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 | Nov 9, 2021
Pelli Clarke Pelli Architects announces renaming
Founded by Cesar Pelli with partners Fred Clarke and Diana Balmori in 1977, the firm began its legacy as Cesar Pelli & Associates at its first office in New Haven, Connecticut.
Movers+Shapers | Nov 7, 2021
Passage of $1.2 trillion infrastructure bill expected to spur stronger construction activity
AEC firms see federal investment as historic
Architects | Nov 2, 2021
What rugby can teach us about designing the workspace of the future
Two veteran workplace designers offer a sports-based analogy for designing agile spaces to meet the needs of an evolving workforce.
Adaptive Reuse | Nov 1, 2021
CallisonRTKL explores converting decommissioned cruise ships for housing
The rapid increase in cruise ship decommissioning during the last 18 months has created a unique opportunity to innovate and adapt these large ships.
Sustainability | Oct 28, 2021
Reducing embodied carbon in construction, with sustainability leader Sarah King
Sustainability leader Sarah King explains how developers and contractors can use the new EC3 software tool to reduce embodied carbon in their buildings.
Cladding and Facade Systems | Oct 26, 2021
14 projects recognized by DOE for high-performance building envelope design
The inaugural class of DOE’s Better Buildings Building Envelope Campaign includes a medical office building that uses hybrid vacuum-insulated glass and a net-zero concrete-and-timber community center.
AEC Tech | Oct 25, 2021
Token Future: Will NFTs revolutionize the design industry?
How could non-fungible tokens (NFTs) change the way we value design? Woods Bagot architect Jet Geaghan weighs risk vs. reward in six compelling outcomes.
Giants 400 | Oct 22, 2021
2021 Retail Giants: Top architecture, engineering, and construction firms in the U.S. retail building sector
Gensler, CallisonRTKL, Kimley-Horn, and Whiting-Turner top BD+C's rankings of the nation's largest retail sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.
Giants 400 | Oct 22, 2021
2021 Industrial Sector Giants: Top architecture, engineering, and construction firms in the U.S. industrial buildings sector
Ware Malcomb, Clayco, Jacobs, and Stantec top BD+C's rankings of the nation's largest industrial buildings sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.
| Oct 22, 2021
The Next Chapter For 147-Year-Old Shepley Bulfinch
Boston-based architecture, planning, and interior design firm Shepley Bulfinch recently named Angela Watson, FAIA, as its President and CEO. Watson sat down with BD+C's John Caulfield to discuss her strategic plan, which emphasizes perspective and collaboration.
