In-situ testing research on application effect of double welding gun intelligent welding robot for PHC pipe pile
The connection of PHC pipe piles generally adopts manual welding methods,which have low welding efficiency,high labor intensity,great health hazards,and are prone to problems such as unstable weld quality and insufficient bearing capacity.To solve the above problems,the double welding gun intelligent welding robot for PHC pipe pile was independently developed,by optimizing the welding arc tracking algorithm,and a dedicated multi-layer and multi pass welding process for the robot were developed,achieving high-quality welding of small and medium-sized PHC pipe pile joints.The robot was demonstrated and applied in the third phase resettlement area project of Guangzhou Baiyun Airport,and on-site testing and analysis were conducted on the quality and mechanical properties of PHC pipe pile joints.The results show that the welding seams of PHC pipe piles using the double welding gun intelligent welding robot welding process meet the requirements of the third level welding seam technology,the welding quality is stable,the force transmission performance of the welding joints is good,and the pull-out bearing capacity of the PHC pipe piles fully meets the design requirements.The 500mm diameter PHC pipe pile can be welded using double welding gun intelligent welding robot in just 24 minutes,resulting in a 30％increase in work efficiency compared to a single welding gun welding robot.
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