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 1,000Ā°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 21, 2014
Narrowing the field: Stirling Prize shortlist announced
The list includes first-time nominees Mecanoo and Renzo Piano Building Workshop, as well as previous winners Zaha Hadid Architects and Feilden Clegg Bradley Studios.Ā
| Jul 21, 2014
Designing the process of leadership transition
Transition planning can be one of the more complex challenges that firms face. Effective plans begin by determining the gap between a firmās current state and the future it envisions for itself. SPONSORED CONTENT
| Jul 21, 2014
16 utility questions to answer during your building project
We need electricity to power our building projects, along with water and gas and a faultless sanitation system. Thatās what we think about when we think about utility requirements for our building project, but are we missing something? SPONSORED CONTENT
| Jul 21, 2014
Commercial real estate development growing at strongest pace since recovery began: NAIOP report
Industrial, warehousing, office, and retail sectors see strong gains; Texas leads the nation in construction-value stats.
| Jul 21, 2014
Economists ponder uneven recovery, weigh benefits of big infrastructure [2014 Giants 300 Report]
According to expert forecasters, multifamily projects, the Panama Canal expansion, and the petroleum industryās āshale galeā could be saving graces for commercial AEC firms seeking growth opportunities in an economy thatās provided its share of recent disappointments.
| Jul 21, 2014
Workplace trends survey reveals generational patterns in office use
Data analysis fromĀ Manciniā¢Duffy indicates significant variations among age cohorts in the workplace.
| Jul 20, 2014
IPD contract saves time and money for cancer center [2014 Building Team Awards]
Partners share the risk and reward of extreme collaboration on this LEED Silver project, which relies heavily on Lean principles.
| Jul 20, 2014
Why every major U.S. city should be nurturing āInnovation Hubsā
Today, more than ever, tech districts are the key to economic growth for metro markets. A new report from the Brookings Institution calls tech hubs the superchargers of innovation economies and creators of highly coveted tech jobs.
| Jul 18, 2014
Contractors warm up to new technologies, invent new management schemes [2014 Giants 300 Report]
āUAV.ā āLATISTA.ā āCMST.ā If BD+C Giants 300 contractors have anything to say about it, these new terms may someday be as well known as āBIMā or āLEED.ā Hereās a sampling of what Giant GCs and CMs are doing by way of technological and managerial innovation.