一种新型教学用滑动轴承实验台的开发与应用

Development and application of a new type experiment platform of sliding bearings for teaching purpose

介绍了研制的新型教学用滑动轴承实验台。实验台具有如下特点:轴瓦置于轴下,贴近滑动轴承工程应用,颠覆了传统教学用滑动轴承实验台的结构;轴拆卸方便,易于观察轴瓦的结构;机械式加载,更直观;采用浮动联轴节,保证轴与轴瓦的同心度;载荷加在滚动轴承上,避免加载点在轴上的串动;通过测量电动机输出电流、电动机输出电压、轴的转速,可计算出滑动轴承摩擦因数;克服了传统滑动轴承实验台机械测试方法的缺陷。

A newly developed experiment platform of sliding bearings is presented. Its bearing bush is lowering located,which is different from traditional teaching platform of the sliding bearings and gives a better demonstration close to engineering application of the sliding bearings. Shaft of our platform can be easily removed and the bearing bush can be conveniently observed. Concentricity between the shaft and the bearing bush is guaranteed through a floating coupling. By a loading mechanism, radial load is exerted at a rolling bearing on the shaft, so the shifting of the loading point can be avoided. By measuring current and voltage of the motor’s armature winding and rotating speed of the shaft, the friction coefficient of the sliding bearings can be calculated precisely, which overcomes the disadvantage of the mechanical measuring method of the traditional bearing experiment platform.