Method for sealing liquid composite spring

A method for sealing a liquid composite spring, comprising steps of:

• placing a sleeve-shaped outer wall around an upper portion of a core shaft, and forming an upper liquid chamber and a lower liquid chamber inside the outer wall;
• and
• arranging a sealing member at a bottom of the outer wall to seal the lower liquid chamber,
• wherein the sealing member is made of flexible material,
• wherein the sealing member has a main body of an annular structure, and an outer edge which is provided with a connecting edge extending along an axial direction of the outer wall, the connecting edge having an upper terminal connected to the bottom of the outer wall,
• wherein the sealing member is sealingly connected with the outer wall through mounting a metal ring at the upper terminal of the connecting edge of the sealing member and fixing the metal ring at the bottom of the outer wall,
• wherein an upper end of the metal ring is provided at its inner side with a flange, the upper terminal of the connecting edge being abutted against a bottom surface of the flange, and
• the method further comprises fixedly connecting the connecting edge with the metal ring through vulcanization or adhesive,
• wherein the bottom of the outer wall is provided at its lower edge with an annular groove, and
• the method further comprises clamping the metal ring in the groove so as to fixedly connect the metal ring with the outer wall,
• further comprising providing a rubber pad in the groove of the outer wall, and connecting the outer wall, the rubber pad and the metal ring together by bolts,
• wherein the metal ring has a protrusion radially extending in the sealing member.