Full-automatic assembling and welding system for hydraulic support connecting rod

The utility model provides a hydraulic support connecting rod full-automatic assembling and welding system which comprises an upper-cover-free rod body tailor-welding system, a channel type preheating furnace, an upper cover plate tailor-welding system and a robot welding unit. The upper-cover-free rod body tailor-welding system is used for splicing a main rib plate, a flitch plate, a lower cover plate and a rib plate and performing tack welding to form an upper-cover-free rod body and conveying the upper-cover-free rod body to the input end of the channel type preheating furnace, and the output end of the channel type preheating furnace is in butt joint with the upper cover plate tailor-welding system; the upper cover plate tailor-welding system is used for welding a welding seam inside the rod body without the upper cover, an upper cover plate and the rod body without the upper cover are spliced and subjected to tack welding to form a connecting rod workpiece, the output end of the upper cover plate tailor-