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