Novel dynamic-static hybrid tilting pad radial gas bearing

Abstract

The invention discloses a novel dynamic-static hybrid tilting pad radial gas bearing which mainly consists of an integrated tilting pad radial gas bearing body, a porous pad surface, a porous pad surface clamping board, a compressible gasket, a gas inlet tube and a tapered cap, wherein a tilting pad block of the integrated tilting pad radial gas bearing body is provided with a groove structure in an axial direction; the porous pad surface adopts a shaft shoulder type structure and is embedded into the groove structure of the tilting pad radial gas bearing body to form peripheral positioning and clamping, is pasted on the inner wall of the integrated tilting pad radial gas bearing body through coaxial glue, and is axially clamped by virtue of a flange structure on the porous pad surface clamping board to form axial positioning and clamping. The novel dynamic-static hybrid tilting pad radial gas bearing can effectively improve stability of the bearing, can prevent a shaft neck and a bearing surface from direct contact friction and can reduce abrasion to a bearing pad, is good in bearing heat dissipation, uniform in bearing temperature distribution and relatively small in temperature rise; and a thermal expansion problem is relieved.

Description

technical field [0001] The invention relates to the technical field of air bearings, in particular to a novel dynamic and static pressure hybrid tilting pad radial gas bearing. Background technique [0002] Aerostatic bearings use gas as a lubricant for sliding bearings. The gas is forcibly pumped into the gap between the bearing and the shaft through an external pressurized gas source to form an air film to balance the external load. The friction pair of the aerostatic bearing is separated by the pressure gas film during the start-up and operation, and there is no direct contact between the shaft and the bearing to generate friction. The friction force only comes from the viscosity of the gas, so the friction force is small, and the service life is long without friction and wear. ; The hydrostatic bearing has the effect of homogenizing the error, which can effectively reduce the influence of the error in the bearing processing and assembly process, so the aerostatic bearing...

AI Technical Summary

Problems solved by technology

However, during the start and stop process of the dynamic pressure bearing, the journal and the bearing surface are in direct contact with friction, which is prone to friction and wear; the problem of uneven temperature distribution of the bearing and thermal expansion is more serious than that of the static pressure bearing

Images