一种典型液压动密封油膜厚度的研究

摘要

This paper studies the film thickness of dynamic seals at the contact of vanes and cylinder which are used in swing motor.A mathematical model is established for the combined seal structure,and the film thickness in sealing gap is gotten by calculating the amount of each part’s deformation.The established mathematical model takes these factors,such as sealing pressure,relative sliding velocity as well as the physical characteristics of the seal on the film thickness,into account,which provides evidences for improving the dynamic sealing perform-ance.%以摆动马达为例，研究了摆动马达叶片与缸套接触处动密封的油膜厚度。针对该处组合式密封结构建立了一个数学模型，通过计算各部分的变形量从而计算出密封间隙的油膜厚度。该数学模型中考虑了密封压力、相对滑行速度以及密封件的物理特性等对油膜厚度的影响，从而为动密封性能的改进提供依据。