超大型挖掘机动臂焊接变位机设计与应用

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Design and application of a welding positioner for the boom of ultra-large excavators

LIUQifeng，ZHANG Yongwei，WANG Junwei，WANG Quanhua，QI Binbin StrongConstructionMachinery Co.，Ltd.，Linyi276ooo，Shandong，China

Abstract：Aimedatthe key task of manufacturing super-large excavators for domestic OEMs，welding positioners playa crucialrole in the fabrication of structuralcomponents for such equipment.Taking the welding positioner for the boom of a super-large excavator as the research subject，this study conducts an in-depth analysis of the boom's structural characteristics， process requirements， and key technical parameters， based on which innovative design concepts for the welding positioner are derived.Through precise structural design，al-position optimal posture welding for both the front and rear ends of the super-large excavator boom has been successfully achieved. Practice hasdemonstratedthat this welding positioner not onlydelivers significant welding results with high depositionrates， but also features a compact footprint，effectively enhancing production efficiency.It provides valuable reference for the design of process equipment for super-large excavators and holds important significance for promoting the independent development of high-end engineering machinery.

Keywords： ultra-large excavator; boom; welding positioner; oscillating platform; rolling ring mechanism

1 序言

近年来，随着全球基础设施建设需求的持续增长和工程机械行业技术迭代的加速，中国挖掘机制造业在技术创新与市场拓展方面取得了显著成效。（剩余4794字）