Power transmission line bolt part auxiliary installation device

The invention belongs to the technical field of power transmission lines, and discloses a power transmission line bolt part auxiliary installation device. The auxiliary installation device comprises acasing pipe, the casing pipe comprises two half pipelines, the front end of the casing pipe is provided with an insertion end used for sleeving of a bolt, the inner wall of the casing pipe is sequentially provided with a flat gasket groove, a spring gasket groove and a nut groove from the insertion end to the other end, and a flat gasket is limited in the flat gasket groove; a spring gasket is limited in the spring gasket groove; a nut is limited in the nut groove and does not move relative to the nut groove in the circumferential direction. A flat gasket, a spring gasket and a nut groove aresequentially arranged in the casing pipe from the insertion end, and the flat gasket, the spring gasket and the nut can be accommodated before installation. The casing pipe comprises the two half pipelines, after the bolt is