| 摘要 |
1,099,730. Toothed gearing. J. WAGNER, [trading as JOSEF WAGNER]. March 16. 1966 [March 20, 1965], No. 11539/66. Heading F2Q. A helicopter rotor drive includes at least one input shaft 3 driving at least one rotor shaft 7 through a bevel pinion 5 meshing a crownwheel 6 on the shaft 7, the crownwheel being supported near the periphery of its untoothed side, at least in the region where the pinion 5 applies axial thrust to the crown-wheel, by a roller or plain bearing 9. As shown, coaxial rotor shafts 7, 7<SP>1</SP> are splined to the hubs 14, 141 of respective crown-wheels 6, 6<SP>1</SP>, each driven by its own bevel pinion 5, 5<SP>1</SP>, the parallel shafts 4, 4<SP>1</SP> thereof being driven through reduction gearing from the input shaft 3. An annular casing member 12 supports thrust bearings 9 for the crown-wheels 6, and roller bearings 11 in which run annular flanges 10 of the hubs 14. A thrust bearing 18 is located between radial flanges of the hub 14. Rotor lift forces are transmitted to the gear casing from the shaft 7 via a member 19, the hub 14, and the bearing 9, and from the shaft 7<SP>1</SP> via a bearing (not shown) in a part 21 secured to the casing. |
