Integrated gravity unloading mechanism

Abstract

The invention provides an integrated gravity unloading mechanism which is used for carrying out gravity unloading on a micro-vibration simulation platform and comprises a motor, a worm and gear mechanism, an unloading spring, an L-shaped frame, a bearing rod, a portal frame and a thrust bearing. The micro-vibration simulation platform comprises an upper platform and a lower platform. The upper end of the L-shaped frame is fixedly connected with the upper platform through a screw; the lower end of the portal frame is fixedly connected with the lower platform through screws; the bearing rod sequentially penetrates through the thrust bearing and the L-shaped frame from bottom to top, the upper end of the bearing rod is movably connected with the lower end of the unloading spring, and the upper end of the unloading spring is movably connected with the worm and gear structure. When the motor works, forward rotation and reverse rotation are conducted alternately, a worm in the worm and gear mechanism is driven to move up and down, the unloading spring is further driven to move up and down, and the unloading spring drives the upper platform to move up and down together. The gravity load of the upper platform and the experiment load is eliminated by the tension of the unloading spring, so that the upper platform is leveled and returned to zero, and the weightless environment in the space is simulated.

Description

technical field [0001] The invention relates to the field of ground simulation of space micro-vibration sources, in particular to a gravity unloading mechanism integrated with a micro-vibration simulation platform. Background technique [0002] At present, in order to break through the limitation of the satellite platform's micro-vibration environment on the imaging quality of high-precision remote sensors, a micro-vibration simulation platform that can simulate the space micro-vibration environment is needed. When the micro-vibration simulation platform is working, it needs to unload the upper platform and its experimental load by gravity to simulate the weightlessness environment in space. However, the traditional gravity unloading system often needs to occupy a large space, and it is difficult to integrate with the micro-vibration simulation platform. When it is necessary to change the working place, it is not only inconvenient to transfer, but also needs to be re-adjust...

AI Technical Summary

Problems solved by technology

However, the traditional gravity unloading system often needs to occupy a large space, and it is difficult to integrate with the micro-vibration simulation platform

When it is necessary to change the working place, it is not only inconvenient to transfer, but also needs to be reassembled

Therefore, it is of great engineering significance to carry out research on the integration of the gravity unloading system and the micro-vibration simulation platform to solve the problems that the original gravity unloading system occupies a large space, is not easy to transfer, and is troublesome to reinstall.

[0003] At present, there are not many literatures about the gravity unloading mechanism of the micro-vibration simulation platform at home and abroad, and there are even fewer studies on the integration of the micro-vibration simulation platform and the gravity unloading system

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