English：

Reinforcement mesh is one of the key components in reinforcement engineering. By analyzing the problems with existing welding equipment during the production of reinforcement cages for diaphragm walls and comprehensively considering the impact of welding methods, weld spot positioning, and mesh configurations on welding processes and quality, this paper proposed the use of gasshielded arc welding as the welding method and determined the actual weld spot positions based on the reinforcement bars at the welding location. A new gantrytype welding robot was developed, enabling the universal welding of different types of mesh. Field applications have demonstrated that the new gantrytype welding robot not only offers high positioning accuracy and excellent weld quality but also enables mechanized and automated production during the welding process, yielding significant social and economic benefits.