Supporting steel plate structure with folding and unfolding functions

The utility model belongs to the field of constructional engineering, and particularly relates to a supporting steel plate structure with a folding and unfolding function, which comprises a cushion block, a base arranged at the upper end of the cushion block and a bracket mechanism arranged on the base, side supporting rods are symmetrically distributed at the upper end of the base and positioned on the side of the central supporting rod; the adjusting mechanism is used for adjusting the distance between the two side supporting rods and the height of the side supporting rods; the adjusting mechanism comprises a transverse bidirectional linear adjusting mechanism, a height adjusting assembly and an adjusting transmission assembly with the telescopic length. The transverse two-way linear adjusting mechanism is horizontally and rotationally installed on the base, the adjusting end of the transverse two-way linear adjusting mechanism is provided with a height adjusting assembly, and the steel reinforcement cage l