全液压装载机液压系统仿真与实验研究

发布时间：2018-01-01 15:37

本文关键词：全液压装载机液压系统仿真与实验研究　出处：《吉林大学》2012年硕士论文　论文类型：学位论文

【摘要】：近年来，随着我国经济的迅猛发展，大量基础建设如公路、水电、港口、建筑及矿山等的不断开发，装载机凭借快速作业、机动性能好、工作效率高、操作灵活等优点被大量的使用，仅2011年装载机的销量就达23万辆。全液压装载机作为装载机家族中的一员，其工作系统与行驶系统均采用液压驱动，这种驱动方式的装载机具有结构紧凑、作业效率高、低能耗、宽高效区等优点，因此发展速度很快。随着社会发展、工程需要及技术的进步，这种驱动方式的装载机必定会成为一种发展趋势。因此全液压轮式装载机的研制便变得愈来愈有意义，越来越多厂家开始投入人力、物力对其进行研发。我国工业基础比较薄弱以及起步比较晚，在装载机研发方面虽说已经取得的一定的成绩，但相对于欧美国家还有不小的差距。目前国内自行设计生产的载机主要是液力传动，对于全液压装载机的理论研究还比较少。本文通过对全液压装载机液压系统的分析，建立了关键部件的数学模型，对装载机液压系统中工作液压系统和行走液压系统建立了AMESim仿真模型，并进行仿真分析与测试对比，分析结果表明，仿真模型建立正确，这为全液压装载机的动态化数字化设计提供了理论依据。本文主要研究内容包括： 1、介绍了全液压装载机液压系统的发展趋势，并分析了全液压装载机液压系统的工作原理，同时建立了系统的数学模型，为系统分析以及利用软件建立模型奠定基础。 2、利用液压仿真软件AMESim分别建立了全液压装载机工作液压系统、行走液压系统以及发动机系统模型，，并对整机的工作过程进行了动态分析。 3、对装载机液压系统进行试验研究，测得工作液压系统、行走液压系统在不同工况下的压力曲线。将试验测得曲线与软件仿真获得曲线进行对比，验证仿真模型的正确性。
[Abstract]:In recent years, with the rapid development of China's economy, a large number of infrastructure such as roads, hydropower, ports, buildings and mines, such as the continuous development of loaders by virtue of rapid operation, good mobility, high efficiency. Flexible operation and other advantages of a large number of use, only in 2011 the sales of loaders reached 230,000. As a member of the family of full hydraulic loaders, both the working system and the driving system are driven by hydraulic pressure. This type of loader has compact structure, high working efficiency and low energy consumption. With the development of society, engineering needs and technology progress. Therefore, the development of full hydraulic wheel loader becomes more and more meaningful, and more and more manufacturers begin to put in manpower. Material resources for its research and development. China's industrial base is relatively weak and start relatively late, in the loader R & D although has made certain achievements. However, there is still a large gap between Europe and America. At present, the domestic self-designed and produced loaders are mainly hydraulic transmission, and the theoretical research on full hydraulic loaders is still relatively few. Through the analysis of the hydraulic system of the full hydraulic loader, the mathematical model of the key components is established, and the AMESim simulation model of the working hydraulic system and the walking hydraulic system in the hydraulic system of the loader is established. The simulation analysis and test results show that the simulation model is correct, which provides a theoretical basis for the dynamic digitization design of full hydraulic loader. The main contents of this paper are as follows: 1. The development trend of hydraulic system of full hydraulic loader is introduced, and the working principle of hydraulic system of full hydraulic loader is analyzed. At the same time, the mathematical model of the system is established. It lays the foundation for system analysis and software modeling. 2. The working hydraulic system, the walking hydraulic system and the engine system model of the whole hydraulic loader are established by using the hydraulic simulation software AMESim, and the dynamic analysis of the working process of the whole machine is carried out. 3. The hydraulic system of loader is tested, and the pressure curves of working hydraulic system and walking hydraulic system under different working conditions are measured and compared with the curves obtained by software simulation. The correctness of the simulation model is verified.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243

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