Applications
6.3.3 Parking Tower Chain Large conveyance
Application Example Shortage of parking in large cities created a demand for carousel-type (verti- cal-rotation) multilevel parking, that first appeared in Japan in 1962 (Figure 6.17). Tower parking lots permit the storage of many vehicles (usually more than 30 cars) in a small space. Over the years, tower parking has become increasingly popular. Currently there are more than 10,000 of them in Japan. Parking Tower Chain supports and rotates the cage containing the vehicle. As an interesting note: Elevator parking garages, which use transmission roller chains or wire ropes to raise and lower the vehicles, are increasing in number. But vertical-rotation garages are still the majority. Construction and Features There are only a few manufacturers producing parking tower systems. However, each manufacturer produces a specific design. Figure 6.18 shows an example of Parking Tower Chain. The entire assembly consists of chain, attachments, and side rollers. The chain receives tension, which can be summarized as follows: Chain tension = weight of automobiles and cages + weight of the chain + friction on the side roller + tension from take-up.
Figure 6.17 Vertical Rotation Parking Elevator
Figure 6.18 Example of Parking Tower Chain
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