Flexible high-precision spacial vibration damping platform

Abstract

The invention discloses a flexible high-precision spacial vibration damping platform, and relates to the field of multi-dimensional vibration damping and multi-dimensional vibration isolating system manufacture. The flexible high-precision spacial vibration damping platform consists of three flexible branch chains with the same structure, a lower static platform (5) and an upper moving platform (1), wherein the flexible branch chains are positioned between the lower static platform (5) and the upper moving platform (1), and are parallelogram flexible mechanisms (2); and each parallelogram flexible mechanism (2) consists of a first connecting rod (G), a second connecting rod (H), a third connecting rod (I) and a fourth connecting rod (J) which are connected through four single-shaft flexible hinges. The flexible high-precision spacial vibration damping platform eliminates residual oscillation, can realize active vibration damping or vibration isolation on high-precision occasions, has simple and compact structure, and can meet the requirements on different dimensional vibration damping.

Description

technical field [0001] The invention relates to the field of multi-dimensional vibration reduction and multi-dimensional vibration isolation system manufacturing, in particular to a flexible high-precision space vibration reduction table. Background technique [0002] Nowadays, engineering structures are mostly complex multi-degree-of-freedom systems, and most of them are broadband excitations, so multi-dimensional vibrations generally exist in various fields. Traditional multi-dimensional vibration reduction devices usually use multi-layer single-degree-of-freedom devices for vibration reduction. For example, the patent No. 99123143.0 and the patent named "Anti-vibration Frame for Ambulance" use a three-layer structure to separately control the upper and lower sides of the anti-vibration frame. Vibration reduction is implemented in the left, right and front and rear directions, but its structure is complex and the vibration reduction is not reliable. [0003] Due to the ch...

AI Technical Summary

Problems solved by technology

The multi-dimensional vibration damping structure adopts the parallel mechanism as the main vibration damping mechanism and the elastic damping system as the vibration damping actuator, which has a simple structure and strong practicability, and has achieved satisfactory results. There are large or small gaps in each joint. The existence of these gaps causes serious residual vibration of the vibration-damping table under high-frequency motion, seriously affects the vibration-damping performance of the vibration-damping table, and even increases the vibration in individual directions. amplitude, the friction existing in the joints also reduces the vibration damping accuracy, and the rigid rod in the mechanism is not easy to deform and cannot absorb the vibration energy from the automatic platform, which affects the vibration damping effect of the vibration damping table

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