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工程机械的焊接结构件中,常用到燕尾焊缝,以降低焊缝处的应力集中,提高结构件的抗疲劳特性;鉴于目前对燕尾焊缝的分析计算研究较少,以某型混凝土泵车支腿摆动液压缸支座处燕尾焊缝为研究对象,基于Workbench精确建模量化分析燕尾焊缝长度、宽度等外形尺寸及耳板斜边与焊缝斜边夹角对其应力水平的影响,并结合焊接工艺给出燕尾焊缝外形尺寸的合理取值范围,为设计提供理论参考。
In the welding structure of construction machinery, the dovetail weld is often used to reduce the stress concentration at the weld and improve the fatigue resistance of the structural parts. In view of the limited research on the analysis of the dovetail weld at present, a certain type of concrete pump truck Based on the workbench precise modeling, the effects of the dimensions of the dovetail weld, such as the length and width of the dovetail, and the included angle between the hypotenuse and the hypotenuse of the weld, on the stress level of the dovetail weld, The reasonable range of dovetail weld dimensions is given in combination with the welding process, providing a theoretical reference for the design.