Magnetic liquid damping vibration attenuating device

Abstract

A magnetic liquid damping vibration attenuating device belongs to the mechanical engineering vibration field, is suitable for vibration attenuating of long objects, and solves the problem that service life of a permanent magnet is shortened and vibration attenuating performance is affected due to the collision of the inner wall of an existing magnetic liquid damping vibration attenuator shell and the permanent magnet. The magnetic liquid damping vibration attenuating device is characterized in that a first annular permanent magnet is adhered to the inner wall of a shell by gum to form the inner wall of an vibration attenuator; the diameter of the first annular permanent magnet equals to the diameter of the inner wall of the shell; the depth of the shell equals to the height of the first annular permanent magnet; wedge angle gaskets are installed on the bottom of the shell, V-shaped included angles are placed upwards, and a second annular permanent magnet adhered to magnetic liquid is arranged in the shell; both the first annular permanent magnet and the second annular permanent magnet are magnetized along the radial direction, and the magnetizing directions of the first annular permanent magnet and the second annular permanent magnet are opposite; and an O-shaped rubber sealing ring is embedded in a groove which is placed on an opening end surface of the shell, and an end cover and the shell are tightly connected together through a bolt and a nut. The magnetic liquid damping vibration attenuating device is simple, reliable, obvious in vibration attenuating effect, and long in service life.

Description

technical field [0001] The invention belongs to the field of mechanical engineering vibration. Background technique [0002] Due to its high sensitivity to inertial force, large energy consumption, small size, simple structure, and long life, the magnetic liquid damping and vibration reduction technology has been gradually used in the aerospace field. The typical structure of the existing magnetic liquid damping shock absorber is as described in the patent application with publication number CN 102032304A. The shock absorber includes: an O-shaped rubber sealing ring, a housing, a magnetic liquid, a permanent magnet, and an end cover. The permanent magnet is placed in the casing, the magnetic liquid is adsorbed on the permanent magnet, the end cover and the casing are fixedly connected by bolts and nuts, and the O-shaped rubber sealing ring is used for sealing. When the vibration amplitude of the device is greater than the gap between the housing and the permanent magnet for...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that when the external vibration amplitude of the existing magnetic liquid damping and vibration reduction device is greater than the gap between the housing and the permanent magnet, collisions will occur between the inner wall of the housing and the permanent magnet, resulting in the use of the vibration reduction device. The service life is reduced and the vibration damping performance is affected. Therefore, a magnetic liquid damping vibration damping device is provided

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