大型动态雕塑机械驱动系统研究

发布时间：2018-03-14 04:11

本文选题：大型动态雕塑　切入点：有限元分析　出处：《山东理工大学》2009年硕士论文　论文类型：学位论文

【摘要】： 本文针对大型动态雕塑的特征,对其机械驱动系统进行了深入研究,并开发了具有升降、旋转和开合功能的大型动态雕塑机械驱动装置。研究了升降系统的设计目标及设计要求,对现有升降机构进行了类型分析与优选,确定了齿轮齿条升降方案并进行了分析,最终创新设计出背靠背式齿轮齿条升降系统。分析了回转系统的工作特点,对回转装置中的回转小齿轮采取对称布置的结构形式,从而使回转装置运行更加平稳。分析了开合机构的设计目标和要求,对开合机构进行了类型综合并对方案进行了优选,最终确定了液压直拉式开合机构。在此基础上确定了开合机构优化设计的设计变量、约束条件、目标函数,建立了优化设计的数学模型。利用MATLAB优化工具箱对优化模型进行求解。优化设计后,液压缸运行更加平稳。对动态雕塑机械驱动系统的关键零部件进行了结构设计,并利用UG软件建立了动态雕塑的三维实体模型。建立齿轮齿条有限元模型并研究了其强度问题。结果表明所选结构及尺寸参数满足升降装置的强度要求。建立以升降装置的用钢量最小为目标函数的优化计算模型,利用ANSYS软件得到其优化结果,从中选取了一组最优化设计序列,再次建立数学模型,分析验证了所确定的升降装置能够满足应用要求,使升降装置的用钢量减少20.28%。利用UG4.0对动态雕塑进行虚拟装配,装配过程中对主要零部件进行了静干涉检验,并确定了各零部件问的相对位置关系,进一步优化了模型结构。按照给定的运动要求进行了虚拟仿真,分析了相关部件的位移、速度和加速度并进行了运动干涉研究。结果表明,该方案在运动方面是可行的。本文的研究为大型动态雕塑驱动设备的研制提供了一种切实可行的设计方法,解决了由于物理样机制造困难而无法验证设计方案是否可行的问题,并对今后进行大型非标重载设备的研究和开发提供了重要的参考价值。
[Abstract]:According to the characteristics of large-scale dynamic sculpture, the mechanical driving system of large-scale dynamic sculpture is studied in this paper, and the mechanical driving device of large-scale dynamic sculpture with the functions of lifting, rotating and opening and closing is developed. The design objectives and design requirements of the lifting system are studied. The type analysis and optimal selection of the existing lifting mechanism are carried out, and the lifting scheme of the gear rack is determined and analyzed. Finally, the back-to-back gear rack lifting system is designed, and the working characteristics of the rotary system are analyzed. The rotary pinion gear in the rotary device is symmetrically arranged so that the rotary device can run more smoothly. The design objectives and requirements of the opening and closing mechanism are analyzed. The type synthesis of the opening and closing mechanism and the optimal selection of the scheme are carried out. Finally, the hydraulic open and close mechanism is determined. On this basis, the design variables for the optimal design of the opening and closing mechanism are determined. The mathematical model of optimization design is established under the constraint condition and objective function. The optimization model is solved by MATLAB optimization toolbox. After the optimization design, the hydraulic cylinder runs more smoothly. The structure design of the key parts of the dynamic sculpture mechanical drive system is carried out. The 3D solid model of dynamic sculpture is established by UG software. The finite element model of gear rack is established and its strength problem is studied. The results show that the selected structure and dimension parameters can meet the strength requirements of lifting device. An optimization calculation model with the minimum steel quantity as the objective function is established. The optimization results are obtained by using ANSYS software, and a group of optimization design sequences are selected from it, and the mathematical model is established again. It is proved that the determined lifting device can meet the requirements of application and reduce the steel consumption of the lifting device by 20.28%. The virtual assembly of dynamic sculpture is carried out by using UG4.0. The static interference inspection of the main parts is carried out during the assembly process, and the relative position relation of each component is determined. Furthermore, the model structure is optimized. The virtual simulation is carried out according to the given motion requirements. The displacement, velocity and acceleration of the components are analyzed and the motion interference is studied. The results show that the scheme is feasible in motion. The research in this paper provides a practical design method for the development of large-scale dynamic sculpture driver, and solves the problem that the design scheme can not be verified because of the difficulty in the manufacture of the physical prototype. It also provides an important reference value for the research and development of large non-standard heavy duty equipment in the future.
【学位授予单位】：山东理工大学
【学位级别】：硕士
【学位授予年份】：2009
【分类号】：TH211.6

【引证文献】