在批林批孔运动的推动下,在云南省冶金局和厂党委的领导下,我们怀着对矿山工人的深厚无产阶级感情,于1974年7月,接受了试制混凝土喷射机械手的任务。起初我们了解到有的单位研制的大型液压机械手,适应不了中小型有色矿山的小断面巷道。10 Driven by the pro-Lin Pok campaign, under the leadership of the Yunnan Provincial Metallurgical Bureau and the Party Committee of the Factory, in July 1974, with the deep proletarian feelings toward the mine workers, we accepted the task of trial production of concrete spraying robots. At first, we learned that some large-scale hydraulic manipulators developed by some units can not meet the small cross-section roadway of small and medium-sized non-ferrous mines. 10