Lubricating and sealing device for central pivot of electric shovel

The invention relates to the technical field of electric shovel sealing, in particular to an electric shovel central pivot lubricating and sealing device which comprises a mounting unit, a sealing unit and a sealing unit. The dismounting unit comprises a plurality of first notches formed in the inner wall of the mounting ring and dismounting assemblies which are arranged in the mounting ring and penetrate through the first notches; and the sealing unit comprises a plurality of second notches formed in the inner wall of the mounting ring and a sealing assembly which is arranged in the mounting ring and penetrates through the second notches. According to the lubricating and sealing device for the central pivot of the electric shovel, the mounting ring is mounted in the mounting groove in the connecting position of the central pivot, when the sealing ring is replaced, the sealing ring is taken out of the mounting ring through the dismounting assembly, a new sealing ring is mounted through the sealing assembly fo