Measuring apparatus of foil dynamic pressure air bearing resistance torque

Abstract

The invention discloses a measuring apparatus of a foil dynamic pressure air bearing resistance torque. The apparatus comprises a foil dynamic pressure air bearing, a bearing pedestal, a rotating shaft, an arm stem, an adjusting rod, a load detector, ropes, a fixed pulley and a weight. The foil dynamic pressure air bearing is arranged on the bearing pedestal. The rotating shaft is driven by outside power. When a rotating speed of the rotating shaft reaches a working rotating speed of the foil dynamic pressure air bearing, the foil dynamic pressure air bearing and the bearing pedestal are suspended above the rotating shaft. In the invention, the foil dynamic pressure air bearing and the bearing pedestal are as a whole suspended above the rotating shaft, which substitutes a traditional structure of the rotating shaft suspension. Therefore, the measuring apparatus of the foil dynamic pressure air bearing resistance torque can convert moment into a tensile force without influencing normal operation of the bearing. Measurement is simple. And the measuring apparatus of the foil dynamic pressure air bearing resistance torque provided in the invention has a simple structure, a high reliability and a high precision measurement.

Description

technical field [0001] The invention belongs to the field of air bearing experiment testing, and in particular relates to a device for measuring the resistance distance of a foil dynamic pressure air bearing. Background technique [0002] With the rapid development of science and technology, rotating machinery has higher and higher requirements for high speed, high precision and high stability. Naturally, the requirements for bearings, one of the core components of rotating machinery, are also getting higher and higher. Foil dynamic pressure air bearing is a new type of dynamic pressure air bearing. Compared with the traditional rigid surface bearing, it has the outstanding advantages of high speed, good stability and long life. However, since the theoretical model of the foil dynamic pressure air bearing is not perfect, the design of the foil dynamic pressure air bearing cannot be completely relied on calculation simulation, so the experimental measurement of various param...

AI Technical Summary

Problems solved by technology

Due to the traditional way of fixing the bearing seat, it is difficult to measure the bearing drag distance

And when applying load to the bearing, in order not to affect the accuracy of the bearing data measurement, a non-contact loading method must be used, such as electromagnet loading, which not only increases the cost of the test bench but also complicates the structure of the test bench

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