7 per 100 workers in 2008 to 3.9 per 100 in 2011, according to data from the Bureau of Labor Statistics.
| Jun 19, 2013
New York City considers new construction standards for hospitals, multifamily buildings
Mayor Michael Bloomberg’s administration has proposed new building codes for hospitals and multifamily dwellings in New York City to help them be more resilient in the event of severe weather resulting from climate change.
| Jun 18, 2013
Report: HVAC occupancy sensors could slash building energy demand by 18%
Researchers at the DOE's Pacific Northwest National Laboratory conclude that significant energy savings can be achieved by varying ventilation levels based on the number of people in a given space.
| Jun 18, 2013
Turner report: Activity in urban markets driving construction cost increases
Turner Construction Company announced that the Second Quarter 2013 Turner Building Cost Index – which measures costs in the non-residential building construction market in the United States – has increased to a value of 859. This reflects a 1.18% increase from the First Quarter 2013 and 4.00% yearly increase from the Second Quarter 2012.
| Jun 17, 2013
First look: Austin to get first high-rise since 2003
Developer Cousins Properties broke ground on the 29-story Colorado Tower in downtown Austin, Texas, the city's first high-rise building since Cousins' completed the Frost Bank Tower a decade ago.
| Jun 17, 2013
DOE launches database on energy performance of 60,000 buildings
The Energy Department today launched a new Buildings Performance Database, the largest free, publicly available database of residential and commercial building energy performance information.
