A three-directional dynamic vibration absorber and vibration reduction device

By designing a triaxial dynamic vibration absorber, and utilizing an integrated U-shaped elastic component and an overall rigid structure, the problem that existing vibration absorbers cannot adapt to triaxial vibration is solved, achieving a compact and efficient triaxial vibration reduction effect.

CN122407735APending Publication Date: 2026-07-17HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN ENG UNIV
Filing Date
2026-06-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing dynamic vibration absorbers cannot simultaneously adapt to the three-dimensional vibration of the equipment base, occupy a large space, have low structural integration, and require pre-tightening force to adjust stiffness, resulting in poor adaptability.

Method used

Design a three-dimensional dynamic vibration absorber that uses an integrated U-shaped elastic component. Stiffness matching is achieved by adjusting its geometric section parameters, eliminating the need for preload. Four U-shaped springs are integrated to provide three-dimensional elastic support, and the outer shell is welded to the base plate to form an integral rigid structure.

Benefits of technology

It achieves three-way vibration reduction of the equipment base at the same frequency or any frequency, with a compact structure, simple assembly, strong adaptability, and is suitable for space-constrained scenarios such as ships.

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Abstract

本发明提供一种三向动力吸振器及减振装置,属于振动噪声控制技术领域,三向动力吸振器包括动子质量块和弹性构件,动子质量块具有沿厚度方向相对设置的两个表面;弹性构件为一体式成型结构,一体式弹性构件的截面呈U形弯折状,U形弹性构件开口的两端分别形成安装平面,安装平面连接动子质量块的任一表面。本发明整体结构简洁紧凑,通过调整一体式U形弹性构件的几何截面参数实现刚度任意设计,实现设备基座三向同频或任意独立频率减振,无需像常规螺旋弹簧装配时预设压缩或拉伸预紧力,装配简便快捷,适配性强,克服了传统动力吸振器仅能实现单方向减振、且多个使用时占用空间大的不足。
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