A six-degree-of-freedom quasi-zero-stiffness vibration isolation device, its debugging method, and vibration isolation method

Abstract

The invention belongs to the technical field of vibration isolation, and in particular relates to a six-degree-of-freedom quasi-zero-stiffness vibration isolation device, a debugging method thereof, and a vibration isolation method. A six-degree-of-freedom quasi-zero-stiffness vibration isolation device includes a top plate, a bottom plate, and a vibration isolator arranged between the top plate and the bottom plate; the vibration isolator includes a central support spring and a spring bracket; the central support spring The two ends of the two ends are respectively hung on the central position of the top plate and the bottom plate; there are four groups of the spring brackets, which are distributed rotationally symmetrically at equiangular intervals along the vertical axis of the bottom plate; the two ends of each group of spring brackets are respectively connected to the top plate and The bottom plate is connected, and the spring support is arranged obliquely relative to the horizontal direction. The beneficial effects of the present invention are: adopting four spring supports and one central support spring can realize the effect of vibration isolation with six degrees of freedom and quasi-zero stiffness vibration isolation at the same time, and has the characteristics of compact structure and low natural frequency; and the debugging process is simple and reliable , with the ability of engineering field application.

Description

technical field [0001] The invention belongs to the technical field of vibration isolation, and in particular relates to a six-degree-of-freedom quasi-zero-stiffness vibration isolation device, a debugging method thereof, and a vibration isolation method. Background technique [0002] The vibration isolator is a device used to isolate the impact of external disturbance vibration on the normal working conditions, use accuracy and stability of the vibration-isolated equipment. It is mainly used in precision machine tools, sensitive instruments, automobiles and other occasions. Its key performance Parameters include vibration transmissibility, natural frequency, etc. [0003] An ideal vibration isolator should have the characteristics of low vibration transmission rate, high static stiffness, light weight, and low natural frequency, which can increase the use range of the vibration-isolated equipment, effectively reduce the natural frequency of the system, and increase the vibr...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing six-degree-of-freedom vibration isolation platform generally has the problems of large volume, complex structure, and cumbersome debugging, and the quasi-zero stiffness vibration isolator also has the problem of large duty cycle of negative stiffness components

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