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Permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping

A damping adjustment and adjustable technology, which is applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems that cannot be adjusted independently, the stiffness of the vibration isolator and the damping parameters are interdependent, and the vibration isolator is difficult to realize, etc. question

Pending Publication Date: 2019-09-24
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
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Problems solved by technology

In this way, the stiffness and damping parameters of the vibration isolator are interdependent and cannot be adjusted independently, and the magnetic field of the vibration isolator needs to be changed by manually adjusting the distance between the upper and lower permanent magnets. hard to accomplish

Method used

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  • Permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping
  • Permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping
  • Permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping

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Embodiment Construction

[0039] The permanent magnet magneto-rheological vibration isolator with adjustable stiffness and damping provided in this application uses two permanent magnet materials with large differences in magnetic properties, NdFeB and AlNiCo, to form a hybrid permanent magnet. Sensitive viscoelastic materials provide controllable magnetic fields. Among them, due to the high remanence density and coercivity of NdFeB, it is not easy to demagnetize after magnetization, and can be used as a permanent magnet to provide a constant magnetic field; while AlNiCo has a large remanence density, but the coercivity is very low. It is easy to be magnetized and demagnetized, and can be used as a permanent magnet to regulate the magnetic field. Combining the characteristics of the two materials in this way can superimpose an adjustable magnetic field on the basis of a constant magnetic field.

[0040] The permanent magnet magneto-rheological vibration isolator with adjustable stiffness and damping dis...

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Abstract

The invention discloses a permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping. The magneto-rheological vibration isolator comprises a magnetism isolation component, two rigidity adjusting components with the same structure and two damping adjusting components with the same structure; the magnetic isolation component specifically comprises a magnetic isolation base, a cross magnetic isolation plate and an outer sleeve, wherein the cross magnetic isolation plate is fixed on the magnetic isolation base, the outer sleeve is arranged outside the cross magnetic isolation plate, the cross magnetic isolation plate is used for dividing the magnetic isolation component into four independent regions, the independent regions of the two opposite angles are the rigidity adjusting components, and the damping adjusting components are arranged in two independent regions adjacent to the rigidity adjusting components. According to the permanent magnet type magneto-rheological vibration isolator with adjustable rigidity damping, and permanent magnet materials with relatively large difference are formed by utilizing the two magnetic properties of a neodymium-iron-boron and a aluminum-nickel-cobalt to form a hybrid permanent magnet, and a controllable magnetic field is provided for the two magnetic sensitive viscoelastic materials, and therefore, a magnetic field with an adjustable size can be superimposed on the basis of a constant magnetic field by combining the characteristics of the two materials.

Description

technical field [0001] The application belongs to the technical field of structural vibration control, in particular to a permanent magnet magneto-rheological vibration isolator with adjustable stiffness and damping. Background technique [0002] With the improvement of people's awareness of environmental protection and the restrictions on various types of noise by environmental protection departments, especially in recent years due to the continuous expansion of cities and the needs of urban power grid transformation, substations are usually built in commercial areas and residential areas. Distribution transformer is the main source of noise pollution. The vibration and noise generated during its operation seriously affect people's normal life and pollute the environment. Therefore, the problem of vibration reduction and noise reduction of distribution transformers has become an important research topic in the field of transformers. [0003] At present, when installing tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/32F16F9/53
CPCF16F9/3207F16F9/535
Inventor 李丽樊小鹏何宏明邹庄磊唐念马存仁
Owner GUANGDONG POWER GRID CO LTD
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