Noise reduction device for engine of small-sized electric power inspection unmanned aerial vehicle

The utility model discloses a small-sized electric power inspection unmanned aerial vehicle engine noise reduction device, and relates to the technical field of engine noise removal, the small-sized electric power inspection unmanned aerial vehicle engine noise reduction device comprises a noise reduction box, the periphery of the inner wall of the noise reduction box is provided with limiting cylinders, and the inner wall of one end, close to the center, of each limiting cylinder is slidably connected with a positioning rod; a noise reduction plate is fixedly connected to the ends, close to the center, of the four positioning rods, a pressure groove is formed in the inner wall of the noise reduction box, and the inner wall of the pressure groove extends to the inner wall of the limiting barrel. And then the limiting block stably moves the noise reduction plate, the air pressure in the pressure groove is detected through the air pressure monitor, the air pressure generated in the pressure groove is convenient