碩士 / 國立高雄海洋科技大學 / 輪機工程研究所 / 93 / Abstract
Since larger main engine has been adopted on the largest vessel, it also needs a long distance, that is, from propeller to main engine aftermost end. To steady and support the shaft, more intermediate bearings are set on line shaft. Increasing the number of intermediate bearing does not only mean high cost for building but will also make the shafting system stiffer which is unfavorable for adjustment. When vessel body is deflected due to the variation of the temperature, heavy loads or rough sea conditions, there is a high deviation on bearing load. This condition will lead to some bearings to be over loaded and others to be no load thus may cause trouble to the system.
For long span, the load on each bearing will increase and lateral vibration may also occur on the shafting. If the amplitude increases with revolution speed, some other problem like vibration may arise. So making decision about number of bearing and long span is very important and needs careful planning.
This dissertation confers with the deviation between two and one intermediate bearings on line shaft of a 1,500 TEU container ship and it is an optimization procedure making both bearing in a position in which load is evenly distributed and keeping RIN low. To check the accuracy of this calculation, the Jack up test was carried out and the record is attached for reference. Besides, for a hull deflection considering the compensated countermeasures is recommended for good shafting alignment design.
| Identifer | oai:union.ndltd.org:TW/093NKIMT484004 |
| Creators | Jeremy C.C. Wang, 王傳全 |
| Contributors | Yi-Wen, Chiou, 邱逸文 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 91 |
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