| 摘要 |
A planetary gear system (A) includes a sun gear (2), a ring gear (4), planet gears (6), and a straddle-type carrier (8) having two end walls (12, 14) and pockets (18) between them. The planet gears form part of the planet assemblies (B) that are installed as units in the pockets where the planet gears rotate in engagement with the sun and ring gears. Each planet assembly includes a pin (36) about which the planet gear rotates on a bearing (46) that is integrated into the pin and planet gear in that its raceways (48, 50) form surfaces on the planet gear and pin, thus allowing for a planet gear of reduced pitch diameter. The pin is clamped tightly between the two end walls by a cap screw (30) that extends through the pin, and this serves to further stiffen the carrier and resist carrier wind-up. |
