鞍钢齐大山铁矿为适应4m~3电铲采装108t大型电动轮运矿汽车(高度5.064m)的需要,解决采矿设备和运输设备相互配套发挥4m~3电铲的作业效率,对其动臂和斗杆进行了加长改造。该项技术改造本着节约的原则,利用旧悬臀切掉其破损的窄架根、换上新的宽架根;利用两副旧的斗杆,在确保电铲有足够的卸载高度、卸 Anshan Iron and Qidashan Iron Mine to adapt to 4m ~ 3 electric shovel 108t large electric wheel transport car (height of 5.064m) needs to address the mining equipment and transport equipment supporting each other to play 4m ~ 3 shovel operating efficiency, the move Arm and stick for a longer transformation. The technical transformation in line with the principle of conservation, the use of the old hanging under the cut off its broken narrow roots, put a new wide root; the use of two old sticks, to ensure that the shovel has enough unloading height, unloading