每当挖掘机在激烈工作的时候,我们总担心旋转立轴的断裂。这是因为立轴是旋转减速箱中主要的易损件。我矿十台WK—4挖掘机,平均年耗立轴15根左右,1975年高达23根。由于消耗量大,常常造成立轴备件供不应求,加上检修困难,时间较长,直接影响了矿山生产,为降低碎修率,减少备件消耗资金,保证生产时间,我们对立轴的断口进行了宏观 Whenever the excavator in the intense work, we are always worried about the vertical axis of the fracture. This is because the vertical shaft is the main wearing part of the rotary gearbox. I mine ten WK-4 excavators, the average annual consumption of about 15 vertical axis, up to 23 in 1975. Due to large consumption, often caused by vertical shaft spare parts in short supply, coupled with maintenance difficulties, a long time, a direct impact on the mine production, in order to reduce debris repair rate, reducing spare parts consumption of funds, to ensure production time, we fracture the vertical axis macro