Dynamic sealing structure for heavy hinge and dynamic sealing ring of dynamic sealing structure

The invention relates to a dynamic sealing structure for a heavy hinge and a dynamic sealing ring of the dynamic sealing structure. The dynamic sealing structure comprises a first hinge body and a second hinge body which are arranged in a matched mode, a first hinge part and a second hinge part extend from the connected ends of the first hinge body and the second hinge body respectively, and the first hinge part and the second hinge part are arranged up and down and jointly provided with a through shaft to achieve rotation of a hinge; the through shaft is sequentially sleeved with the dynamicsealing ring and a gasket, a first sealing lip of the dynamic sealing ring is attached to the outer side face of the through shaft, and a second sealing lip of the dynamic sealing ring is attached tothe gasket; the gasket is downwards embedded into the second hinge part, and an O-shaped ring is mounted in a gap between the gasket and the second hinge part. According to the dynamic sealing structure, the dynamic sealing ri