Holding apparatus for internal water pore

The utility model discloses an inner water-gap compressing apparatus which comprises a cam force application mechanism and a compressing head which is pressed by the can force application mechanism, wherein the contact surface between the compressing head and the cam force application mechanism is an alterable inclined surface. On the alterable inclined surface, in the process of the pressing between the cam force application mechanism and the compressing head, the contact is a line contact with a constant length. The alterable inclined surface comprises a skid shoe and a skid shoe flute. Using the technical proposal which is provided by the utility model, the alterable inclined surface device is added with the compressing head, namely the skid shoe and the skid shoe flute structure with a flat surface, thereby the technical problems of unstable working of the compressing head and short service life of the cam force application mechanism can be solved effectively. The technical proposal provided by the utilit