抄録
According to multistory building increase, the number of elevators tends to increase. In this case, also the space needed for hoistway or machine room increases, and as a result the effective floor space of the building decreases. In a common elevator (single deck elevator), there is one machine for one cab, but in a double deck elevator there is only one machine for two cabs, therefor the space needed for transportation can be reduced. However, in recent building design, there are a lot of cases that the height between floor and floor is not equal. In actual double deck elevator, the upper car and the lower car are fixed to car frame and it cannot cope with the difference between each floor. We have developed a Super Double Deck Elevator, in which upper cab and lower cab can move coping with the difference between each floor.
