提出一种可倾瓦径向滑动轴承的油膜力模型以及可倾瓦瓦块的摆动方程,并使用该模型分析可倾瓦轴承的预载荷,包角,瓦块摆角等对油膜力的影响;分析可倾瓦轴承油膜力和普通轴承油膜力的区别。运用Runge-Kutta等方法将可倾瓦轴承油膜力模型应用于Jeffcott转子,分析轴承瓦块摆角的特性。分析结果表明模型的高效性和可倾瓦轴承的特性。

A method to model the oil film force of tilting pad bearing and the torque of the pads was proposed. Influence of the pre-load, the covering angle and the swinging angle of the pad on the oil film force was analyzed with this model. The difference between the oil film forces of the ordinary sliding bearing and the tilting pad bearing was analyzed. Finally, the vibration characteristic of the tilting pad was studied by applying the model to the Jeffcott rotor with the use of the Runge-Kutta method. The result shows that this model is effective for analyzing the characteristic of the tilting pad bearing.

研究可倾瓦滑动轴承的静态性能。采用有限差分法求解可倾瓦滑动轴承的雷诺方程，编写三瓦可倾瓦滑动轴承油膜压力分布的计算程序，使用Matlab软件对雷诺方程进行迭代运算，得到轴承的油膜承载力和油膜厚度的分布。结果表明：三瓦可倾瓦滑动轴承轴瓦上同一周向角度的油膜厚度在轴向上是相等的，最小油膜厚度与最大油膜压力均出现在下轴瓦上；在其他条件不变的情况下，偏心率越大时，油膜承载力越大，阻尼系数、温升和功耗越低，而温升和功耗随轴颈转速的增加而呈近似线性规律增加，因此在设计与选用轴承时，为满足轴承承载力的需求，应尽量选择低的轴颈转速和高的偏心率。

The static performances of tilting pad bearings were studied.The Reynolds equation of tilting pad sliding bearings was solved by finite difference method,the calculation program of the oil film pressure distribution of three tilting pad sliding bearing was written,and the oil film bearing capacity and film thickness distribution were obtained through the iterative calculation of Reynolds equation using Matlab software.The results show that the film thickness in the same axial angle of three tilting pads bearing bush is equal,and the minimum film thickness and maximum film pressure are both ap-peared in the lower bush.When other conditions are the same,the higher the eccentric rate is,the greater the bearing ca-pacity of the oil film is,and the lower the damping ratio,temperature and power consumption are.While the temperature rising and power consumption are increased in linearity along with the axis journal speed.Therefore in the design and se-lection of bearings,the low-speed and hig

建立了滑动轴承的基于短轴承非线性油膜力模型,通过转速对轴承动力学特性的影响研究,得到了偏心率、最小油膜厚度、最大油膜压力、摩擦功耗、温升、临界轴颈质量、刚度系数、阻尼系数、二维和三维油膜压力的影响因素研究;在对三维油膜压力分析时发现转速存在一个临界值,当转速低于这个临界值时,转速对最大油膜压力影响较大,当转速高于这个临界值时,转速对最大油膜压力影响不大。

Two bearing dynamic models were introduced,including the traditional eight-parameter bearing model and the short-bearing oil film force model.The effects of rotor speed and Sommerfeld number on bearing dynamic characteristics were studied,and the influencial factors were inspected,such as the eccentricity,minimum film thickness, maximum film pressure,friction power,temperature,critical journal mass,stiffness coefficient,damping coefficient,and 2D and 3D film pressure.It was shown that there exists a critical rotor speed when analyzing 3D film pressure,the maximum film pressure is greatly affected by the rotor speed when the rotor speed is below the critical speed,and the maximum film pressure is slightly affected when the rotor speed is higher than the critical speed.

油膜轴承是一种主要零件加工精度及各种相关参数的匹配都比较理想的滑动轴承。本文通过对油膜轴承装机过程中工况问题的分析,在研究和实践的基础上着重论述了油膜轴承精益化装配的标准作业流程,以及常见问题的解决方案,为提高产品运行质量、规避常见问题、缩短换辊时间提供了技术支持和保障。

T he oil film bearing is a kind of sliding bearing w hich is more accurate machining and has better technical specifications . Based on research and practice ,this article analyses on producing problems during the oil film bearing installation ,focuses on the standard operation procedure of oil film bearing lean assem-bly as well as the solution of common problems ,provides a technical support and protection in order to im-prove the running quality , avoid common problems , shorten the time for changing the roller .

针对轴向柱塞马达变量阀配流机构的结构特点，提出圆盘缝隙前置阻尼中心通流式流体静压推力轴承的原理和结构。计算承载能力和油膜刚度，分析轴承密封带与圆盘缝隙前置阻尼平面的高度差对静压推力轴承特性的影响，并与细长孔前置阻尼流体静压推力轴承的承载能力和油膜刚度进行对比。结果表明，圆盘缝隙前置阻尼流体静压推力轴承的油膜绝对刚度较大，是油膜厚度的单调递减函数，油膜厚度越小刚度越大，承载能力稳定，负载适应能力较强；细长孔前置阻尼流体静压推力轴承在设计油膜厚度附近刚度最大，当油膜厚度改变时刚度减小。对高度差5和10μm的2种样机进行对比试验，试验结果表明，2种轴承均可在压力0～12 M Pa ，当转速为0～1000 r／min时正常工作，泄漏和摩擦都很小。当流体压力变化时，高度差为5μm的轴承的泄漏量和摩擦扭矩相对较稳定。

Present the working principle and structure of a hydrostatic thrust bearing with a circular flat slit fed restrictor ,which was designed for variable displacement seat valve distributor of a hydraulic motor . Calculated its bearing capacity and oil film stiffness ,analyzed the influence of the height difference between the bearing surface and its circular flat slit fed restrictor on bearing characteristics ,compared the circular flat slit fed restrictor hydrostatic thrust bearing with capillary fed restrictor bearing .The results show that the oil film stiffness of the hydrostatic thrust bearing presented in this paper decreases monotone with the thickness of the oil film ,and the bearing capacity was more stable than capillary fed restrictor bearing , while the capillary fed restrictor bearing had its best oil film stiffness at its rated working oil film thickness .Hydrostatic thrust bearings with height difference 5 μm and 10 μm were tested ,the test results showed that b