Liquid dynamic pressure bearing

• Main Authors: YU SHIJIE, LIU ZHIYUAN, ZHANG YONGTAO, ZHANG JINGDAN
• Format: Patent
• Language: Chinese; English
• Published: 12.02.2021
• 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 a liquid dynamic pressure bearing, and relates to the technical field of bearings. The liquid dynamic pressure bearing comprises a bearing and a shaft neck matched with thebearing, the bearing comprises a body, and further comprises at least three pressing plates, and the pressing plates are evenly arranged on the inner cylindrical face of the body at intervals; the elastic film is arranged on the inner cylindrical surface of the body in a surrounding manner through a pressing plate; the cylindrical cavity is formed between two adjacent pressing plates on the innercylindrical surface of the body; and the number of the cylindrical cavities corresponds to that of the pressing plates. The piezoelectric ceramic driver is elongated and shortened to act on the thrust hemisphere to push the thin film plane to move in the radial direction, the semi-cylinders are further driven to move in the radial direction, active control over the size of the wedge-shaped gap Aand the size of the wedge-s