密封性能差的托辊,轴承很容易被污染使托辊出现“早期失效”。托辊与胶带之间就会由理想的滚动摩擦转变为非正常的半滚动半滑动摩擦,随着托辊污染程度的增加,滚动逐渐变差,直至卡死彻底失效。为了保证上述工况下带式输送机的正常运行,除了计 Poor sealing performance of the roller, the bearing can easily be contaminated so that the roller appears “early failure ”. Between the idler roller and the tape, the ideal rolling friction will transform into the abnormal semi-rolling and semi-sliding friction. As the degree of contamination of the idler roller increases, the rolling gradually deteriorates until the jamming completely fails. In order to ensure the normal operation of the belt conveyor under the above conditions, in addition to dollars