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Hybrid type dynamic pressure gas journal bearing

A radial bearing and hybrid technology, applied in sliding contact bearings, rotating bearings, bearings, etc., can solve problems such as insufficient load capacity, insufficient impact resistance, and inability to achieve high-speed operation, and achieve high impact resistance. The effect of capacity and load capacity

Active Publication Date: 2015-12-30
罗立峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high rigidity of the groove-type dynamic pressure gas radial bearing, its impact resistance is not good enough and its load capacity is not large enough to achieve high-speed operation under a large load.

Method used

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  • Hybrid type dynamic pressure gas journal bearing
  • Hybrid type dynamic pressure gas journal bearing
  • Hybrid type dynamic pressure gas journal bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like figure 1 and image 3 Shown: a hybrid dynamic pressure gas radial bearing provided in this embodiment includes: a bearing outer sleeve 1 and a bearing inner sleeve 2, the outer circumferential surface and the left and right end surfaces of the bearing inner sleeve 2 have regular shapes. The grooves (21, 22 and 23 in the figure, the grooves in this embodiment are all in the shape of an impeller), and the grooves 22 on the left end face and the grooves 23 on the right end face form mirror symmetry.

[0043] combine Figure 1 to Figure 4 Shown: the axial contour line of the groove pattern 21 on the outer circumferential surface of the bearing inner sleeve 2 and the radial contour lines of the groove pattern (22 and 23) on the left and right end faces form a one-to-one correspondence and intersect with each other That is: the axial high-order line 211 in the groove pattern 21 on the outer circumferential surface corresponds to the radial high-order line (221 and 231)...

Embodiment 2

[0051] like Figure 8 As shown, the difference between a hybrid dynamic pressure gas radial bearing provided in this embodiment and Embodiment 1 is only that the foil-type elastic member 3 is composed of a corrugated foil 31 and a flat foil 32, and the corrugated foil 31 is composed of a The top end of the arc-shaped protrusion 311 is in contact with the inner circumferential wall of the bearing housing 1 , and the transition bottom edge 312 between the wave arches of the corrugated foil 31 is in contact with the flat foil 32 .

[0052] Figure 9 A schematic diagram of the structure of the corrugated foil 31 is shown.

Embodiment 3

[0054] like Figure 10 and 11 As shown, the difference between the hybrid dynamic pressure gas radial bearing provided in this embodiment and the embodiment 1 is only that the foil elastic member 3 is composed of a flat foil 32 and a flat foil 33 provided with a through hole 331 .

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Abstract

The invention discloses a hybrid type dynamic pressure gas journal bearing. The hybrid type dynamic pressure gas journal bearing comprises a bearing outer cover, an inner cover and a foil type elastic piece arranged between the bearing outer cover and the inner cover. The outer circumferential face and the two end faces of the inner sleeve of the bearing are each provided with groove type patterns of the regular shapes. The groove type patterns of one end face are in mirror symmetry with the groove type patterns on the other end face. The axial contour lines of the groove type patterns on the outer circumferential face correspond to the radial contour lines of the groove type patterns on the two end faces one to one. The axial contour lines and the radial contour lines are connected. The hybrid type dynamic pressure gas journal bearing has the rigid characteristic of the high limit speed of a groove type dynamic pressure gas journal bearing and has the flexible characteristics of the high impact resistance and the high loading capacity of a foil type dynamic pressure gas journal bearing, and the hybrid type dynamic pressure gas journal bearing can be applied in the ultrahigh-speed field of large loads.

Description

technical field [0001] The present invention relates to a dynamic pressure gas radial bearing, in particular, to a high-speed dynamic pressure gas radial bearing with both the rigid feature of high limit rotational speed of a groove type dynamic pressure gas radial bearing and a foil type dynamic pressure gas radial bearing. The invention relates to a hybrid dynamic pressure gas radial bearing with flexible features of impact resistance and load capacity, belonging to the technical field of gas bearings. Background technique [0002] Gas bearings have the advantages of high speed, high precision, high temperature resistance, low friction loss and long life. After rapid development in recent decades, gas bearings have been widely used in high-speed support, high-precision support and other fields. At present, various types of gas bearings have been developed, mainly divided into dynamic pressure type and static pressure type. [0003] The dynamic pressure gas bearing uses ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C27/02F16C17/02
Inventor 罗立峰
Owner 罗立峰
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