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在长壁工作面开采系统中,使用新型刨煤机替代滚筒式采煤机能够实现工作面推进时自动架设顶板支护。这种刨煤机已在美国西弗吉尼亚南部的一个煤矿投入使用。由韦斯特伐利矿业发展公司设计的自动刨煤机系统与滚筒式采煤机系统有以下几方面的不同之处。速度快。刨煤机的往返运行速度高速为91m/min,低速为46m/min。刨煤机在输送机留槽上的位置是由机头机尾驱动装置上的脉冲发生器和沿输送机溜槽均匀分布的四个同步开关来确定。同步开关对刨煤机链条的拉伸进行补偿。主控计算机将根据这些数据来确定刨煤机在输送机溜槽上的位置。
In the longwall face mining system, the use of a new plow instead of a drum shearer can automatically set up roof support when the working face is advanced. This plow has been put into operation at a coal mine in southern West Virginia. The automatic plow system designed by Westfalia Mining Development Company differs from the drum shearer system in the following ways. high speed. Plow round trip speed of 91m / min, low speed of 46m / min. The location of the plow on the groove of the conveyor is determined by the pulser on the nose-tail drive and four synchronizing switches evenly distributed along the conveyor chute. Synchronous switch to plow chain tension compensation. Based on these data, the master computer will determine the position of the plow on the conveyor chute.