Small-amplitude parallel magnetorheological damper based on two polar plates

A magnetorheological damper, parallel technology, applied in shock absorbers, spring/shock absorber design features, shock absorbers, etc., can solve the problems of insufficient damping force, poor controllability, large size, etc. Effect of increasing damping force, changing system stiffness and damping

Inactive Publication Date: 2018-10-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In order to avoid the deficiencies of the prior art, the present invention proposes a small-amplitude parallel magneto-rheological damper based on bipolar plates, which solves the problem of large size and insufficient damping force of existing squeeze-type magnetorheological dampers. And the problem of poor controllability under the condition of small amplitude vibration

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  • Small-amplitude parallel magnetorheological damper based on two polar plates
  • Small-amplitude parallel magnetorheological damper based on two polar plates
  • Small-amplitude parallel magnetorheological damper based on two polar plates

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specific Embodiment

[0045] Such as Figure 8 Shown: The entire magneto-rheological damper is generally in the shape of a cylinder from the appearance, with shafts rising from the upper and lower ends, and the outermost end is covered with a spring. The entire damper has a simple and beautiful appearance and a small size.

[0046] Such as figure 1 Shown: a squeeze-type magneto-rheological damper with small displacement and large damping force of the present invention, including a telescopic shaft 1, an adjustment plate 3, an upper end cover 6, an upper pole plate 7, a lower pole plate 13, an isolation cylinder 9, Excitation coil 10, cylinder body 11, lower end cover 16, spring 5, connecting shaft 18, magnetorheological fluid 12, etc.

[0047] The telescopic shaft 1 has a plurality of shaft sections, and an adjustment plate 3, an upper end cover 6, an upper pole plate 7 and a lower pole plate 13 are sequentially installed from top to bottom. Wherein, the adjustment plate 3 , the upper pole plate...

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Abstract

The invention relates to a small-amplitude parallel magnetorheological damper based on two polar plates. Two polar plates on an extension shaft are connected with a spring on an outer ring of a cylinder block through adjusting plates in parallel; and when the polar plates extrude magnetorheological fluid in a cavity through a reciprocating motion, the spring is compressed or elongated to generatedamping force. The adjusting plates can adjust the extension quantity of the spring to change the damping force provided by the spring. A magnetic exciting coil is arranged between the cylinder blockand an isolation cylinder; the current is adjusted to change the magnitude of a magnetic field; and the mode of the magnetorheological fluid is changed to adjust the damping force. The double polar plates and the spring are combined to realize the rigidity and damping adjustment of the damper; and the damper has the characteristics of small size, high damping force and high controllability, and inparticular, is suitable for the field of vibration control with smaller amplitude, such as vibration inhibition in the cutting process.

Description

technical field [0001] The invention belongs to the technical field of magnetorheological dampers, and relates to a small-amplitude parallel magnetorheological damper based on bipolar plates. It is suitable for the field of vibration control with small amplitude, such as chatter suppression in cutting process, etc. Background technique [0002] Magnetorheological fluid is a new smart material with controllable magnetic field. Under the action of a magnetic field, this type of material can change from a solid state to a liquid state at a speed of milliseconds, and this process is reversible, and can be better used in industries such as mechanical structures and parts processing. Magneto-rheological damper is a kind of shock-absorbing device with excellent performance, and its working medium is magnetorheological fluid. Different from other ordinary dampers, its structure is wound with a coil, and when the current is passed through the coil, a magnetic field will be generate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53
CPCF16F9/535F16F2224/045F16F2230/0005F16F2230/30F16F2232/08
Inventor 陈冰李超牛智炀陈潇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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