The utility model provides a large-size segment conveying crane. The crane comprises a crane body, wherein a motor, an energy accumulator and a hydraulic brake mechanism are arranged on the crane body; the motor is connected with the energy accumulator; the energy accumulator and the hydraulic brake mechanism are connected with a hydraulic pipeline; the hydraulic brake mechanism is arranged on the crane body through a fixing device. The large-size segment conveying crane has the advantages that hydraulic brake and the energy accumulator are matched in use, and emergency brake control of the segment conveying crane can be realized, small-range slipping of the segment conveying crane on a slope with large gradient can be avoided, the efficiency of segment conveying can be improved, the construction progress can be guaranteed, and the running safety of the segment conveying crane can be strengthened.