港口门式起重机RCM分析及其应用研究

发布时间：2018-07-22 17:24

【摘要】：随着我国港口货物吞吐量的与日俱增,起重机械在港口货物运输中发挥的作用越来越大。发展往往与问题并存,伴随着起重设备的增多,港口在设备运维管理上面临的问题也逐渐增多。与此同时,港口起重机长期以来采用的计划维修管理模式逐渐暴露出维修不足、维修资源浪费等问题。设备维修观念和维修模式的相对滞后,增加了港口起重设备的维修成本,在一定程度上制约了港口效益的快速增长与提高。而将RCM技术应用于港口门式起重机健康管理,可以有效识别设备故障,优化维修决策,确保设备和结构的安全运行,提升设备的利用率,降低维修成本,增加企业的经济效益。本文主要研究内容如下:(1)从系统设备及结构两个方面具体阐述了RCM分析方法在港口起重机上的应用。并基于港口起重机的维修现状,对RCM分析逻辑决断过程进行了适当的改进,使RCM技术更贴近港口起重机实际应用。(2)以某港口300t门式起重机为研究对象,采用RCM分析对其设备设备进行了分析。通过重要结构项目分析,确定了对该门式起重机故障危害较大的设备,然后有针对性的对MSI进行FMECA分析,在确定重要功能产品的基础上,进一步确定了个MSI故障后果的危害度大小并予以评级排序,采用逻辑决断方法优先确定关键故障的维修决策,并基于可用度最大原则及维修总费用最小原则确定了相应的预防性维修周期。(3)论述了基于状态监测方法的港口门式起重机维修决策优化方法。以某港口300t门式起重机金属结构为研究对象,结合仿真模拟方法,确定结构应力测试点,采用无线应变节点技术对其进行了结构应力监测,然后通过对监测数据的处理,计算出结构各测点区域的疲劳寿命。最后,对300t门式起重机结构进行了RCM分析,并以结构状态监测数据为基础,确定了其疲劳损伤检查间隔期。与传统维修间隔期确定方法相比,基于结构状态监测的数据更为贴近结构实际情况,故得出结果更为准确可靠。(4)构建了基于RCM分析的港口门式起重机健康管理系统架构,并对系统各个模块的内容进行了阐述,内容对于RCM应用于港口门式起重机健康管理有一定的参考作用。
[Abstract]:With the increasing throughput of port cargo in China, crane plays a more and more important role in port cargo transportation. Development often coexists with problems. With the increase of hoisting equipment, port is faced with more problems in equipment operation and maintenance management. At the same time, the planned maintenance management mode adopted by port crane for a long time has gradually exposed the problems of insufficient maintenance and waste of maintenance resources. The relative lag of equipment maintenance concept and maintenance mode increases the maintenance cost of port hoisting equipment and restricts the rapid growth and improvement of port efficiency to a certain extent. The application of RCM technology to the health management of port gantry cranes can effectively identify equipment failures, optimize maintenance decisions, ensure the safe operation of equipment and structures, improve the utilization rate of equipment, reduce maintenance costs and increase the economic benefits of enterprises. The main contents of this paper are as follows: (1) the application of RCM analysis method in port crane is expounded from two aspects of system equipment and structure. Based on the maintenance status of the port crane, the RCM analysis logic decision process is improved appropriately, which makes the RCM technology more close to the practical application of the port crane. (2) take 300t portal crane in a port as the research object. The equipment is analyzed by RCM analysis. Through the analysis of important structural items, the equipment which is harmful to the gantry crane fault is determined, and then the FMECA analysis of MSI is carried out, on the basis of determining the important function products, Furthermore, the harm degree of the MSI fault consequence is determined and ranked, and the maintenance decision of the key fault is given priority by using the logic decision method. Based on the principle of maximum availability and minimum total maintenance cost, the corresponding preventive maintenance cycle is determined. (3) the maintenance decision optimization method of port gantry crane based on condition monitoring method is discussed. Taking the metal structure of a 300t gantry crane in a port as the research object and combining the simulation method, the stress test point of the structure is determined. The structural stress is monitored by wireless strain node technology, and then the monitoring data are processed. The fatigue life of each measuring point of the structure is calculated. Finally, the RCM analysis of 300t gantry crane structure is carried out, and based on the monitoring data of structure state, the fatigue damage inspection interval is determined. Compared with the traditional maintenance interval determination method, the data based on structural condition monitoring is more close to the actual situation of the structure, so the results are more accurate and reliable. (4) the structure of port gantry crane health management system based on RCM analysis is constructed. The contents of each module of the system are described, which has certain reference function for the application of RCM to the health management of port gantry crane.
【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U653.921

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