Micro-vibration convergence type vibration isolation device used for satellite flywheel

Abstract

The invention provides a micro-vibration convergence type vibration isolation device used for a satellite flywheel. The micro-vibration convergence type vibration isolation device comprises an upper platform, linings, lower joint pieces, a lower platform, fixed pieces, damping layers, movable pieces, vibration isolators and upper joint pieces. Three trapezoid corners which are evenly distributed are arranged on the upper platform in the circumferential direction, and a plurality of first apertures with the diameter of 3.3 mm are formed in the trapezoid corners and used for being connected with the upper joint pieces. Three grooves which are evenly distributed and used for being connected with the lower joint pieces are formed in the lower platform in the circumferential direction. The upper joint pieces, the vibration isolators, the movable pieces, the damping layers, the fixed pieces and the linings are combined to form three vibration isolator assemblies, the three axes of the three vibration isolator assemblies are converged at one point, and the convergence point is located above the upper platform. The upper platform and the lower platform are connected through the lower joint pieces and the vibration isolator assemblies. The damping layers are clamped between the fixed pieces and the movable pieces. The micro-vibration responses caused when the flywheel operates on orbit can be remarkably reduced, and the stability, reliability and safety of the high-accuracy sensitive load on a satellite are ensured.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to a micro-vibration convergence type vibration isolation device for a satellite flywheel. Background technique [0002] With the development of my country's satellites in the direction of high precision, high stability, and long life, the sensitive loads carried by them have higher and higher requirements for the micro-vibration environment of the platform. Foreign studies have found that the micro-vibration of the flywheel is the main factor affecting the performance index of the satellite payload, so it is very urgent to suppress the micro-vibration caused by the flywheel. Commonly used flywheel micro-vibration control methods include damping, vibration absorption, structural rigidity, vibration isolation, and so on. The effect of damping and vibration reduction is only obvious when it is in resonance; the rigidity of the structure will increase the mass of the satellite; the vibr...

AI Technical Summary

Problems solved by technology

According to the literature search of the prior art, it is found that there is no converging vibration isolation device for satellite flywheels at present. The design constraints of this converging vibration isolation device mainly include three aspects: one is to reduce the vibration of the flywheel when the satellite is in orbit Vibration in six directions; the second is to realize the lightweight design of the structure and the optimized design of the envelope size, saving the entire star resources; the third is to replace the original flywheel bracket with a convergent vibration isolation device to reduce costs

Images