Large-diameter silo fastener type steel pipe annular cantilever truss platform

The utility model discloses a large-diameter silo fastener type steel pipe annular cantilever truss platform, and relates to a barrel structure construction device. The cantilever truss platform comprises a lifting frame, an inner operation platform, an outer operation platform, an inner enclosing ring, an outer enclosing ring, an inner hanging scaffold and an outer hanging scaffold, wherein the inner operation platform comprises inner cantilever frames, a cross bridging arranged between the inner cantilever frames, and two annular web members; the outer operation platform comprises outer cantilever frames, a support frame between the outer cantilever frames, and an annular web member; the inner enclosing ring respectively props against the upper and lower sides in an inner formwork of a silo wall; the outer enclosing ring respectively props against the upper and lower sides outside an outer formwork of the silo wall; the inner and outer hanging scaffolds are respectively hung on the bottom ends of the inner and outer cantilever frames; the lifting frame comprises two pairs of inner and outer vertical rods, a short steel pipe connected between each pair of inner and outer vertical rods, upper cross beams connected at the upper ends of the inner and outer vertical rods, and lower cross beams respectively connected at the upper middle parts of the inner and outer vertical rods; and the lifting frame is supported on the inner and outer cantilever frames of the inner and outer operation platforms.