A tuned mass damper structure with continuously variable frequency

Abstract

The invention discloses a tuned mass damper structure with continuously variable frequency. The tuned mass damper structure comprises a main mass block, a guide mechanism, a constant-stiffness elastic support, a damping unit and a base, wherein the main mass block and the base together constitute a main support structure; the tuned mass damper structure further comprises a stiffness-adjustable elastic support positioned between the main mass block and the base; the stiffness-adjustable elastic support comprises an elastic beam, a sliding part and a fastening piece; the right end of the elastic beam is fixedly mounted on the base; the sliding part is mounted on the main support structure in a position-adjustable manner and can slide in the longitudinal direction of the elastic beam; the fastening piece is used for fixing the sliding part on the main support structure after the sliding part slides to a set position. The tuned mass damper structure has the advantages that stepless adjustment of the support stiffness can be realized in a larger range, tuned mass damper products with the same models can meet vibration damping requirements of base structures of different vibration frequency and also can be used for reducing vibration of base structures with time variable vibration frequency.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation, and more specifically relates to a damping unit. Background technique [0002] Tuned mass damper is a passive vibration damping device that has been widely used in recent years. Due to its simple structure, no need for external energy input, and good stability, it is widely used in micro-vibration control of civil engineering structures and mechanical equipment. Vibration reduction and other fields. [0003] The tuned mass damper consists of three parts: mass block, spring and damping system. By adjusting the natural frequency of the tuned mass damper to the frequency of the controlled structure to change the resonance characteristics of the controlled structure, the vibration energy on the controlled structure is transferred to the tuned mass damper, and then transferred through the damping unit The energy dissipated to achieve the purpose of reducing the vibration of the controlle...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defect that the resonant frequency of existing tuned mass damper products cannot be adjusted or cannot be continuously and accurately adjusted, and it is difficult to adapt to the needs of different vibration frequencies, the present invention provides a tuned mass damper device with continuously adjustable resonant frequency, which can be used in On the premise of not changing or replacing any parts of the product, the resonant frequency of the product can be continuously adjusted in a large range to make it exactly consistent with the vibration frequency of the actual structure at the installation position, so as to achieve the best vibration absorption effect

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