Multi stories car park type 3 : With twin inclined conveyance second car trolley is attached to decend while first car trolley is decending. This way two elevator trolleys are used at the same time, one on each side of the overhead traction pulley by creating locomotion alternately reversing the direction of the drive mechanism.
The elevator is driven along rails, carrying the automobile in the inclined hoist way by means of over head traction to desired parking floor. The elevator trolley is interposed between two rails, so that the space required to accommodate the hoist way is minimized
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The elevator is having the platform of rigid surface maintained in horizontal position, so that the automobiles from any floor could be driven in and out the elevator by the driver, when it reaches the designated floor. A close tolerance is maintained between the elevator platform sill and the sill of open space of the floor in hoist way at any floor, serving as the drivable access to parking spaces on the required floor.
This method is suitable for handling a large fleet of frequent trafic. In this design another elevator is riding on opposite direction similar to funicular as shown below. This way two elevator trolleys are used at the same time, one on each side of the overhead traction pulley by creating locomotion alternately reversing the direction of the drive mechanism.
