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 18, 2013
SOM, CASE team up to launch crowd-sourced apps library
SOM and CASE have formally launched AEC-APPS, the first crowd-sourced, web-based library for applications used by architects, engineers and construction professionals. This is a one-of-a-kind initiative in the AEC Industry and is a non-profit online community that allows digital tool users and toolmakers to share ideas, tips and resources.
| Apr 18, 2013
Calatrava projects encounter issues with water, structure, Guardian says
A dozen years after Calatrava built the spectacular Ysios winery in the rainy Alava region of northern Spain, the building's dramatic, undulating roof continues to let in the damp.
| Apr 17, 2013
Frank Lloyd Wright's Park Avenue showroom demolished
New York loses another architectural gem by Frank Lloyd Wright as new owner razes auto showroom.
| Apr 17, 2013
First look: Renzo Piano's glass-domed motion pictures museum
The Academy of Motion Picture Arts and Sciences last week released preliminary plans for its $300 million Academy of Motion Picture Arts and Sciences museum in Los Angeles, designed by Renzo Piano and local architect Zoltan Pali.
| Apr 16, 2013
5 projects that profited from insulated metal panels
From an orchid-shaped visitor center to California’s largest public works project, each of these projects benefited from IMP technology.
| Apr 16, 2013
AIA/NCARB survey shows rosier picture for emerging professionals
In 2010, the AIA/NCARB Internship and Career Survey of emerging professionals took a snapshot of young designers during a time ofintense economic contraction, when they were often the first to suffer. But in the two years since, emerging professionals have begun experiencing a rebound.
| Apr 15, 2013
Seattle school certified as world's fourth Living Building
Bertschi School, an independent elementary school in the Capitol Hill neighborhood of Seattle, Wash., is now home to the first Living Building on the West Coast and the world’s fourth fully-certified Living Building.
| Apr 15, 2013
Advanced lighting controls and exterior tactics for better illumination - AIA/CES course
To achieve the goals of sustainability and high performance, stakeholders in new construction and renovation projects must rein in energy consumption, including lighting. This course presents detailed information about lighting control strategies that contribute to energy efficient buildings and occupant well-being, as well as tips for lighting building exteriors effectively and efficiently.
| Apr 15, 2013
eBay, Microsoft, Walt Disney World among keynote speakers for 2013 SMPS Conference, July 31 – August 2 in Orlando
The Society for Marketing Professional Services (SMPS) is pleased to announce the keynote speakers for ?Build Business: Dream Big!,? its 2013 conference to be held July 31 – August 2 at the Walt Disney World® Swan and Dolphin in Orlando.
| Apr 15, 2013
Using software and the power of the cloud to connect your back office to your field operations [webinar]
This webinar will focus on a new software subscription service that will help construction companies, general and specialty contractors connect their back office infrastructure with all of their field operations. The service will help capture, manage and report on the progress of existing construction jobs and help in the planning of new ones.
