Wide frequency inertia type active vibration absorber

Abstract

The invention provides a wide frequency inertia type active vibration absorber, comprising a vibration exciter, a metal return spring, a vibration exciter fixing support, two guide shafts, a base and a regulating pressing plate. The two guide shafts are installed on the base; the regulating pressing plate is connected between the two guide shafts; the base, the guide shafts and the regulating pressing plate form a frame structure; the vibration exciter fixing support is installed on the guide shafts and can slide on the guide shafts; the vibration exciter is fixed on the vibration exciter fixing support; the metal return spring is arranged between the vibration exciter fixing support and the frame structure; and the base is provided with a vibration exciting bar. The invention overcomes the disadvantages of the prior passive vibration absorber and the semi-active vibration absorber in low-frequency vibration absorption and wide-frequency vibration so as to be conveniently applied to the vibration excitation in the horizontal direction. A detachable support enables the active vibration absorber to be flexibly arranged and installed on the basis of stably transferring the control force. A guiding mechanism enables the inertia type active vibration absorber to stably and reliably work in the horizontal direction and have the largely improved work efficiency.

Description

(1) Technical field [0001] The invention relates to an active vibration absorber, which is a high-efficiency vibration reduction device in a low-frequency range and a wide-frequency range, and is especially used to solve the vibration control problem in the horizontal direction in practical engineering. (2) Technical background [0002] Eliminating harmful vibrations has long been a hot topic of interest. Traditional passive vibration absorbers and semi-active vibration absorbers have their own advantages for vibration reduction. Passive shock absorbers play a good role in damping vibrations at medium and high frequencies. The semi-active vibration absorber has the advantage of automatically tracking a single vibration frequency of the vibration-absorbing object. For various excitation sources, their excitation force is not necessarily a single frequency, and the frequency range of some excitation forces is mostly concentrated in the low frequency band. This makes the sem...

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Problems solved by technology

This makes the semi-active vibration absorber unable to achieve a good vibration reduction effect, and also makes the traditional passive vibration absorber powerless. At the same time, in actual engineering, vibration control in the horizontal direction is often required. Therefore, the wide-band inertia active vibration absorber that can be applied horizontally is applied Attention has been paid to the damping system

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