Buckle structure capable of being quickly disassembled and assembled and machine tool shell

The buckle structure is used for detachably connecting a fixed piece and a movable piece, the movable piece is provided with a connecting part, the connecting part extends out of the fixed piece and is provided with a connecting hole, the buckle structure is characterized by comprising a fixed column and a locking piece, one end of the fixed column penetrates through the connecting hole and is inserted into the fixed piece to be fixedly connected with the fixed piece, and the other end of the fixed column is fixedly connected with the locking piece. Annular grooves are formed in the other ends of the fixing columns; the locking piece is provided with an inserting part and an elastic part, the inserting part is provided with a clamping groove for being inserted into the annular groove so that the connecting part can be limited between the fixing piece and the inserting part, one end of the elastic part is connected with the top end of the inserting part, and the other end of the elastic part is bent towards th