Buckling plate type quasi-zero stiffness vibration isolator

Abstract

The invention relates to the field of low frequency or ultralow frequency vibration isolators, in particular to a buckling plate type quasi-zero stiffness vibration isolator. In order to solve the problems that the buckling plate type quasi-zero stiffness vibration isolator cannot initially preset a quasi-zero state of a system, and has a single vibration isolation object, non-compact structure, shorter service life, and poor reliability, the invention provides the buckling plate type quasi-zero stiffness vibration isolator, which comprises a base, an end cover and a connecting piece, and also comprises a quasi-zero stiffness structure, wherein the quasi-zero stiffness structure comprises an elastic plate with negative stiffness and an elastic part with positive stiffness arranged under the elastic plate; the elastic plate is embedded in an adjusting hoop; the adjusting hoop is fixed at a connecting part between the base and the end cover; the elastic part is supported by an adjusting mechanism; and the adjusting mechanism is arranged on the base. The buckling plate type quasi-zero stiffness vibration isolator can initially preset the quasi-zero state of the system through the adjusting hoop so as to be appropriate for different vibration isolation objects, and has compact and reasonable structural design, high reliability, and long service life.

Description

technical field [0001] The invention relates to the field of low-frequency or ultra-low-frequency vibration isolators, in particular to a buckling plate type quasi-zero-stiffness vibration isolator. Background technique [0002] Automobiles, ships, precision machine tools, and aerospace vehicles are very sensitive to vibration environments. Vibration can seriously affect the comfort of cars, the machining accuracy of machine tools, the stealth of ships, and even cause damage to aerospace vehicles. Therefore, vibration isolation technology, especially low frequency broadband vibration isolation technology has important application value. Existing vibration isolators include metal springs, hydraulic type, air springs, and wire rope vibration isolators. The vibration isolation effect of these vibration isolators in the low frequency range is not very ideal, and cannot meet the requirements of ultra-low frequency vibration isolation. [0003] After searching, the Chinese inven...

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Problems solved by technology

[0004] In order to solve the problems that the existing quasi-zero stiffness vibration isolator cannot actively preset the quasi-zero state of the vibration isolation system, the applicable vibration isolation object is single, and the structure is not compact enough, the service life is short, and the reliability is poor. The present invention provides A Buckling Plate Type Quasi-Zero Stiffness Vibration Isolator

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