Cantilever steel beam structure of top steel platform of building machine

The utility model discloses a cantilever steel beam structure of a steel platform at the top of a building machine, and belongs to the technical field of building machines for buildings. The overhanging steel beam comprises an overhanging steel beam body, the overhanging steel beam body is an I-shaped structural part, the inner side end face of the overhanging steel beam body is fixedly connected with a standard steel beam of a top platform of the aerial building machine, the outer side of the overhanging steel beam body obliquely extends upwards during connection, and the included angle between the bottom of the outer end face of the overhanging steel beam body and the bottom of the inner end face of the overhanging steel beam body is 0.6-2.2 degrees. The cantilever beam is simple in structural design and convenient to machine, the problem that the cantilever beam is insufficient in load deflection is solved under the condition that the section of the cantilever beam is not enlarged, the normal use state of