Building heat preservation post

The utility model relates to a building cylinder technical field is a building heat preservation post. Including concrete cylinder, polyurethane insulation board and positioner, positioner is including the last steel sheet that is L shape and the lower steel sheet that is L shape, and the long limit that is the last steel sheet of L shape is fixed in the anterior upper end of concrete cylinder, the minor face orientation that is the last steel sheet of L shape down and lie in the front side that the concrete column was personally experienced sth. Part of the body, the anterior lower extreme at the concrete cylinder is fixed on the long limit that is the lower steel sheet that L appeared, the minor face orientation that is the lower steel sheet that L appeared up and lie in the front side that the concrete column was personally experienced sth. Part of the body. The utility model discloses rational in infrastructure, convenient to use, during the construction with the polyurethane insulation board edgewise insert last steel sheet the minor face, be the lower steel sheet of L shape minor face and concrete cylinder between can, not only work efficiency is high, installation compactness in addition is through two sides at the concrete cylinder also fixed position device to the heat preservation effect has further been improved.