美国马歇尔航天飞行中心研制了一种新型的滚珠轴承支承座圈,工作时可由薄层液体形成一个犹如辅助支承的阻尼密封垫。它不仅显著地减小了滚珠轴承的静载荷及动载荷,而且也减小了当转子接近于额定工作速度时产生的二阶振型的振幅。该种结构原用于航天飞机上的高压氧气涡轮泵,但其设计原理可适用于涡轮机机和其他机械的支承中。图示是其结构原理图。轴承外圈安装在支承座圈 The United States Marshall Space Flight Center has developed a new type of ball bearing support seat, the work can be formed from a thin layer of liquid like a supporting damping gasket. Not only does it significantly reduce the static and dynamic loads on ball bearings, it also reduces the amplitude of the second-order modes that occur when the rotor approaches the nominal operating speed. This kind of structure was originally used for the high-pressure oxygen turbine pump on the space shuttle, but its design principle can be applied to the support of the turbine and other machinery. Icon is the structure of the schematic. Bearing outer ring mounted on the bearing seat