多年来,兖州矿业(集团)公司兴隆庄煤矿注重保养维护主井提升机直流主电机,使其经常保持良好的运行状态,经实践证明相当有效,值得推广应用。解决直流他激式电动机的划弧(也叫火花短路或电机放炮)现象是一个很难杜绝的世界性难题,该矿由原来发生3～6次/a降低到不足1次/a。除了每天清扫和定期检查检修、及时更换炭刷等日常维护外,还采取如下措施:①避 Over the years, the Xinglongzhuang Coal Mine of Yanzhou Mining (Group) Company has paid great attention to maintaining and maintaining the main DC motor of the main shaft hoist so as to keep it in good running condition constantly. It is proved to be quite effective in practice and is worth popularizing and applying. Solving the problem of DC arc-striking (also called spark short-circuiting or motor blasting) of his DC motor is a difficult global problem that has been reduced from 3 to 6 times / a to less than 1 / a. In addition to daily cleaning and regular inspection and maintenance, timely replacement of carbon brush and other routine maintenance, but also take the following measures: ① avoid