Overhanging type large-span photovoltaic power generation system convenient to assemble

The invention discloses an overhanging type large-span photovoltaic power generation system convenient to assemble, which comprises an adjusting tank and an overhanging type steel structure, an assembling steel frame is fixed at the top end of the adjusting tank through bolts, the assembling steel frame stretches across the adjusting tank, an embedded steel plate is fixedly connected onto the assembling steel frame, the overhanging type steel structure comprises a supporting frame, and the supporting frame is fixedly connected with the overhanging type steel structure through bolts. A plurality of assembled steel column components are clamped to the inner wall of the bottom end of the supporting frame, a plurality of steel columns are clamped to the inner wall of the bottom end of the assembled steel component at the tail end, the steel columns are fixed to the top end of an embedded steel plate, the steel columns and the embedded steel plate are integrally formed, and an external steel base is connected to t