Large-span steel-concrete composite beam cast-in-place sideboard suspension type hanging formwork device

The utility model relates to the technical field of bridge construction, in particular to a large-span steel-concrete composite beam cast-in-place sideboard suspension type formwork hanging device which comprises a plurality of lower cross beams arranged side by side at equal intervals. A plurality of formwork supporting beams perpendicular to the lower cross beams are fixed to the lower cross beams at equal intervals. The template is placed on the template supporting beam; the formwork supporting beams are provided with formwork hanging supports. The suspended formwork support comprises a rectangular frame. Supporting legs are fixedly connected to the bottom of the rectangular frame. Upper cross beams which are arranged at equal intervals are arranged on the hanging formwork support, the upper cross beams and the lower cross beams are parallel in a one-to-one correspondence mode, and each upper cross beam is arranged over the corresponding lower cross beam; the upper cross beams are detachably connected with