装载机工作装置现代设计方法研究
发布时间：2019-06-19 23:08
【摘要】：装载机作为一种广泛使用的工程车辆，其工作装置的设计是企业产品开发中最重要的内容。经过了近30年的发展，将现代设计方法应用于装载机的研究和实践已经取得了重大进步，主要表现在计算机辅助设计、计算机辅助分析与仿真、优化设计、有限元分析等，并研发了一些专业软件，主要是在装载机计算机辅助设计和优化设计方面。随着用户对产品质量和性能要求的提高，在产品设计研发中企业对现代设计方法有进一步需求，为了填补这部分空白，本文主要进行了三个方面的工作：装载机工作装置设计数据库管理程序研发，装载机工作装置三维参数化自动建模，装载机工作装置动力学仿真。 根据装载机工作装置的计算机辅助设计过程中产生的大量数据，以及设计进程的规划与需求，本文在Visual Foxpro平台下研发了面向设计及其进程的装载机工作装置数据库系统。数据库系统包含管理模块、查询模块、文件管理模块和帮助模块。提出装载机工作装置设计数据的分类方法，设计数据库系统总体结构，实现对复杂数据的快速提取。并采用直观的树形图显示参数信息，方便设计者完成查询操作，数据的同列与汇总，提升产品设计环节的工作效率。 另在Pro/E平台下，实现对装载机工作装置的自顶向下三维模型建模。该方法运用骨架模型建立统一的参照体系，通过几何复制和发布为实体模型提供参照的重用，提升零件的独立性，避免由于删除或修改导致装配体再生失败，增强三维模型的稳定性。通过布局实现对关键参数列表的驱动，并在骨架模型中定义参数关系，使零件设计能够与上层设计意图保持一致。然后，利用VB作为开发工具，借助Automation Gateway插件的函数库对Pro/E三维模型进行二次开发。完成后的程序可实现装载机工作装置的总体布局设计和零件设计，在二次开发界面中对关键参数进行一次变更可以实现对多个零件的修改，进而实现对装配体的参数化设计，，避免反复打开零件模型，提高整体设计效率。最后，运用ADAMS软件对装载机工作装置卸料工况下的动臂油缸载荷进行仿真分析，结果表明ZL50型装载机的动臂油缸缸径设计能够满足要求，不会产生回缩现象。 经试用表明，上述研发程序可以较好满足设计师在产品设计中对正在设计机型和大量参照机型进行数据处理的功能要求，只需通过改变部分参数数据就可以实现快速三维建模，展示运动性能及可能的机构干涉，并可快速转化为有限元模型。
[Abstract]:As a widely used engineering vehicle, the design of its working device is the most important content in the product development of enterprises. After nearly 30 years of development, great progress has been made in the application of modern design methods to the research and practice of loaders, mainly in computer aided design, computer aided analysis and simulation, optimization design, finite element analysis, etc., and some professional software has been developed, mainly in the aspects of computer aided design and optimization design of loaders. With the improvement of product quality and performance requirements, enterprises have further demand for modern design methods in product design and research and development. In order to fill this part of the gap, this paper mainly carries out three aspects of work: research and development of database management program for loader working device design, 3D parametric automatic modeling of loader working device, and dynamic simulation of loader working device. According to a large number of data generated in the process of computer aided design of loader working device, as well as the planning and requirement of design process, a database system of loader working device oriented to design and its process is developed on Visual Foxpro platform. The database system includes management module, query module, file management module and help module. The classification method of design data of loader working device is put forward, the overall structure of database system is designed, and the rapid extraction of complex data is realized. The intuitionistic tree chart is used to display the parameter information, which is convenient for the designer to complete the query operation, the same column and summary of the data, and improve the work efficiency of the product design link. In addition, the top-down 3D model of loader working device is realized on Pro/E platform. In this method, the skeleton model is used to establish a unified reference system, which provides reference reuse for the solid model through geometric replication and publishing, improves the independence of the parts, avoids the failure of assembly regeneration due to deletion or modification, and enhances the stability of the three-dimensional model. The drive of the key parameter list is realized by layout, and the parameter relationship is defined in the skeleton model, so that the design of the part can be consistent with the design intention of the upper layer. Then, using VB as the development tool, the Pro/E 3D model is secondary developed with the help of the function library of Automation Gateway plug-in. The completed program can realize the overall layout design and part design of the loader working device, and the modification of multiple parts can be realized by changing the key parameters in the secondary development interface, so as to realize the parametric design of the assembly, avoid repeatedly opening the part model and improve the overall design efficiency. Finally, the load of the moving arm cylinder under the unloading condition of the working device of the loader is simulated and analyzed by using ADAMS software. The results show that the cylinder diameter design of the moving arm of the ZL50 loader can meet the requirements and will not produce the phenomenon of shrinkage. The trial results show that the above R & D program can meet the functional requirements of designers for data processing of the model under design and a large number of reference models in product design. Only by changing some parameter data can the rapid 3D modeling be realized, the motion performance and possible mechanism interference can be displayed, and can be quickly transformed into finite element model.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
本文编号：2502708
[Abstract]:As a widely used engineering vehicle, the design of its working device is the most important content in the product development of enterprises. After nearly 30 years of development, great progress has been made in the application of modern design methods to the research and practice of loaders, mainly in computer aided design, computer aided analysis and simulation, optimization design, finite element analysis, etc., and some professional software has been developed, mainly in the aspects of computer aided design and optimization design of loaders. With the improvement of product quality and performance requirements, enterprises have further demand for modern design methods in product design and research and development. In order to fill this part of the gap, this paper mainly carries out three aspects of work: research and development of database management program for loader working device design, 3D parametric automatic modeling of loader working device, and dynamic simulation of loader working device. According to a large number of data generated in the process of computer aided design of loader working device, as well as the planning and requirement of design process, a database system of loader working device oriented to design and its process is developed on Visual Foxpro platform. The database system includes management module, query module, file management module and help module. The classification method of design data of loader working device is put forward, the overall structure of database system is designed, and the rapid extraction of complex data is realized. The intuitionistic tree chart is used to display the parameter information, which is convenient for the designer to complete the query operation, the same column and summary of the data, and improve the work efficiency of the product design link. In addition, the top-down 3D model of loader working device is realized on Pro/E platform. In this method, the skeleton model is used to establish a unified reference system, which provides reference reuse for the solid model through geometric replication and publishing, improves the independence of the parts, avoids the failure of assembly regeneration due to deletion or modification, and enhances the stability of the three-dimensional model. The drive of the key parameter list is realized by layout, and the parameter relationship is defined in the skeleton model, so that the design of the part can be consistent with the design intention of the upper layer. Then, using VB as the development tool, the Pro/E 3D model is secondary developed with the help of the function library of Automation Gateway plug-in. The completed program can realize the overall layout design and part design of the loader working device, and the modification of multiple parts can be realized by changing the key parameters in the secondary development interface, so as to realize the parametric design of the assembly, avoid repeatedly opening the part model and improve the overall design efficiency. Finally, the load of the moving arm cylinder under the unloading condition of the working device of the loader is simulated and analyzed by using ADAMS software. The results show that the cylinder diameter design of the moving arm of the ZL50 loader can meet the requirements and will not produce the phenomenon of shrinkage. The trial results show that the above R & D program can meet the functional requirements of designers for data processing of the model under design and a large number of reference models in product design. Only by changing some parameter data can the rapid 3D modeling be realized, the motion performance and possible mechanism interference can be displayed, and can be quickly transformed into finite element model.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
【引证文献】
相关硕士学位论文 前1条
1 王丽;装载机牵引性能分析与优化软件的开发[D];华南理工大学;2013年
本文编号：2502708
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