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中文摘要：
为研究工程机械臂架脂润滑滑动轴承在长期交变径向重载作用下的摩擦性能，研制了一种可以测量这类轴承摩擦力矩和摩擦系数的轴承试验台．该试验台不仅能够模拟轴承在低速重载工况下的工作过程。还能实现轴承与销轴之间的两种相对运动形式．对臂架滑动轴承工作过程中承受的主动力矩与和销轴摩擦力矩之间的关系进行试验研究，提出一种摩擦力矩和摩擦系数的试验求法，并应用于轴承磨损试验时摩擦系数的测量．试验结果表明：利用该方法可准确获得轴承与销轴之间的摩擦系数，并可利用其摩擦系数的发展趋势监测轴承当前的润滑与磨损状况，为轴承安全、可靠运行提供保障，并为设计者预估轴承寿命以及优化设计提供参考．
英文摘要：
To research the friction performance of grease lubricated sliding bearing of the boom in engineering machinery under long-time action of cyclic radial heavy load, a friction torque and coefficient test bench for this kind of bearing has been developed. The test bench can not only simulate the working process of the bearing under the condition of low speed and heavy load approximately, but realize two relative movement forms between bearing and pin shaft. Based on the bench, experiments about the relationship between active torque and friction torque on the sliding bearings in the working process are carried out, and a test calculation method of the friction torque and coefficient is introduced. The wear test shows that the method can be used to accurately obtain the friction coefficient between the bearing and pin shaft. The method provides references for designers to estimate the bearing life and work efficiency, as well as for the optimal design of this type of bearing.
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