マルチボディダイナミクス(MBD)による超高層建物用エレベータテールコードの振動抑制

抄録

Today, elevators have become indispensable means of transportation and important social infrastructures. In recent years, elevators have been used in taller and taller buildings, and the elevator travel distances have been lengthened. Further improvement of the safety, security, and comfort of elevators is always an important issue, and various measures and studies are being conducted, such as research on vibration of the car and main rope. The elevator has a tail cable (traveling cable), which plays the role of supplying electric power to the car and transmitting control signals for various information such as opening and closing doors and turning on lights, etc. The cable is suspended in a U-shape between the lower part of the car and the control panel in the middle of the elevator track. In elevators with long ascending and descending travel distances, the traveling cables are subject to large vibrations caused by ascending and descending of cars and low-frequency vibrations of the car, such as wind or earthquakes, etc., and may collide with, damage, or cause malfunctions of the equipment, components, etc. in the elevator track, which is an important problem. In Hirai's study, a 64-meter traveling cable was modeled by using multi-body dynamics (MBD), an even longer traveling cable is needed to adapt taller buildings. The objective of this study is to add control to the traveling cable to suppress its vibration as described above. In this report, the complex dynamics of a 281-meter traveling cable, which is longer than in previous studies, is modeled by using MBD. A guide is attached to the underside of the car to allow the traveling cable to move freely in the direction of building sway, and the suppression effect on the maximum displacement of the traveling cable when building sway occurs is investigated.