| 摘要 |
1,007,550. Vibration damping; toothed gearing. ROLLS-ROYCE Ltd. Aug. 7, 1964 [Sept. 20, 1963], No. 37183/63. Headings F2S and F2Q. A gear device comprises a driving member 20 attached to or integral with a drive member 21 and a resilient member 35 extending between the driving and driven members and being attached to or integral with one of the members. A chamber 36 is defined by the resilient member and the other member, and means e.g. holes, 43, are provided for introducing fluid into the chamber 36 to damper relative vibrations of the driving and driven members. In the construction shown the resilient member is metallic and the inner periphery forms an interference fit with a seating 40 of driven member 21 while the outer periphery is urged against an annular face 41 of the driving member by its own resilience. The driving and drive members 20, 21 co-operate with a gear wheel 13 and a bevel gear 16 respectively. The gear device is disposed within a fluid-filled casing such that fluid enters the chamber 36 through holes 43 and on the centrifugal force of the fluid reaching a certain level, the outer periphery of the resilient member is urged away from its seat to allow the flow of fluid through the chamber. In a further embodiment the resilient member comprises a flange, integral with the driven member and attached to a face of the driving member by a plurality of bolts. The inner periphery of the flange is scalloped to provide a plurality of chambers and an inlet thereto, fluid again distorting the outer periphery of the resilient member at a certain pressure (Figs. 3, 4, not shown). The gear device may form part of a gas-turbine engine (Fig. 1, not shown). |
