港口移动高架起重机结构及焊接工艺分析

发布时间：2018-07-03 20:26

本文选题：港口移动高架起重机 + 结构　；参考：《华南理工大学》2015年硕士论文

【摘要】：港口移动高架起重机是一种广泛应用于港口码头集装箱、杂件货及散货等货物吊运装卸的可移动的多用途起重设备,在国外已有60多年的发展历史,具有起重能力强、效率高、性能可靠等特点,并具有良好的机动性、适应性和经济性,在国外港口码头得到广泛的使用,目前其主要市场和技术都被国外生产企业垄断,在我国还没有设计和制造的企业,设备开发制造具有一定的技术难点,结构件的设计和焊接工艺是其关键的技术之一。本论文结合企业开发的SGQ105G型港口移动高架起重机项目,从整机的结构设计到生产制造,结合分析软件及试验方法分析结构设计及焊接工艺的特点和要求。研究分析了高强度材料在结构上的应用及焊接工艺性能,最后完成样机的制造,对整机性能进行测试,验证结构设计和焊接工艺的可行性和可靠性。本文研究内容和结论如下:(1)通过研究分析高架起重机的工作特点,臂架采用了钢管桁架式变截面四弦杆结构,并建立了有限元分析模型,分析了臂架在不同工况下的强度和刚度情况,通过分析结果可知所采用的臂架结构形式整体受力较为均匀,主要应力集中在变幅油缸铰点附近及筋板位置,整体结构符合高架起重机工作要求。(2)利用模拟软件对塔身结构进行了铰点优化分析,选取了合适的铰点位置,使塔身在结构受力及整机作业性能要求下达到一个较为理想的状态。(3)为降低整机重量,提高整机作业性能,臂架结构采用了高强度材料HSM770代替普通的钢材,以获得更好的强度和刚度。(4)通过试验对高强度材料HSM770的焊接性能进行了分析,分析结果表明采用一定的措施和焊接工艺方法能有效确保其焊接性能和力学性能。(5)完成了整机的生产制造,通过性能测试及质量检测,进一步验证了结构设计的可靠性,以及高强钢HSM770具有良好的焊接性能,适用于高架起重机产品的开发。
[Abstract]:Port mobile overhead crane is a kind of removable multi use lifting equipment which is widely used in port and wharf container, hybrid cargo and bulk cargo. It has a history of more than 60 years of development abroad. It has the characteristics of strong lifting capacity, high efficiency, reliable performance and so on. It has good mobility, adaptability and economy in China. The external port wharf is widely used. At present, its main market and technology are monopolized by foreign production enterprises. In our country, there are no enterprises designed and manufactured in China. Equipment development and manufacturing have some technical difficulties. The design and welding process of the structure parts are one of the key technologies. This paper combines with the SGQ105G port movement developed by the enterprise. The movable overhead crane project, from the structure design to the manufacturing, analyses the characteristics and requirements of the structure design and welding process with the analysis software and the test method. The application of the high strength material in the structure and the welding process performance are analyzed and analyzed. Finally, the prototype is made, the performance of the machine is tested and the structure design is verified. And the feasibility and reliability of the welding process. The contents and conclusions of this paper are as follows: (1) through the study and analysis of the working characteristics of elevated crane, the arm truss adopts a steel tube truss type four chord structure with variable cross section, and a finite element analysis model is established. The strength and stiffness of the arm frame under different working conditions are analyzed, and the results are known by the analysis results. The overall stress of the arm frame is more uniform, the main stress is concentrated near the hinge point of the variable amplitude oil cylinder and the position of the stiffener. The overall structure is in line with the working requirements of the elevated crane. (2) the optimization analysis of the hinge point of the tower body is carried out by the simulation software, and the appropriate position of the hinge is selected to make the tower body in the force of the structure and the operation of the whole machine. It can be required to reach a more ideal state. (3) in order to reduce the weight of the whole machine and improve the performance of the whole machine, the boom structure uses high strength material HSM770 instead of ordinary steel to get better strength and stiffness. (4) the welding performance of high strength material is analyzed by test. The analysis results show that a certain amount of material is used. The measures and welding techniques can effectively ensure its welding performance and mechanical properties. (5) the whole machine is manufactured and the reliability of the structural design is verified through performance testing and quality testing. The high strength steel HSM770 has good welding performance and is suitable for the development of elevated crane products.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U653.921

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