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我矿选厂φ2700×3600球磨机,包括钢球总重量共120吨左右,而厂房设计只配置一台30/5吨桥式吊车,检修时根本吊不起来。以往检修轴瓦和更换大齿轮时,首先要将球磨机筒体内的矿砂和钢球全部倒出来,然后在球磨筒体下摆放一个大架子,在架子上垫上多层枕木(一次得用60～80根),在枕木上安装四台100吨的油压千斤顶,在筒体下面四个人同时用力摇动千斤顶,慢慢地将球磨顶起,顶到一定高度,又要增添枕木,搬动千斤顶。整个起重过程麻烦,劳动强度大,操作不方便,工作效率低,顶起一台球磨需要费时间三天左右。
I mine mills φ2700 × 3600 ball mill, including the total weight of the ball a total of about 120 tons, while the plant design is configured with only a 30/5 ton bridge crane, repair can not hang up. In the past, when repairing the bearing bush and replacing the gear wheel, all the ore and steel balls in the ball mill barrel should be poured out first, and then a big rack should be placed under the ball mill barrel with multiple layers of sleepers on the rack Root), install four 100 tons of hydraulic jacks on the sleepers, the four individuals below the cylinder at the same time force the jacks, shake the ball slowly, top to a certain height, but also increase the sleepers, moving the jack. The whole process of lifting trouble, labor-intensive, inconvenient to operate, low efficiency, jacking up a ball mill takes time about three days.