Combined elastic gear

A combined elastic gear provided with an elastic buffer element aims to prolong the fatigue life of a drive device under the working conditions of strong impact and complex load, and structurally consists of a hub, a gear ring, an elastic buffer element and a fastening and connecting piece. As the structure is rather simple, the load transferring capacity is big, the service life is long, and the combined elastic gear is applicable to the high-temperature working condition, when the combined elastic gear is in work, the functions of buffering and vibration damping on the working load can be achieved through the elastic deformation of an elastic membrane, the amplitude is reduced, and further the fatigue lives of rotating members as a gear pair and a bearing are prolonged.