| 摘要 |
931,180. Planetary hub gears. CLARK EQUIPMENT CO. May 1, 1962 [May 19, 1961], No. 16566/62. Class 79(2). In a planetary reduction gear which is contained within the wheel hub 18 of a fork-lift truck and comprises planet pinions 46 mounted in a carrier 40 splined to an axle housing 12 and a ring gear 36 secured to the wheel hub 18, a sun gear 32 driving the reduction gear is either rotatably mounted on an axle shaft 14 extending through the housing 12 and is disconnectably coupled to the axle shaft by a dog clutch 58 as shown in Fig. 1 or the sun gear is splined to the axle shaft and may be slid out of engagement with the planet pinions 46. The dog clutch 58 is engaged with the sun gear 32 by means of a lever 60 carried on a shaft 68 (Fig. 2) which extends through a cap 70 on the hub 18 and is rotated by a rod inserted in a hole 88. A spring- loaded ball mechanism 72 engages depressions 74, 76 in the lever 60 to retain the dog clutch 58 in the engaged or disengaged position. In Fig. 3 (not shown) a similar lever system but disposed below the axle shaft slides the sun gear 32 in and out of engagement with the planet wheels 46. |
