| 摘要 |
Secondary level pinion shafts (4) are coaxially secured to respective secondary level gears (5), and coupled with respective primary level pinion shafts (2) for driving rotation. Each pair of secondary level gears engages with respective output pinion shafts (6) for driving rotation. Two groups of primary level pinion shafts have teeth engaged with outer peripheral teeth of large gear (1). <??>Two groups of primary level gears (3a,3b) are coaxially secured to respective groups of primary level pinion shafts for driving rotation. The first group of primary level gears is located on one axial side of the large gear, and the second group of primary level gears is located on the opposite axial side of the large gear. Each primary level gear and an associated primary level gear are commonly engaged with respective primary level pinion shaft to drivingly rotate the pinion shafts (8). |
