斗轮式挖掘机工作机构的结构,能保证有可能采用两种■制形式-水平的(图1a)和垂直的(图1б)—开采工作面。实际上,常常偏重于垂直■制法,但在技术文献中还没有采用这种方法工作合理性的理论基础。试验研究资料表明 The structure of the bucket wheel excavator’s working mechanism ensures that it is possible to adopt two kinds of forms: horizontal (Fig. 1a) and vertical (Fig. 1b) - mining face. In fact, the vertical method is often emphasized, but the theoretical basis for the rationality of this method has not been adopted in the technical literature. Experimental research data show