Sliding bearing performance test experiment table in an oil film cavitation state

Abstract

The invention discloses a sliding bearing performance test experiment table in an oil film cavitation state. The performance test experiment table comprises a main body structure and an oil-gas loop.In the main body structure, a metal bearing bush of a sliding bearing is replaced with a transparent organic glass bearing bush so that a high-speed camera can conveniently shoot a change of a gas content in an oil film of the sliding bearing in real time, and the change of the performance of the sliding bearing is obtained through an added sensor; and in order to realize the oil film cavitation condition, a set of oil-gas loop system is designed, and gas-containing oil is filled into the sliding bearing in an operation process so that real-time measurement of an influence of the oil film on the performance of the sliding bearing under the cavitation condition is realized.

Description

technical field [0001] The invention relates to the technical field of bearing performance testing, in particular to an experimental platform for testing sliding bearing performance in an oil film cavitation state. Background technique [0002] The commonly used sliding bearing test bench generally fixes the shaft and puts the bearing pad on top, and the bearing pad is not fixed: the lubricating oil in the bearing pad supports the shaft, and the shaft rotates in the bearing pad under the support of the oil film, and forms a dynamic state under normal working conditions. The pressure oil film is in the state of hydrodynamic lubrication, and the dynamic pressure oil film has a certain bearing capacity after formation, which is the main factor of the performance of the sliding bearing; but when the oil film is in the cavitation state, a large number of air bubbles will be generated in the oil film, when the oil film contains Air bubbles, when the shaft is running, are bound to ...

AI Technical Summary

Problems solved by technology

[0002] The commonly used sliding bearing test bench generally fixes the shaft and puts the bearing pad on top, and the bearing pad is not fixed: the lubricating oil in the bearing pad supports the shaft, and the shaft rotates in the bearing pad under the support of the oil film, and forms a dynamic state under normal working conditions. The pressure oil film is in the state of hydrodynamic lubrication, and the dynamic pressure oil film has a certain bearing capacity after formation, which is the main factor of the performance of the sliding bearing; but when the oil film is in the cavitation state, a large number of air bubbles will be generated in the oil film, when the oil film contains Air bubbles, when the shaft is in operation, are bound to have an impact on the friction power consumption and load performance of the sliding bearing

Commonly used metal bearing bushes are opaque, and it is impossible to dynamically observe changes in the gas content in the oil film, so that it is impossible to monitor the impact of changes in the gas content in the oil film on the performance of the sliding bearing in real time.

However, in practical applications, it is unavoidable to contain gas in the oil film.

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