Semi-flexible three-blade propeller hub

The invention relates to a semi-flexible three-blade propeller hub, and relates to the technical field of civil aircrafts, the semi-flexible three-blade propeller hub comprises a base, a propeller clamp and a buffer assembly, the propeller clamp is installed on the base, the buffer assembly comprises a center piece and a pressure bearing piece, the center piece is arranged between the base and the propeller clamp and is located at the center of the base, and the pressure bearing piece is located at the center of the base. The center piece is used for connecting a main shaft and the paddle clamp; the center piece is arranged on the base, the propeller clamp is arranged on the center piece, the pressure-bearing pieces are arranged around the center piece, the two ends of each pressure-bearing piece are connected with the propeller clamp and the base respectively, the pressure-bearing pieces are used for absorbing shimmy from the propeller clamp, and the pressure-bearing pieces are made of flexible materials. Th