【作者】 董毓海；

【导师】 刘刚； 史文利；

【作者基本信息】 武汉理工大学 ， 机械工程， 2002， 硕士

【摘要】 现代港口的装卸型门机不断地追求更高的经济指标，在港口装卸生产中起着越来越重要的作用。长期以来，装卸型门机的金属结构的管理一直是港口设备管理的难点，如何有效地提高这些装卸型门机使用的科学性和合理性，有效延长其使用寿命是当前港口机械结构状态检测和故障诊断的重要内容。 本文以天津港第六港埠公司16t／33m门机转台筒体开裂的原因分析和修复裂纹方案优化为主线，研究了装卸型门机结构CAEA的概念和方法，包括模型的生成和处理的方法、单元和网格的控制方法等。运用ANSYS软件对装卸型门机的转台筒体结构进行了分析，得到了结构的应力、变形、应变能等的分布情况和应力、位移等分布图谱，为结构状态监测与诊断、测试提供了理论和技术指导。根据分析结果，给出了修复门机转台筒体裂纹的优化方案和具体的施工工艺，将结构CAEA方法应用于港口机械设备管理，指导港口设备金属结构的管理和检测。 本文的主要创新点是： 系统地研究了装卸型门机结构CAEA建模的技术问题，采用理论建模与实验建模相结合的建模方法与技术，提高了模型及其计算结果的可靠性与科学性。通过对装卸型门机转台筒体结构的实体建模与分析，发现了其在载荷作用下的应力分布情况，为转台筒体裂纹的产生原因提供了有力的证据。并提出和验证了修复方案的正确性，有效地解决了天津港16t／33m门机转台筒体开裂的实际问题，为治理该类门机的钢结构开裂开创了先例，对今后同类机型钢结构开裂的修复及新造同类结构门机提供了设计、工艺要求，均有良好的借鉴价值。为港口设备的安全生产提供了科学保障，大大提高了港口设备管理的科学性和合理性，使整个港口设备管理水平上一个新台阶。更多还原

【Abstract】 Modem harbour crane has been continuously seeking higher economical efficiency. The stevedoring gantry crane in modern harbours plays a critical role in loading and discharge production. In a long term, management of metal structure is a difficult point in themanagement of harbour equipment. How to increase the scientific reasonability of these cranes, and to prolong their lives, is one important harbour of state supervision and fault diagnosis in harbour machinery.Taking the cause analysis and its repair scheme optimization of the rotating platfome sleeve crack with the 16t/33m gantry of the Sixth Harbour Company of Tianjin Harbour as the main research line, the dissertation makes such researches as on the conception and method of CAEA of stevedoring gantry crane structure, which includes the generating and treating method, the controlling method on the units and meshes. Analysis is carried out in the use of ANS YS software on the sleeve structure of the rotating platform thereof and stress, deformation and strain energy in the respect of distribution and the distribution atlas of stress, shift are acquired for the purpose of structure state monitoring and diagnosis as well as testing both in theory and technology instructions.The main points of innovation are as follows:Systematic research is made on the CAEA structure modeling of the stevedoring gantry crane. The combination of theoratic modeling and experimental modeling in its method and technology improves the reliability and scientific reasonability to model and calculate the results. The actual modeling and analysis therefor leads to the discovery of stress distribution under loading, which provides strong evidence for the cause of crack of the rotating platform. Correct repair scheme is proposed and testified, effectively solving the questioa with the 16t/33m gantry crane rotating platform and enhancing the scientific reasonability for a new step in the management level of harbour facilities.更多还原