Elastomeric teetering hinge

摘要

The invention generally relates to two-bladed turbine nacelles and associated teetering hinges. In certain embodiments, the invention provides a hinge assembly encompassing a hub and two double elastomeric teeter bearings. In some aspects, the bearings are self-contained elements that can be preloaded in a controlled manner prior to their incorporation into the larger assembly.

主权项

1. A teetering hinge assembly, the assembly comprising:
a hub comprising a shell; a T shaped head of a turbine shaft with two horns; and at least two double elastomeric teeter bearings positioned between the hub shell and the two horns of the T shaped shaft head, wherein each teeter bearing comprises a plurality of metal-elastomeric elements comprising:
a plurality of metal shims; anda plurality of elastomeric bonding layers; and wherein the plurality of metal-elastomeric elements are stacked one into the other, such that each metal-elastomeric element comprises a separate preload.