【作者】 朱惠华；

【导师】 石端伟；

【作者基本信息】 武汉大学 ， 机械制造及其自动化， 2005， 硕士

【摘要】 塔带机是将塔式起重机与皮带输送机相结合而形成的“塔吊皮带机”。作为一种新型的施工机械,国内外应用的实例都较少。在塔带机等混凝土运输设备的实际使用过程中,曾经发生由于设计和制造缺陷等原因引起的工程事故。因此,对塔带机的结构进行研究和分析,可以为发具有自主知识产权的布料机提供基础。 本文以有限元理论为基础,运用ANSYS软件对TC2400型塔带机进行了有限元分析,完成了起重臂末端静挠度的校核分析,以及两种运行方式、四种不同工况下的整机有限元分析。然后在整机分析基础上,运用子模型方法,对工作平台、A型架——工作平台销轴联接、塔节之间高强螺栓联接以及回转平台——塔身销轴联接等关键部位进行了应力分析,得到了这些部位的应力分布情况。在课题研究中,还探讨了复杂结构的合理简化、多种单元混合建模以及接触分析等问题。 本文的创新点是: 1、在课题研究中,对复杂结构的合理简化、多种单元混合建模以及接触问题进行了一定的探讨,研究成果对结构复杂、规模庞大、涉及多种单元的有限元分析具有一定的启示作用。 2、子模型方法在TC2400塔带机结构有限元分析中的成功应用,为复杂结构的有限元分析提供了一种十分有效的思路和方法。与传统计算方法相比,其计算精度能够满足工程要求,同时又能降低工作量、节省大量机时。更多还原

【Abstract】 Tower-belt is a kind of machine which combines feeding belt machine and tower crane. As a new kind of construction machine, it is seldom applied in construction project. And during actual using process of tower-belt and other concrete transportation equipments, some project accidents happened because of design problem or manufacture problem. As a result, the study and analysis of the structure of tower belt crane can redound to the design of tower-belt, which has own knowledge property right.This paper set up a finite element model of TC2400 tower-belt making use of the famous finite element analysis software-ANSYS, calculated the deformation of the lifting arm, and analyzed the deformation and stress of the full mechanical model in four work situation of two different function mode. Then the paper checked the stress distributing of some important parts, such as the work flat, the join between the turning flat and tower body, and the join between tower burls.This paper also discussed the practical simplification of complicated structure, the complex modeling method of different kinds of element, and contact analysis problems.The paper has several innovate points as below:1. Studied some problems, such as practical simplification of complicated structure, complex modeling method of different kinds of element, and contact analysis problem. Getting some experience about, and provide some revelation for full model analysis of complex and huge structure.2. Successfully applied sub-modeling method in finite element analysis of TC2400 tower-belt, and bring out a practical method for analysis of complex structure. This method can satisfy the engineering request, and save computing time.更多还原