Device for testing elastic foil tablet transverse bearing departure rotary speed

A technology of radial bearings and elastic foils, which is applied in the field of devices for testing the take-off speed of elastic foil radial bearings, and can solve the problem of not giving the take-off speed

Inactive Publication Date: 2008-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the performance test of the elastic foil bearing is mainly to carry out the test experiment of the load capacity and the dynamic characteristic coefficient. Although some literatures mention that the bearing parameters and working conditions have an influence on the bearing take-off speed, there is no test device for the take-off speed. and identification method

Method used

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  • Device for testing elastic foil tablet transverse bearing departure rotary speed
  • Device for testing elastic foil tablet transverse bearing departure rotary speed
  • Device for testing elastic foil tablet transverse bearing departure rotary speed

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Embodiment Construction

[0014] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] Referring to Fig. 1, the structure of the tested radial bearing 13 is as follows: including the test bearing housing 19 and the bearing foil 22, the bearing foil 22 is composed of five top layer foils 20 and arch corrugated foils 21, and the five top layer foils 20 One end of the arched wave foil 21 is welded on the test bearing seat 19 and evenly distributed along the inner wall surface of the test bearing seat 19, and the other end is free. The smooth top layer foil 20 forms an arc surface under the action of pre-tightening force, The working surface of the bearing is provided, and the arched corrugated foil 21 provides elastic support for the top foil 20, and the journal 7 rotates in the direction from the welding end to the free end during operation.

[0016] Referring to Fig. 2, Fig. 3 and Fig. 4, ...

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Abstract

The invention relates to a device for measuring the takeoff rotating speed of the elastic foil radial bearing, which comprises a drive system, a shaft journal part and a lubricating system, and a data acquisition system; the drive system is composed of an asynchronous motor and a frequency converter; the asynchronous motor is connected with one end of the shaft journal through a high-speed flexible shaft coupling; the shaft journal utilizes two rolling bearing holders to implement lubrication on the rolling bearing through an oil gas lubricating coupler; the data acquisition system is composed of a sensor, an amplifier and a computer; the data measured by the sensor can be collected by an acquisition card and be input in the computer for storage; the rotor is driven by a motor; the static load of the bearing can be changed by a charger, thereby the takeoff rotating speed of the foil bearing in different loads can be measured.

Description

technical field [0001] The invention relates to the technical field of performance testing of bearings, in particular to a device for testing the take-off speed of elastic foil radial bearings. Background technique [0002] The take-off speed is a sign of complete gas lubrication between the journal surface and the working surface of the gas bearing, and is also one of the important indicators of the dynamic pressure gas bearing. At present, the performance test of the elastic foil bearing is mainly to carry out the test experiment of the load capacity and the dynamic characteristic coefficient. Although some literatures mention that the bearing parameters and working conditions have an influence on the bearing take-off speed, there is no test device for the take-off speed. and identification methods. Some existing documents describe in detail the test method for the take-off speed of oil film hydrostatic radial bearings, such as: "On the lift-off speed in journal bearings"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01P3/00G01P3/24G01P3/44
Inventor 杨利花耿海鹏戚社苗刘恒虞烈
Owner XI AN JIAOTONG UNIV
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