Bearing friction wear test device for realizing weight loading based on long cylindrical pin

Abstract

The invention discloses a bearing friction wear test device for realizing weight loading based on a long cylindrical pin. The device comprises a vacuum system and a loading system. The vacuum system provides a vacuum environment required by a friction wear test and a platform for placing a test sample, and the loading system provides a loading platform required by the friction wear test; the loading system comprises a loading mechanism and a lifting mechanism; the vacuum system comprises a vacuum tank, a friction wear mechanism, an air extractor, a bearing assembly and a loading assembly; and the air extractor is connected with the vacuum tank through an air extracting pipe, a wear device is arranged below the vacuum tank, the loading assembly is arranged above the vacuum tank, the lower surface of the loading mechanism is pressed on the loading assembly, and the test sample is connected to the part, extending into the vacuum tank, of the bearing assembly. The vacuum system and the loading system provided by the invention can be used for simulating a friction-wear test on the bearing in a space vacuum environment, and have a relatively high application value.

Description

technical field [0001] The invention relates to the field of bearing friction and wear tests, in particular to a bearing friction and wear test device based on long cylindrical pins to realize weight loading. Background technique [0002] With the development of aerospace technology, more and more aeronautical equipment is operating in a high vacuum environment (vacuum degree 10-5Pa ~ 10-7Pa order), vacuum environment conditions will bring special tribological problems. For example, lack of oxygen and other atmospheric reactants in the vacuum, the oxide film on the metal surface is quickly consumed and removed during the friction process, and it is difficult to form a new oxide film. Therefore, the friction surface is quickly in a "bare" state, and fresh metal Severe adhesion occurs due to direct contact between surfaces; there is no diffusion and convection of gas to take away the friction heat in time, and the temperature of the friction surface will rise rapidly, thereby ...

AI Technical Summary

Problems solved by technology

However, the current market price of this type of equipment is relatively high, and it is not convenient to purchase and after-sales service.

In addition, the current conventional friction and wear test equipment for bearings is only suitable for normal temperature and pressure environments, which cannot meet the research requirements. Therefore, it is necessary to design corresponding vacuum friction and wear test equipment to study the friction and wear performance of bearings under vacuum conditions.

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