Phased array detection device for bolts

The invention discloses a bolt phased array detection device, and belongs to the technical field of bolt detection. The device comprises a bolt comparison module, a clamping assembly, a rotating assembly and a phased array detection assembly, wherein the bolt comparison module is used for clamping a to-be-detected bolt; the clamping assembly comprises a rotatable ferrule and a connecting unit, the ferrule is arranged on the bolt comparison module in a sleeving mode, and the bolt comparison module is detachably connected with the ferrule through the connecting unit; the rotating assembly comprises an inner gear ring and a planetary gear transmission unit, the inner gear ring and the ferrule are fixedly connected and coaxially arranged, and the planetary gear transmission unit is in meshed connection with the inner gear ring so as to drive the ferrule to rotate relative to the planetary gear transmission unit; therefore, internal defects of the bolt can be detected. The angle between the bolt and the phased arr