Magnetorheological energy absorber with failure-safety performance

An energy absorber, safety performance technology, applied in vibration suppression adjustment, non-rotation vibration suppression, etc., to achieve the effect of reliable mechanics requirements

Inactive Publication Date: 2014-06-18
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as mentioned above, the magnetorheological fluid is a suspension of ferromagnetic particles, and the ferromagnetic material is bound to be heavier than the carrier fluid. The precipitation of the magnetorheological fluid and the precipitation of the magnetorheological fluid cannot be fundamentally solved

Method used

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  • Magnetorheological energy absorber with failure-safety performance
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  • Magnetorheological energy absorber with failure-safety performance

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Embodiment Construction

[0031] see figure 1 , is a structural cross-sectional view of the first embodiment of a magneto-rheological energy absorber with fail-safe performance provided by the present invention, Figure 2A , Figure 2B and Figure 2C Yes figure 1 Schematic diagram of the magnetic flux circuit at the A-A section position in the middle under different excitation conditions.

[0032] figure 1 The magneto-rheological energy absorber 100 with practical effect-safety performance mainly includes: an inner cylinder body 101 and an outer cylinder body 102 installed coaxially, a piston 103 in the inner cylinder body, and a permanent magnet 124 arranged outside the inner cylinder body 101 And the electromagnetic coil 115 wound on the permanent magnet 124 and the magnetorheological fluid 104 .

[0033] Wherein, the inner cylinder body 101 is installed in the outer cylinder body 102, and an outer cavity body 105 is formed between the two. The interior of the inner cylinder 101 is the inner ca...

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Abstract

The invention discloses a magnetorheological energy absorber with failure-safety performance. The magnetorheological energy absorber with the failure-safety performance is characterized in that an inner cylinder body and an outer cylinder body form a sleeve barrel structure with two sealed ends, a piston is arranged inside the inner cylinder body, a hollow cavity of the inner cavity body is an inner cavity, an annular outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston divides the inner cavity into a front cavity and a rear cavity, the lateral walls, located at the front end and the rear end of the inner cavity, of the front cavity and the rear cavity are respectively provided with a liquid flowing hole, the inner cavity and the outer cavity are communicated through the liquid flowing holes, magnetorheological liquid fills the inner cavity and the outer cavity, an annular groove is formed in the outer lateral wall of the inner cylinder body and / or the inner lateral wall of the outer cylinder body, electromagnetic coils and permanent magnets are arranged inside the annular groove, and a magnetic field produced by the permanent magnets and the electromagnetic coils is cut by two sides of the inner cylinder body and the two sides of the groove to effectively surround the outer cavity and the outer cylinder body, so that a closed magnetic flow loop is formed. The magnetorheological energy absorber and a semi-active control system of the magnetorheological energy absorber provide the reliable failure-safety performance and effectively widen application occasions.

Description

technical field [0001] The invention relates to the technical field of using magnetorheological fluid for vibration reduction, in particular to a magnetorheological energy absorber with fail-safe performance suitable for vibration / shock control systems. Background technique [0002] Magnetorheological fluid is a suspension of ferromagnetic particles. Under the action of a magnetic field, a series of rapid (ms-level) and reversible changes in physical properties occur, that is, the magnetorheological effect. When there is no magnetic field in the magnetorheological fluid, the suspended ferromagnetic particles in the magnetorheological fluid are arranged in a disorderly manner, and the magnetorheological fluid exhibits the characteristics of Newtonian fluid at this time. When a magnetic field is applied at both ends of the magnetorheological fluid, the ferromagnetic particles will show magnetism to the outside, and they will be neatly arranged in a chain structure according to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53
Inventor 白先旭
Owner HEFEI UNIV OF TECH
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