自动化轨道式龙门起重机定位测量系统

自动化集装箱码头通过定位测量系统,测量堆场内所有货物及装卸设备在堆场坐标系统中的位置,实现岸桥、起重机、搬运小车的自动化控制。以轨道式龙门起重机为例,从大车机构定位、小车机构定位、起升机构定位、吊具位置检测、集装箱位置检测等方面阐述了定位系统的功能及作用,为自动化集装箱码头的建设提供参考。     

自动化集装箱码头双小车岸桥主小车作业效率优化

正自动化已成为当今集装箱码头发展的新趋势,其在很大程度上能够提高码头作业效率;但我国自动化集装箱码头发展还处于起步阶段,进一步提高作业效率仍是首要任务。作为集装箱码头重要的装卸设备之一,岸桥的作业效率直接决定整个码头的作业效率。上海港洋山深水港区四期自动化集装箱码头(以下简称"洋山四期码头")配备10台双小车岸桥。在双小车岸桥作业过程中,门架小车自动运     

集装箱岸桥吊具自动对箱系统

为实现集装箱码头的自动化作业,采用目标识别传感器系统检测集装箱与吊具之间的偏差,实现岸桥自动对箱。通过机器视觉产品,将摄取目标转换成图像信息和数据信息,在传给专用处理模块进行处理后获取目标的特征,并根据目标特征进行运动控制。测试结果表明:该系统能够快速、准确地实现吊具自动对箱操作。     

港口41T-32M轻型岸桥单双箱吊具兼容性改造

宁波舟山港股份有限公司北仑矿石码头分公司(以下简称"北仑矿石码头")的惠生41T-32M轻型岸桥配备振华单箱吊具,采用点对点控制集装箱吊具的形式,一次可起吊1个20英尺集装箱或40英尺集装箱.随着北仑矿石码头集装箱业务的发展,码头对集装箱装卸效率提出更高要求.双箱作业岸桥的作业效率比单箱作业岸桥提升20％以上;因此,有必要对北仑矿石码头的单箱作业轻型岸桥实施双箱作业技术改造,以提升设备作业效率.振华液压双箱吊具性能优良,若能用于轻型岸桥,完全可以满足作业需要.北仑矿石码头41T-32M轻型岸桥单双箱吊具兼容性改造项目应用控制器局域网络(controller area network,CAN)总线控制岸桥吊具,使用9芯插头替代48芯插头实现双箱吊具功能,同时保留48芯插头点对点控制功能,实现北仑港区岸桥与龙门吊吊具通用.     

远控岸边集装箱起重机定位技术

介绍了岸边集装箱起重机的小车定位、大车定位以及负载定位检测技术,给出了在远控岸桥上应用的SICK小车磁尺系统、大车定位RFM100系统和负载定位IRM系统的原理、组成及应用条件,可为码头新增自动化岸桥或者常规岸桥的自动化改造提供参考。     

基于Petri网的新型集装箱自动化装卸工艺死锁分析及消除

<正>1新型集装箱自动化装卸工艺针对现有集装箱自动化装卸系统效率不高、作业方式不符合国内习惯等问题,本文提出采用高低架行车系统和循环平板小车系统的新型集装箱自动化装卸工艺(见图1)。集装箱码头前沿采用双小车岸桥;堆场采用高架行车系统;前沿与堆场之间的集装箱水平运输通过回字形循环平板小车系统来完成;进出港闸口采用低架行车和堆场后方多路回字形循环小车系统,以实现外集卡进口箱和堆场出口箱集疏港。     

自动化双小车岸桥CCTV系统设计

为保证自动化双小车岸桥安全、可靠、高效运行,研发了自动化双小车岸桥CCTV监控系统,可通过实时图像传输监视设备运行情况,实现司机远程操作和设备维保人员对关键部位运行状况的实时监控。     

双小车岸边集装箱起重机主吊具防摇防扭控制特性研究

针对双小车岸边集装箱起重机主吊具防摇及防扭控制问题,建立了小车吊重负载动力学模型,采用基于线性二次型的最优控制方法,实现主小车和主吊具精确位置控制,主吊具防扭控制采用串级控制方式,控制策略为带死区补偿的变增益PID,实现自动防扭控制,整个过程调节平稳,可提高自动化作业效率。     

一种基于激光测距的船形轮廓扫描系统

为提高自动化码头中岸边集装箱起重机对船作业的效率和安全性,提出一种适用于自动化岸桥的船形扫描系统.该系统将激光器安装在岸桥小车架下方,利用激光器测距原理,实时扫描获取船上障碍物的轮廓,并随着小车的运动,生成障碍物点云地图信息;利用障碍物信息和吊具位置关系,对小车和起升限速以达到防撞保护的目的;系统可以提供船形轮廓,用于...     

基于多体动力学建模分析的岸桥吊具主动防摇控制

<正>岸桥是新一代全自动化集装箱码头的重要设备,其中吊具防摇控制技术是岸桥智能化关键技术之一。~([1])吊具摇摆极易造成吊具及其起吊的集装箱与周围建筑物、设备和集装箱等发生碰撞,尤其是在全自动化集装箱码头普遍采用远程操控技术的     

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.     

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.     

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.     

Catalyzing Coastal Management in Kenya and Zanzibar: Building Capacity and Commitment

Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues.     

舰艇反鱼雷技术

对目前舰艇反鱼雷技术中的非杀伤、软杀伤和硬杀伤等比较先进的手段进行了阐述,并在此基础上分析研究了舰艇反鱼雷技术的发展趋势。     

A simplified method for reliability- and integrity-based design of engineering systems and its application to offshore mooring systems

This paper presents a simplified method for the reliability- and the integrity-based optimal design of engineering systems and its application to offshore mooring systems. The design of structural systems is transitioning from the conventional methods, which are based on factors of safety, to more advanced methods, which require calculation of the failure probability of the designed system for each project. Using factors of safety to account for the uncertainties in the capacity (strength) or demands can lead to systems with different reliabilities. This is because the number and arrangement of components in each system and the correlation of their responses could be different, which could affect the system reliability. The generic factors of safety that are specified at the component level do not account for such differences. Still, using factors of safety, as a measure of system safety, is preferred by many engineers because of the simplicity in their application. The aim of this paper is to provide a simplified method for design of engineering systems that directly involves the system annual failure probability as a measure of system safety, concerning system strength limit state. In this method, using results of conventional deterministic analysis, the optimality factors for an integrity-based optimal design are used instead of generic safety factors to assure the system safety. The optimality factors, which estimate the necessary change in average component capacities, are computed especially for each component and a target system annual probability of system failure using regression models that estimate the effect of short and long term extreme events on structural response. Because in practice, it is convenient to use the return period as a measure to quantify the likelihood of extreme events, the regression model in this paper is a relationship between the component demands and the annual probability density function corresponding to every return period. This method accounts for the uncertainties in the environmental loads and structural capacities, and identifies the target mean capacity of each component for maximizing its integrity and meeting the reliability requirement. In addition, because various failure modes in a structural system can lead to different consequences (including damage costs), a method is introduced to compute optimality factors for designated failure modes. By calculating the probability of system failure, this method can be used for risk-based decision-making that considers the failure costs and consequences. The proposed method can also be used on existing structures to identify the riskiest components as part of inspection and improvement planning. The proposed method is discussed and illustrated considering offshore mooring systems. However, the method is general and applicable also to other engineering systems. In the case study of this paper, the method is first used to quantify the reliability of a mooring system, then this design is revised to meet the DNV recommended annual probability of failure and for maximizing system integrity as well as for a designated failure mode in which the anchor chains are the first components to fail in the system.     

Community-Based Management for Sustainable Fisheries Resources in Phang-nga Bay,Thailand

Fishing communities, the Government of Thailand Department of Fisheries, local nongovermnental organizations, universities, the Food and Agriculture Organization of the United Nations (FAO), and FAO's Bay of Bengal Program have undertaken a partnership in management of Phang-nga Bay's coastal resources. It is the first project of its kind in Thailand, and although still in the early stages, offers insights that may contribute to our knowledge of how we can improve our management of coastal resources, including the importance of (1) building relationships within the governance process; (2) combining education, enforcement, and economic incentives to achieve compliance; (3) implementing solutions early; and (4) government support of community-based decisions. These insights reinforce trends emerging in other coastal management projects in the Asian region.     

含裂纹钢板复合材料修补强度和刚度数值分析

用ANSYS有限元分析软件对复合材料补片修复含边裂纹和中心裂纹钢板的强度和刚度进行了数值分析.引入相对刚度的概念,研究了钻有止裂孔裂纹的长度对损伤钢板相对刚度的影响,分析了损伤钢板刚度复合材料贴片修补效果;引入屈服载荷提高率的概念,分析了损伤钢板强度的修复效果.     

混凝土道路、堆场面层裂缝的产生与防治

从混凝土道路、堆场的各个结构层分析裂缝产生的原因,并针对性地说明预防措施,阐述裂缝维修方法。     

单相PWM整流器的建模与仿真分析

文章详细分析了单相VSR型PWM整流器的整流原理,建立了电流内环,电压外环的单相VSR型PWM整流控制器的数学模型和逻辑框图。在MATLAB／Simulink软件环境中进行了仿真,分析了模型的可行性。