Frequency adjustable vibration damping device for low-frequency line spectrum of vibratory equipment and vibration damping method thereof

Abstract

The invention relates to a frequency adjustable vibration damping device for a low-frequency line spectrum of vibratory equipment and a vibration damping method thereof. The frequency adjustable vibration damping device comprises a dynamic vibration absorption system formed by a cantilever rod and a particle damper. The frequency adjustable vibration damping device is simple in structure and convenient to use; and the dynamic vibration absorption system formed by a cantilever rod and the particle damper can accurately control the low-frequency vibration line spectrum of the vibratory equipment, has relatively strong applicability and is suitable for the vibration suppression of various equipment in different directions. The frequency adjustable vibration damping device has very good nonlinear low frequency damping performance and the characteristics that the larger the vibration amplitude is, the better the damping effect is. When the dynamic vibration absorption system resonates withthe equipment, the dynamic vibration absorption system has relatively large vibration amplitude, can fully utilize the dissipation mechanism of particle damping, effectively dissipates the low-frequency vibration energy, and reduces the low-frequency line spectrum vibration of the vibratory equipment.

Description

technical field [0001] The invention relates to the fields of low-frequency vibration reduction and noise reduction, in particular to a frequency-adjustable low-frequency line spectrum vibration reduction device for vibration equipment and a vibration reduction method thereof. Background technique [0002] On the one hand, the vibration of mechanical equipment and structures affects the stability of the working state of the equipment, such as the vibration affecting the cutting accuracy of machine tools, etc.; on the other hand, it has a negative impact on the environment. Therefore, both civil and military facilities have put forward corresponding limit standards for vibration and noise. [0003] Suppressing the vibration response of mechanical equipment is the most direct and effective way to reduce its vibration and noise hazards. The main technical means to reduce the vibration response of equipment and structures include applying viscoelastic damping layer, dynamic vibr...

AI Technical Summary

Problems solved by technology

This type of device involves electrical, mechanical, chip and other systems, with complex structure, expensive price and limited use environment

The dynamic vibration absorber is used to control the low-frequency line spectrum, but its vibration reduction also depends on the low-frequency damping performance of the dynamic vibration absorber. Using viscoelastic damping as the dynamic vibration absorber damping also has the problem of insufficient low-frequency damping performance, so conventional dynamic vibration absorbers Often also has limited effect on low-frequency vibration line spectrum

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