缆索起重机静动态特性研究

发布时间：2019-04-25 14:47

【摘要】：缆索起重机是一种能够兼作水平与垂直运输的起重设备。它经常被用于地势起伏不平、或者陆地上使用其他运输机械在技术上和经济上都不适合的地方。可作较长距离的空中运输,不受地势和施工操作场地的限制。因此,广泛应用于公路、铁路桥梁施工建筑工程及水利建设中,用来运输建筑材料和吊装钢筋混凝土预制构件。本文以斜卡电站60kN缆索起重机为研究背景,以缆索起重机的主要组成部分主索、塔架、小车等为研究对象,运用有限单元法、结构力学、动力学等基本理论,利用三维机械设计软件SOLIDWORKS建立塔架几何模型,利用MATLAB软件、ANSYS软件对主索、塔架进行计算分析,利用SIMULINK工具箱对吊重—小车系统进行研究,最终完成了对整机各部分特性的研究。对于缆索起重机的主索,论文研究了其在不同工况的包络线、是否考虑垂度、集中载荷影响的振动特性,得到其振动频率及振型；对于塔架,通过计算确定了应力分布规律及高应力区,研究了其固有频率及相应的振型,以及当载荷变化时塔架关键部位位移和应力的动态响应。论文最后以吊重、小车为系统,推导其力学模型并仿真,得出响应结果。本文通过对斜卡电站60kN缆索起重机的分析计算,研究了固定式缆索起重机各主要组成部分的静动态特性,对于此类缆索起重机的设计及应用有一定的参考意义。
[Abstract]:Cable crane is a kind of lifting equipment which can be used for both horizontal and vertical transportation. It is often used in places where the terrain is undulating, or where other transport machinery is not technically and economically appropriate on land. Can be long-distance air transportation, not restricted by the ground and construction operation site. Therefore, it is widely used in highway, railway bridge construction and water conservancy construction, used to transport building materials and hoisting reinforced concrete prefabricated components. Based on the research background of 60kN cable crane of oblique card power station, the main components of cable crane, such as main cable, tower frame, trolley and so on, the basic theories of finite element method, structural mechanics, dynamics and so on, are studied in this paper. The three-dimensional mechanical design software SOLIDWORKS is used to establish the geometric model of tower, the main cable and tower are calculated and analyzed by MATLAB software and ANSYS software, and the lifting weight-trolley system is studied by using SIMULINK toolbox. Finally, the characteristics of each part of the whole machine are studied. For the main cable of the cable crane, the paper studies the envelope of the cable crane in different working conditions, whether to consider the sag, the influence of concentrated load on the vibration characteristics, to obtain its vibration frequency and vibration mode; For the tower, the stress distribution law and the high stress zone are determined by calculation. The natural frequency and the corresponding mode shape of the tower are studied, and the dynamic response of the displacement and stress of the key parts of the tower when the load changes are also studied. At the end of the paper, the mechanical model is deduced and the response result is obtained by using the lifting weight and the trolley as the system. In this paper, the static and dynamic characteristics of the main components of the fixed cable crane are studied through the analysis and calculation of the 60kN cable crane of the inclined card power station, which has certain reference significance for the design and application of this kind of cable crane.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH218

【参考文献】