Automatic installing and fastening device for shield tunneling machine duct piece bolt

The utility model belongs to the technical field of shield construction, and particularly relates to an automatic installing and fastening device for shield tunneling machine duct piece bolts. The device comprises a feeding disc, a walking device, a bolt installing device, a bolt fastening mechanism and a PLC control device, the bolt installing device comprises a first mechanical arm installed on the walking device, the first mechanical arm comprises a first sleeve, a first three-gripper is arranged in the first sleeve, a top pipe is arranged in the center of the interior of the first three-gripper, and a second three-gripper is arranged in the top pipe. The nut fastening device comprises a second mechanical arm installed on the walking device, and the second mechanical arm comprises a second sleeve and a second three-gripper arranged in the second sleeve. A manual screwing mode is replaced by a manipulator mounting mode, so that the working efficiency of connecting and fixing the duct pieces is improved, the