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中小型滚筒式采煤机一般沿运输机中部槽帮和导向管移动。由于采煤机在工作时产生一个向采空区侧的推力,特别当中部槽不平或工作面仰采时,向采空区的推力将更大,最终影响刮板链的通过。另外采煤机和刮板机工作时振动较大,连接导向管的校形螺栓易松动,进而发生切断螺栓的事故。一旦出现这些现象,导向管与槽帮间缝隙将加大,导致发生平面滑靴掉道事故。
Small and medium-sized drum shearer generally along the middle of the conveyor slot and guide tube to help move. As shearer working produce a thrust to the gob side, especially when the central groove uneven or working face Yang mining, thrust to the goaf will be greater, and ultimately affect the scraper chain. In addition shearer and scraper vibration during work, connecting the guide tube of the school-shaped bolts easy to loosen, and then the accident occurred to cut off the bolt. In the event of these phenomena, the gap between the guide tube and groove will increase, resulting in a flat slipper off the road accident.