Assembly structure of large-scale revolving shaft bearing

The utility model discloses an assembly structure of a large rotating shaft bearing. Speed reducer comprising a speed reducer body, a front bearing seat is fixed on the right side of the speed reducermain body; the right side of the speed reducer main body in the front bearing seat is sleeved with a first lip-shaped sealing ring; the right side of the first lip-shaped sealing ring is sleeved witha front bearing gland, a circlip for a shaft is sleeved with the front bearing gland, the right side of the front bearing gland is sleeved with a bearing body, a second lip-shaped sealing ring is arranged on the right side of the bearing body, and a sealing gland is arranged on the right side of the front bearing pedestal. According to the utility model, the bearing main body is fixed through thefront bearing gland and the sealing gland; and through cooperation of the first lip-shaped sealing ring and the second lip-shaped sealing ring on the two sides, the sealing performance in the assembling process is improved, th