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
Architects | Sep 24, 2015
Supertall buildings vie for dominance along Chicago’s skyline
The latest proposals pit designs by Rafael Viñoly, Jeanne Gang, and Helmut Jahn.
Architects | Sep 24, 2015
From Gehry to the High Line: What makes a project a game-changer?
Each year, there are a handful of projects that significantly advance the AEC industry or a particular building type. Send us your game-changing projects for BD+C’s January 2016 special report.
Cultural Facilities | Sep 24, 2015
Bakpak Architects' 'pottery courtyard' concept in Poland incorporates local heritage
The multifunctional building proposed for Rzeszow, Poland, looks like it was handcrafted on a potter’s wheel.
Modular Building | Sep 23, 2015
SOM and DOE unveil 3D-printed, off-the-grid building
The Additive Manufacturing Integrated Energy (AMIE) building features a high-performance shell with a photovoltaic roof and built-in natural gas generator.
Airports | Sep 23, 2015
JFK Airport's dormant TWA terminal will be reborn as a hotel
After 15 years of disuse, the Googie architecture-inspired TWA Flight Center at New York’s John F. Kennedy International Airport will be transformed into a hotel. Gizmodo reports that the city’s Port Authority chose a renovation proposal from Jet Blue this week.
Architects | Sep 23, 2015
Architecture billings dip in August, but no 'cause for concern' says AIA economist
The American Institute of Architects reported the August ABI score was 49.1, down from a mark of 54.7 in July. This score reflects a slight decrease in design services.
Sports and Recreational Facilities | Sep 21, 2015
Tokyo Olympic Stadium saga ends for Zaha Hadid
After resubmitting a bid, the firm will not design the main venue for the 2020 Olympics after all.
University Buildings | Sep 21, 2015
6 lessons in campus planning
For campus planning, focus typically falls on repairing the bricks and mortar without consideration of program priorities. Gensler's Pamela Delphenich offers helpful tips and advice.
Museums | Sep 21, 2015
Ma Yansong and Jeanne Gang revise Chicago lakefront Lucas Museum
New renderings of the proposed Lucas Museum show a scaled-down building on more green space.
Designers | Sep 21, 2015
Can STEAM power the disruptive change needed in education?
Companies need entrepreneurial and creative workers that possess critical thinking skills that allow them to function in collaborative teams. STEAM (science, technology, engineering, arts, and mathematics) education might be the solution.