X-ray tube butt joint device

The utility model discloses an X-ray tube butt-joint device which comprises an X-ray tube body and a butt-joint tube, a guide groove allowing the X-ray tube body to be inserted is formed in the side, where the butt-joint tube is located, of the X-ray tube body, and a first butt-joint ring and a second butt-joint ring are arranged on the outer surface of the X-ray tube body and the outer surface of the butt-joint tube respectively. A movable ring is rotationally connected to the exterior of the first butt joint ring, an annular ring is rotationally connected to the exterior of the second butt joint ring, an opening is formed in the outer surface of the annular ring, a connecting rod is rotationally connected between the inner walls of the two sides of the opening, a clamping opening is formed in the movable ring, and the connecting rod can rotate to the axis direction of the butt joint pipe and is clamped in the clamping opening. The technical problems that when an existing base is in butt joint with an emitti