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我工段粗碎作业的铁板给矿机,原用变速电机调速来变更矿量。由于调速或开停车频繁,变速电机的整流片磨损较快,炭刷使用期限很短,甚至出现一个班要更换10多块炭刷的情况,增加了生产成本和维修工作量。我们在有关部门的帮助下,改用直流发电机代替变速电机进行调速,
I work coarse crushing operations to the mining machine, the original variable speed motor to change the mine speed. Due to frequent speeding or open parking, variable speed motor commutator wear faster, carbon brush life is very short, or even a class to replace more than 10 pieces of carbon brushes, an increase of production costs and maintenance workload. With the help of the relevant departments, we use DC generators instead of variable speed motors for speed control.