The utility model provides a tire vulcanizer center mechanism and a tire vulcanizer, the center mechanism comprises a mounting rack arranged in a vulcanizing chamber, a cylinder
barrel is vertically arranged in the mounting rack, a center rod is arranged in the cylinder
barrel, and an upper mounting plate is fixedly mounted at the bottom of the cylinder
barrel; one end, extending out of the cylinder body, of a
piston rod of the upper ring oil cylinder upwards penetrates through the upper mounting plate and is fixedly connected with the bottom end of a center rod in the cylinder barrel; pull rods are symmetrically arranged on the two sides, located on the cylinder barrel, of the mounting rack, lower mounting plates are fixedly connected to the bottom ends of the pull rods on the two sides, and the ends, extending out of cylinder bodies, of
piston rods of the two lower ring oil cylinders upwards penetrate through the lower mounting plates and are fixedly connected with the upper mounting plates; a lower ring seat is fixedly mounted at the top of the cylinder barrel; a clamping ring is fixedly mounted at the top end of the center rod; and a guide sleeve is sleeved outside the cylinder barrel. Compared with an existing structure, the
diameter of the oil cylinder can be reduced in a matched mode, so that cost needed by the oil cylinder can be saved, the structure is more compact, occupied space is reduced, and stability and centering performance of the lifting device in the lifting process can be improved.