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Need a lift? New York firm designs
a high-tech car-transport system
By Deborah Snoonian, P.E.
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The car lift, or VRC, glows
softly, as if welcoming the vehicles it transports.
Image: Courtesy Roart |
Its an elevator! Its a material
lift! No, its the Vertical Reciprocating Conveyor (VRC),
a transporter custom-built for a vintage-car collector who
stores several vehicles in a two-story lot. Its designers,
the New York firm ROART, coined the moniker. (We still
dont really know what it means, admits project
architect Eran Shemesh.) Combining sleek materials, sensors
and actuators, and innovative digital signaling technologies,
one might call the VRC a 21st-century machine for moving.
The firm began the project by researching
the history of cars and driving, and principal Ran Oron ran
across an old black-and-white photo of an early auto race.
The client loved the idea of driving onto the lift and becoming
part of the life-size image. From that point forward, working
with the buildings architect, Derek Larson, we
thought of the VRC less like a lift and more like a pleasure
machinea mechanical device that would possess the same
technological ingenuity and design sophistication as the cars
it transports, Oron says.
Poetry in motion
The sites constraints dictated
many of the design decisions. The two-floor garage, only 15
feet wide and 100 feet deep, left no room for doors that slide
open to the side or pivot outward; for aesthetic reasons,
the architect eschewed garage-style rolling doors on tracks.
Instead, the firm designed doors and gates custom-manufactured
of stainless-steel mesh, powered by a system of sensors and
actuators that elevate and tilt each barrier out of the way.
The two gates are installed on the lift itself. When a gate
is raised, it slides up on recessed, multifaceted raceways
that force its upper and lower points to take separate paths
as the gate tilts into the cab. The doors, installed on the
buildings hoistways, take the opposite motion, sliding
first up and then tilting outward with the help of linear
ball-screw actuators. The motions are synchronized to an elegant
choreography, giving the visual effect of a giant pair of
scissors that moves in three dimensions. The speeds, trajectories,
and timing can be changed at will.
Five full-scale mock-ups of the doors
and gates, each with different geometries and movement trajectories,
were tested before the architects found the effect they were
satisfied with. We reviewed three options: a mechanical
system with chains and cables, a hydraulic system, and an
electrical system.
In the end, we needed the actuators to
make the motion smooth and reliably repetitive, says
Oron.
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