Bearing assembly of floating end of spatial motion component shafting

Abstract

The invention discloses a bearing assembly of a floating end of a spatial motion component shafting. The assembly is formed by combining three layers of bearing sleeves and comprises an inner bearingsleeve, a middle bearing sleeve and an outer bearing sleeve. Molybdenum disulfide solid lubricating films are coated outside the inner bearing sleeve, inside and outside the middle bearing sleeve andinside the outer bearing sleeve, and the inner bearing sleeve and the middle bearing sleeve as well as the middle bearing sleeve and the outer bearing sleeve can relatively rotate. The bearing assembly of the floating end of the spatial motion component shafting has the advantages that the bearing assembly of the floating end is composed of the three layers of bearing sleeves, so that the problemthat the shafting is deformed due to violent temperature alternation of motion components on rails, the shafting bearing is abnormally stressed, and a jam fault occurs can be solved. A three-layer bearing sleeve type design is adopted on the assembly structure, the problem of additional stress caused by axial temperature difference and radial temperature difference on a bearing is solved, particularly the problem of additional radial stress of the bearing in a high-low temperature difference environment caused by mismatching of shaft, bearing and bearing seat materials is solved, and the reliability of the spatial motion components can be effectively improved.

Description

technical field [0001] The invention belongs to the field of aerospace, and relates to a bearing assembly used for the floating end of the shaft system of space moving parts, specifically to solve the additional problem caused by the deformation of the shaft system due to the high temperature difference and high vacuum of the motion mechanism outside the cabin in the space field. The stress causes the lubrication to fail or the friction torque to increase significantly, causing the mechanism to be stuck and the satellite or on-board instruments to fail. Therefore, this component can effectively improve the on-orbit life of moving parts in satellites or on-board instruments, and has great economic benefits. [0002] technical background [0003] With the continuous development of my country's aerospace industry, various types of spacecraft in my country have gradually changed from "experimental" satellites to "applied" satellites, which not only put forward higher requirements...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that due to the temperature difference of the shaft system on the rail, the bearing generates additional stress, which leads to lubrication failure and the mechanism is stuck on the rail

The invention provides a bearing assembly for the floating end of the shaft system of space moving parts, which solves the practical problems of aerospace engineering at present

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