Wedge impact blade of impact cutting coal machine was designed and its working process was stimulated.
本文通过对冲击采煤机冲击刀具的设计及其参数的研究，设计了较为合理的楔形冲击刀具。
The paper introduces the main functional design of a kind of small cutting coal machine with hydraulic fork lift as feed power and chain-saw cutting knives driven by generator as working head.
论述了一种利用液力叉车作为进给动力，由电机驱动链锯式割刀作为工作头的小型立式割煤机的主要性能设计。
They work with remote control devices that change the direction, position and speed of a German-made cutting machine that slices back and forth along a 300-metre-wide coal face.
他们操作的遥控装置可以改变截煤机的方向、位置和速度，这台德国产的截煤机可以沿着一道300米宽的煤面来回进行切割。
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