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Test device for testing performance of compliant foil gas journal bearing

A technology of radial bearings and elastic foils, which is applied in the field of test devices for testing the performance of elastic foil gas radial bearings, can solve the problems of static and dynamic performance test devices for gas radial bearings without elastic foils, and achieve test Comprehensive functions, convenient assembly and disassembly, and high test accuracy

Inactive Publication Date: 2010-10-20
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Although some methods for testing the performance of elastic foil gas radial bearings have been given in the literature, there is no test device that can comprehensively test the static and dynamic performance of elastic foil gas radial bearings.

Method used

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  • Test device for testing performance of compliant foil gas journal bearing
  • Test device for testing performance of compliant foil gas journal bearing
  • Test device for testing performance of compliant foil gas journal bearing

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Experimental program
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Embodiment Construction

[0017] The structural principle and working principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] see figure 1 , figure 2 , image 3 and Figure 4 , a test device for testing the performance of an elastic foil gas radial bearing, comprising an asynchronous motor 1 with a frequency converter, the asynchronous motor 1 is connected to one end of a test rotor 3 through a high-speed flexible coupling 2, and the test rotor 3 has a symmetrical structure, Supported by two identical high-speed angular contact ball bearings 4, one side of the high-speed angular contact ball bearing 4 is equipped with an oil deflector ring 10, a pre-tightening spring 11, an end cover gasket 12 and a pre-tightening end cover 13, and the pre-tightening end cover is used The bolt 14 is fixed on the bearing seat 5. The high-speed angular contact ball bearing 4 is preloaded by the preload spring 11. The preload can be adjusted by the e...

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Abstract

The invention relates to a test device for testing the performance of a compliant foil gas journal bearing, which comprises an asynchronous motor with a frequency converter, wherein the asynchronous motor is connected with a test rotor, and one end of the test rotor is provided with a neck journal; the outer side of the neck journal is provided with a bearing holder, and the tested compliant foil gas journal bearing is arranged in the bearing holder; a hanging ring is arranged on the bearing holder, and one end of a static force loading device is connected with the hanging ring through a rope; a weight is hung at the other end of the static force loading device, and a vibration exciter is connected with the bearing holder; and a sensor probe is arranged on a sensor support. The test rotor and the neck journal are driven by the asynchronous motor, and the compliant foil gas journal bearing is contacted with the neck journal at the beginning; when the rotary speed of the neck journal reaches the takeoff rotary speed of the compliant foil gas journal bearing, the compliant foil gas journal bearing is not contacted with the neck journal; the tested signals are transmitted into a computer by a sensor to be processed, so that a series of static and dynamic performances of the bearing are obtained. The invention has the characteristics of full test functions, convenient assembly and disassembly of the tested bearing, achievable performance tests of series bearings and high test precision.

Description

technical field [0001] The invention relates to the technical field of performance testing of bearings, in particular to a test device for testing the performance of elastic foil gas radial bearings. Background technique [0002] The static and dynamic performance of the elastic foil gas bearing is of great significance for the performance evaluation of the bearing and the stability judgment of the shaft system. At present, the static and dynamic performance of elastic foil gas bearings are mainly obtained through theoretical calculation and numerical simulation, while experimental verification is relatively lacking. [0003] The performance test of the elastic foil gas radial bearing is mainly to test the static performance such as bearing capacity, dynamic stiffness and damping coefficient. Although some schemes for testing the performance of elastic foil gas radial bearings are given in the literature, there is no test device that can comprehensively test the static and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04
Inventor 戚社苗段文博杨柏松耿海鹏虞烈孙岩桦
Owner XI AN JIAOTONG UNIV
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