SINGLE-DEGREE-OF-FREEDOM MAGNETIC VIBRATION ISOLATION DEVICE

摘要

A single-degree-of-freedom magnetic vibration isolation device belongs to vibration isolation devices and solves the following problems: the existing active and passive combined vibration reduction system is complex in structure, needs energy supply, and has low reliability. The present invention includes a metal conductor sleeve, a base, an upper annular permanent magnet, a lower annular permanent magnet, a connecting rod and a center permanent magnet; poles of the upper annular permanent magnet and the lower annular permanent magnet facing to each other have reverse polarity, which are connected to an upper end and a lower end of an inner wall of the metal conductor sleeve respectively; the center permanent magnet is concentrically sleeved on the connecting rod and fixedly connected therewith, and the center permanent magnet is located between the upper annular permanent magnet and the lower annular permanent magnet, and is capable of moving axially together with the connecting rod between the upper annular permanent magnet and the lower annular permanent magnet; and the pole of the center permanent magnet facing to the poles of the upper annular permanent magnet and the lower annular permanent magnet have reverse polarity. The present invention is simple in structure, does not need energy supply, has high reliability, and can generate a static magnetic force and a dynamic magnetic force. Connecting the device according to the present invention with a passive vibration isolation system in parallel can effectively improve the passive vibration isolation performance of the original system.

主权项

1. A single-degree-of-freedom magnetic vibration isolation device, comprising a base, an upper annular permanent magnet a lower annular permanent magnet, a connecting rod and a center permanent magnet, wherein
an upper surface of the base is connected with a metal conductor sleeve, the metal conductor sleeve is a hollow metal cylinder, and the base closes a lower end face of the metal conductor sleeve; the upper annular permanent magnet and the lower annular permanent magnet are in the same shape, both of which are hollow rings; the upper annular permanent magnet and the lower annular permanent magnet are embedded into an upper annular bushing and a lower annular bushing respectively, the upper annular bushing and the lower annular bushing are connected to an upper end and a lower end of an inner wall of the metal conductor sleeve respectively, such that the upper annular permanent magnet the lower annular permanent magnet and the metal conductor sleeve are axially concentric, and poles of the upper annular permanent magnet and the lower annular permanent magnet facing to each other have reverse polarity; and an axis of the connecting rod is coaxial with a central axis of the metal conductor sleeve, and the center permanent magnet is a hollow ring, is concentrically sleeved on the connecting rod and fixedly connected therewith; an upper end of the connecting rod passes through a center hole of the upper annular permanent magnet, and the center permanent magnet is located between the upper annular permanent magnet and the lower annular permanent magnet, and is capable of moving axially together with the connecting rod between the upper annular permanent magnet and the lower annular permanent magnet; poles of the center permanent magnet and the upper annular permanent magnet facing to each other have reverse polarity, and poles of the center permanent magnet and the lower annular permanent magnet facing to each other have reverse polarity.