A Radial Bearing with Electromagnetic-Static Double Support

Abstract

Provided is an electromagnetism-static pressure double suspension supporting transverse bearing. A hydrostatic pressure supporting system of the electromagnetism-static pressure double suspension supporting transverse bearing comprises a rotor shaft, a bearing base, a bearing upper cover and a stator. The stator is arranged in the bearing upper cover and the bearing base, and the outer circumferential surface of the stator corresponds to the bearing upper cover and the bearing base. Eight poles which are evenly distributed in the radial direction are arranged on the circumference surface in the stator. The length of the circumference direction cambered surface of the centripetal free end surface of each pole is larger than the length of the cambered surface of the other section of the pole, and the space between the centripetal free end surfaces of every two adjacent poles is larger than or equal to the thickness of enameled wire rings. A static pressure supporting cavity is arranged on the centripetal free end surface of each pole. A radial oil inlet hole A is formed in the end surface of the middle of each groove. A radial oil returning hole A is formed in the base body between every two poles. The centripetal free end surfaces of the eight poles are connected with the rotor shaft through concentrating flux sleeves. Each pole of the stator is sleeved with one enameled wire ring. The eight poles are distributed by adopting an NSSNNSSN way. According to the electromagnetism-static pressure double suspension supporting transverse bearing, the bearing capacity and the rigidity of the bearing can be improved substantially, and the adjusting capacity and the precision of the bearing system can be improved.

Description

technical field [0001] The invention relates to a sliding bearing. Background technique [0002] Hydrostatic bearings have the advantages of good radial stiffness, high positioning accuracy, and good vibration resistance, so they have been widely valued and widely used. With the development of the global industry, but in the occasion of high power, heavy load and high speed operation, the friction power of the hydrostatic bearing is very large, and it is easy to cause the bearing to have a large thermal deformation due to excessive temperature. The so-called magnetic bearing is a bearing that uses magnetic attraction and repulsion to support the rotation, also called magnetic suspension bearing. Its advantages are small torque, good for high-speed rotation, can be used in vacuum, wide applicable temperature range, low noise, long life, no pollution caused by lubrication, etc.; disadvantages are high cost and relatively low carrying capacity. Contents of the invention [...

AI Technical Summary

Problems solved by technology

Its advantages are small torque, good for high-speed rotation, can be used in vacuum, wide range of applicable temperature, low noise, long life, no pollution caused by lubrication, etc.; disadvantages are high cost and relatively low carrying capacity

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