Elastic ring type damper with metal rubber layer

Abstract

The invention provides an elastic ring type damper with a metal rubber layer. The elastic ring type damper comprises a rigid bearing seat, an axial baffle and an elastic ring. The rigid bearing seat comprises a fixed mounting edge, a baffle mounting edge and a bearing mounting hole; the baffle is mounted on the bearing seat baffle mounting edge through a bolt; the elastic ring comprises an elastic inner ring with an inner boss, an elastic outer ring with an outer boss and a metal rubber layer located between the inner ring and the outer ring, and the metal rubber layer can be composed of a single-layer metal rubber ring and can also be composed of a plurality of arc-shaped metal rubber sheets which are evenly distributed in the circumferential direction. The problems that a single-layer elastic ring is too large in relative deformation and prone to damage are solved through the structural design method that the elastic ring is internally and externally layered, and a metal rubber damping material is used for replacing a traditional oil film damping structure; the complex oil way design problem caused by an oil film and the oil film oscillation instability problem existing in a centering type extrusion oil film damper are avoided.

Description

technical field [0001] The invention belongs to the technical field of elastic support design of a small-sized and high-speed aero-engine rotor system, and in particular relates to an elastic ring damper with a metal rubber layer. Background technique [0002] Aeroengine is a high-speed rotating power device, and the rotor often works at the first-order critical speed, or even above the multi-order critical speed. When the speed approaches or passes the critical speed, the vibration response of the rotor system will be significantly improved. Therefore, the engine rotor-support system often adopts elastic support. While adjusting and controlling the critical speed, the deformation of the elastic support itself and its material internal resistance are used to absorb the vibration energy of the rotor and play a role in reducing vibration. The elastic ring type elastic support is composed of one or more elastic rings with inner and outer bosses, which are installed between the ...

AI Technical Summary

Problems solved by technology

[0004] 1) The reduction in the allowable installation space of the elastic ring poses a challenge to its strength and stiffness design. If the thickness of the elastic ring is too large, the stiffness adjustment range will be reduced, and if the thickness is too small, the bearing capacity will be insufficient;

[0005] 2) The use of extruded oil film for damping and vibration reduction requires a special oil circuit to supply lubricating oil, the cost of structural design, processing and assembly is high, and the mass of components will be increased;

[0006] 3) During the high-speed operation of the rotor, there is angular deformation of the journal position, resulting in inconsistent axial distribution of the oil film gap, which will affect the damping effect of the oil film, and cause abnormal vibration problems of the rotor such as oil film oscillation instability

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