High-temperature furnace bottom support non-sinking fire-resistant structure

The utility model discloses a high-temperature furnace bottom support non-sinking fire-resistant structure which is characterized in that a furnace bottom comprises a transverse support layer, a high-temperature corundum fire-resistant layer is fixed above the transverse support layer, and heat preservation areas and two longitudinal support parts distributed between the heat preservation areas are fixed below the transverse support layer; the supporting frame is formed by the transverse supporting layers and the longitudinal supporting parts, so that the technical problem that the whole furnace bottom sinks can be effectively solved; meanwhile, each insulating brick is fixed between two third refractory bricks or between the third refractory bricks and the second refractory bricks, and through the clamping mode, after the insulating bricks are heated and shrunk, the size of the clamping grooves is reduced, so that the second clamping parts or the third clamping parts are clamped tightly, and the insulating b