Archimedes spiral curved surface dynamic-pressure sliding bearing and application thereof

Abstract

The invention discloses an Archimedes spiral curved surface dynamic-pressure sliding bearing and application thereof. The sliding bearing includes a bearing body, and at least one Archimedes spiral curved surface is arranged on the inner wall of the bearing body in the peripheral direction, and used for forming a bearing lubricating oil cavity; the maximum cutting-in depth portion of the top of the Archimedes spiral curved surface is provided with an oil inlet, and the maximum cutting-in depth portion, close to the end face of the bearing body, of the bottom of the Archimedes spiral curved surface is provided with an oil outlet. According to the Archimedes spiral curved surface dynamic-pressure sliding bearing and the application thereof, an existing sliding bearing structure is referred to, and in combination with the practical application background, a novel oil cavity structure which is the oil cavity formed by the Archimedes spiral curved surface is provided; therefore, the circulation of lubricating oil can be effectively speeded up, the heating of the bearing can be reduced, and the temperature rise of the bearing can be reduced; meanwhile, the bearing has a large effective load area and is suitable for high-speed heavy-load occasions.

Description

technical field [0001] The invention relates to the field of rotating machinery, such as a high-speed machine tool spindle system, a high-speed rotor system, etc., and particularly relates to an Archimedes helical surface dynamic pressure sliding bearing and its application. Background technique [0002] Sliding bearings have the advantages of stable operation and good vibration resistance, and are widely used in rotating machinery. However, with the continuous increase in the speed of rotating machinery, the temperature rise of sliding bearings has become the main obstacle restricting its application. Therefore, in many occasions, there is a tendency to be replaced by rolling bearings. However, in some important occasions, such as the spindle of a powerful cutting machine tool, the rotor of a water turbine, the connecting rod of an internal combustion engine, etc., sliding bearings still have irreplaceable advantages. How to reduce the heating and temperature rise of slidi...

AI Technical Summary

Problems solved by technology

However, they generally have the disadvantages of complex structures or processes, the circulation of lubricating oil cannot be optimal, and there are still certain defects in reducing the bearing temperature, and they still cannot meet the requirements for high-speed and high-vibration environments.

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