An ultra-low frequency non-resonant metal vibration isolator

Abstract

The invention discloses an ultralow-frequency resonance-free metal vibration isolator and belongs to the field of vibration isolation of precise instruments and equipment. The ultralow-frequency resonance-free metal vibration isolator comprises a vibration isolation guide column, a vibration isolation plate, a free plate, a hollow cylinder, a bearing plate arranged at the upper end of the hollow cylinder, a fixed plate arranged at the lower end of the hollow cylinder, a disc spring B arranged on the fixed plate and located inside the hollow cylinder, and a disc spring A arranged at the bottom of the bearing plate and located inside the hollow cylinder. A protected vibration isolation object is installed on the vibration isolation plate. The free plate is arranged between the disc spring A and the disc spring B. The lower end of the vibration isolation guide column penetrates through a linear bearing arranged on the bearing plate. The pressure and static deformation curves of the disc spring A and the disc spring B are two oblique lines, and the slope of the second oblique line is about one twentieth the slope of the first oblique line. The ultralow-frequency resonance-free metal vibration isolator is reasonable in structure and can achieve excellent vibration isolation to low-frequency exciting signals.

Description

technical field [0001] The invention relates to the field of vibration isolation of precision instruments and equipment, in particular to an ultra-low frequency non-resonant metal vibration isolator. Background technique [0002] With the development of electronic equipment and the transportation industry, the requirements for vibration isolation of electronic equipment are getting higher and higher. The existing widely used dampers mainly include rubber vibration isolator, metal vibration isolator, wire rope vibration isolator and non-resonant peak damping type vibration isolator, but these vibration isolators have relatively high performance after installing the vibration isolation object. High natural frequency, that is, the natural frequency of the whole system is greater than 5Hz. The vibration isolator in the prior art has low vibration isolation effect of the whole system when low-frequency vibration or random excitation occurs; only when the excitation signal is abo...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: aiming at the technical problems of high natural frequency of the system existing in the prior art, the present invention provides an ultra-low frequency non-resonant metal vibration isolator with reasonable structure and capable of achieving good vibration isolation for low frequency excitation signals

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