Bionic pectoral fin propelling device based on planetary gear train

The utility model discloses a bionic pectoral fin propelling device based on a planetary gear train. The bionic pectoral fin propelling device comprises a machine frame, a power source, a propelling portion, a left and right maneuvering portion, a fixed bearing plate, a movable bearing plate, a left pectoral fin, a right pectoral fin, a fish body and a tail fin. The fixed bearing plate and the movable bearing plate are installed on the machine frame in parallel. The fixed bearing plate is located in front of the movable bearing plate. The left and right maneuvering portion is located between the fixed bearing plate and the movable bearing plate. According to the bionic pectoral fin propelling device, the problem that the two pectoral fins are not synchronous is solved, variable speed propelling and left-right maneuvering are achieved, the bearing capacity of the propelling device is improved, and the bionic pectoral fin propelling device is particularly applicable to occasions with the limited space.