High-radial-stability elastic bearing

Abstract

The invention belongs to the design technology of elastic bearing structures, and relates to a high-radial-stability elastic bearing. The high-radial-stability elastic bearing basically comprises a small joint, a plurality of first sphere center sphere surface rigid spacers, a plurality of first sphere center sphere surface rubber layers, a middle rigid transition part, a plurality of second sphere center sphere surface rigid spacers, a plurality of second sphere center sphere surface rubber layers and a large joint. The high-radial-stability elastic bearing has the advantages that through thedesign of the two groups of same sphere center sphere surface rigid spacers with different sphere centers, the stability of the radial load resistance of the spherical elastic bearing is improved, the strain energy density of the rubber layer, close to the side of the small joint, of the spherical elastic bearing is reduced, so that the overall service life of the spherical elastic bearing is greatly prolonged.

Description

technical field [0001] The invention belongs to the elastic bearing structure design technology and relates to a structure of an elastic bearing with high radial stability. Background technique [0002] Helicopters are an important force in national economic construction, especially in earthquake relief and emergency rescue, which play an irreplaceable role. The rotor is the key moving part of the helicopter, which provides the lift and control force required for the flight of the helicopter. Rotor technology directly affects the performance of the helicopter, represents the advanced degree of the helicopter, and is also an important symbol of the generation of the helicopter. In the fully articulated rotor configuration, there are a large number of various metal bearings in the propeller hub due to the existence of flapping hinges, shimmy hinges and variable pitch hinges, resulting in a complex structure of the propeller hub, a large number of parts, and high manufacturing...

AI Technical Summary

Problems solved by technology

The existing spherical elastic bearing will lead to the eccentric instability of the metal-rubber laminate when the radial load increases, which will cause uneven stress on the rubber layer inside the spherical elastic bearing, resulting in a rapid decline in the performance of the rubber layer and premature fatigue failure

Therefore, it can be said that the existing spherical elastic bearings have poor ability to resist radial loads, and their life will be greatly reduced due to the increase of radial loads.

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