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Multifunctional compound vibration isolator

A vibration isolator, multi-functional technology, applied in the direction of shock absorber, shock absorber-spring combination, shock absorber, etc., can solve the problem of unable to realize the adjustment of stiffness, to solve the deterioration of vibration damping performance and improve the low frequency isolation. Vibration effect, natural frequency reduction effect

Active Publication Date: 2020-02-28
中国人民解放军92578部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of vibration isolator is only limited to damping adjustment, and cannot adjust the stiffness, which is insufficient in solving the problem of variable working conditions related to stiffness.

Method used

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  • Multifunctional compound vibration isolator
  • Multifunctional compound vibration isolator
  • Multifunctional compound vibration isolator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The multifunctional composite vibration isolator with adjustable stiffness and damping of this embodiment is as figure 1 , figure 2 with image 3 As shown, the electromagnetic vibration isolator with variable stiffness is composed of the base 1, the armature 4, the shell 5, the upper plate 7, the support 8, the support plate 9, the locking spring 10, the guide seat 11, and the support spring 12. The magnetorheological damper is composed of the magnetorheological damper casing 2, the magnetorheological damper intermediate shaft 3, and the magnetorheological damping valve body 6. The electromagnetic vibration isolator and the magneto-rheological damper form a parallel structure, and the two are independently fed with current.

[0025] The electromagnetic vibration isolator is a magnetic tooth structure arranged on the shell 5 and the armature 4. By changing the input excitation current, the online adjustment of the electromagnetic stiffness is realized, thereby reducin...

Embodiment 2

[0030] This embodiment is a modification of Embodiment 1, the main difference is that the magnetorheological damper is installed inside the electromagnetic vibration isolator, and its structure is as follows Figure 8 As shown, the electromagnetic vibration isolator is composed of base 1, shell 2, armature 6, shell 7, support spring 8, support 9 and support plate 10. The magneto-rheological damper is composed of the intermediate shaft 3, the valve body 4 and the housing 5 within the dotted line frame in the figure. The electromagnetic vibration isolator and the magneto-rheological damper form a parallel structure, and the two are independently fed with current.

[0031] The electromagnetic vibration isolator is a magnetic tooth structure arranged on the shell 2 and the armature 6. By changing the input excitation current, the online adjustment of the electromagnetic stiffness is realized, thereby reducing the natural frequency of the vibration isolation system. The variable d...

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Abstract

The invention provides a multifunctional compound vibration isolator with both stiffness and damping being adjustable, and the multifunctional compound vibration isolator combines a high static stiffness and low dynamic stiffness vibration isolation technology and a variable damping technology. The structure of the multifunctional compound vibration isolator is mainly formed by an electromagneticvibration isolator with the high static stiffness and low dynamic stiffness feature and a magneto-rheological damper through parallel connection. The electromagnetic vibration isolator and the magneto-rheological damper are independently electrified, the multiple functions are achieved, and meanwhile the problem that the vibration damping performance deteriorates due to a jumping phenomenon when an existing negative stiffness technology is applied can be well solved. The electromagnetic vibration isolator adopts a magnetic tooth structure, by changing the input exciting current, online adjustment of electromagnetism stiffness can be achieved, and therefore the inherent frequency of the vibration isolation system is lowered. The variable damping technology adopts the magneto-rheological damper, and the damper of this type achieves damping change also through change of the input current. When the multifunctional compound vibration isolator works, the mode that the electromagnetic vibration isolator works alone, or the mode that the magneto-rheological damper works alone, or the mode that the electromagnetic vibration isolator and the magneto-rheological damper simultaneously work canbe selected.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and isolation, in particular to a multifunctional composite vibration isolator with variable damping and variable stiffness. Background technique [0002] Vibration isolation is an important means to solve vibration control problems in engineering. Although traditional passive vibration isolation devices are simple in structure, cost-effective, and high in reliability, they have some shortcomings such as fixed parameters such as damping and stiffness, which cannot be changed with changes in system excitation. Therefore, in order to adapt to changes in system excitation, semi-active vibration isolation devices based on adjustable stiffness or damping have gradually attracted the attention of researchers. In general, in order to improve the low-frequency vibration isolation effect of the vibration isolation system, it is necessary to reduce the stiffness of the vibration isolation syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F13/00F16F6/00F16F9/53
CPCF16F6/00F16F9/535F16F13/00
Inventor 李欣王雪仁贾地张进秋刘学广唐宇航靳国永高晟耀周涛袁俊杰苏常伟卢清亮管峰
Owner 中国人民解放军92578部队
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