Air foil dynamic pressure bearing

• Main Authors: LIU ZHIYUAN, YU SHIJIE, ZHANG YONGTAO, ZHANG JINGDAN
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2020
• 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 invention discloses an air foil dynamic pressure bearing, and relates to the technical field of bearings. The air foil dynamic pressure bearing comprises a bearing body and a bearing neck matchedwith the bearing body, the bearing body comprises a main body, at least three pressing plates, an elastic thin film, cylindrical cavities and driving parts are further included, and mounted on the inner cylinder face of the main body in an evenly-spaced manner, the elastic thin film is mounted on the inner cylinder face of the main body in a surrounding manner through the pressing plates, the cylindrical cavities are formed between the two adjacent pressing plates on the inner cylinder face of the main body, the number of the cylindrical cavities is equal to that of the pressing plates, the driving parts are arranged in the cylindrical cavities, through extension and shortening of a piezoelectric ceramic driver, acting on a thrust hemi sphere is achieved, the thin film plane is pushed to radially move, a base bloc