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Compact and light magnetorheological damper with expanded dynamic output force adjustable range

A magneto-rheological damper and dynamic output technology, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, etc., can solve the problems of inability to increase the dynamic range of the output force of the damper, large size, large weight, etc., to achieve large The adjustable range of dynamic output force, the effect of small self-mass and compact structure

Inactive Publication Date: 2013-12-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing magneto-rheological damper has a large structural size and heavy weight, and cannot increase the dynamic range of the output force of the damper and expand its application range, and then provides an adjustable dynamic output force range of compact lightweight magnetorheological dampers

Method used

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  • Compact and light magnetorheological damper with expanded dynamic output force adjustable range
  • Compact and light magnetorheological damper with expanded dynamic output force adjustable range
  • Compact and light magnetorheological damper with expanded dynamic output force adjustable range

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specific Embodiment approach 1

[0013] Specific implementation mode one: combine figure 1 Describe this embodiment, the compact and lightweight magneto-rheological damper of this embodiment that increases the adjustable range of dynamic output force includes an outer connecting rod 1, a first dynamic sealing piston 2, a second dynamic sealing piston 7, and an outer casing 4 , inner casing 5, magnetorheological fluid 6, coil piston 9 and excitation coil 10; the first dynamic sealing piston 2 is provided with a threaded through hole, and the outer connecting rod 1 is threadedly connected with the threaded through hole of the first dynamic sealing piston 2, The first dynamic sealing piston 2, the second dynamic sealing piston 7, the inner casing 5, the coil piston 9 and the excitation coil 10 are all arranged in the outer sleeve 4, and the first dynamic sealing piston 2 and the second dynamic sealing piston 7 are arranged in rows On both sides of the inner casing 5, the first dynamic sealing piston 2 and the se...

specific Embodiment approach 2

[0025] Specific implementation mode two: combination figure 1 and Figure 4 The present embodiment will be described. The exciting coil 10 of the present embodiment is a single-stage coil, a two-stage coil, or a multi-stage coil. This can increase the magnetic field strength in the annular throttle channel, thereby increasing the output force of the damper. The magnetic fields generated by adjacent coils are superimposed on each other at the magnetically permeable material between the two coils. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific implementation mode three: combination figure 1 To describe this embodiment, the lightweight non-magnetic material of this embodiment is aluminum alloy, magnesium alloy, titanium or polytetrafluoroethylene. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a magnetorheological damper, in particular to a compact and light magnetorheological damper with expanded dynamic output force adjustable range, which solves problems that existing magnetorheological dampers are large in size and high in dead weight and the dynamic range of output force and applicable scope of the dampers cannot be expanded. The compact and light magnetorheological damper with the expanded dynamic output force adjustable range is characterized in that a first dynamic seal piston and a second dynamic seal piston are in hermetically sliding connection with the inner wall of an outer sleeve and are connected with each other by a coil piston, an excitation coil is wound on the coil piston, a magnetorheological cavity is formed among the outer sleeve, the first dynamic seal piston and the second dynamic seal piston and is filled with magnetorheological fluid, a circular throttling passage is formed among the coil piston, an outer cylindrical surface of the excitation coil and an inner cylindrical surface of an inner sleeve, the outer sleeve and dynamic seal pistons are made of light non-magnetic materials, and an outer connecting rod, the inner sleeve and the coil piston are made of magnetic materials. The compact and light magnetorheological damper with expanded dynamic output force adjustable range is particularly applicable to small load mass vibration isolation and semi-active control for vibration of light structures.

Description

technical field [0001] The invention relates to a magnetorheological damper, in particular to a compact and lightweight magnetorheological damper which increases the adjustable range of dynamic output force. Background technique [0002] Magnetorheological fluid is an intelligent material whose rheological properties such as viscosity and plasticity change drastically under the action of an external magnetic field. Its basic feature is that it can transform from a free-flowing liquid to a semi-solid within a few milliseconds under the action of an external magnetic field, showing a controllable yield strength, and this change is reversible. The shear yield stress of magnetorheological fluid is an order of magnitude larger than that of electrorheological fluid, and magnetorheological fluid has good dynamic characteristics, low supply voltage and good temperature stability. [0003] The magnetorheological damper is a semi-active control device with excellent performance made ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53
Inventor 陈照波迈迪·阿马迪安王强焦映厚徐毅坚
Owner HARBIN INST OF TECH
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