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Spiral groove structured magneto-rheological damper

A magneto-rheological damper and spiral groove technology, applied in the field of damping devices, can solve the problems of lack of micro-optimization of damping force, etc., and achieve the effect of improving Coulomb force, preventing settlement, and preventing air bubbles

Inactive Publication Date: 2006-11-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the analysis of the damping force of the magnetorheological damper in the domestic and foreign markets is based on the parallel plate theory, and its damping channel is very smooth, lacking micro-optimization of the damping force

Method used

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  • Spiral groove structured magneto-rheological damper
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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] As shown in the accompanying drawings, it is a schematic design diagram of the magneto-rheological damper with a spiral groove structure of the present invention, which includes a cylinder 3, front and rear end covers 2, 8, a piston 6 arranged inside the cylinder, and the The piston rod 1 connected to the piston, the excitation coil 5 installed on the piston, a throttle passage 4 is arranged between the outer side wall of the piston and the inner side wall of the cylinder barrel, and the side wall of the piston is set Helical groove 7 is arranged. Said helical thread has a helix angle (the angle between the tangent of the helical thread on the cylindrical surface of the piston and the plane perpendicular to the axis of the threaded thread) between 5° and 60°.

[0018] If you want to avoid a large torque, you can reduce the helix angle...

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Abstract

The invention discloses a screw groove magnetic flow changeable damper, which comprises a cylinder, a piston inside the cylinder, a piston rod connected to the piston, an exciting coil mounted on said piston. Wherein, the outer side wall of piston and the inner wall of cylinder have throttle channel between them; the wall of piston has screw groove. The invention has the advantages that: via the micro and concentrated screw grooves, the coulomb force of yield flow can be improved without improving viscous damping force; the via the screw pattern, the peak of damping force can be adjusted; the invention can avoid local accumulation of magnetic flow changeable liquid, to avoid foam; and it can prevent the deposition of magnetic flow changeable flow.

Description

technical field [0001] The present invention relates to a damping device, in particular to a magneto-rheological damper with a spiral groove structure, which is an energy-dissipating and vibration-reducing device with good performance, and can be generally applied to automobiles, machinery, aviation, bridges and civil engineering in the engineering structure. Background technique [0002] The magnetorheological damper is an energy consumption and vibration reduction device that uses magnetorheological fluid as the working medium. Magnetorheological fluid is a suspension liquid formed by dispersing fine soft magnetic particles in a carrier liquid with low magnetic permeability, which can change with the external magnetic field and have controllable rheological properties; under the action of a magnetic field, magnetorheological fluid can In an instant (10ms), the reversible change from liquid state to Bingham semi-solid state can be realized, and after the magnetic field is ...

Claims

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Application Information

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IPC IPC(8): F16F9/53
CPCF16F9/535F16F9/3405
Inventor 李忠献刘建军
Owner TIANJIN UNIV
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