A Wear Prevention Device of Gas Foil Bearing in High-Speed Revolution Axis System

摘要

The invention that has a foil bearing on gas foil bearing wear protection system in a high-speed rotating shaft system wear a top foil work by interfering with the rotation axis of the load bearing capacity of the reduction maneuver or stop by during foil bearing equipped with a collet wing section is formed from the axis of rotation taking place in accordance with the centrifugal system to configure different bearings to support the rotating shaft when the high and low Furthermore, regarding the shape of the bump foils will cause even the wear of the gas foil bearing defense system to prevent plastic deformation of the problem. ; gas foil bearing wear prevention system of the present invention the rotating shaft is supported by the foil bearing system In the wear protection system, characterized in that the axis of rotation number of the blade portion is formed on one end and the collet takes place in a circumferential direction of the wing portion by a centrifugal force during high-speed rotation, a sleeve to limit the displacement of the collet is provided, in the foil bearing and the bearing housing, the outer ring of the rolling bearing sapseol, the bushing, the inner ring of the rolling bearing is installed and secured to the bushing collet and the slow speed at stop rolling bearings and bushings are combined to support the rotating shaft. ; can be stationary and thus extends the life of the gas foil bearing to prevent wear and plastic deformation of the top foil work and bump foil that occur in low-speed rotation state of the rotation axis.