A Dovetail Structure Aerodynamic Radial Foil Bearing with Forward and Reverse Rotation

An air dynamic pressure, foil bearing technology, applied in the direction of rotating motion bearings, sliding contact bearings, bearings, etc., can solve the problems of rotation assembly error, shaft failure stability, etc., and achieve the effect of improving stability

Active Publication Date: 2022-07-19
宙斯能源动力科技(大连)有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention proposes a dovetail-shaped air dynamic pressure radial foil bearing with positive and negative rotation directions to solve the problem that the rotation direction of the existing air dynamic pressure foil bearing is unidirectional when the bearing is installed. Mistakes can easily lead to shafting failure and existing aerodynamic foil bearings have poor operational stability

Method used

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  • A Dovetail Structure Aerodynamic Radial Foil Bearing with Forward and Reverse Rotation
  • A Dovetail Structure Aerodynamic Radial Foil Bearing with Forward and Reverse Rotation
  • A Dovetail Structure Aerodynamic Radial Foil Bearing with Forward and Reverse Rotation

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Embodiment Construction

[0032] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and technical solutions.

[0033] An elliptical pad aerodynamic radial foil bearing with forward and reverse rotation directions, comprising a bearing sleeve 1; a corrugated foil 2; a top foil 3;

[0034]The bearing sleeve 1 is a hollow cylinder for fixing the corrugated foil 2 and the top foil 3, and one or two opposite or three dovetail structures 4 with an angle of 120 degrees can be opened on the bearing sleeve 1. (The top foil 3 and corrugated foil 2 used when there is only one dovetail groove are circumferential, as shown in the Image 6 (a), with Figure 7 As shown in (a), when the opposite dovetail groove 4 is used, the top foil 3 and the corrugated foil 2 used are double-lobed separated, as shown in the appendix of the specification. Image 6 (b), with Figure 7 As shown in (b), the top foil 3 and the corrugated foil 2 used when the d...

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Abstract

A dovetail-shaped structure aerodynamic radial foil bearing with forward and reverse rotation directions belongs to the technical field of air bearings. In order to solve the problem that the rotation direction of the existing aerodynamic foil bearing is unidirectional, the rotation occurs when the bearing is installed. Incorrect assembly can easily lead to shaft failure, and the existing aerodynamic foil bearing has the problem of poor operating stability. Technical points: At least one dovetail-shaped structure runs through the inner wall of the bearing sleeve along its axial direction, and the top foil is fixed by inserting the top foil into the dovetail-shaped structure. The dovetail-shaped structure is: the middle part is a dovetail-shaped protrusion. The dovetail-shaped projection is symmetrically provided with two elongated slots on both sides that allow the top foil to be inserted. By reducing the cross stiffness of the bearing during operation, the stability of the bearing during operation can be effectively improved, and since both ends of the top foil are inserted into the elongated grooves on both sides of the dovetail structure at the same time, and the bottom of the top foil passes through The corrugated foil is fixed by welding, so that the bearing can be applied to the forward and reverse directions of the rotor.

Description

technical field [0001] The invention belongs to the technical field of air bearings, and in particular relates to a dovetail structure air dynamic pressure radial foil bearing with forward and reverse rotation directions. Background technique [0002] With the continuous development of modern science and technology, the role of high-speed rotating machinery in the fields of national defense, metallurgy, aviation, and automobiles has been continuously enhanced. As an indispensable part of high-speed rotating machinery, the research on bearings is also increasing. Gas foil bearings have been widely used because they use gas as a lubricant, which has the advantages of extremely small friction power consumption, high rotation accuracy, no pollution, simple structure, and strong adaptability to high speed. However, with the increase of rotating speed requirements of rotating machinery, the traditional aerodynamic radial foil bearing is limited by its circular pad structure, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C17/02
CPCF16C17/024
Inventor 徐方程董泽达
Owner 宙斯能源动力科技(大连)有限公司
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