Axial thrust foil dynamic pressure air bearing

• Main Authors: LU SHENGCE, YUAN TIANZE, ZHU BINGSHUO, NIU SHUTAN, WANG HONG
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2021
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses an axial thrust foil dynamic pressure air bearing, which comprises a bottom plate, a plurality of flat foils and a plurality of elastic foils, a flanging structure hooked with the bottom plate is arranged at the free end of each flat foil, and a hook part penetrates through the bottom plate and is hooked with the back surface of the bottom plate, so that a maximum accommodating gap formed between the bottom plate and the flat foils is fixed. Under the action of air film pressure on the top layer flat foil bearing area, the top layer flat foil can only compress the containing gap and cannot warp outwards, so that the top layer flat foil does not have the characteristic of freedom degree or warping outwards by a certain distance in the axial direction any more; the problem that the tail end of the top foil moves outwards in the axial direction or is warped to be in contact with the thrust plate to be abraded in the using process is solved, and the service lifeof the bearing is prolon