| 摘要 |
A motor transmission and gearbox for downhole use, comprises, a first motor driving a first input shaft, a second motor driving a second input shaft, a gearbox comprising at least, a ring gear, a sun gear, and, a planetary gear and planetary carrier. The first input shaft drives either the ring gear, the sun gear or the planetary gear and/or planetary carrier, the second input shaft drives one of the gears not driven by the first input shaft, and the remaining gear driving the output shaft. |
