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
| Apr 12, 2011
Rutgers students offered choice of food and dining facilities
The Livingston Dining Commons at Rutgers University’s Livingston Campus in New Brunswick, N.J., was designed by Biber Partnership, Summit, N.J., to offer three different dining rooms that connect to a central servery.
| Apr 12, 2011
Retail complex enjoys prime Abu Dhabi location
The Galleria at Sowwah Square in Abu Dhabi will be built in a prime location within Sowwah Island that also includes a five-star Four Seasons Hotel, the healthcare facility Cleveland Clinic Abu Dhabi, and nearly two million sf of Class A office space.
| Apr 12, 2011
Luxury New York high rise adjacent to the High Line
Located adjacent to New York City’s High Line Park, 500 West 23rd Street will offer 111 luxury rental apartments when it opens later this year.
| Apr 12, 2011
College of New Jersey facility will teach teachers how to teach
The College of New Jersey broke ground on its 79,000-sf School of Education building in Ewing, N.J.
| Apr 12, 2011
Mental hospital in Boston redeveloped as healthcare complex
An abandoned state mental health facility in Boston’s prestigious Longwood Medical Area is being transformed into the Mass Mental Health Center, a four-building mixed-use complex that includes a mental health day hospital, a clinical and office building, a medical research facility for Brigham and Women’s Hospital, and a residential facility.
| Apr 12, 2011
Miami courthouse design does justice to children and the environment
Suffolk Construction broke ground recently for the Miami-Dade County Children’s Courthouse, a $328 million project the firm has a 30-month contract to complete.
| Apr 12, 2011
Long-awaited San Francisco center is music to jazz organization’s ears
After 28 years, SFJAZZ is getting its first permanent home. The San Francisco-based nonprofit, which is dedicated to advancing the art of jazz through concerts and educational programs, contracted local design firm Mark Cavagnero Associates and general contractor Hathaway Dinwiddie to create a modern performance center in the city’s Hayes Valley neighborhood
| Apr 12, 2011
Entrance pavilion adds subtle style to Natural History Museum of Los Angeles
A $13 million gift from the Otis Booth Foundation is funding a new entrance pavilion at the Natural History Museum of Los Angeles County. CO Architects, Los Angeles, is designing the frameless structure with an energy-efficient curtain wall, vertical suspension rods, and horizontal knife plates to make it as transparent as possible.
| Apr 12, 2011
BIM Grows Up: Separating Hype from Reality in a 3D World
While BIM adoption still lags in both design and construction, some enterprising owners, architects, and contractors are unlocking the potential of this dynamic technology.
| Apr 12, 2011
Metal cladding: Enhancing design with single-skin panels, MCMs, and IMPs
Single-skin metal panels, metal composite panels, and insulated metal panels can add both aesthetic and functional value to your projects, if you use them correctly.
