sleeve bearings幻灯片.ppt

第八章 Sleeve bearings 滑动轴承 §8－1 General considerations 概述 §8－2 Materials of sleeve bearings (materials of bearing shells and inserts) 滑动轴承材料（轴瓦及轴承衬材料） §8－3 Simplified calculations for bearings operating with non-fluid friction 非液体摩擦轴承设计计算 §8－4 Load-carrying mechanics of the hydrodynamic lubrication bearings 液体动压润滑轴承承载机理 §8－1 general considerations 概述 1） Non-fluid friction bearings非液体摩擦轴承： 2） Fluid friction bearings： 液体摩擦轴承 Loads are beard completely by oil film 载荷全由油膜承担 II With respect to load-carrying direction 按承载方向分： 1） Thrust bearings 推力轴承：FA 2） Radial bearings 向心轴承：Fr Radial bearings 向心轴承：Fr 3、 Applications 应用 ①Shafts running at exceptionally high speeds or requiring high-precision guidance or carrying heavy load （fluid friction bearings） 高速、重载、精密（液体摩擦滑动轴承） ②Shafts running at low speed noncritical mechanisms （ non-fluid friction bearings ） 低速、轻载、精度要求低时（非液体摩擦滑动轴承） ③Special occasion：for example, split shell is required or operating in aggressive media. 特殊场合:如必须剖分或者宇航、探海等 三、 Contents of the chapter 本章内容 ① Selection of the bearing materials 轴承材料选择 ② Design of non-fluid friction bearings 非液体摩擦滑动轴承设计计算 ③ Load-carrying mechanics of the hydrodynamic lubrication bearings 液体摩擦轴承承载原理 §8－2 Materials of sleeve bearings （ materials of bearing shells and inserts ）  滑动轴承材料（轴瓦及轴承衬材料） Bearing insert: thin layer which is adhered on bearing shell by casting or pressuring in. 轴承衬：有的轴瓦是在轴瓦整体上用浇铸或压合的方法粘附上一层另一种材料，这一薄层材料称为轴承衬。 ② High wear resistance, good corrosion resistance and anti-seizing 耐磨、耐蚀和抗胶合性好 ③Enough mechanical strength （ anti-impact, anti-press and anti-fatigue）（prevent from press and fatigue failures ） 足够机械强度（冲击、抗压、疲劳） （避免压溃和疲劳破坏） 2、 Bronzes 轴承青铜 Tin bronzes 锡磷青铜：ZCuSn10P1 L