Support structure for three-phase conducting pole

The utility model belongs to the field of high voltage power transmission and transformation, and discloses a support structure for a three-phase conducting pole, comprising a support insulator arranged in a casing. The support insulator is in a equilateral triangle; three support feet contacting with the casing are arranged on the support insulator; three through holes for the penetration of the conducting pole are uniformly distributed on the support insulator; with the support structure for the three-phase conducting pole, the three-phase conducting pole can be firmly and reliably fixed in a power transmission metal conduit, and effective insulation and the reliability of dynamo thermal stability can be guaranteed; as the conducting poles are symmetrically arranged in a triangle shape, the uniform distribution of an electric field can be guaranteed; as a wedge pressing device can fixedly fasten the support insulator and the conducting poles, the support structure for the three-phase conducting pole has simple and reliable structure; and as the support feet adopt a spring rolling element adjusting device, not only good contact with the internal wall of the metal conduit can be guaranteed, but also the adjustment of the support feet can be automatically made so as to satisfy the manufacture error of the internal diameter of the metal conduit and the coaxiality of the three-phase conducting poles can be guaranteed so as to facilitate the butted joint of plugs at two ends of the conducting poles.