Low-rigidity flexible suspension device for ground gravity-free condition simulation of aerospace products

Abstract

The invention provides a low-rigidity flexible suspension device for ground gravity-free condition simulation of aerospace products. The suspension device is mainly composed of a suspending truss, an adapter connecting frame, a chain block, an elastic string, and a sensor. Gravity-free condition simulation of products is realized through multi-suspension-point suspending, the suspending force at each suspension point can be independently adjusted, and the mechanical properties of the elastic string are utilized for adjusting the inherent frequency of a suspension system. The suspension device is capable of realizing microgravity condition simulation of detected products, the suspending quantity is not limited, the suspending force at each suspension point can be independently and steplessly adjusted, the suspending force can keep stable for a long time, flexible suspension of detected products can be realized, and the inherent frequency of the suspension system can be adjusted as required, and disturbance to detected products by an outside vibration source can be effectively isolated.

Description

technical field [0001] The invention relates to the field of weightless state simulation, in particular to a low-rigidity flexible suspension device used for simulating the ground weightless state of aerospace products. Background technique [0002] Aerospace products often need to simulate the state of weightlessness when carrying out some ground test projects, such as unlocking of moving parts, measurement of pointing accuracy, micro-vibration testing, etc., especially the micro-vibration testing of high-precision payloads. It is also required that the unloading device itself has a lower natural frequency to isolate the influence of external vibration sources, and at the same time avoid coupling with the vibration isolation device. The request cannot be met. [0003] Therefore, it is necessary to design a low-stiffness flexible suspension device for simulating the weightlessness state of aerospace products on the ground. Contents of the invention [0004] Aiming at the...

AI Technical Summary

Problems solved by technology

[0002] Aerospace products often need to simulate the state of weightlessness when carrying out some ground test projects, such as unlocking of moving parts, measurement of pointing accuracy, micro-vibration testing, etc., especially the micro-vibration testing of high-precision payloads. It is also required that the unloading device itself has a lower natural frequency to isolate the influence of external vibration sources, and at the same time avoid coupling with the vibration isolation device. can not meet the requirements

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