摘要：郑煤集团公司王庄矿“四五”采区集运巷安装一部SDJ-150型带式输送机，投入运行的3a时向里：累计运输原煤100余万t，其驱动装置中的传动滚筒和配套的齿轮联轴节连续出现不明原因不同程度的损坏，严重影响了矿井的生产计划。
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