纯水液压传动缸的研制及动态特性研究

发布时间：2018-05-04 05:06

本文选题：水压传动 + 水压缸设计　；参考：《昆明理工大学》2017年硕士论文

【摘要】：当今的社会飞速发展,在经济快速发展的情况下环境污染和能源减少现象日趋严重。纯水液压传动技术是把纯水替代普通液压油的一种绿色环保的的传动技术。众所周知,纯水具有无毒、来源广泛,绿色卫生,阻燃性好等优点,当今世界许多国家都致力于纯水液压技术的研究工作,水压技术的进步与发展已成为液压领域一个重要的发展趋势。本论文在基于大量的国内外参考文献的基础上,论述了国内外水压系统及元件的研究与发展现状,提出了纯水液压传动缸研究的方向和内容。通过对纯水液压传动缸的分析研究,为水压系统及元件的设计提供了一定的依据。本论文来源于云南省科技计划项目《绿色液压传动节能型无静差压力控制阀的理论及试验研究》的部分内容。本文针对水介质在水压传动的摩擦学缺陷及腐蚀性作了概括分析,分析了水压缸跟油压缸在材料、密封、结构、摩擦力及过流特性等方面的区别,结合现代液压技术与现代仿真技术对纯水液压传动缸进行了研究与设计,分析了水压传动缸面临的关键性技术问题。首先,对水压缸元件在水压系统中的存在的现状问题做了研究,并介绍了水压缸领域重点研究的关键技术问题。其次,通过建立水压缸系统模型,做了基于AMESim的水压缸系统的泄漏量仿真,得出了不同间隙及不同水动力粘度系数对泄漏量的影响为了减少泄漏,间隙高度应小于0.01mm;对低泄漏低摩擦力水压缸特性进行了分析,基于Fluent仿真分析了水压缸活塞与缸筒的间隙泄漏量的状况,研究了相应的密封技术,在此基础上进行了水压缸尺寸计算及结构的设计,建立了液压缸的三维模型;基于Simulink软件做了水压缸系统的建模与仿真;最后,研制出纯水液压传动缸的样件,对水压试验台的阀体进行了改装设计,结合水压传动实验台对水压缸的动静态特性进行了测量与分析,得出了被测缸的的测试曲线,分析了实验结果误差及原因。通过分析被测缸的静态实验曲线,结果表明研制的水压缸达到了预期要求。
[Abstract]:With the rapid development of society, environmental pollution and energy reduction are becoming more and more serious. Pure water hydraulic transmission technology is a kind of green transmission technology which replaces the ordinary hydraulic oil with pure water. As we all know, pure water has the advantages of non-toxic, wide source, green sanitation, good flame retardancy and so on. Nowadays, many countries in the world are devoted to the research work of pure water hydraulic technology. The progress and development of hydraulic technology has become an important development trend in hydraulic field. Based on a large number of references at home and abroad, this paper discusses the research and development status of water pressure system and components at home and abroad, and puts forward the research direction and content of pure water hydraulic transmission cylinder. Through the analysis and research of pure water hydraulic transmission cylinder, it provides a certain basis for the design of hydraulic system and components. This paper comes from the theory and experimental research of the green hydraulic drive energy saving pressure control valve in Yunnan province science and technology project. In this paper, the tribological defects and corrosiveness of water medium in hydraulic transmission are analyzed, and the differences between hydraulic cylinder and hydraulic cylinder in material, seal, structure, friction force and overflow characteristic are analyzed. Combined with modern hydraulic technology and modern simulation technology, the research and design of pure water hydraulic transmission cylinder are carried out, and the key technical problems faced by water hydraulic transmission cylinder are analyzed. Firstly, the existing status of hydraulic cylinder components in hydraulic system is studied, and the key technical problems in the field of hydraulic cylinder are introduced. Secondly, by establishing the hydraulic cylinder system model, the leakage rate simulation of hydraulic cylinder system based on AMESim is done, and the influence of different clearance and different hydrodynamic viscosity coefficient on leakage is obtained in order to reduce leakage. The clearance height should be less than 0.01 mm. The characteristics of hydraulic cylinder with low leakage and low friction force are analyzed. Based on Fluent simulation, the condition of clearance leakage between piston and cylinder is analyzed, and the corresponding sealing technology is studied. On this basis, the size calculation and structure design of the hydraulic cylinder are carried out, and the three-dimensional model of the hydraulic cylinder is established. The modeling and simulation of the hydraulic cylinder system based on Simulink are done. Finally, the sample of the pure water hydraulic transmission cylinder is developed. In this paper, the valve body of the hydraulic test bench is modified. The static and static characteristics of the hydraulic cylinder are measured and analyzed in combination with the hydraulic transmission test bench. The test curve of the cylinder under test is obtained, and the error and reason of the experimental result are analyzed. By analyzing the static experimental curve of the cylinder under test, the results show that the developed hydraulic cylinder meets the expected requirements.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH137.51

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