Emergency waterproof device for municipal water conservancy subway entrance

The utility model discloses a municipal water conservancy subway entrance emergency waterproof device which comprises a fixing frame and two sets of extension plates connected to the fixing frame in a sliding mode, the two sets of extension plates are located on the front side and the rear side of the fixing frame respectively, racks are fixedly connected to the extension plates, a first rotating rod is rotationally connected to the fixing frame, and a second rotating rod is connected to the first rotating rod. The first rotating rod is fixedly connected with a gear, and the gear is engaged with the rack; the device is easy to use and convenient to operate, the two extension plates are driven by the racks to slide out of the left side and the right side of the fixing frame respectively to abut against walls on the two sides of a subway entrance and exit for fixing, installation is completed, the labor intensity of manual sandbag water proofing is reduced, the water proofing efficiency is improved, meanwhile,