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Active and semi-passive composite vibration isolator

A vibration isolator, semi-passive technology, applied in spring/shock absorber, vibration suppression adjustment, mechanical equipment, etc., can solve the problems of high control cost, unstable system, difficult to achieve system wide frequency, complex frequency, etc. Compressive characteristics and output force, good low-frequency characteristics, and fast response

Active Publication Date: 2017-05-31
合肥庐阳科技创新集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an active-semi-passive composite vibration isolator to overcome the difficulty of the magneto-rheological elastomer The effect of suppressing high-frequency vibration is not ideal, and it is impossible to effectively suppress vibration in the entire frequency range. Actively controlled vibration isolators require a lot of energy injection to actively control vibration in the entire frequency range, and the system is prone to instability. High cost of control and complex control strategies

Method used

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  • Active and semi-passive composite vibration isolator
  • Active and semi-passive composite vibration isolator
  • Active and semi-passive composite vibration isolator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 , the structural relationship is as follows: the magnetostrictive unit and the magneto-rheological elastomer unit are arranged inside the frame of the composite vibration isolator, the magnetostrictive unit is arranged under the magneto-rheological elastomer unit, the two are connected in series, and the magnetostrictive The unit, the magnetorheological elastomer unit and the composite vibration isolator frame together constitute the composite vibration isolator;

[0036] The magnetostrictive unit includes a reset preload spring 5, a lower coil bobbin 6, a magnetostrictive rod 7, a permanent magnet 8, a push rod 12 and a lower excitation coil 13;

[0037] The magnetostrictive rod 7 is fixed in the frame of the composite vibration isolator, the lower excitation coil 13 is arranged on the periphery of the magnetostrictive rod 7 through the lower coil frame 6, the permanent magnet 8 is cylindrical, and is sleeved on the lower excitation coil 13 and the lower c...

Embodiment 2

[0047] see figure 2 , the structural relationship is as follows: the magnetostrictive unit and the magneto-rheological elastomer unit are arranged inside the frame of the composite vibration isolator, the magnetostrictive unit is arranged under the magneto-rheological elastomer unit, the two are connected in series, and the magnetostrictive The unit, the magnetorheological elastomer unit and the composite vibration isolator frame together constitute the composite vibration isolator;

[0048] The magnetostrictive unit includes a reset preload spring 5, a lower coil bobbin 6, a magnetostrictive rod 7, a permanent magnet 8, a push rod 12 and a lower excitation coil 13;

[0049] The magnetostrictive rod 7 is fixed in the frame of the composite vibration isolator, the lower excitation coil 13 is arranged on the periphery of the magnetostrictive rod 7 through the lower coil frame 6, the permanent magnet 8 is cylindrical, and is sleeved on the lower excitation coil 13 and the lower ...

Embodiment 3

[0059] see image 3 , the structural relationship is as follows: the magnetostrictive unit and the magnetorheological elastomer unit are arranged inside the frame of the composite vibration isolator, the magnetostrictive unit is arranged under the magnetorheological elastomer unit, the magnetostrictive unit, the magnetorheological elastomer unit The unit and the composite vibration isolator frame together constitute the composite vibration isolator;

[0060] The magnetostrictive unit includes a reset preload spring 5, a lower coil bobbin 6, a magnetostrictive rod 7, a permanent magnet 8, a push rod 12 and a lower excitation coil 13;

[0061] The magnetostrictive rod 7 is fixed in the frame of the composite vibration isolator, the lower excitation coil 13 is arranged on the periphery of the magnetostrictive rod 7 through the lower coil frame 6, the permanent magnet 8 is cylindrical, and is sleeved on the lower excitation coil 13 and the lower coil Outside the skeleton 6, the r...

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Abstract

The invention discloses an active and semi-passive composite vibration isolator, and relates to the technical field of vibration isolation mechanisms. A magnetostriction unit and a magneto-rheological elastomer unit are arranged in a composite vibration isolator frame. The magnetostriction unit is arranged below the magneto-rheological elastomer unit. The magnetostriction unit and the magneto-rheological elastomer unit are connected in series. The composite vibration isolator is jointly composed of the magnetostriction unit, the magneto-rheological elastomer unit and the composite vibration isolator frame. According to the active and semi-passive composite vibration isolator, an upper magnet exciting coil magnetic field acts on a magneto-rheological elastomer, the elasticity modulus of the magneto-rheological elastomer is adjusted, and the composite vibration isolator conducts semi-passive control over vibration transmission between equipment and a base body during high-frequency small amplitude acting; and a lower magnet exciting coil and a permanent magnet magnetic field act on a magnetostriction bar, the expansion and contraction quantity of the magnetostriction bar is adjusted, the composite vibration isolator conducts active control over vibration transmission between the equipment and the base body during medium-low-frequency large amplitude acting, and active and semi-passive composite control vibration isolation within the full-band range is overall achieved.

Description

technical field [0001] The invention relates to the technical field of vibration isolation mechanisms, in particular to a composite vibration isolator used in a vibration control system (such as a mechanical power system). Background technique [0002] During the working process of the mechanical power system, changes in the rotational speed of the power unit and changes in the working environment are usually accompanied by changes in the disturbance excitation, and the disturbance directly transmitted to the substrate will cause the substrate to vibrate violently. In order to eliminate or reduce vibration, a vibration isolator will be set between the equipment and the base. An ideal vibration isolator can effectively suppress vibrations in the entire frequency range, that is, it can not only suppress high-frequency vibrations, but also have a good suppression effect on medium and low-frequency vibrations. [0003] Passive vibration isolators are simple in structure and rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/36F16F15/00
CPCF16F1/361F16F1/3615F16F15/002F16F15/005
Inventor 白先旭蔡飞龙钱立军
Owner 合肥庐阳科技创新集团有限公司
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