Fixing device

The utility model provides a fixing device, and relates to the technical field of aero-engines. The fixing device comprises a base, a fixing mechanism used for fixing the aero-engine and a damping mechanism used for supporting and damping the engine. According to the fixing device, by starting a first motor, the lower surface of a connecting plate is attached to the upper surface of a sliding plate, then bolts are used for fixing the connecting plate and the sliding plate, then an electric telescopic rod is started, and one end of the electric telescopic rod drives the sliding plate to slide downwards along the outer surface of a first support; the outer surface of an elastic band is tightly attached to the outer surface of the aero-engine body, an air inlet of the aero-engine body is conveniently fixed to the upper surface of a fixing base, then a second motor is started, and the inner side face of a fixing ring is slidably connected with the outer surface of the aero-engine body; and therefore, the fixing r