液压机械组合传动型装载机研究

发布时间：2018-02-22 04:19

本文关键词： 装载机液压传动组合传动系统设计建模仿真　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着中国经济的快速发展、基础设施的不断完善，使得中国成为工程机械最大的市场之一。装载机是工程机械的主要机种之一，可以完成铲掘、装卸、运输等多种工况作业，广泛应用于公路、铁路、水电、建筑、港口、矿山等建设工程行业。传动系统是装载机的重要组成系统之一，决定着整机的性能。液压机械组合传动装载机克服了传统的液力传动系统高效区范围窄、整机性能低、传动准确性和刚度不够高、可控性差、布置形式单一等缺点并继承了液力传动系统的大多数优点。尽管液压机械组合传动技术日趋成熟并早已投入生产使用，但是国内液压和电子技术比较落后，液压机械组合传动在装载机上的应用研究较少。本文以液压机械组合传动技术在装载机上的应用为研究内容，对液压机械组合传动型装载机进行了较为全面的研究。在查阅大量国内外相关专业资料及文献的基础上，本文概述了国内外液压机械组合传动型装载机的研究现状及发展趋势，介绍了液压机械组合传动与液力机械传动相比所具有的优势。阐述了液压机械组合传动方案的几种形式，并举例简单介绍了液压机械组合传动系统的工作原理，并对液压机械组合传动装置的特性及与发动机的匹配控制进行了分析。在国内常见的ZL50装载机基本参数的基础上，根据前面的分析对其液压机械组合传动系统进行设计计算，确定液压泵、液压马达等的选型，并在此基础上建立了各个环节的数学模型。根据所设计的液压机械组合传动系统各参数和已建立的数学模型，分别利用AMESim软件进行变量泵、变量马达和整个液压机械组合传动系统的仿真，并进行仿真分析。结果表明所设计的液压机械组合传动系统是正确的，完全可以应用于装载机的生产中。另外，在设计整个系统时，，应布局合理，减少管道长度，这样能使系统获得较好的动态响应。
[Abstract]:With the rapid development of Chinese economy, the improvement of infrastructure, the Chinese market has become one of the biggest construction machinery. The loader is one of the main types of engineering machinery, can complete digging, loading and unloading, transportation and other operation conditions, widely used in highway, railway, hydropower, construction, ports, mines and other construction projects industry. Drive system is an important component of system of loader, determines the performance of the whole machine.
To overcome the traditional high efficiency hydraulic transmission system of a narrow range of hydraulic machinery driving loader, the performance is low, the transmission accuracy and stiffness is not high enough, poor controllability, disadvantages of layout of single and inherits most of the advantages of the hydraulic drive system. Although the combination of hydraulic machinery transmission technology matures and has been put into production and use, but domestic hydraulic and electronic technology is relatively backward, hydraulic mechanical transmission in the application of combined loading machine less. Based on the hydraulic mechanical transmission technology in the application of combination loader as the research content, the combination of hydraulic mechanical drive type loader is studied.
On the basis of consulting a large number of domestic and foreign related professional materials and documents, this paper summarizes the research status and development trend of hydraulic mechanical combined transmission loaders at home and abroad, and introduces the advantages of hydraulic mechanical combined transmission compared with hydraulic mechanical transmission.
This paper expounds several forms of the combined transmission scheme of hydraulic machinery, and briefly introduces the working principle of the hydraulic mechanical combined transmission system with examples, and analyzes the characteristics of the hydraulic mechanical combined transmission device and the matching control with the engine.
On the basis of the basic parameters of ZL50 loaders commonly used in China, based on the above analysis, the hydraulic mechanical combined transmission system is designed and calculated, and the selection of hydraulic pumps, hydraulic motors and so on is determined. Based on that, a mathematical model of all links is established.
According to the parameters of the hydraulic mechanical transmission system of the combination of design and has established a mathematical model of the variable pump, respectively using AMESim software, simulation of variable motor and the hydraulic mechanical driving system, and simulation analysis is carried out. The results show that the hydraulic machinery combination drive system design is correct, can be applied to the loader the production. In addition, in the design of the whole system, should rationally, reduce the length of the pipeline, which makes the system have better dynamic response.

【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH243

【参考文献】