Zero-gravity support device and zero-gravity simulation system

By combining positive and negative stiffness components, the problem of large error in maintaining constant support force in existing technologies is solved in zero-gravity support devices, thus improving the accuracy and effect of zero-gravity simulation and making it suitable for spacecraft ground simulation tests.

CN224409634UActive Publication Date: 2026-06-26WUHAN GLORY ROAD PRECISION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN GLORY ROAD PRECISION TECH CO LTD
Filing Date
2025-08-28
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing ground-based zero-gravity simulation systems, the error in maintaining a constant support force is relatively large, affecting the accuracy and effectiveness of the zero-gravity simulation.

Method used

The zero-gravity support device, which includes positive stiffness components and negative stiffness components, is used. Through the cooperation of the positive stiffness components and negative stiffness components, the resultant force of the first force and the second force is made into a constant force. The main support rod maintains a constant support force within a certain stroke range. The linear proportional relationship is achieved by using magnetic negative stiffness components and spring components to precisely control the support force.

Benefits of technology

It reduces the error in maintaining a constant support force, improves the accuracy and effectiveness of zero-gravity simulation, and is suitable for spacecraft ground simulation tests.

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Abstract

The application relates to a zero-gravity supporting device and a zero-gravity simulation system. The zero-gravity supporting device comprises a base, a frame shell surrounding a containing space above the base, a positive stiffness assembly and a negative stiffness assembly contained in the containing space, and a main supporting rod vertically movable, which is arranged above the base and connected to the positive stiffness assembly and the negative stiffness assembly, and a top end of the main supporting rod is used for supporting a load. The positive stiffness assembly is used for generating a first action force in the vertical direction applied to the main supporting rod, and the negative stiffness assembly is used for generating a second action force in the vertical direction applied to the main supporting rod, and the resultant force of the second action force and the first action force is a constant force. Through cooperation of the positive stiffness assembly and the negative stiffness assembly, a structure function of zero stiffness is achieved, so that the supporting force of the main supporting rod to the load is unchanged when the main supporting rod moves in the vertical direction within a certain stroke range, and the error of the supporting force keeping constant is reduced, and the precision and effect of zero-gravity simulation are improved.
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