The utility model belongs to the power equipment field relates to the isolator support frame, especially relates to an isolator is support column for support frame. Including being pipy body, the body includes that bilateral symmetry sets up left tubular column and right tubular column, a left side tubular column and the right tubular column constitution body of mutually supporting, the pipe wall of left side tubular column and right tubular column includes outer wall and inner wall and fills the expanded material between outer wall and inner wall, expanded material is polyethylene expanded material. Compared with the prior art, the utility model discloses an advantage lies in with positive effect, the utility model discloses a control the support column that the separation was just mutually supported and is set up, and then made things convenient for the change of traditional support column, simultaneously, utilize rotational moulding foaming technique, replace into polyethylene expanded material and high density polyethylene with traditional fiber reinforcement type polyurethane combined material, in assurance support column quality and effect, reduced production and use cost, practiced thrift the resource.