某门式刮板取料机金属结构分析及优化

发布时间：2018-03-14 13:36

本文选题：门式刮板取料机　切入点：CAD/CAE　出处：《吉林大学》2011年硕士论文　论文类型：学位论文

【摘要】：某热电厂Ⅱ期扩建1x330MW项目门式刮板取料机,此设备通常工作在系统干煤棚煤场中,取料机横跨煤堆进行取料作业。该设备初步设计方案已经完成,其基本结构包括柔性侧、刚性侧行走机构、刮板取料机构、取料金属结构、司机室、电气室、导料装置、润滑装置、检测装置、限位装置、动力控制电缆卷筒、洒水装置、平台栏杆、电控系统等。接下来的工作需要借助CAE商业软件,来计算该设备金属结构的设计是否合理,还存在什么问题,不合理之处提出改进方案并进行优化。由于本项目设计工作采用Auto CAD软件,与有限元分析工具不存在数据接口,所以我们只能够根据厂方提供的图纸人为手工建立计算模型。本项目主要对该设备金属结构的以下几个方面进行计算校核：强度计算及校核、刚度计算及校核、稳定性计算及校核以及特殊部件的校核,并提出可行性优化建议,优化模型并计算。本论文采用有限元方法对设备金属结构进行静力分析。本次分析选用Pro/ENGINEER软件建模并在该软件Pro/Mechanica分析环境中进行计算并优化。根据计算结果,结合实际的设计生产经验提出改进方案。Pro/ENGINEER软件的特点是：建模功能强大,建模方便,易学易用,软件的思想是全参数化驱动和数据相关性,使得模型可修改性强。Pro/ENGINEER软件“标准”环境下的几何模型可以无缝导入Pro/Mechanica分析环境中,由于具有数据相关性,即使模型几何在“标准”环境下改动,导入到Mechanica环境中定义在改动后几何的单元不需要重新定义。Pro/Mechanica分析环境采用P方法形成单元的刚度方程,对于常规结构静力分析十分有效,可以大大降低模型简化的难度和工作量,通过使用其自动检测连接并定义接触,使得设计师可以更加专注于模型细节的检查和处理。PTC软件的单一数据库功能,能够更加方便地利用参数化来改动模型。本项目是CAE技术有限元分析方法的优势在实际指导生产中的体现。CAE——计算机辅助工程,包括工程和制造业信息化的所有方面,是以现代计算力学为基础,计算机仿真为手段的工程分析技术,是实现产品现代化设计的重要技术,工程师创新设计的重要手段和工具。它是计算机技术和现代力学理论结合产生并发展起来的交叉领域,并已经发展成为制造业和工程领域的最重要的技术之一。CAE分析的关键是在三维实体建模的基础上,从产品的方案设计阶段开始,按照实际使用条件进行仿真和结构分析,按照性能要求进行设计和综合评价以便从多个设计方案中选择最佳方案。通过本项目,能够更加深刻地理解CAE技术和有限元方法在实际生产中的地位和作用。并且,也能够更加熟悉和更加深刻地理解Pro/ENGINEER软件的强大功能以及其在CAD/CAE领域中的贡献。
[Abstract]:In the second phase of a thermal power plant, the gate scraper feeder is extended in the second phase of the 1 x 330MW project. The equipment usually works in the dry coal shed coal yard of the system, and the feeder works across the coal pile. The preliminary design scheme of the equipment has been completed, and its basic structure includes the flexible side. Rigid side walking mechanism, scraper feeding mechanism, material taking metal structure, driver's room, electric room, guide device, lubricating device, detection device, limit device, power control cable reel, sprinkler, platform railing, Electrical control system and so on. The next work needs to use CAE commercial software to calculate whether the design of the metal structure of the equipment is reasonable, and what problems still exist. Because the Auto CAD software is used in the design of the project, there is no data interface with the finite element analysis tool. So we can only manually build the calculation model according to the drawings provided by the factory. This project mainly calculates and verifies the following aspects of the metal structure of the equipment: strength calculation and check, stiffness calculation and check, The stability calculation and verification as well as the verification of special components are put forward, and the feasibility optimization suggestion, optimization model and calculation are put forward. In this paper, the finite element method is used to analyze the static force of the metal structure of the equipment. In this analysis, Pro/ENGINEER software is used to model and calculate and optimize in the Pro/Mechanica analysis environment. According to the calculation results, combined with the actual design and production experience, the improved program. Pro-ENGINEER software is characterized by powerful modeling function and convenient modeling. It is easy to learn and use. The idea of software is full parameterized driving and data correlation, which makes the geometric model under the "standard" environment of Pro-ENGINEER software can be seamlessly imported into the Pro/Mechanica analysis environment because of its data correlation. Even if the model geometry is changed in the "standard" environment, the element defined in the modified Mechanica environment does not need to be redefined. The P method is used to form the stiffness equation of the element, which is very effective for the static analysis of conventional structures. It can greatly reduce the difficulty and workload of model simplification. By using it to automatically detect connections and define contacts, designers can focus more on checking model details and processing the single database function of .PTC software. It is more convenient to use parameterization to modify the model. This project is the embodiment of the advantage of the finite element analysis method of CAE technology in actual production. CAE-Computer-Aided Engineering, including all aspects of engineering and manufacturing informatization, is based on modern computational mechanics. The engineering analysis technology by means of computer simulation is an important technology to realize the modern design of products and an important means and tool for engineers' innovative design. It is a cross field produced and developed by the combination of computer technology and modern mechanics theory. CAE analysis is based on 3D solid modeling, starting from the design stage of the product, simulation and structural analysis are carried out according to the actual use conditions, and the CAE analysis has become one of the most important technologies in the manufacturing and engineering fields, and it has become one of the most important technologies in the field of manufacturing and engineering. Design and comprehensive evaluation according to performance requirements in order to select the best solution from multiple design scenarios. Through this project, the position and role of CAE technology and finite element method in practical production can be better understood. Also more familiar with and more in-depth understanding of the power of Pro/ENGINEER software and its contribution to the field of CAD/CAE.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH227

【引证文献】