Automatic flaw detector for sucker rod well head on line

The utility model relates to an automatic flaw detector for sucker rod well head on line apparatus and is composed of a main body, a flaw detection servo system and a base board. The utility model is characterized in that the flaw detection servo system is composed of an upper board, a universal joint link mechanism, a movable disk, a roller mechanism and a probe assembling mechanism. The utility model has the advantage that a vortex nondestructive flaw detection technology can be directly applied to the automatic flaw detection for the well head of a sucker rod on line. When a sucker rod is arranged again in an ordinary workover treatment, the utility model is used for carrying out the flaw detection. Power and a power plant do not need to be arranged. Little working auxiliary time is increased. Manpower and material resources can be economized. The economical benefit is obvious.