Abstract: In order to improve the anti-turnover ability of water hydraulic slipper friction pairs and realize it’s flowing characteristics more accurately, the new structure of water hydraulic shipper friction pairs named three-cavity independent supporting is presented and is lubrication characteristics such as anti-turnover ability and leakage etc. are researched. For this kind of slipper, the idea of the independent damping and supporting cavity is adopted and the independent stiffness adjustment is used to increase its anti-turnover ability. Bysimulation and analysis, the differences of anti-over ability between the new slipper friction pairs and the common ones are compared. Furthermore, the flowing pattern in the flow field of water hydraulic slipper friction pairs is possibly laminar flow but not the wholly laminar one after the factors such as flowing inertia of water and the surface roughness etc. are generally considered, therefore, the difference of the flowing pattern model may directly affect the calculating results of leakage flow rate and further affect the accuracy of the design calculation. The results can present certain references and more accurate calculation idea wher the structure design of the slipper friction pairs of water hydraulic piston pump is performed.

Key words: Anti-turnover, Lubrication, Water hydraulic piston pump Slipper friction pairs, Water hydraulics