Regeneration machine with replaceable tool bit for asphalt pavement construction

The utility model relates to the technical field of pavement construction devices, in particular to a regeneration machine with a replaceable cutter head for asphalt pavement construction, which is characterized in that a cutter sleeve is coaxially provided with a stepped inner cavity, a cutter handle is coaxially and movably sleeved in the inner cavity, the outer edge of the cutter handle is in a stepped shape matched with the inner cavity, and the cutter head is arranged in the inner cavity. The lower end of the cutter handle is coaxially and fixedly connected with a conical wear-resisting part, the lower end of the wear-resisting part is coaxially and fixedly connected with an octagonal base, the lower end of the octagonal base is coaxially and fixedly connected with a cutter point, the upper end of the cutter handle is coaxially provided with a positioning hole, and the inner bottom surface of the inner cavity is coaxially and fixedly connected with a positioning column which is in differential insertion