斜盘式轴向柱塞泵滑靴副静压支承润滑特性研究

发布时间：2018-06-11 23:09

本文选题：斜盘式轴向柱塞泵 + 间隙油膜　；参考：《兰州理工大学》2012年硕士论文

【摘要】：轴向柱塞泵是液压系统中最重要的动力元件之一，广泛应用于各类机械装备中。轴向柱塞泵是机构和流体的统一体。流体和机构耦合是轴向柱塞泵的基本特征，也是影响其性能的研究重点和难点。滑靴副泄漏作为柱塞泵泄漏主要组成部分，其影响因素众多，，形成机理复杂，成为泄漏控制的研究难点，也是学科前沿研究的热点。本学位论文针对轴向柱塞泵滑靴机构和静压支承润滑特性展开研究，目的在于减少磨损和泄漏，增加滑靴副的使用寿命提高轴向柱塞泵的综合性能，为柱塞泵的结构设计和优化提供手段，具有广泛的工程应用背景和重要的学术研究价值。本学位论文在分析了主要的摩擦副对轴向柱塞泵整体性能的影响的基础上分析了滑靴副的受力和运动情况以及静压支承润滑特性，建立数学模型，并通过Simulink和AMESim联合建模仿真得到了油膜厚度，然后创建了轴向柱塞泵滑靴副的三维流道模型，该模型考虑了油膜厚度对于磨擦和泄漏的影响，不同的阻尼孔径长比会影响油膜厚度，因此本文给出了同一油膜厚度下不同的径长比的滑靴副模型并分析其对于滑靴副表面受力的影响，为柱塞泵的外部输出特性与内部流体特性研究提供了手段，为柱塞泵支承油膜研究和结构设计提供了依据。论文的主要结构如下：第一章，对国内外主要柱塞泵研究单位的相关研究方法和重点进行了调研，综述了该领域的研究现状，在此基础上指出了论文的研究目的和意义，确定了硕士学位论文课题研究的内容。第二章，分析了柱塞泵滑靴副的受力和运动及其润滑特性相关理论，为建立三维流道模型及其测量油膜厚度和CFD仿真奠定了基础。第三章，通过润滑特性的分析得出润滑特性的数学表述，并通过Simulink和AMESim建立数学模型，进而通过联合仿真得到油膜厚度。第四章，针对柱塞泵滑靴副流体系统，构建了滑靴副三维流道模型。考虑到油膜的影响，并对Fluent中的求解设置进行了说明。第五章，分析CFD仿真结果。研究了同一在油膜厚度、不同阻尼孔径长比的情况下滑靴副表面受力情况，并进行了对比。第六章，总结了论文的主要研究工作，给出了主要的研究结论，指出硕士学位论文研究课题的创新点及其不足，并对未来的研究工作进行展望。
[Abstract]:Axial plunger pump is one of the most important power elements in hydraulic system , which is widely used in all kinds of mechanical equipment . The axial plunger pump is the main part of axial plunger pump , and it is the focus and difficult point to study the performance of axial plunger pump . The paper aims at reducing wear and leakage , increasing the service life of sliding shoe and improving the comprehensive performance of axial plunger pump . It has wide application background and important academic research value .

Based on the analysis of the influence of the main friction pairs on the overall performance of axial piston pump , the paper analyzes the stress and movement of the pair of sliding shoes and the characteristics of hydrostatic bearing lubrication , establishes a mathematical model , and establishes a three - dimensional flow channel model of axial piston pump sliding shoe pair .

The main structure of the paper is as follows :

In the first chapter , the relevant research methods and the key points of the research units of the main piston pump at home and abroad are researched , the research status of this field is summarized , and the research purpose and significance of the thesis are pointed out , and the contents of the research of the dissertation are determined .

In chapter 2 , the stress and movement of the slipper pair of plunger pump and its lubrication characteristics are analyzed , which lays a foundation for the establishment of three - dimensional flow channel model and its measurement oil film thickness and CFD simulation .

In the third chapter , the mathematical expression of lubrication characteristics is obtained through the analysis of lubrication characteristics , and the mathematical model is established by Simulink and Sim Sim , and then the thickness of the oil film is obtained through joint simulation .

In chapter 4 , the three - dimensional runner model of the sliding shoe is constructed for the secondary fluid system of the sliding shoe of the plunger pump . The influence of the oil film is taken into consideration , and the solution setting of the oil film is explained .

In chapter 5 , the results of CFD simulation are analyzed . The stress condition of the sub - surface of the sliding shoe with the same oil film thickness and different damping aperture ratio is studied , and the comparison is made .

The sixth chapter summarizes the main research work of the thesis , gives the main research conclusion , points out the innovation point and deficiency of the research subject of Master ' s Master ' s Master ' s degree , and looks forward to the future research work .
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH322

【参考文献】