内曲线水压马达定子曲线与柱塞副的研究

发布时间：2019-06-20 06:43

【摘要】：水液压技术以其在环境保护、阻燃性好等方面的优点，逐渐引起了人类关注，世界各工业发达国家都在水液压系统、元件方面进行了研究，并有产品应用在实际当中。我国自上世纪九十年代才开始海(淡)水液压技术的研究，，起步较晚，对于水液压元件与系统的研究仍处于基础阶段，但国内一些高校如华中科技大学、浙江大学、北京理工大学、西安交通大学等对于水液压技术的研究取得了不错的进展。海(淡)水的运动粘度大约为矿物型液压油的1/30，电导率是液压油的1000倍，水的泄漏量远比液压油大，电化学腐蚀性比液压油强，因此采用海(淡)水作为液压传动的介质面临磨损腐蚀严重、泄漏量大、气蚀等问题，这是制约水液压技术发展的原因。随着材料学、加工制造学、计算机仿真学的发展，为水液压技术的研究提供了条件。水液压轴向柱塞泵、水液压轴向柱塞马达、水液压叶片马达、水液压测试系统等在实践中得到广泛应用。本文主要研究径向柱塞低速大扭矩内曲线水液压马达，在此以前水液压马达的研究主要在轴向柱塞液压马达、叶片马达方面，因此本马达的设计为国内的水液压元件的研究填补了空白。本文研究的主要内容有：首先，运用运动学观点采用Matlab编程绘制内曲线马达的定子曲线，并分析影响曲线的重要因素，选取最佳曲线；在选取曲线的基础上，运用Matlab编程进行柱塞组运动学和受力分析，得出滚动体与定子的接触应力随幅角的变化规律；用理论分析与数值模拟方法(CFD)对柱塞与缸体间缝隙的泄漏量进行分析得出结论；用弹性动力润滑理论对滚动体与定子间的最小水膜、油膜厚度值进行了分析对比。
[Abstract]:Water hydraulic technology has gradually attracted human attention because of its advantages in environmental protection and good flame retardancy. All industrial developed countries in the world have carried out research in water hydraulic system and components, and some products have been applied in practice. The research of sea (light) water hydraulic technology has only begun in China since the 1990s, and the research on water hydraulic components and systems is still in the basic stage. However, some colleges and universities in China, such as Huazhong University of Science and Technology, Zhejiang University, Beijing Institute of Technology, Xi'an Jiaotong University and so on, have made good progress in the research of water hydraulic technology. The kinematic viscosity of sea (light) water is about 1 脳 30 of that of mineral hydraulic oil, the conductivity is 1000 times of that of hydraulic oil, the leakage of water is much larger than that of hydraulic oil, and the electrochemical corrosion is stronger than that of hydraulic oil. Therefore, the use of sea (light) water as the medium of hydraulic transmission is faced with serious wear and corrosion, large leakage, cavitation erosion and so on, which is the reason that restricts the development of water hydraulic technology. With the development of material science, processing manufacturing science and computer simulation, it provides conditions for the research of water hydraulic technology. Water hydraulic axial piston pump, water hydraulic axial plunger motor, water hydraulic vane motor, water hydraulic test system and so on have been widely used in practice. This paper mainly studies the low speed and high torque water hydraulic motor of radial plunger. Before this, the research of water hydraulic motor is mainly in the aspects of axial plunger hydraulic motor and blade motor, so the design of this motor fills in the blank for the research of domestic water hydraulic components. The main contents of this paper are as follows: firstly, the stator curve of the inner curve motor is drawn by Matlab programming from the kinematic point of view, and the important factors affecting the curve are analyzed, and the best curve is selected. On the basis of selecting the curve, the kinematic and force analysis of the plunger group is carried out by using Matlab programming, and the variation law of the contact stress between the roller and the stator with the angle of amplitude is obtained. The theoretical analysis and numerical simulation method (CFD) are used to analyze the leakage of the gap between plunger and cylinder block, and the minimum water film and oil film thickness between roller and stator are analyzed and compared with the theory of elastic dynamic lubrication.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.51

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