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攀钢(集团)矿业公司铁矿的主要采掘设备WK-4电铲的转台是电铲旋转运动的基础件,中央托架孔是转台安装中央枢轴的基孔.在长期使用过程中,转台中央托架孔壁由于受旋转离心力的挤压摩擦而磨损.依据电铲检修技术规程,中央托架孔磨损量达1mm时,需更换新转台.一台转台价值18万元之多,轻易更换实在可惜.为此,我矿开展技术攻关,摸索出采用气割扩孔、镶嵌钢套修复电铲转台中央托架孔的方法,取得了良好效果.工艺方法介绍如下.
Main Mining Equipment of Pangang (Group) Mining Company Iron Ore Mine The rotary table of the WK-4 shovel is the basis for the rotary motion of the shovel, and the center bracket hole is the base hole for installing the central pivot of the turret. In the long-term use, Central bracket wall due to the centrifugal force squeezed friction and wear.According to electric shovel maintenance technical regulations, the central bracket hole wear 1mm, the need to replace the new turntable.A turntable worth as much as 180,000, easily replaced It is a pity .Therefore, mine mine to carry out technical research to explore the use of gas reaming, inlaid steel sleeve repair shovel turntable center bracket hole method and achieved good results. Process described below.