Rapid self-mounting tower crane

The utility model discloses a rapid self-mounting tower crane which comprises a metal structure, a driving structure, a safety protection device, a hydraulic jacking system and an electric control system, wherein the metal structure comprises a bottom rack, a tower body, a pulling trailer, a turntable, a tower cap, a lifting arm and a balancing arm; the bottom rack is fixed at the bottom of the tower body; one side of the tower body is hinged to the end of the pulling trailer; the bottom rack is contacted with the ground when the tower body is lifted; the bottom rack is transversely arranged on the pulling trailer after the tower body is put down; the turntable is fixed on the top of the tower body; the tower cap is fixed above the turntable; the lifting arm and the balancing arm are respectively hinged to two sides of the turntable; the lifting arm is connected with the tower cap through a front pull rod; the balancing arm is connected with the tower cap through a rear pull rod. The rapid self-mounting tower