Magnetic-solid magnetic liquid damper

Abstract

The invention discloses a magnetic-solid magnetic liquid damper, and belongs to the field of mechanical engineering vibration. Noncontact control of the motion state of a cylindrical permanent magnet inside a magnetic liquid damper by an external permanent-magnetic sheet is realized through the magnetic field attraction between two coaxial columnar permanent-magnetic sheets positioned inside and outside a non-magnetic shell, thereby effectively increasing relative displacement between the permanent magnet and the non-magnetic shell. Cavities in the two ends of the cylindrical permanent magnet which adsorbs magnetic liquid are communicated through a columnar non-magnetic shell, thereby enhancing the vibration sensitivity of the cylindrical permanent magnet. The inner wall axle section of the non-magnetic shell has a continuous trapezoidal toothed structure, and the included angle between the bevel edge of a trapezoidal unit in an axle plane and the axis of the non-magnetic shell is 3-25 degrees. By increasing the extruding deformation degree in the moving process of magnetic liquid, the energy consumption efficiency of the damper is further increased. The damper is simple in structure, high in reliability and excellent in damping effect.

Description

technical field [0001] The invention relates to a magnetic-solid magnetic liquid damping shock absorber, which belongs to the field of mechanical engineering vibration. Background technique [0002] Magnetic liquid vibration damping is a new type of vibration damping method, which is highly sensitive to inertial force, and has the advantages of simple structure, small size, large energy consumption and long life, and has been successfully used in the aerospace field. A common type of magnetic liquid damping shock absorber, such as the application patent of publication number CN 102032304A, the damping shock absorber includes a non-magnetic shell, magnetic liquid, permanent magnets, nuts, end caps, bolts, screws, gaskets and O-shaped sealing ring. Put the permanent magnet into the cavity of the non-magnetic shell, fix the end cover with the O-ring seal on one end of the non-magnetic shell with bolts and nuts, fill the cavity of the non-magnetic shell with magnetic liquid thr...

AI Technical Summary

Problems solved by technology

The energy dissipation of this type of magnetic liquid damping shock absorber is limited. Compared with the piston type magnetic liquid damping shock absorber, the relative displacement between the shell and the permanent magnet in one vibration cycle is smaller, and the effective energy consumption is lower. However, the structure of the piston-type magnetic liquid damping shock absorber is relatively complex, especially in the application process, it is first necessary to solve scientific research problems such as friction and sealing

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