Welding device for double-sided automatic angle welding of U-shaped stiffening rib

The utility model discloses a welding device for double-sided automatic angle welding of a U-shaped stiffening rib. Comprising a supporting cross beam (1), a welding trolley installed on the supporting cross beam, a positioning guide mechanism installed on the welding trolley, hanging brackets which are installed on the two sides of the supporting cross beam and can reciprocate along the cross beam, welding gun clamping mechanisms (9) installed at the bottom ends of the hanging brackets, and welding guns (10) arranged in the welding gun clamping mechanisms. The U-shaped stiffening rib double-face automatic angle welding device can carry out U-shaped stiffening rib double-face automatic angle welding on a steel structural part, reduces deformation generated by welding, and improves welding efficiency. 用于U形加劲肋的双面自动角焊的焊接装置，包括支撑横梁(1)、安装于支撑横梁上的焊接小车、安装于焊接小车上的定位导向机构、安装于支承横梁两侧的可沿横梁往复移动的吊架、安装于吊架底端的焊枪夹持机构(9)及设置于焊枪夹持机构中的焊枪(10)。本实用新型可在钢结构件上进行U形加劲肋双面自动角焊，减小焊接产生的变形，并提高焊接效率。