作　　者： (周鲜平）;

机构地区： 中联重科股份有限公司,长沙410082

出　　处： 《精密成形工程》 2017年第5期203-207,共5页

摘　　要： 目的分析影响吊臂筒体焊接变形的因素及影响规律,从而找到吊臂筒体焊接变形的控制方法。方法通过理论分析、数值计算、试验研究等手段,探讨吊臂经过摆搭、打底焊、焊接3道工序后,发生焊接变形的原因,得出焊接变形的控制方法。结果轮式起重机吊臂的焊接,通过优化焊接工艺参数、焊接顺序及刚性固定,可以有效控制吊臂焊接变形。结论对轮式起重机吊臂筒体摆搭、打底焊、盖面焊引起的焊接变形进行实物测量分析和有限元分析,然后根据分析结果得出,控制焊接变形的措施是有效的。 The paper aims to analyze the factors and rules affecting the welding deformation of the boom barrel to find out the control method for the welding deformation of the boom. Through theoretical analysis, numerical calculation, experimental research, etc., the reasons for welding deformation of the boom from swing, backing welding and welding were discussed, and the control method of welding deformation was obtained. The welding deformation of the boom of wheeled crane could be effectively controlled by optimizing welding process parameters, welding sequence and rigid fixation. Physical measurement and finite element analysis on welding deformation of the cylinder boom of wheeled crane in backing welding and cover welding and analysis on this basis show that the measures for controlling welding deformation are effective.

关 键 词： 轮式起重机 吊臂 焊接变形 分析 控制