Dynamic and static pressure ceramic sliding bearing lubricated by water or water-based lubricating liquid

Abstract

The invention discloses a dynamic and static pressure ceramic sliding bearing lubricated by water or water-based lubricating liquid, which comprises a bearing sleeve, wherein a flange is arranged at one end of the bearing sleeve, and external threads are arranged at the other end of the bearing sleeve; a ceramic shaft sleeve is assembled at the outer layer of the bearing sleeve; a ceramic shaft bushing which comprises a special liquid cavity and a liquid hole structure is arranged outside the ceramic shaft sleeve; a shaft bushing sleeve with the special liquid cavity and the liquid hole structure is assembled at the outer layer of the ceramic shaft bushing; and the bearing of the invention also comprises a bearing end cover, wherein a ceramic ring is assembled at the inner end of the bearing end cover, and internal threads matched with the external threads of the bearing sleeve are arranged on the inner ring of the bearing end cover. The bearing of the invention can improve the wear resistance and the corrosion resistance, can operate in the poor water condition where sandy solid particles are contained, can be lubricated by the water-based lubricating liquid formed by adding other additives into water or water-based liquid; at the same time, the bearing has larger carrying capacity and rigidity, and can ensure a safe and stable operating state, thereby greatly prolonging the operation life.

Description

technical field [0001] The invention relates to a sliding bearing, in particular to a sliding bearing using water or water-based lubricating fluid as a lubricant and adopting a dynamic and static pressure mixed lubrication method. Background technique [0002] For machines that work in water for a long time, the use of water-lubricated bearings has unique advantages, such as reducing water pollution caused by oil leakage and saving energy consumption. But to existing various water-lubricated bearings, its manufacture material all has its defect respectively. Bearings made of metal materials will inevitably corrode under water lubrication conditions, which will directly affect their life and performance. Rubber bearings have low strength and hardness, poor wear resistance and water resistance, so their life is very short. The inherent disadvantage of bearings filled with nylon materials is that they have strong water absorption, and the material will become soft under long-...

AI Technical Summary

Problems solved by technology

In this invention, the ceramic materials of the friction pair are coatings prepared by methods such as chemical vapor deposition, physical vapor deposition, spraying, etc., which greatly increases the difficulty of manufacturing; at the same time, the thickness of the ceramic coating must be smaller than that of a single ceramic component. It is difficult to carry out large-scale trimming during the process, and it is difficult to replace the parts after large wear and tear, and the coating can only be prepared again, so its service life is not high

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