Calibration device for simulating friction moment of spaceflight bearing under zero gravity

Abstract

A space bearing friction torque calibration device under simulated weightlessness, mainly including a support platform, a support base, a support frame, an ultra-small flat pressure sensor, a positioning plate, a sliding sleeve, a guide rod, an upper cover, an adjusting gasket, a positioning bearing, an elastic Retaining ring lower cover, shaft, column, moving plate, electromagnet, miniature pressure sensor, lower cover, lower cover vertical plate, manual lifting platform and bearing sleeve, the weight loss time established by the present invention is relatively different from other tests for simulating weight loss It is relatively long, the development cycle is short, and the cost is very low.

Description

technical field [0001] The invention relates to a calibrating device for simulating the weightless environment in space for aerospace bearings. Background technique [0002] The working conditions of aerospace bearings are very demanding, and they need to work frequently under conditions such as weightlessness, extreme temperature, and vacuum. In practical applications at home and abroad, there have been "stuck" phenomena. Extreme conditions such as gravity, extreme temperature and vacuum cause ball bearings with repeated starts and low speeds to fail to start and run poorly. The stuck ball bearing shaft ring cannot rotate relative to the seat ring, and even the failure behavior that the starting friction torque is too large leads to deformation and fracture of the cage. In the current ground simulation test, only extreme temperature and vacuum are tested, and the bearing does not appear "stuck" phenomenon during start-up operation. It can be inferred that the cause of this...

AI Technical Summary

Problems solved by technology

[0002] The working conditions of aerospace bearings are very demanding, and they need to work frequently under conditions such as weightlessness, extreme temperature, and vacuum. In practical applications at home and abroad, there have been "stuck" phenomena. Due to extreme conditions such as gravity, extreme temperature and vacuum, ball bearings with repeated starts and low speeds cannot start and run poorly

The lagging ball bearing shaft ring cannot rotate relative to the seat ring, and even the failure behavior that the starting friction torque is too large leads to deformation and fracture of the cage

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