【摘要】 针对两种不同挡肩结构的圆锥滚子轴承，建立了CFD数值仿真模型，开展了充分润滑状态和失油状态下轴承发热量计算以及温度特性研究，探索了不同润滑油质量流量和转速下轴承温度分布规律，并开展了轴承干运转对比验证试验。研究结果表明：充分润滑状态下外挡肩结构轴承各零件温度均低于内挡肩结构轴承，轴承滑油体积分数与温度呈负相关关系，与表面传热系数并不是严格的正比关系，随着转速的提高轴承腔内各零件表面的温度呈上升趋势；失油状态下外挡肩结构轴承腔内温度较内挡肩结构轴承低，外挡肩结构轴承的干运转能力较内挡肩结构轴承强，最高温度出现在大滚子壁面上，随着干运转时间的延长，轴承的失效从大滚子挡肩处开始。更多还原

【Abstract】 The CFD numerical simulation calculation model was established for two different types of tapered roller bearings with different rib structures. The heat generation calculation and temperature characteristics of the bearings under fully lubricated and oil loss states were studied. The temperature distribution law of the bearings under different inlet lubricating oil flow rates and different speeds was explored,and dry operation comparative verification experiments were carried out. The research results showed that the temperature of each part of the outer rib structure bearing was lower than that of the inner rib structure bearing under fully lubricated state; the volume fraction of bearing lubricating oil was negatively correlated with temperature, but not strictly proportional to the convective heat transfer coefficient; as the rotational speed increased,the temperature of each part of the bearing cavity surface showed an upward trend; in the state of oil loss,the temperature inside the bearing chamber of the outer rib structure was lower than that of the inner rib structure bearing. The dry running ability of the outer rib structure bearing was stronger than that of the inner rib structure bearing, and the highest temperature occurred on the wall of the large roller. As the dry running time increased,the failure of the bearing began at the edge of the large roller.更多还原