Spring steel disc type dynamic vibration absorber with adjustable rigidity

Abstract

The invention provides a spring steel disc type dynamic vibration absorber with the adjustable rigidity. The spring steel disc type dynamic vibration absorber comprises an electromagnetic spring part and a mass block, the bottom of the electromagnetic spring part is fixedly installed inside an annular spring structure, the upper end of a center shaft of the electromagnetic spring part is connected with the annular spring structure, and the mass block is fixedly installed on the upper portion of the annular spring structure. The electromagnetic spring part is additionally arranged on the spring steel disc type dynamic vibration absorber, so that the spring steel disc type dynamic vibration absorber has the advantage of being rapid in frequency change response, the rigidity can be changed only by changing the current, the on-line continuous adjustment can be achieved, the frequency of changes is tracked, working condition changes of mechanical equipment are adapted, and the vibration absorption requirements under different conditions can be better met.

Description

technical field [0001] The invention relates to a vibration absorber, in particular to a dynamic vibration absorber with variable stiffness. Background technique [0002] Mechanical vibration will cause many adverse effects in engineering, such as causing noise pollution, affecting the work of other mechanical equipment, reducing the accuracy of instruments and machines, and even causing damage to equipment and building structures in severe cases. Various methods are used in engineering to reduce the hazards of vibration, mainly including vibration absorption, vibration isolation, vibration resistance, vibration elimination and structural modification. Among them, adding a dynamic vibration absorber to the controlled system is an effective means to suppress vibration. A dynamic shock absorber is a structure with certain stiffness and mass. When the excitation source with a specific frequency excites the total system, if the natural frequency of the vibration absorber is th...

AI Technical Summary

Problems solved by technology

[0003] The traditional dynamic vibration absorber is a passive system with invariable parameters such as stiffness and mass. The natural frequency cannot be adjusted from time to time. It has a good vibration absorption effect on the specific frequency of the controlled system, but the vibration absorption effect on objects with changing vibration frequencies is poor.

Images