Elevator device

Abstract

An elevator device includes, as operation modes of the elevator device, an independent operation mode in which cars are caused to travel independently in order to prevent the cars from being too closeto one another, and a proximity synchronized operation mode in which the cars are caused to travel integrally in synchronization with one another in order to prevent the cars from being too far fromone another. When the operation mode is switched, one car brakes, the other car is caused to move nearer thereto or farther therefrom, switching of the operation mode is executed, and the braking is subsequently released.

Description

technical field [0001] The present invention relates to a multi-car type elevator apparatus in which a plurality of cars are installed in a common hoistway. Background technique [0002] In recent years, along with the increase in the height of buildings, it is required to increase the speed and increase the capacity of elevator devices, thereby increasing the amount of transportation. A double-deck elevator having two floors of cars is known as an elevator apparatus that meets such demands. In addition, there is also known a multi-car type elevator apparatus in which a plurality of cars independently travel in a common hoistway. [0003] However, although the double-deck elevator is suitable for a large amount of transportation during round-trip operation, it cannot increase the transportation volume of passengers when waiting on multiple floors due to lack of freedom of operation. [0004] On the other hand, since the movement of each car is restricted due to avoiding th...

AI Technical Summary

Problems solved by technology

[0009] Here, in the prior art, as described above, when the two cars are traveling in the same direction, it is necessary to pre-set the time difference at the start of travel on the assumption that the stop distance in an emergency situation will be extended as the speed increases. Yes, there is a problem of poor delivery efficiency

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