Heat preservation well lid

The utility model relates to a heat preservation well lid. Including apron and cage, the apron is articulated with the cage, and there is the ladder manhole at the center of cage, and the first platform of ladder manhole supports and inlays the dress the apron, the second platform of ladder manhole supports and inlays the dress lid that keeps warm. Its simple structure, with low costs, thermal insulation performance is good. 本实用新型涉及种保温井盖。包括盖板和盖座，盖板与盖座铰接，盖座的中心有阶梯人孔，阶梯人孔的第台支撑嵌装所述的盖板，阶梯人孔的第二台支撑嵌装保温盖。它结构简单，成本低，保温性能好。