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
Sponsored | BD+C University Course | Jan 12, 2022
Total steel project performance
This instructor-led video course discusses actual project scenarios where collaborative steel joist and deck design have reduced total-project costs. In an era when incomplete structural drawings are a growing concern for our industry, the course reveals hidden costs and risks that can be avoided.
University Buildings | Jan 11, 2022
Designing for health sciences education: supporting student well-being
While student and faculty health and well-being should be a top priority in all spaces within educational facilities, this article will highlight some key considerations.
Green | Jan 10, 2022
The future of regenerative building is performance-based
Why measuring performance results is so critical, but also easier said than done.
Senior Living Design | Jan 5, 2022
Top Senior Living Facility Design and Construction Firms
Perkins Eastman, Kimley-Horn, WSP USA, Whiting-Turner Contracting Co., and Ryan Companies US top BD+C's rankings of the nation's largest senior living sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.
Giants 400 | Jan 3, 2022
2021 Government Sector Giants: Top architecture, engineering, and construction firms in the U.S. government buildings sector
Stantec, Jacobs, Turner Construction, and Hensel Phelps top BD+C's rankings of the nation's largest government sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.
Architects | Dec 20, 2021
Digital nomads are influencing design
As our spaces continue to adapt to our future needs, we’ll likely see more collaborative, communal zones where people can relax, shop, and work.
Architects | Dec 17, 2021
What I wish I had learned in architecture school
Bradford Perkins, FAIA, offers a 3-point plan for upgrading architecture education.
Urban Planning | Dec 15, 2021
EV is the bridge to transit’s AV revolution—and now is the time to start building it
Thinking holistically about a technology-enabled customer experience will make transit a mode of choice for more people.
Sports and Recreational Facilities | Dec 15, 2021
Trends in sports stadium construction, with Turner Construction's Dewey Newton
Turner Construction's Dewey Newton discusses trends in sports stadium renovation and construction with BD+C's John Caulfield. Newton is a Senior Vice President who heads up Turner Construction’s Sports Group.
Healthcare Facilities | Dec 15, 2021
COVID-19 has altered the speed and design of healthcare projects, perhaps irrevocably
Healthcare clients want their projects up and running quicker, a task made more complicated by the shortage of skilled labor in many markets.