【作者】 廖勇；

【导师】 孙玉清；

【作者基本信息】 大连海事大学 ， 轮机工程， 2010， 硕士

【摘要】 救生设备是船舶法定安全设备,而救生艇和救生艇收放装置是救生设备的重要组成部分,承担着在紧急情况下保证人身安全的重任。随着我国航运贸易和海上开发活动的日益增多,救生艇作为海上遇险时的一种重要逃生设备,其性能和安全收放的可靠性越来越受到关注和重视。在很多时候,救生艇需要在复杂的高海况下回收。这种情况下波浪对救生艇、母船的影响十分明显,使得回收的危险性和难度增大。这就对回收装置提出了更高的要求,如增加波浪补偿功能等。国外在上世纪80年代就开始了在这方面的研发并日臻成熟,我国在这方面的起步较晚,与国外差距较大。为促进我国船舶产业的发展,因此很有必要对这一课题进行深入的研究。本文对用于高海况下的救生艇吊放装置整个系统进行了细致的分析研究,发现要实现高海况下救生艇的安全收放就要对波浪对救生艇的作用进行补偿。波浪补偿的目的是减轻波浪对救生艇安全回收的影响。实现波浪补偿就需要保证起吊绳索保持张紧,防止绳索松弛,可通过控制绳索上的恒张力实现；通过对比各种吊放装置的结构、性能,并选择了能适用于高海况下救生艇回收的吊架结构、波浪补偿方式。在此基础上,分析了高海况下波浪的运动情况,以及在高况下波浪补偿救生艇吊放装置应该具有的技术指标,为下一步的波浪补偿起艇绞车的设计提供了依据。以某一具体的救生艇为例,对起艇绞车系统进行了详细的分析计算,设计出了具有波浪补偿功能的起艇绞车系统,并对元件进行了选型。通过建立系统的部分数学模型并仿真,证实了设计的波浪补偿起艇绞车系统具有良好的性能,能够实现在高海况下进行波浪补偿,可以保证救生艇的安全回收。这为波浪补偿起艇绞车的开发提供了理论支持。更多还原

【Abstract】 Life-saving appliances are statutory safety equipments in ships, while lifeboat and boat-lifting devices are the important parts of the life-saving appliances which take the important responsibility of keeping the persons from the danger in emergence. With the growth of our country’s shipping trade and ocean exploitation, as one kind of important life-saving appliances, the lifeboat’s performance and reliability of the boat-lifting device draw more attention. In many times, life-boats should be lifted at complicated and abominable sea state. In this condition, sea-wave affects the life-boats and the boat apparently, which makes the growth of danger and difficulty of boat-lifting. It puts forward higher demand on boat-lifting device, such as adding the function of wave compensation. External research and exploitation in this field began from 1980’s, and our country’s research is later, there is long distance to catch up with the oversea research. In order to accelerate the development of our countries’ ship-building industry, it is necessary to take deep research on this subject.This paper takes research on boat-lifting device system which is used at abominable sea state, and finds that it should be compensate the effect on lifeboat caused by the wave in order to realize the safety lifting at abominable sea state. The purpose of wave compensation is to alleviate the influence on lifeboat. It is necessary to keep the falls tight in order to realize the wave compensation by keeping the constant tension of the falls. According to comparing the structure and the performance of many kinds of boat-lifting device, this paper gives the structure of the davit and wave compensation way which realize the safety lifting at abominable sea state. Then it analyses the wave’s movement and technical quota of boat-lifting device at abominable sea state which supply the foundation to the following design of wave-compensation boat-lifting winch. Taking some lifeboat for example, this paper analyses and computes the boat-lifting winch in detail and designs the wave compensation boat-lifting winch system, at the same time chooses the components. By building some parts of model and simulating, it proves that the designed system has good performance and realizes wave compensation at abominable sea state, so it can promise the safe recovery of the lifeboat. This paper gives theory basis to the exploitation of the wave compensation boat-lifting winch.更多还原