Auto-excitation type oil mist jet lubrication high-speed bearing, lubricating method and application

Abstract

The invention discloses an auto-excitation type oil mist jet lubrication high-speed bearing, a lubricating method and an application on a motor. The high-speed bearing comprises an outer ring sleeve and an inner ring body, two ends of the outer ring sleeve are connected with the inner ring body through non-contact type sealing assemblies, an oil storage space and a retainer are arranged between the outer ring sleeve and the inner ring body, the oil storage space and the retainer are located between the two sealing assemblies, a rolling body is arranged on the retainer, and the oil storage space corresponds to one side, provided with the rolling body, on the retainer. The auto-excitation type oil mist jet lubrication high-speed bearing, the lubricating method and the application have the advantages that the structure of the bearing is simple, the high-speed and ultra-high-speed operating life of the bearing is long, the formation of the lubricating system is simple, the lubricating oilconsumption is low, and compressed air is not needed; through reasonable design of the bearing internal structure, high-speed thin oil lubrication of horizontal working conditions, vertical working conditions and inclined working conditions can be achieved, and large axial loads and radial loads can be borne. The bearing is arranged on the two sides of a rotor of the motor, so that the rotating speed of the motor is improved on the premise that a complex lubricating system is not used and a large amount of lubricating oil is not consumed.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a self-excited oil mist jet lubricated high-speed bearing, a lubricating method and an application thereof. Background technique [0002] When the rolling bearing is running at high speed, the friction and collision between the rolling elements and the raceway, the contact and friction between the rolling elements and the cage, and the viscous resistance of the lubricant will generally generate a large amount of heat, which will increase the temperature of the contact parts , causing thermal deformation, which directly reduces the working accuracy of the bearing; in severe cases, it even leads to thermal seizure of the bearing, resulting in damage to the bearing. A proper lubrication system must be used to reduce friction. [0003] It is generally believed that the choice of lubrication method for high-speed rolling bearings is related to the bearing speed, load, allowable temp...

AI Technical Summary

Problems solved by technology

Therefore, until now, the rotor bearing still retains many structural features, lubrication concepts and maintenance habits suitable for grease lubricated bearings, and cannot fully adapt to thin oil lubrication.

[0006] The existing double-row ball rotor bearings have the following problems: First, due to the limitations of structure, space position, transmission mode and rotor dynamics, it is difficult for the existing double-row ball rotor bearings to achieve a rotation speed of more than 110,000 rpm directly driven by a motor (d m n value ≥ 1.55×10 6 ); Second, because the internal structure of the existing double-row ball rotor bearing is only suitable for horizontal working conditions, the loss of thin oil is serious when it is used in vertical and inclined working conditions; thirdly, because the existing double-row ball rotor bearing adopts The deep groove ball method has limited axial bearing capacity and poor axial accuracy; fourth, the existing double-row ball rotor bearing lubrication theory is very confusing, resulting in long-term stagnation of related technologies

Images