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Dynamic pressure gas thrust ceramic bearing

A ceramic bearing and gas technology, applied in sliding contact bearings, rotary bearings, bearings, etc., can solve the problems of difficult practical application and complex processing technology, and achieve easy industrialization, low economic cost, and strong practicability. Effect

Active Publication Date: 2011-11-30
罗立峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the tilting pad and foil dynamic pressure gas thrust bearings have good stability, the processing technology is relatively complicated, and there are still some difficulties in practical application at present.

Method used

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  • Dynamic pressure gas thrust ceramic bearing
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  • Dynamic pressure gas thrust ceramic bearing

Examples

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Embodiment Construction

[0019] like Figure 1-2 As shown, a dynamic pressure gas thrust ceramic bearing includes two outer discs 1 and inner discs 2 with clearance fit, wherein the inner disc 2 is sandwiched between the two outer discs 1, and the fit clearance between the inner disc 2 and the outer disc 1 is 0.001 to 0.008 mm. Both ends of the inner disc 2 are provided with regular-shaped groove patterns, which form a wedge-shaped space between the outer disc 1 and the inner disc 2. When the inner disc 2 rotates relative to the outer disc 1, the gas is driven due to its own viscosity. And be compressed into the wedge-shaped gap, thereby generating dynamic pressure to support the inner disk 2 to rotate. The groove patterns at both ends of the inner disk 2 are arranged symmetrically, and the groove patterns are evenly arranged in the shape of an impeller, and each groove 21 extends from the inner circle of the inner disk 2 to the outer circle. The dynamic pressure gas thrust ceramic bearing is fixedl...

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Abstract

The invention discloses a dynamic pressure gas thrust ceramic bearing, which comprises two outer discs and an inner disc in clearance fit, wherein the inner disc is clamped between the two outer discs. Two ends of the outer discs are provided with high-precision planes, and two ends of the inner disc are provided with groove-type patterns. The groove-type patterns are uniformly distributed in an impeller type so as to form a wedge-shaped space between the outer discs and the inner disc. Each groove is formed by extending an inner circle of the inner disc to an outer circle. The groove-type patterns at both ends of the inner disc are arranged symmetrically. The dynamic pressure gas thrust ceramic bearing is fixedly arranged on a high-speed rotating shaft through the inner disc, the two outer discs are fixedly arranged on a bearing seat, and the continuously generated dynamic pressure gas can be well kept in the fit clearance of the outer discs and the inner disc under the drive of the high-speed rotating shaft to form an air film required for supporting the axial positioning, namely thrust function of the high-speed rotating shaft, so that the functions of the dynamic pressure gas thrust ceramic bearing with certain stability and load capability are realized.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to dynamic pressure gas thrust bearings. Background technique [0002] Bearings can be divided into rolling bearings (using balls or rollers), oil-free bearings (using lubricating materials for friction), sliding bearings (using oil), gas bearings, and magnetic bearings (using magnetic force for non-contact action). Sliding bearings are further divided into hydrodynamic bearings and hydrostatic bearings, in which hydrodynamic bearings support the shaft by generating oil pressure through relative sliding motion; hydrostatic bearings support the shaft through high-pressure oil provided outside the bearing of. Gas bearings operate on the same principle as plain bearings except that gas is used instead of oil. The static pressure gas bearing is provided with pressurized gas from the outside; while the dynamic pressure gas bearing is relatively sliding to generate pressure. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/08F16C33/02
Inventor 罗立峰
Owner 罗立峰
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