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本文结合1款液压挖掘机斗杆产生冰花裂纹故障,从设计、制造等方面分析了故障产生的原因,提出了相应的解决方案,并对解决方案进行了实验和使用跟踪,证明了改进方案的有效性。1.故障现象我们对2台某型号挖掘机试验机做工业性试验,当试验至800h时,2台挖掘机斗杆侧板均在同样位置出现冰花裂纹,裂纹在图1中箭头所指位置。挖掘机试验地点为我国西南部地
In this paper, an ice crack occurred in the stick of a hydraulic excavator, the reasons for the failure were analyzed from the aspects of design and manufacture, the corresponding solutions were put forward, and the solutions were tested and used. It was proved that the improved scheme Effectiveness. 1. Symptom We conducted an industrial test on 2 sets of excavator testing machine. When the test reaches 800h, both sides of the excavator arm have ice crack in the same position. The crack is in the position indicated by the arrow in Figure 1 . Excavator test site for the southwest of China