Patent ID: 10865855

Abstract:
The present invention provides a variable-speed speed-up gear including an electric driving device (50) that generates a rotational driving force, and a planetary gear transmission device (10) that changes the speed of the rotational driving force generated by the electric driving device (50) and transmit the changed rotation driving force to a driving target, wherein a sun gear shaft (12) forms an output shaft (Ao) connected to the driving target, an internal gear carrier shaft (37) configures a constant-speed input shaft (Ac), and a planetary gear carrier shaft (27) configures a variable-speed input shaft (Av), the electric driving device (50) includes a constant-speed motor (51) having a constant-speed rotor (52) which is configured to rotate a constant-speed input shaft of the transmission device, and a variable-speed motor (71) having a variable-speed rotor (72) which is configured to rotate the variable-speed input shaft of the transmission device, the variable-speed rotor (72) and the planetary gear carrier shaft (27) have a shaft insertion hole (74) which is formed in a cylindrical shape around the axis and passes therethrough in the axial direction, and the constant-speed rotor (52) is inserted through the shaft insertion hole (74) and has an inertia body (3) which is configured to rotate in conjunction with the output shaft (Ao).