Bolt for wind power main engine

The utility model discloses a bolt for a wind power main engine, and relates to the technical field of bolts. The bolt comprises a bolt body, the bolt body is composed of a screw tube and a screw rod, a bolt tail is arranged at one end of the screw tube, an annular groove and a fixing hole are formed in the bolt tail, a sealing cover is arranged in the fixing hole, an adjusting block is arranged in the screw tube, an adjusting rod is arranged on the adjusting block, the screw rod is arranged at one end of the adjusting rod, and a bolt head is arranged at one end of the screw rod. An elastic sealing pipe and a sealing ring are arranged on the outer surface of the screw pipe. According to the utility model, the adjusting rod is arranged in the adjusting block, so that the length of the bolt can be flexibly adjusted according to different mounting positions, the time for assembling personnel to pick and sort the bolt is shortened, and the assembling efficiency is improved; the elastic sealing pipe and the sealin