Damp-controllable magneto-rheological damper

A magnetorheological damper and damping technology, which is applied in the field of dampers, can solve the problems of large damping force, inability to generate, and small chain area of ​​magnetorheological fluid, and achieves a large variation range of damping force, low manufacturing cost, and is suitable for wide range of effects

Inactive Publication Date: 2008-12-10
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

US Patent Pat.6510929B1 guarantees that the magnetorheological fluid is perpendicular to the direction of the magnetic field, but the internal magnetorheological fluid has a small chain area and cannot generate a large damping force

Method used

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  • Damp-controllable magneto-rheological damper

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Embodiment

[0029] see figure 1 , the magneto-rheological damper with adjustable damping includes a hydraulic cylinder 3, a cylindrical piston 6 is arranged in the hydraulic cylinder 3, the piston 6 is connected to the piston rod 2, and the hydraulic cylinder 3 of the damper is divided into two parts by the piston 6 : an upper working chamber (recovery chamber) 5 and a lower working chamber (compression chamber) 7, and a proper amount of magnetorheological fluid is adorned in the working chamber. An electromagnetic coil 10 is arranged in the interlayer side wall of the piston 6, and the electromagnetic coil 10 is connected to an external power supply through two wires 4, and the damping force of the magneto-rheological damper is changed by controlling the magnitude of the external current.

[0030] Depend on figure 2 , image 3 and Figure 4 It can be seen that the inner middle of the piston 6 corresponding to the electromagnetic coil 10 is provided with a parallel upper disc-shaped ...

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PUM

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Abstract

The invention relates to a damping adjustable magneto-rheological damper. The damper is capable of settling the problems that the area of the damping channel of existing magneto-rheological dampers is small, and the produced damping force is weak. A magneto-rheological fluid channel is added in the piston, namely, more than two disk-shape cavities are arranged at the middle part inside the piston in a parallel manner; a damping channel is arranged on the piston in axial direction; the middle part of the top of the disk-shape cavity is communicated with the damping channel, and the upper end of the damping channel is communicated with an outlet, and the outlet is arranged on the piston rod in an axial direction and communicated with an upper working space; the middle part of the lower disc-shape cavity bottom is communicated with an inlet channel. A connecting tube is arranged between more than two disc-shape cavities respectively for intercommunication. The damping force of the damper has a wide range of variation; the magnetic field strength is taken full advantage of; the chain area of the magneto-rheological fluid is increased; and the variation scope of the damping force of the damper is increased. The outlet and the inlet adopt different designs, different compression and return damping forces can be produced to meet different requirements; an extra spring can bear the static load and has damping function.

Description

technical field [0001] The invention relates to a damper utilizing magneto-rheological technology. Background technique [0002] In recent decades, the development of controllable dampers using magnetorheological or electrorheological technology has become more and more rapid, and magnetorheological or electrorheological dampers have been widely used in the field of vibration control, and their controllable damping performance It plays an important role in vehicle engineering, aerospace, civil engineering, sports equipment, etc. [0003] The main components of magnetorheological fluid are soft magnetic particles, mother liquid, and additives that account for a small proportion of the total components in order to prevent the magnetic particles from settling. Its basic feature is that it can change from free liquid to semi-solid in an instant (milliseconds) under the action of an external magnetic field, showing a controllable yield strength, and this change is reversible. T...

Claims

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Application Information

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IPC IPC(8): F16F9/53
Inventor 龚兴龙郭朝阳
Owner UNIV OF SCI & TECH OF CHINA
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