论文部分内容阅读
托辊是带式输送机的关键部件，宜性能已成为带式输送机技术研究的焦点之一。由于种种原因，目前托辊的使用寿命和运行阻力系数等指标普遍低于国家标准，托辊过早失效的现象十分普遍。据调查．我国煤矿使用的托辊中，有的使用寿命仅几百小时，远远低于国家标准规定的20000h的使?
Belt roller conveyor is a key component of the appropriate performance has become a belt conveyor technology research focus. Due to various reasons, the current service life of the roller and running resistance coefficient and other indicators generally lower than the national standard, roller premature failure phenomenon is very common. According to the survey. China’s use of roller in the coal, and some service life of only a few hundred hours, far below the national standard of 20000h?