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Elastic supporting structure

An elastic support and elastic technology, applied in the field of elastic support, can solve problems such as complex assembly and easy deformation, and achieve the effect of ensuring reliability

Inactive Publication Date: 2012-04-25
CHINA AVIATION POWER MACHINE INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an elastic support structure to solve the technical problems of the existing elastic support structure, complex assembly and easy deformation

Method used

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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0021] The elastic support structure of the preferred embodiment of the present invention is mainly used for vibration reduction of the rotor of the aero-engine when it runs at high speed. The elastic support structure is installed on the casing of the aero-engine, and the rotor bearing is installed on the bearing loading seat of the elastic support structure Inside.

[0022] see figure 1 with figure 2 , the elastic supporting structure of the present invention is a cylindrical barrel, which is installed on the casing 7 of the aero-engine. The elastic supporting structure includes a supporting body 1 , and the supporting body 1 includes a bearing mounting seat 2 and a plurality of elastic cage bars 3 . When the elastic support structure is insta...

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Abstract

The invention provides an elastic supporting structure. The elastic supporting structure comprises a cylindrical supporting body (1); the supporting body (1) is arranged on a machine case (7); the supporting body (1) comprises a bearing loading seat (2) and a plurality of elastic cage bars (3); a gap is formed between the circumferential outer wall of the bearing loading seat (2) and the machine case (7), and lubricating oil is filled in the gap so as to form an extrusion oil film damper; and the circumferential outer wall of the bearing loading seat (2) is an oil film shaft neck (4) of the extrusion oil film damper. The elastic supporting structure has a supporting structure that the elastic cage bars are combined with the extrusion oil film damper, the extrusion oil film damper has the vibration reduction function, the deformation of elastic supporting can be reduced and limited, and the reliability of the structure is greatly guaranteed; and the elastic cage bars have the function of adjusting the critical speed of a rotor system.

Description

technical field [0001] The invention relates to the field of elastic support, in particular to an elastic support structure. Background technique [0002] The operating speed of modern aero-engines is generally above 10,000r / min, and the operating speed of some small engines is as high as 40,000-50,000r / min. Rotating speed. It is often very difficult to adjust the critical speed by changing the rotor structure (shaft diameter, fulcrum distance, etc.). [0003] At present, the elastic support structures mainly include cage-type elastic support structures and elastic ring-type elastic support structures, and the cage-type elastic support structures are further divided into squirrel-cage elastic support structures and tie rod-type elastic support structures. In practical application, it is necessary to determine the type and stiffness of the elastic support structure, which is a comprehensive evaluation process of experience, calculation and test. [0004] Compared with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/04
CPCF16C19/06F16C27/04
Inventor 王宇星
Owner CHINA AVIATION POWER MACHINE INST
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