Variable-diameter mass concrete pouring heat preservation experiment frame

The utility model discloses a variable-diameter mass concrete pouring heat preservation experiment frame which comprises a fixed bottom plate which is designed to be square and used for placing a pouring formwork, a heat preservation frame, a protective door which is fixedly installed on the upper surface of the fixed bottom plate and used for conducting heat preservation protection on the pouring formwork, and a fixed bottom plate which is fixedly installed on the lower surface of the fixed bottom plate and used for conducting heat preservation protection on the pouring formwork. And the electric heating wire is installed on the inner wall of the heat preservation frame and the inner wall of the protective door in an embedded mode. The variable-diameter mass concrete pouring heat preservation experiment frame is provided with a limiting plate and a fixed clamping plate, when the experiment frame works, the limiting plate is driven by an electric push rod to slide, an opening in the surface of the limiting pl