COMBINED RADIAL-AXIAL GAS-DYNAMIC SPADE JOURNAL BEARING

摘要

FIELD: machine building.SUBSTANCE: invention relates to turbomachines building and can be used as high-speed machines rotors supports and units to provide higher carrying capacity while maintaining stable position of rotor loaded with radial and axial loads, at maximum high speed, as well as in aircraft cabins air conditioning systems, turbocharger systems in modern car building and in micro gas turbine electrical generating units. Combined radial-axial gas-dynamic spade bearing includes housing (1), made in form of bushing with inner cylindrical surface, in which inserts (2) with attached spades (3) are installed. Design provides for conical and cylindrical parts of shaft (5) and journal bearing (4). Surface of shaft (5) between roller bearing (6) and journal bearing (4) is composed by herringbone grooves (7). Housing (1) inner surface is made in form of three sections with different diameters. On housing (1) external surface gas supply openings (8) are made.EFFECT: technical result is improved service life and reliability of “rotor-support” system by roller bearings and journal bearings functions division and duplication.1 cl, 3 dwg