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W100_2~1挖掘机回转中心轴是底座对转台起定心作用的主要零件。轴下端安装在底座上,螺栓紧固并加焊,以提高轴根部的强度。轴上端φ250处与转台中心轴套为动配合。行走装置的动力通过中心轴内孔壁上的行走竖轴输入。本文拟根据我们在修理实践中所发现的中心立轴断裂实例,进行粗略分析,以便采取预防措施。一、断裂部位我矿曾先后大修三台W100_2~1挖掘机,发现回转中心轴根部的铸造圆角处出现不同程度
The rotary center axis of the excavator W100_2~1 is the main part that the base plays a role in centering the turntable. The lower end of the shaft is mounted on the base and the bolts are tightened and welded to increase the strength of the shaft. The φ250 at the upper end of the shaft is in dynamic cooperation with the center sleeve of the turntable. The power of the walking device is input through the vertical axis of travel on the wall of the central shaft. This article intends to conduct a rough analysis based on examples of central vertical fractures that we have found in our repair practice in order to take preventive measures. First, the fracture site Our mine has overhauled three W100_2~1 excavators, found that the rotary center shaft roots at the casting fillet appear different degrees