Elevators & Escalators
Quality in Motion
Spiral Escalators
The Forum Shops at Caesars
Breath-taking artistic design delivers added-value
Combined with highly advanced building design, spiral escalators enhance architectural structures by delivering added-value and artistic appeal. The unique "interior in motion" attraction produces a special space and time for tenants and visitors alike to enjoy. Installed in facilities such as museums or art museums, the escalators give a three-dimensional perspective to traditional buildings and exhibits, further confirming their high affinity in architectural design.
An Architectural Wonder
A vision of future of modern architectural space design made feasible today. In order to provide the space that building owners could only once dream of, Mitsubishi Electric developed the world's first spiral escalators. Carefully intermixing vertical and rotational movements, an elegant arch is created utilizing one-and-only escalator technologies no other company has been able to achieve. The three-dimensional motion creates an expansive panoramic view for users, and the innovative design transforms the area into an unprecedented architectural masterpiece. An artisan skill called Takumi (in Japanese) is utilized, where the maker demands perfection and refuses to compromise down to the smallest detail. All of this to ensure satisfaction to the customer in the joy of ownership and welcome visitors with an experience that is exciting and unforgettable.


  Brochure (5.6MB)
=Technologies=
Escalators drawing an arc once said
to be physically impossible.
There is a reason that this could
only be achieved by Mitsubishi
Electric.
Escalators drawing arcs unique in appearance.
The rotational moment is complex in form, with the longitudinal movement closely intertwined.
To accomplish this, although the concept had long existed around the world, it had not been successfully achieved. Then, in 1985, Mitsubishi Electric successfully developed what is now called the "Spiral Escalator."
Today, 31 years later, Mitsubishi Electric remains the only company to manufacture spiral escalators.
At first glance, these escalators appear to have curvatures without any special features.
But the arcing structures achieved use elaborate, sophisticated technologies only capable of being realized applying the design, manufacturing, and installation skills of expert engineers.

Design

 Discovery of the "Centralized motion method" principle

Most curving escalators once proposed around the world were based on methods for movement in a concentric circle. But none ever made it to market. Even though the speed of horizontal movement when creating a semi-circle is regular, making it possible to move concentrically, the structural problem is that movement in the horizontal direction slows to the extent that there is vertical movement in the inclined section. Mitsubishi Electric overcame this issue by developing the "centralized motion method," in which the central point moves in stages based on the angle of incline.



 Innovation supporting 3D movement

Unique technologies were required to achieve the complex three-dimensional (3D) movement of the spiral escalator. For example, a special chain capable of supporting a wide variety of angles required for the spiral orbit was introduced to move the steps. Horizontal rollers are installed on the outer-side of the chain, enabling the structure to manage the inward force generated by the arching configuration. This enables the escalator steps to move along the fixed orbital plane with high accuracy.



Manufacturing

 Elaborate processing only possible using manual labor

As spiral escalators require complicated three-dimensional movement, various components must be processed into unique shapes such as curved trusses and steps with arch-like grooves. The complex shape of the track makes it one of the parts that requires a meticulous process utilizing intricate manufacturing technologies. Using special tools and original forming know-how, technicians finish the tracks manually by repeatedly performing a series of bending and twisting processes. Even when applying three-dimensional torsion, a final accuracy of 0.1mm or less is ensured, thus realizing smooth, precise motion.



Installation

 Highly precise installation

Specialized installers assemble the truss by connecting up to 6,000 custom-shaped parts. After installation, multiple quality assurance checks are carried out to ensure that the finished product embodies Mitsubishi Electric quality in the most detailed areas.



=Installation Examples=
Entrance Plan
Symbolizing and accenting spaciousness, spiral escalators dramatically portray an increased field of vision. The principal objective of the layout is to create a space where people can stop, rest and communicate, such as a lobby, lounge, or public area.

 
Open-air Plan
Installation at the center of a structure creates an open-ceiling space that improves the atmosphere and impresses users with an expansive breadth of vision. It is also possible to use the area as an element for promoting window shopping and to announce special events.

 
Corner Plan
Installation in a corner or along the wall of a building effectively frees up the central floor area for other uses. This is an excellent choice for a building housing major retailers or an art gallery.

 
Plaza Plan
An elegant entrance with open space is easily achievable by interweaving space and arching curves. Ideal for creating a comfortable place for people to meet or various other purposes, and improving building name value and adding value to the building structure itself.

 
Multiple plan
A truly panoramic view can be achieved through consecutively linked layouts. This gives the appearance of a huge objet d'art, overflowing with a sense of opulence.

 

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