Concrete large-width overflow curved surface construction device

The invention relates to a concrete large-width overflow curved surface construction device. The concrete large-width overflow curved surface construction device comprises a fixing device, a walking device and a truss, the fixing device is connected with the walking device through a sliding rail, and the truss is fixedly arranged on the walking device; the fixing device comprises a snakelike anchor bar, the snakelike anchor bar is embedded in an overflow face guide wall, one end of the overflow face guide wall is fixedly connected with a climbing cone, the end, connected with the snakelike anchor bar, of the climbing cone is embedded in the overflow face guide wall, a steel supporting bracket is fixedly arranged at the other end of the climbing cone, and the sliding rail is fixedly arranged on the end face of the steel supporting bracket; the walking device comprises walking wheels and a guide device, the walking wheels are connected with a first supporting frame through bearings, and a fixing plate is arrang