船舶动力设备及推力轴承集成隔振系统设计

摘要

提出将船舶动力装置及推力轴承安装在公共基座上进行集成隔振,建立集成隔振系统的理论模型,重点分析了螺旋桨静态推力作用下隔振系统的位移特性,并研究船舶倾斜摇摆工况下系统主要设计参数对推力轴承位移特性与系统固有频率的影响.优化设计计算结果表明,船舶静态及准静态工况下,集成隔振系统位移较小,对具有位移补偿功能的推力轴承具有设计参考意义；主要设计参数对系统固有频率影响较小,能够有效隔离推进轴系振动.%A design concept of integrated vibration isolation system for the ship's power plant and thrust bearing which are fixed on the public base is provided. Through the established theoretical model of integrated vibration isolation system, the displacement characteristics of vibration isolation system by the action of the propeller static thrust, and the influence of main designing parameters on displacement characteristics of thrust bearing and natural frequency of the system under the condition of ship tilts are analyzed. The optimizing and computing results show that the displacement of vibration isolation system is small under the ship static and approximate static conditions, and has the design significance to thrust bearing with the function of displacement compensation. Besides,the influence of main designing parameters on natural frequency of the system is low so that the system can isolate the shaft vibration effectively.