Elevator system and control method thereof

Abstract

An elevator system which comprises a plurality of elevators (100) each comprising: a car (8); a rope (7) connected to the car (8); and a control device (5). Rope resonance zones (1a, 1b, 1c) are set in a group management device (200) or the control devices (5). If building vibrations at a building vibration setting level or greater are detected and there is a rope resonance car, which is defined as a car (8) waiting at a stopping floor in a rope resonance zone (1a, 1b, 1c) for no less than a standby setting time, the group management device (200) moves a car (8) located outside of the rope resonance zones (1a, 1b, 1c) as an additional allocation car to the stopping floor where the rope resonance car is on standby.

Description

technical field [0001] The present invention relates to an elevator system including a plurality of elevators and a group management device that manages these elevators as a group, and a control method thereof. Background technique [0002] In general, it is known that low periodic shaking is continuously generated in high-rise buildings due to long-period vibrations such as earthquakes or strong winds. For example, in an elevator system with a long lifting stroke of the car, if the main rope swings due to the shaking of the building when the car stops at the lowest floor, even if the vibration amplitude of the main rope when the car starts to travel If the car is small, the car side part of the main rope will be shortened due to the movement of the car to the vicinity of the upper floor. Therefore, the frequency of the main rope is consistent with the resonance frequency of the car, and the vibration of the car will increase, which will make the ride feel more comfortable. ...

AI Technical Summary

Problems solved by technology

[0002] In general, low periodic shaking is known to continue to occur in tall buildings due to long-period vibrations such as earthquakes or strong winds

For example, in an elevator system with a long lifting stroke of the car, if the main rope swings due to the shaking of the building when the car stops at the lowest floor, even if the vibration amplitude of the main rope when the car starts to travel If the car is small, the car side part of the main rope will be shortened due to the movement of the car to the vicinity of the upper floor. Therefore, the frequency of the main rope is consistent with the resonance frequency of the car, and the vibration of the car will increase, which will make the ride feel more comfortable. become worse

Images