Driving device with dynamic bearing and method of injection of lubricant thereof

• Main Authors: LIU, SHU-JUAN, ZHANG, ZHEN-HUI, LIN, DA-YU, WU, WEN-JIE, QIU, GUAN-ZHI
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2011
• 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 present invention provides a driving device with a dynamic bearing, which includes a rotor; a stator surrounding the rotor; a front cover and a seal cover installed on the two ends of stator, in which the front cover and the seal cover separately include a front dynamic bearing and a rear dynamic bearing, in which the two ends of rotor are installed on the front cover and the rear cover, a rear cover is covered behind the sear cover; and a stop member installed on one end of the rotor and located between the seal cover and the rear cover, in which the assemblies between the rotor and front cover, between the rotor and the seal cover, and between the stop member and the seal cover, are lubricated. By forming the front cover, seal cover and dynamic bearing into an integral assembly, the number of components used and accumulated tolerance during assembly can be reduced. The stop member is used to reduce the occurrence of axial movement for the rotor. Furthermore, the front cover and the rear cover are thereo