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液压元件是液压系统基本组成单元,应用十分广泛,元件结构中存在大量间隙配合,包括平面结构、锥面结构、环状结构、线状结构等,配合间隙是否科学合理,极大地影响元件性能以及工作寿命。针对液压元件配合间隙开展研究,对间隙中摩擦磨损机制、间隙润滑机制进行分析,通过仿真研究了间隙内油液温度变化对元件性能的影响,研究表明:随活塞运动频率增大,间隙内油温升高,密封结构泄漏量随之增大,液压元件容积效率下降;同时分析了间隙内油膜初始温度与油液温升和泄漏量的关系,获得了间隙内油液温度和泄漏量均随初始温度升高而增大的结论,该研究结果可做为设计与使用人员参考。
Hydraulic components are the basic components of the hydraulic system. They are widely used. There are a large number of gaps in the component structure, including the planar structure, the conical surface structure, the ring structure and the linear structure. Whether the gap is scientific and reasonable and the performance of the component is greatly affected life span. Aiming at the gap between hydraulic components, the mechanism of friction and wear and the mechanism of gap lubrication are analyzed. The influence of the temperature change of the oil in the gap on the performance of the components is studied by simulation. The results show that with the increasing of piston’s movement frequency, When the temperature rises, the leakage of sealing structure increases and the volumetric efficiency of hydraulic components decreases. The relationship between the initial temperature of oil film and the temperature rise and leakage of oil is also analyzed. The temperature and leakage of oil in the gap are obtained The initial temperature increases and the conclusion of the increase, the results of the study can be used as a reference for the design and use of personnel.