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Tilting pad bearing capable of actively controlling radial clearance

A radial clearance and active control technology, applied in the direction of rotating bearings, sliding contact bearings, bearings, etc., can solve the problems that the tilting pad bearings cannot guarantee the best working condition and keep it unchanged, so as to suppress the vibration of the journal , Improve the rotation accuracy and the effect of high motion sensitivity

Active Publication Date: 2021-11-19
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the average value of the oil film thickness remains basically unchanged, and since the average value of the oil film thickness determines the oil film pressure on each bearing pad, it cannot ensure that the tilting pad bearing remains in the best working condition

Method used

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  • Tilting pad bearing capable of actively controlling radial clearance
  • Tilting pad bearing capable of actively controlling radial clearance
  • Tilting pad bearing capable of actively controlling radial clearance

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Embodiment Construction

[0025] In order to further elaborate the technical means and effects that the present invention adopts for reaching the intended invention purpose, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the present invention are described in detail as follows:

[0026] A tilting pad bearing with actively controlled radial clearance, such as Figure 1 to Figure 6 As shown, it includes a bearing 1 and a journal 2 matched with the bearing 1 . The bearing 1 includes a body 11 , a flexible hinge bearing bush 12 , a thrust hemisphere 13 , a piezoelectric ceramic driver 14 , bolts 15 and a cover plate 16 . Among them, there are five bearing bush cavities 1116 in the body 11 along the circumferential direction, and the five flexible hinge bearing bushes 12 are evenly placed in the five bearing bush cavities 1116 of the body 11, and are positioned and fixed by the fixed end 126; the body 11 is furthe...

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Abstract

The invention discloses a tilting pad bearing capable of actively controlling a radial clearance through a piezoelectric ceramic driver, and relates to the technical field of fluid dynamic pressure bearings. The tilting pad bearing comprises a bearing and a journal matched with the bearing, wherein the bearing comprises a body, flexible hinge bearing bushes, a thrust hemisphere, the piezoelectric ceramic driver, a bolt and a cover plate; each flexible hinge bearing bush comprises a movable platform, a bearing bush curved table and two fixed ends; at least three bearing bush cavities are formed in the body in the circumferential direction, and the at least three flexible hinge bearing bushes are uniformly placed in the bearing bush cavities and are positioned and fixed through the fixed ends of the flexible hinge bearing bushes; at least three cylindrical cavities which communicate with the bearing bush cavities and are uniformly arranged are further formed in the body, and the piezoelectric ceramic driver is arranged in the cylindrical cavities; and the movable platforms are driven to move in the radial direction by controlling the extension or contraction of the piezoelectric ceramic driver, then the bearing bush curved tables are driven to generate radial movement, and the active control over the size of an oil film clearance can be realized.

Description

technical field [0001] The invention relates to the technical field of fluid dynamic pressure bearings, in particular to a tilting pad bearing which actively controls the radial clearance. Background technique [0002] The bearing bush of the tilting pad bearing is generally composed of 3-5 pads. The pads are arc-shaped and can swing freely with the change of speed, load and bearing oil temperature, so that the pads can be automatically adjusted to form an oil wedge. best position. The oil film pressure that each pad acts on the journal always leads to the center of the journal, which eliminates the force source that causes the vortex of the journal, so as to ensure better stability of the bearing. In addition, the tilting pad bearing also has the advantages of large load capacity, less frictional power consumption, and the ability to bear radial loads in all directions. It can be used in a variety of working conditions with different requirements, and has broad applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C17/03F16C27/02
CPCF16C17/03F16C27/02Y02E10/20
Inventor 张永涛杨泽史伟杰赵海霞
Owner QINGDAO UNIV OF SCI & TECH