目前,我国东北地区大型砖瓦厂多数使用挖掘机进行取土作业;特别是冬春两季,需开挖冻土层进行作业。此时,由于挖掘机处于超负荷作业状态,车身振动过大,挖掘机旋转平台钢板焊缝经常开裂,影响了机械的正常使用。抚顺挖掘机厂生产的W1001_型挖掘机,其旋转平台是用16和20mm厚钢板焊成的框架结 At present, the majority of large-scale brick and mortar plants in Northeast China use excavators for earth-borrowing operations; especially in winter and spring, they need to excavate the frozen soil layer for their operations. At this point, due to the excavator in the overload state, body vibration is too large, excavator rotary plate weld often cracking, affecting the normal use of machinery. W1001_ excavator produced by Fushun Excavator Factory whose rotary platform is a frame knot welded with 16 and 20mm thick steel plates