| 主权项 |
1. A gearbox comprising:
a first gear assembly having a first input gear coupled to an input shaft and the first gear assembly also coupled to a connecting shaft, wherein the first gear assembly is configured to engage and provide a first rotational input to the connecting shaft in response to the input shaft rotating in a first direction and wherein the first gear assembly is configured to disengage in response to the input shaft rotating in a second direction, in which the second direction is rotationally opposite from the first direction; a second gear assembly having a second input gear coupled to the input shaft, wherein the second input gear is configured to provide a second rotational input in response to the input shaft rotating in the first direction and to provide a third rotational input in response to the input shaft rotating in the second direction, in which the second rotational input and the third rotational input are rotationally opposite; and a planetary gear assembly including a planet gear carrier, a plurality of planet gears and a ring gear assembly, wherein the planet gear carrier is coupled to the plurality of planet gears and to an output shaft, wherein the connecting shaft couples the first gear assembly to the plurality of planet gears and wherein the ring gear assembly couples the second input gear to the plurality of planet gears via the ring gear assembly, in which when the input shaft rotates in the first direction, the first rotational input from the first gear assembly and the second rotational input from the second gear assembly are combined to provide a first rotational output at the output shaft and when the input shaft rotates in the second direction, the first gear assembly is disengaged and the ring gear assembly is configured to provide the third rotational input in order to provide a second rotational output at the output shaft, the first and second rotational outputs being rotationally opposite. |
