硕士学位毕业论文 硕士研究生： 徐沛鑫 指导教师：沈斌 教授 答辩时间：2013.06 摘要 液压支架是综合机械化采煤中的重要设备，在确保其安全性和功能的基础上，进行轻量化设计，减少重量，对于降低产品成本、提高经济效益，具有重要的意义。 本文首先对液压支架进行了参数化建模,利用Pro/E进行了二次开发，为后期的结构优化效率的提高了奠定了基础。然后以顶梁为例对轻量化的方法进行了研究，为该课题整架的优化研究提供了理论和方法，具体内容如下： 1. 为了能够快速提供优化过程中所需要的模型，对液压支架采用了参数化的骨架建模，实现了模型的快速修改和重生。 2. 利用Pro/E二次开发程序，开发了液压支架的参数化设计平台及尺寸驱动平台。该平台实现了液压支架的参数化受力分析，为液压支架的设计提供了力学依据。同时也可以通过对骨架参数刷新，实现液压支架模型的驱动再生。并且在该平台中添加了参数关联功能，实现了对模型中任意参数的尺寸驱动。 3. 建立了液压支架顶梁的有限元模型，并进行了有限元计算，得到了不同工况下液压支架顶梁的应力和应变，为顶梁轻量化分析的奠定了基础。 4. 为了对顶梁进行轻量化研究，选取了三个顶梁关键部件尺寸作为设计变量，以降低顶梁在不同工况下最大应力为研究目标，通过试验设计选取了试验样本点，并通过有限元计算得到了样本点的响应值。同时引入了牛顿插值法进行最大应力计算，为提高整架结构优化的效率进行了探索研究。 5. 基于响应面法，建立了顶梁最大应力的近似模型，并对响应面模型进行了验证。响应面模型的建立解决了液压支架顶梁结构优化过程中高精度有限元计算费时费力且优化效率低的问题，使优化效率得到了提高。液压支架顶梁的优化研究为其他部件以及整架结构的优化提供了思路和方法。 关键词 ：液压支架，二次开发，顶梁，代理模型，结构优化 ABSTRACT Hydraulic support is an important mechanized coal mining equipment . E nsuring its security and functionality ， to make lightweight design, reduc e weight , is of great significance for reducing product costs and improve economic efficiency . This article first made the parametric modeling of hydraulic support and se condary development by Pro/E, to base the foundation of efficiency improvement von structural optimization. Then made an example by roof beam to study methods of lightweight. Thus providing methods and theory for the entire shelf optimization, specific content is as follows: 1. To be able to provide the required model for optimization and to achieve the function of rapid changes and remodeling, the hydraulic support was made by parametric skeleton modeling. 2. Hydraulic support parametric design and dimension-driven platform was established by using Pro/E secondary development program me. The platform can provide parametric stress analysis for hydraulic support design. And it can achieve hydraulic support model driven generation by refreshing skeleton parameters. A parameter correlation function was added to the platform and realized dimension-driven of any parameter. 3. A hydraulic support roof beam finite element model was established and was made finite calculation. Then stress and strain of hydraulic support roof beam in different conditions was achieved. It is the foundation of roof beam lightweight analysis. 4. In order to study roof beam lightweight, three key components dimensions was selected design variables a nd the reduction of maximum stress of roof beam in different conditions was selected as research objectives. Sample points was selected through experiment design, and response of sample points was calculated by element finite analysis. T he introduction of the maximum stress calculation von Newton interpolation method explored in order to improve the efficiency of the whole frame structure optimization 5. Based on the response surface method, a maximum stress of the top beam approximation model was established, and the response surface model was proven. Response surface model solved the time-consuming problem and low efficiency von high accuracy finite element calculation during the structural optimization of hydraulic support beam. Thus improving the efficiency of optimization. The optimization research of hydraulic support roof beam provided ideas and methods for optimization of entire frame structure and other components. Key words: hydraulic support, secondary development, roof beam, a gent model , structure optimization
硕士学位毕业论文 硕士研究生： 姚秀卿 指导教师：沈斌 教授 答辩时间：2012.06 摘要 我国煤层储量丰富，在中厚煤层开采中需要使用到高性能的综采设备。液压支架是煤矿综采设备的重要组成部分，其主要作用是与采煤机配合，实现采煤的综合机械化，提高采煤效率。对液压支架的参数化建模设计方法进行研究，对于企业实现快速设计、提高市场竞争力具有重要的现实意义。 本文分析 了国内外 CAD 技术的研究状况，以及参数化设计方法的理论及其在实际设计过程中的应用。通过对液压支架结构以及工作原理的研究，对液压支架进行功能模块划分，建立模块化系统。在参数化设计中，以顶梁为研究对象，采用自顶向下的设计方法，完成从装配体到各个零部件的三维建模，将设计信息以数据共享的方式，依次从装配体传递到组件、组件下的零件，同时通过自定义驱动参数以及关系式的设置实现模型中零部件的装配约束和几何约束，从而建立了顶梁的参数化信息模型。使用该参数化信息模型可以从全局设计的角度控制整个三维模型的生成，便于设计后续阶段对产品模型的修改以及优化。 在完成顶梁参数化信息模型的基础上，本文对 CAD 二次开发技术进行了研究，通过设计系统的开发使本课题的参数化设计效率进一步提升。根据通用软件的开发方法，确定了本课题的设计系统的开发环境、网络架构以及所使用的相关技术，得出了系统的总体方案。在对 Pro/E 软件自带的开发工具 Pro/TOOLKIT 充分研究的基础上，使用 Visual C++ 语言，结合 Pro/TOOLKIT 包含的库函数，完成设计系统参数化驱动建模的程序功能；使用 MFC 控件 与 Pro/TOOLKIT 底层函数相结合 搭建界面友好的系统菜单以及各模块的界面；针对传统设计过程中设计数据管理效率不高的问题，本文利用了数据库对设计数据进行管理，使用 ADO 技术设计出高效的数据库接口，使设计系统与数据库有效连接。 本文开发的设计系统具有参数化建模、设计信息管理等功能。使用该设计系统，用户可以利用良好的人机界面通过参数输入或者调用数据库已有设计数据完成液压支架顶梁的零部件设计，有效地提高了设计效率以及设计质量。 关键词 ：液压支架,顶梁，参数化设计，二次开发 ABSTRACT The coal reserve is rich in China, the height quality coal mining equipment is used in the thick seam. The hydraulic support is an important part of coal mining equipment, it works together with the shear to get the comprehensive mechanization of coal mining, in order to improve the mining efficiency. The research of the design method of the hydraulic support has important practical significance for the rapid design and also can enhance the market competitiveness of a company. This article describes the status of CAD technology both at home and abroad, as well as the theory of parametric design method. On basis of the study of the principle of hydraulic support, determining the way of the parametric design for hydraulic support, then dividing the function module of hydraulic support. Take the upper beam of hydraulic support as example, using the top-down design method, passing the design information from the assembly to the parts or components with data sharing method, then set up the custom design parameters and the relationship, in order to establish the parametric information model, then get the control of the modeling of the entire 3D model, so that it’s convenient to modify or optimize the model later. In addition, research on the secondary development technology of CAD on base of conventional parametric design method, so as to improve the parametric design competence of CAD through the secondary development. Developing the user application program with Pro/TOOLKIT and VC++, integrating the application to CAD system, with an good interface user can easily input the parameters to regenerate the template model to get the required model. In this way people can avoid the repetitive work in the develop term, so that reduce the design cost time and improve the design quality. The efficiency of data management in the traditional design is not good enough, in order to solve this problem, we use the database technology to manage the design information, and connect the database system together with the secondary developed design system, so that the design system consist of parametric modeling and data management functions. The research in this text contributes to the product development in the modern design and manufacture side for the company, and the design way can be also used in other product design system. Key Words: hydraulic support ， the upper beam ， parametric design ， secondary development
标签: 二次开发
