轴向柱塞泵滑靴油膜动态仿真

Dynamic Simulation of Slipper Bearings in Axial Piston Pumps

对轴向柱塞泵滑靴润滑油膜的动态规律进行了数学建模,给出了缸体旋转一周,滑靴润滑油膜随缸体转角的变化.分析了滑靴润滑油膜与缸体转速及柱塞腔压力之间的变化规律.仿真结果表明:由转速所带来的动压效应对滑靴润滑油膜厚度影响较大.而离心力则显著影响滑靴的倾斜姿态,在离心力的倾覆力矩作用下,滑靴将沿径向向外倾斜,并且随着转速的提高倾斜程度加剧.

In order to predict the dynamic behaviors of slipper bearings in axial piston pumps, a dynamic model based on the lubrication mechanism of the slippers has been presented. The laws of variation in film thickness with rotary speed and piston pressure were obtained. It is shown that hydrodynamic effect caused by the speed has much effect on the film thickness of the slippers. The effect of the centrifugal loads on the attitude of the slippers has also been analyzed. The tilting moment arising from the centrifugal loads always causes the slipper to tilt outwards, and this effect is more pronounced at high speed.