Flow measuring device of water surface flow velocity monitoring unmanned aerial vehicle

The utility model relates to the technical field of water surface flow velocity monitoring, in particular to a flow measuring device of a water surface flow velocity monitoring unmanned aerial vehicle, which comprises a holder carrying plate, a limiting shell fixedly arranged at the bottom end of a leveling toothed plate, and a limiting sliding block fixedly arranged at the top end of the leveling toothed plate. Base plates are fixedly arranged at the bottom end of the leveling toothed plate and the inner wall of the top of the limiting shell, inserting rods are fixedly arranged at the bottom ends of the base plates, the outer sides of the rear ends of the inserting rods and the disc table are rotationally arranged, a flow measurement integration box is fixedly arranged at the bottom end of the disc table, and guide sleeve rods are fixedly arranged at the left end and the right end of the disc table outwards; a second stepping motor is fixedly arranged on the inner wall of the rear end of the limiting shell;