LINEAR WELDING DEVICE OF A LOWER SIDE FLAME IN POWER SHOVEL

摘要

The apparatus for automatically welding a lower side frame having a plurality of the reinforced plates with the base plate, comprises the welding-wire tracking guide rollers (52)(53) having a plurality of power mollers (22)(23) for loading / unloading welding torches (25)(26) running forward or backward along the rollers (52)(53); a feeding section on the device (27), for supplying the welding wire (61) to the torches (25)(26); subsidiary rollers (33)(34) for helding the power moller, lifting when the welding material is input/output. The apparatus simultaneously welds the left/right sides after the welding material input to the power moller is fixed according to the already-input program.