Thick plate drift quick change structure

The utility model discloses a thick plate drift quick change structure, including drift, fixed cover, pad post, upper fixing plate and backing plate, fixed cover is both ends open -ended cylindrical structures, and be provided with the drift chamber in it and fill up pillar cavity, towards head position in the drift intracavity, and the front end of drift extends to the outside of fixed cover, fill up the post and be located pad pillar cavity, just fill up the front end of post and laminate mutually with the rear end of drift, the rear end of filling up the post extends to fixed cover outside,the rear end of drift is provided with the boss, it can be right to be provided with between drift chamber and the pad pillar cavity the spacing gentle slope of boss, upper fixing plate is connectedwith the backing plate, fixed cover and upper fixing plate threaded connection, fill up the rear end and backing plate looks butt of post, the utility model discloses rational in infrastructure, design benefit, easy operation,