Quasi-zero stiffness vibration isolator based on magnetic attraction component and vehicle

Abstract

The invention provides a quasi-zero stiffness vibration isolator based on a magnetic attraction component and a vehicle. The quasi-zero stiffness vibration isolator comprises magnetic spring mechanisms and an air spring; the magnetic spring mechanisms are symmetrically arranged on two sides of the air spring along the axis of the air spring; the magnetic spring mechanisms comprises 3n permanent magnets, and n is a positive integer; the permanent magnets are longitudinally arranged on a guide tube and linearly move along the guide tube, and adjacent permanent magnets are opposite in different stages; the uppermost permanent magnet is connected with one end of the lowermost permanent magnet, the other end of the lowermost permanent magnet is connected with a bottom plate of the air spring; and the middle permanent magnet is connected with an upper end cover plate of the air spring. According to the quasi-zero stiffness vibration isolator, on the premise that the requirement for the quasi-zero rigidity is met, the problems of the large number of parts of the vibration isolator and the large reserved space are solved, and the negative rigidity can be adjusted by adjusting a control coil based on the electromagnetic induction phenomenon.

Description

technical field [0001] The invention belongs to the technical field of vibration isolators, and in particular relates to a quasi-zero stiffness vibration isolator and a vehicle based on a magnetic attraction component. Background technique [0002] The advancement of science and technology has promoted the development of precision instruments, and precision measuring instruments have higher and higher requirements for vibration control. In recent years, the geometric nonlinear problems in engineering applications and the research and design of vibration isolators have attracted extensive attention from scholars at home and abroad. The quasi-zero stiffness vibration isolator makes the stiffness near the equilibrium position close to zero through the parallel connection of positive and negative stiffness, which meets the ideal requirement of "high static and low dynamic" of the vibration isolator. Quasi-zero stiffness is mostly achieved by coil springs, such as CN201510899818...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a quasi-zero-stiffness vibration isolator based on magnetic attraction components, which solves the problem of too many parts of the vibration isolator and requires a large reserved space under the requirement of ensuring quasi-zero stiffness, and utilizes The electromagnetic induction phenomenon adjusts the control coil to realize the adjustable negative stiffness

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