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
Steel Buildings | Feb 10, 2015
Korean researchers discover 'super steel'
The new alloy makes steel as strong as titanium.
Architects | Feb 9, 2015
The generalist architect vs. the specialist architect
The corporate world today quite often insists on hiring specialists, but the generalists have an intrinsic quality to adapt to new horizons or even cultural shifts in the market, writes SRG Partnership's Gary Harris.
Museums | Feb 9, 2015
Herzog & de Meuron's M+ museum begins construction in Hong Kong
When completed, M+ will be one of the first buildings in the Foster + Partners-planned West Kowloon Cultural District.
Multifamily Housing | Feb 9, 2015
GSEs and their lenders were active on the multifamily front in 2014
Fannie Mae and Freddie Mac securitized more than $57 billion for 850,000-plus units.
BIM and Information Technology | Feb 8, 2015
BIM for safety: How to use BIM/VDC tools to prevent injuries on the job site
Gilbane, Southland Industries, Tocci, and Turner are among the firms to incorporate advanced 4D BIM safety assessment and planning on projects.
Museums | Feb 6, 2015
Tacoma Art Museum's new wing features sun screens that operate like railroad box car doors
The 16-foot-tall screens, operated by a hand wheel, roll like box car doors across the façade and interlace with a set of fixed screens.
Office Buildings | Feb 6, 2015
6 factors steering workplace design at financial services firms
Grossly underutilized space and a lack of a mobility strategy are among the trends identified by HOK based on its research of 11 top-tier financial services firms.
Cultural Facilities | Feb 6, 2015
Architects look to ‘activate’ vacant block in San Diego with shipping container-based park
A team of alumni from the NewSchool of Architecture and Design in San Diego has taken over a 28,500-sf empty city block in that metro to create what they hope will be a revenue-generating urban park.
Multifamily Housing | Feb 6, 2015
Fannie Mae to offer lower interest rates to LEED-certified multifamily properties
For certified properties, Fannie Mae is now granting a 10 basis point reduction in the interest rate of a multifamily refinance, acquisition, or supplemental mortgage loan.
Airports | Feb 6, 2015
Zaha Hadid-designed terminal in Beijing will be world’s largest
The terminal will accommodate 45 million passengers per year, and will be a hub for both air and rail travel.