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
Multifamily Housing | Feb 2, 2023
St. Louis’s first transit-oriented multifamily development opens in historic Skinker DeBaliviere neighborhood
St. Louis’s first major transit-oriented, multi-family development recently opened with 287 apartments available for rent. The $71 million Expo at Forest Park project includes a network of pathways to accommodate many modes of transportation including ride share, the region’s Metro Transit system, a trolley line, pedestrian traffic, automobiles, and bike traffic on the 7-mile St. Vincent Greenway Trail.
Giants 400 | Feb 2, 2023
2022 Convention Center Sector Giants: Top architecture, engineering, and construction firms in the U.S. convention and conference facilities sector
Clark Group, EUA, KPFF, Populous, TVS, and Walter P Moore top BD+C's rankings of the nation's largest convention and conference facilities architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Multifamily Housing | Feb 1, 2023
Step(1) housing: A new approach to sheltering unhoused people in Redwood City, Calif.
A novel solution to homelessness will open soon in Redwood City, Calif. The compact residential campus employs modular units to create individual sleeping units, most with private bathrooms. The 240 units of housing will be accompanied by shared services and community spaces. Instead of the congregate dorm-style shelters found in many U.S. cities, this approach gives each resident a private, lockable, conditioned sleeping space.
Codes and Standards | Feb 1, 2023
New Jersey to allow private firms to conduct construction inspections
New Jersey recently passed a law that will allow towns to supplement construction code enforcement with help from the private sector. The legislation, which received bipartisan support, also allows municipalities to enter into shared service agreements with neighboring towns for construction inspections.
Sports and Recreational Facilities | Feb 1, 2023
University of Houston opens 'game changer' wellness center at downtown campus
The University of Houston-Downtown (UHD) recently opened its new Wellness & Success Center (WSC). The $39 million, 75,000 sf facility greatly improves the quality of the school’s exercise programs and areas dedicated to them. It also establishes a dynamic core and recognizable landmark for fostering and nurturing an on-campus community, according to a news release from SmithGroup, which designed the building along with HarrisonKornberg Architects.
Giants 400 | Feb 1, 2023
2022 Cultural Facilities Giants: Top architecture, engineering, and construction firms in the U.S. cultural facilities sector
Populous, DLR Group, KPFF, Arup, and Turner Construction head BD+C's rankings of the nation's largest cultural facilities sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report. Building types include museums, public libraries, performing arts centers, and concert venues.
Giants 400 | Jan 31, 2023
2022 Retail Giants: Top architecture, engineering, and construction firms in the U.S. retail building sector
Gensler, CallisonRTKL, Kimley-Horn, Henderson Engineers, Whiting-Turner Contracting, and Turner Construction top BD+C's rankings of the nation's largest retail sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Giants 400 | Jan 31, 2023
2022 Government Sector Giants: Top architecture, engineering, and construction firms in the U.S. government buildings sector
Gensler, Jacobs, Hensel Phelps, and Page top BD+C's rankings of the nation's largest government sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Healthcare Facilities | Jan 31, 2023
How to solve humidity issues in hospitals and healthcare facilities
Humidity control is one of the top mechanical issues healthcare clients face. SSR's Lee Nordholm, PE, LEED AP, offers tips for handling humidity issues in hospitals and healthcare facilities.
University Buildings | Jan 30, 2023
How wellness is reshaping college recreation centers
Moody Nolan, a specialist in the design of college recreation centers, has participated in the evolution toward wellness on college campuses.
