Installation and construction method of internal climbing type tower crane

The invention provides an installation and construction method of an internal climbing type tower crane, and relates to the technical field of building construction.The internal climbing type tower crane comprises an internal climbing tower crane, a supporting beam and a jacking device, a climbing frame is arranged outside the internal climbing tower crane, the bottom of the climbing frame is arranged on the supporting beam, and one end of the supporting beam is connected with an outer wall of a building; the mounting method comprises the following steps: S1, calculating the maximum load of the support beam according to geometric and mechanical characteristics of the internal climbing tower crane; s2, selecting a nearby built building outer wall as a connecting point of the supporting beam; s3, pre-embedded bolts connected with the supporting beams are pre-embedded, and the supporting beams are fixedly connected with the outer wall of the built building through the pre-embedded bolts; s4, the inner climbing f