交流绕线式电动机拖动系统——法国BLM公司的专利技术

就目前国内所使用的船舶甲板机械而言,主要有电动式甲板机械和液压式甲板机械两类。大量的使用实践证实,电动式甲板机械优于液压式甲板机械。表1列出了法国BLM公司电动锚铰机和日本液压锚绞机的比较。表2列出了法国BLM公司可控硅A交流电动起货机与电动液压起货机的性能比较。     

船用甲板起重机噪声分析及控制措施

文章以船舶噪声要求日趋严格为背景,通过梳理船用甲板起重机噪声规范和标准要求,指出未来船用甲板起重机将受到规范或标准限制。在此基础上,以电动液压船用甲板起重机为目标,分析其机械和液压噪声来源。最后结合相关噪声控制原则和实施途径,提出了船用甲板起重机噪声控制措施。     

船舶液压甲板机械的维修保养

文章介绍了船舶液压机械在工作中经常出现的各种故障及其原因,并针对液压甲板机械的主要不同元件,详细讲述了对其进行维修和保养的方法和注意事项,以减少故障的发生及对船舶的伤害,确保机械在日常工作中的正常运行,并延长机械寿命,保障安全营运.     

浅谈集装箱电动吊具与液压吊具的区别

分别介绍了用于集装箱装卸的电动吊具与液压吊具的工作原理。将两者在能耗、维护成本、故障、性能等方面进行比较。通过分析比较得出结论:全电动集装箱吊具的性能,安全能替代液压吊具进行集装箱装卸作业,且降低使用和维修成本。     

世界上最大的绞车

据芬兰劳玛-雷波拉甲板机械厂1985年9月№3简讯报道,世界上最大的高压液压和电动绞车装置(参见本期封底)正在该厂制造。劳玛-雷波拉甲板机械厂是一家立足于近海石油开发市场的大型近海起重部和石油平台定位用的高压液压和电动绞车装置的制造厂家。最近为两艘由丹麦一家船厂建造的锚作、拖曳、供应、救助和消防多用途工作船制造交-直流电动绞车机组就是一例。     

液压克令吊常见故障分析及维修管理

甲板液压克令属故障多发系统，作者结合多年的工作经验，对液压克令系统常见故障及原因进行了分析，据此提出了维修管理原则。     

并联恒压式液压泵的功率调节

船舶液压甲板机械日趋高压化（目前一般工作压力≥20MPa），以便减小液压油流量，缩小液压元件和管路的尺寸，降低成本和方便维修。     

船舶液压系统内部泄漏产生的原因和消除的措施

防止船舶甲板机械液压油泄漏,不但要提高液压系统的密封性能和元件的精密度,而且更重要的是对系统的日常维护保养,正确的管理措施直接影响船舶液压系统工作安全性和使用寿命。针对液压系统泄漏故障较难防治的问题,用机理分析的方法,探讨泄漏的根源与影响因素及其危害,提出了建设性预防措施,与同行共勉。     

舱盖板液压系统故障案例解析

船舶修理企业在维修某些液压设备故障时往往需要拆卸一些设备以便于更换其中的零部件,但如果没有做出精准的故障诊断,往往会导致其它新的系统故障。文章以某散货轮舱盖板液压系统故障为例,对该液压系统故障产生的原因,故障分析的过程和解决方法进行详尽的解读,对从事甲板机械维修的人员具有一定的参考意义。     

甲板机械的综合液压试验台

甲板机械制造厂生产的各种甲板机械应在某些专门的试验台上进行试验,必须间断地提升和放下相应的载荷。这些试验台要占用大量的生产场地,并阻塞车间,同时,在整个试验期间通常还要求使用桥式吊车。此外,在这些试验台上进行甲板机械的试验要花很大的工作量,同时,在操作中又不安全。为了显著地减少试验台的数量、缩短甲板机械试验所需的时间、形成稳定的而不是变化的负载,必须研制综合性的液压试验台。这种试验台已在制造和     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

某海港码头的撞损修复

依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。