Hanging cage for welding double-wall steel cofferdam

The hanging cage for welding the double-wall steel cofferdam comprises a plurality of hanging cage sections which are detachably connected in sequence, each hanging cage section comprises a top section, a bottom section and at least one standard section connected between the top section and the bottom section, each hanging cage section comprises four vertical rods arranged in the length direction, and each vertical rod is connected with the corresponding bottom section. The four vertical rods form a rectangular structure in a surrounding mode, and the vertical rods of the adjacent hanging cage sections are connected through connecting sleeves. According to the embodiment, the hanging cage structure with the adjustable height is formed by arranging the multiple detachable hanging cage sections, so that the hanging cage structure has a modularized structure, is simple in design and clear in stress, is adjusted according to different cofferdam heights, is suitable for welding cofferdams with different heights, c