Elastic annular type damping structure used for high-rotating-speed engine

Abstract

The invention discloses an elastic annular type damping structure used for a high-rotating-speed engine. The structure comprises an inner ring base with a bearing chamber, an elastic ring, O rings, and an outer ring base. The two O rings are located in ring grooves of the inner ring base and the outer ring base, an outer boss of the elastic ring is in contact attaching to the outer ring base, an inner boss of the elastic ring is in contact attaching to the outer wall face of the inner ring base, the two O rings are located on the two ends of the elastic ring, and the inner ring base and the outer ring base adopt structures capable of preventing relative rotation. According to the elastic annular type damping structure used for the high-rotating-speed engine, for the high-rotating-speed engine, elastic bearing and damping mechanical structure design are achieved, bearing rigidity is reduced, damping is improved, vibration of the high-rotating-speed engine is reduced, the structure sizeis small, and reliability is high.

Description

technical field [0001] The invention relates to an elastic ring damping structure of a high-speed engine, which is used for reducing the vibration level of the high-speed engine. Background technique [0002] The operating speed of modern aero-engines is often greater than the critical speed, so it is necessary to design elastic support and damping mechanical structures to reduce support stiffness and increase damping, thereby reducing engine vibration. For conventional large aeroengines, the operating speed is generally below 50,000rpm (rpm is the unit of speed, 1rpm means 1 revolution per minute), and there is enough dimensional space for designing elastic supports. On the contrary, high-speed engines, especially aero-engines or turbochargers with speeds above 50,000rpm, have limited size and space, and O-rings (rubber rings) are usually used instead of elastic supports and damping mechanical structures to reduce engine vibration, such as AMT The company's NIKE small turb...

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