| Summary: | 碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 98 === Owing to the multiple sources and transmission paths of vibration existed in machinery-roomless elevators,the vibrations of the cage floor of such type elevators are frequency encountered.In this thesis,the vibration power flow theory and the four-pole parameter method are used to rank the sequence of majority of the path of vibration transmission,then the countermeasure of the vibration attenuation can be undertaken accordingly.The main source is the winch in operation and the main transmission path is the guide rail of the cage and cables respectively.For the purpose of vibration improvement,the FEA software ANSYS is utilized for the mobility spectra simulation of the elevator isolation systems by considering three different types of isolators with the spring constant: 1900×103N/m、66.15×103N/m、355.74×103N/m、45.08×103N/m,respectively and three different spans of the machinery supporting plateform :0.6m,0.8m and 1.0m respectively.In which the best isolation system is Type 3 isolator together with a 0.6m spam platform.
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