大型飞机增升装置关节轴承摩擦特性试验研究

为对民机增升装置关节轴承的摩擦特性进行研究,提出了一款关节轴承摩擦性能测试装置,介绍了试验装置的结构特点和摩擦力矩测量原理。 试验采用了一款与增升装置使用的关节轴承结构形式相近的自润滑关节轴承,通过试验装置测试了自润滑关节轴承的启动摩擦力矩,并对不同转速、摆角和径向载荷下不同型号自润滑关节轴承的摩擦力矩进行测试,分析了这些因素对自润滑关节轴承摩擦性能的影响。 研究结果表明,低速范围内转速对自润滑关节轴承摩擦性能的影响不大, 等效摩擦系数随着载荷增大而减小,随着摆角、轴承尺寸增大而增大。

Experimental study on friction characteristics of spherical plain bearings for large civil aircraft lifting devices

In order to study the friction characteristics of the spherical plain bearings of the civil aircraft high lift devices, a test equipment for friction performance of spherical plain bearings was proposed. The structural characteristics of the test equipment and the measuring principle of friction torque were introduced. A self-lubricating spherical plain bearing with a structure similar to that of the spherical plain bearing used in the high lift device was used in the test. The starting friction torques of self-lubricating spherical plain bearings were tested by this test equipment, and the friction torques of different types of self-lubricating spherical plain bearings under different rotational speeds, swing angles and radial loads were tested. The influence of these factors on the friction performance of the self-lubricating spherical plain bearings was analyzed. The results show that the speed in the low speed range has little effect on the friction performance of self-lubricating spherical plain bearing, and the equivalent friction coefficient decreases with the increase of load, and increases with the increase of swing angle and bearing size.