Duct piece hoisting system

The utility model relates to a duct piece hoisting system. The duct piece hoisting system comprises a trailer, on which a walking beam is fixedly arranged; the pipe piece crane is used for hoisting pipe pieces, and the pipe piece crane is hung on the walking beam and walks on the walking beam in the front-back direction of the tunnel; the first driving device is connected with the duct piece crane so as to drive the duct piece crane to walk; the duct piece unloading device is arranged on the trailer and used for supporting duct pieces; the manipulator is located behind the segment crane, is hung on the walking beam and walks on the walking beam in the front-back direction of the tunnel; the second driving device is connected with the manipulator to drive the manipulator to walk; the connecting pin supply device is provided with a plurality of connecting pins so as to supply the connecting pins to the manipulator; and the gripper is arranged on the manipulator and is used for gripping the connecting pin and th