Gravity balancing device for large-aperture space camera

Abstract

The invention provides a gravity balancing device for a large-aperture space camera. The gravity balancing device comprises a space camera supporting structure, a kinematics supporting structure, a single-degree-of-freedom gravity balancing device and a tool structure, wherein the space camera supporting structure is used for fixing an optical lens group of the large-aperture space camera; the space camera supporting structure is hinged to the tool structure through the kinematics supporting structure to unload bending moment. The single-degree-of-freedom gravity balance device is hinged to the space camera supporting structure through the adapting piece to adjust balance, the weight and bending moment of the whole machine are independently unloaded instead of unloading deformation, the single-degree-of-freedom gravity balance device and the space camera supporting structure do not interfere with each other, gravity balance of the space camera is achieved, and it is guaranteed that therelative positions of all the reflectors meet the index requirements. In addition, the gravity balancing device can eliminate the influence of a test environment on a test result, and repeated testscan be achieved.

Description

technical field [0001] The invention relates to the technical field of space remote sensing, in particular to a gravity balance device for a large-diameter space camera. Background technique [0002] Space cameras have the characteristics of no borders in sky observation and earth observation, and more comprehensive and accurate information collection. Therefore, they play a very important role in many fields such as astronomy, earth science, military applications, and civilian production. With the development of space remote sensing technology, space cameras are developing in the direction of large aperture, long focal length, and diversification, which leads to the increase in volume and quality of their supporting structures. To reduce the cost of scientific research and launch costs, the space camera structure must be lightweight designed. A high lightweight rate will lead to a reduction in the cross-sectional size of the space camera structure, which in turn will lead t...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used gravity balance scheme for space cameras is to set multiple gravity balance points on one side of the space camera, and achieve gravity balance by unloading the deformation of the support structure. The essence of this method is to achieve gravity balance through the "over-design" of the support structure. Not suitable for large aperture space-based space cameras

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