Assembly gantry structure capable of being flexibly assembled

The utility model discloses an assembling portal frame structure capable of being flexibly assembled, which comprises a front portal frame and a rear portal frame, tunnel construction equipment is arranged between the front portal frame and the rear portal frame, the front portal frame and the rear portal frame respectively comprise a left supporting part and a right supporting part, and the left supporting part and the right supporting part respectively comprise a plurality of layers of box bodies stacked from bottom to top. And a fixing fastener and a positioning plate group are arranged between the adjacent box bodies. The portal frame structure can be flexibly assembled and is convenient to disassemble and assemble, the fixing fasteners and the positioning plate set are adopted in the structure, the efficiency of assembling and disassembling the portal frame is improved, auxiliary positioning is carried out through the positioning plate set, and the installation difficulty of the portal frame is greatly r