Main muscle and flange welding position frock of tapering concurrent

The utility model relates to a tapering concurrent production technical field can make flange and steel bones RACK coaxial line among the welding process to guarantee that two screen separation section poles form the long pole of qualified vertically to the carried forward, have simple structure in addition, convenient operation's technical characterstic. Technical scheme: a main muscle and flange welding position frock of tapering concurrent, includes the base plate, by frame, benchmark board, positioning seat, the base plate is arranged along left right direction level, fix the left end at the base plate by the frame, have a vertical end by the right side of frame, the benchmark board be with the flange terminal surface mate circular, the left end face of benchmark board is hugged closely the vertical end who leans on the frame and is arranged, the right -hand member face of benchmark board when welding the flange to the reference surface that leans on, the positioning seat lies in the right side of benchma