Six-dimension anti-shock vibration isolation system and manufacturing method thereof

Abstract

The invention discloses a six-dimension anti-shock vibration isolation system and a manufacturing method thereof. The six-dimension anti-shock vibration isolation system comprises two parallel mechanisms and a damping mechanism, wherein the two parallel mechanisms are composed of supporting bodies, a middle suspension frame, a supporting platform and branch chains, and the damping mechanism is connected in the parallel mechanisms. By means the characteristic that singular configuration rigidity of the parallel mechanisms approximates to zero in a set degree-of-freedom direction, the direction of constraining force of the parallel mechanisms and the direction of damping force of dampers are distributed in six degrees of freedom spatially, the fact that the system has maximum damping in the minimum-rigidity degree-of-freedom direction is achieved, and shock and large impact in any degree-of-freedom direction are isolated.

Description

technical field [0001] The present invention relates to vibration damping devices. Background technique [0002] In the prior art, there is a vibration damping device for reducing the vibration of six degrees of freedom in space made in the form of a parallel mechanism, such as a six-degree-of-freedom vibration damping vibration damping mechanism disclosed in Chinese patent CN102705429A, the vibration damping mechanism includes upper and lower Distributed flat-plate structure moving platform and fixed platform, the moving platform is elastically supported on the fixed platform through six parallel damping devices, the damping device is specifically a single-degree-of-freedom damping moving pair composed of springs and hydraulic dampers, each The upper and lower ends of the damping device are respectively hinged with the moving platform and the fixed platform through spherical joints. When using this type of vibration damping device manufactured in the form of a parallel mec...

AI Technical Summary

Problems solved by technology

When this type of vibration damping device manufactured in the form of a parallel mechanism in the prior art is used, the object is fixed on the moving platform, and the movement of the moving platform in the direction of six degrees of freedom will be hindered by the damping device, thereby reducing the vibration of the moving platform. vibration of a fixed object; but there are two problems in the prior art: ① there is a contradiction between the goals of vibration isolation and shock isolation, vibration isolation is a steady-state process, and shock isolation is a transient process, both of which have The requirements for system characteristics are very different. Vibration isolation requires the lower the stiffness of the system, the better, but this will increase the relative displacement of the impact; the damping ratio, the vibration isolation requirement is around 0.1, and the shock isolation requirement is above 0.4

② For the shock and vibration isolation design in the six-dimensional direction (six degrees of freedom direction), it is very easy to have redundancy, interference and other problems, which will weaken the vibration isolation capability in some directions, and it is difficult to balance the vibration isolation performance in all directions

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