Design And Development Of Comprehensive Performance Experiment Platform For Water Lubricated Bearing And Its Transmission System

Using a new engineering composite material in place of precious metal as its highperformance transmission material, and water instead of mineral oil as its lubricantmedium, water lubricated bearing has significant advantages of high reliability, lownoise, long life, no pollution, easy maintenance, wear resistance, high efficiency, energysaving and so on. But the present comprehensive performance test equipment andtesting method for water lubricated bearing are not perfect enough. The actual workingcondition of the water lubricated bearing and its transmission system, Such as loadingposition, arrangement direction of shaft and bearing, testing for experimental subject oflarge size and high specific pressure, comprehensive simulation of the vibration loading,cannot be fully simulated.For the above problems, a comprehensive performance experiment platform forwater lubricated bearing and its transmission system has been designed and developedin this paper. It can simulate the complex working conditions of water lubricatedbearing with large size and high specific pressure and its transmission system. Variousperformance parameters of water lubricated friction pair can be tested online to study onthe key scientific problems of the dynamic service behavior about such water lubricatedmechanical transmission system. There are some important scientific significance andengineering practical value in the research. The main research works are listed asfollows:①The research status at home and abroad of experiment platform for waterlubricated bearing was analyzed. Aimed at the existing deficiencies and current needs,the key parameters of experiment platform were determined and its overall schemedesign was completed through calculation and contrast.②The structure design for key parts of experiment platform was done. The3Dsolid modeling and virtual assembly of experiment platform was completed bySolidworks, and the engineering drawing of the processed machined parts was drawn byAutoCAD.③According to the requirements of experiment platform for load, the schemedesign of loading subsystem was proposed. The composition and main functionalparameters of loading subsystem were introduced. The structure of the shaft-end fixturewas designed. The dynamics analysis for loading structure is done by ANSYS Workbench to get its first10order natural frequencies and corresponding vibrationmodes, and the displacement response curve with frequency in the key parts. The resultsshow that the structure wouldn’t resonate, and has good dynamic characteristics.④The experiment platform was installed and debugged. Some problemspresented are analyzed, and their solutions are introduced. The friction coefficient wasmeasured as a test project of the verification experiment. The results show that theexperiment platform system can run normally, the mechanical structure design isreasonable, the test data is accurate and reliable, and it can meet its design goal.