Inner lock head fixing ring

The utility model discloses an inner lock head fixing ring which comprises a ring main body, two ends of which are connected by arranging a fastening bolt; the clamping pads are clamped in an inner groove preset in the inner wall of the ring main body, one end of each clamping pad is connected with the ring main body through a rotating shaft, the other end of each clamping pad is connected with a positioning piece, and the positioning pieces can be clamped in positioning grooves preset in the surface of the ring main body; according to the technical key points, a plurality of clamping pads are designed on the inner wall of the ring main body, and the clamping area of the ring main body can be changed by rotating the clamping pads, so that different lock heads are fixed, and the inner lock head is protected and buffered; the positioning pieces are used and combined with the positioning grooves, the positions of the positioning pieces in the positioning grooves are changed, the positions of the clamping pads ca