Dredging device for hydrological facilities

The utility model discloses a desilting device for hydrological facilities, which is characterized in that a driving box is arranged on one side of a first rain gauge, a positioning table is arranged in the driving box, and a rotating seat is rotatably arranged on the positioning table; the driving box is provided with two power units, the power units are located on the two sides of the positioning table respectively, and the output ends of the power units movably extend out of the driving box. A first displacement mechanism is arranged at the upper end of the first rain gauge and comprises a top cover, the two sides of the top cover are connected with the output ends of the power units respectively, the lower end of the top cover is in sliding connection with the upper half section of the first rain gauge, and the upper end of the top cover is rotationally connected with the outer side of the driving rod; the inner side of the driving rod extends into the driving box through the first long-strip-shaped openi