ISSN   1004-0595

CN  62-1224/O4

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考虑上游泵送效应的滑靴副动压润滑特性

Dynamic Pressure Lubrication Characteristics of Slipper/Swash Plate Pair Considering Upstream Pumping Effect

  • 摘要: 为了改善轴向柱塞泵滑靴副的润滑性能,利用仿生学原理,在斜盘上构建倾斜椭圆形微坑织构. 通过微坑产生的动压效应和上游泵送效应,以期能够优化滑靴副的摩擦性能并减少泄漏量. 基于CFD方法开展了具有椭圆形微坑织构滑靴副的建模与润滑性能研究,揭示了不同润滑介质黏度和转速下柱塞泵滑靴副的承载能力、泄漏量和摩擦系数随微坑倾斜角度的变化规律. 研究结果表明:通过在斜盘面上建立无倾斜椭圆形微坑,能明显提高滑靴副的承载能力,并降低摩擦系数,但会导致泄漏量增大;而在此基础上,通过将椭圆形微坑相对于其滑动方向旋转一定角度,滑靴副的承载能力和摩擦系数不会明显变化,但可以显著减小润滑介质泄漏量.

     

    Abstract: In order to improve the lubrication performance of the slipper/swash plate pair on axial piston pump, the elliptical micro-pits texture was constructed on the swash plate based on the bionics principle. The effect of dynamic pressure and upstream pumping were generated by the elliptical micro-pits, and it can be used to optimize the friction performance of the slipper/swash plate pair and reduce the leakage. Based on the CFD method, the modeling and lubrication performance of the slipper/swash plate pair were carried out with the elliptical micro-pit texture. It was revealed that the carrying capacity, leakage and friction coefficient of the slipper/swash plate pair changed with variation of the tilt angle of micro-pit under different speed and different viscosity of the lubricant. The results showed that the carrying capacity of the slipper/swash plate pair was significantly improved, and the friction coefficient decreased, but the leakage increased after establishing a non-inclined elliptical micro-pit on the swash plate. Spinning a certain angle with respect to its sliding direction reduced the amount of leakage mostly while the carrying capacity and friction coefficient of the slipper/swash plate pair remained stable.

     

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