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Adaptive linear magnetic liquid damping vibration absorber

A magnetic liquid, self-adaptive technology, applied in the direction of shock absorber, shock absorber, spring/shock absorber, etc., can solve the problems of poor self-adaptability, limited vibration damping effect, etc., and achieve the effect of increasing the relative displacement

Inactive Publication Date: 2015-04-08
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common external vibration has uncertainty, and its vibration frequency changes randomly, which makes the common magnetic liquid damper with fixed frequency relatively poor adaptability, and the corresponding vibration reduction effect is limited

Method used

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  • Adaptive linear magnetic liquid damping vibration absorber
  • Adaptive linear magnetic liquid damping vibration absorber

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing:

[0018] The shock absorber is an adaptive linear magnetic liquid damping shock absorber, and its structural section is shown in figure 1 As shown, it includes non-magnetic end cap 1, permanent magnet sheet 2, non-magnetic circular tube 3, magnetic liquid 4, induction coil 5, cylindrical permanent magnet 6, excitation coil 7, armature 8, cover 9, energy management circuit 10;

[0019] The cylindrical permanent magnet 6 with the magnetic liquid 4 adsorbed on both ends is placed in the non-magnetic circular tube 3 , and is suspended in the non-magnetic circular tube 3 by the magnetic liquid 4 as an inertial mass. The non-magnetic end cap 1 with the permanent magnet sheet 2 fixed on the inner wall is fixed on an open end of the non-magnetic circular tube 3, and the permanent magnet sheet 2 is opposite to the pole of the same name of the cylindrical permanent magnet 6. An induc...

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PUM

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Abstract

The invention relates to an adaptive linear magnetic liquid damping vibration absorber and belongs to the field of mechanical engineering vibration. A vibration pick-up system of the vibration absorber consists of an inertial mass block and a magnetic reed structure; the rigidity of a magnetic reed can respond to external vibration and can be automatically adjusted; the damping of the vibration absorber consists of electromagnetic damping and viscous damping. A cylindrical permanent magnet adsorbing magnetic fluid serves as the inertial mass block, is positioned in a circular tube, and is subjected to the action of repulsion of magnetic fields of a permanent magnetic sheet and an excitation coil at two ends of the circular tube; the magnetic repulsion resultant force provides restoring force for the inertial mass block, wherein the magnetic repulsion provided by the excitation coil is changeable, and is controlled by collection energy of an induction coil positioned on the outer wall of the circular tube from the external vibration, so the inherent frequency of the magnetic liquid vibration absorber adapts to the external vibration and constantly approaches to the frequency of the external vibration, and the vibration damping performance is improved.

Description

technical field [0001] The invention relates to an adaptive linear magnetic liquid damping shock absorber, which belongs to the field of mechanical engineering vibration. Background technique [0002] The vibration pickup system used in the common passive damping and vibration reduction system is mainly composed of springs and inertial mass mechanically connected, which makes it show poor fatigue resistance and high noise; another vibration pickup system uses magnetic springs instead Mechanical spring, in order to increase the structural stability of the magnetic spring structure, it is usually necessary to increase the guiding device of the inertial mass block, such as a guide rod, a sleeve, etc., which will increase the friction between the permanent magnet and the guiding device and reduce its vibration pickup performance . [0003] Magnetic liquid is a stable colloidal suspension formed by dispersing nano-ferromagnetic or ferrimagnetic particles coated with surfactants ...

Claims

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Application Information

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IPC IPC(8): F16F9/53
CPCF16F9/535
Inventor 王四棋李德才
Owner BEIJING JIAOTONG UNIV
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