Kinetic pressure bearing

Abstract

The invention belongs to the field of mechanical processing, in particular to a hydrodynamic bearing, which comprises a rotating shaft and a shaft sleeve, wherein a wedge oil cavity is arranged between the rotating shaft and the shaft sleeve. The hydrodynamic bearing is characterized in that a central oil hole is arranged on the axis of the rotating shaft, a vertical oil hole which is vertical to the axis is arranged on a position where the rotating shaft corresponds to the wedge oil cavity, the vertical oil hole is communicated with the central oil, a rotating oil pipe is arranged on a position of the central oil hole which is arranged on one end of the rotating shaft, the rotating oil pipe is arranged in a fixed oil pipe, and a sealing ring is arranged on the middle portion. Pressure oil of the invention enters the central oil hole from the fixed oil pipe through the rotating oil pipe, and then enters into the oil cavity through the vertical oil hole. When the rotating shaft rotates, because the action of centrifugal force, the pressure oil is hurled to the oil cavity from the central oil hole through the vertical oil hole, thereby being capable of guaranteeing that the oil cavity steadily supplies oil in a high speed state, the oil mass of the oil cavity of the hydrodynamic bearing is steady, and the vibration of the hydrodynamic bearing is small.

Description

Technical field [0001] The invention belongs to the category of mechanical manufacturing, and specifically is a dynamic pressure bearing. Background technique [0002] The dynamic pressure bearing uses hydraulic oil to be compressed in the wedge-shaped oil cavity between the rotating shaft and the bearing sleeve to generate pressure. The faster the rotating shaft, the greater the hydraulic oil pressure, and the oil in the existing oil cavity is directly from It enters between the rotating shaft and the bearing sleeve. When the rotating shaft rotates at a high speed, the oil is easily thrown out of the oil cavity due to the centrifugal force of this kind of dynamic pressure bearing, which will cause insufficient oil in the oil cavity and cause the bearing to vibrate. Summary of the invention [0003] The purpose of the present invention is to address the shortcomings of the prior art and provide a more reasonable structure of a dynamic pressure bearing that uses oil supply in the...

AI Technical Summary

Problems solved by technology

[0002] The dynamic pressure bearing uses the hydraulic oil to be compressed in the wedge-shaped oil chamber between the rotating shaft and the bearing sleeve to generate pressure. The faster the rotating shaft rotates, the greater the pressure of the hydraulic oil, while the oil in the existing oil chamber is directly from the It enters between the rotating shaft and the bearing sleeve. When the rotating shaft rotates at high speed, the oil is easily thrown out of the oil chamber due to the centrifugal force when the rotating shaft rotates at high speed, which will cause insufficient oil in the oil chamber and cause the bearing to vibrate.

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