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Multistage extrusion-type magneto-rheological damper

A magneto-rheological damper, squeeze-type technology, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, etc., can solve the problem of small damping force, achieve the effect of improving the damping force and increasing the effective working area

Active Publication Date: 2013-06-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-stage extrusion magneto-rheological damper with a larger damping force for the disadvantage of the existing magneto-rheological damper that the damping force is relatively small

Method used

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  • Multistage extrusion-type magneto-rheological damper

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Embodiment Construction

[0015] see figure 1 : the multi-stage extruded magnetorheological damper of the present invention is composed of upper end cover 1, outer cylinder body 2, magnetic isolation sleeve 3, upper limit spring 4, piston rod 5, sealing ring 6, sealing bolt 7, auxiliary piston Head 8, coil 9, working cavity 10, inner cylinder body 11, lower end cover 12, lower limit spring 13 and lower piston head 14 are formed. The lower end cover 12 is sequentially connected with a lower limit spring 13 , an inner cylinder 11 , a magnetic isolation sleeve 3 , a coil 9 and an outer cylinder 2 from the inside to the outside, and the upper end cover 1 is connected to the outer cylinder 2 . On the piston head 14, the inner cylinder body 11, the auxiliary piston head 8 and the upper end cover 1, a central hole is provided. The aperture of the inner cylinder body 11 central hole is greater than the diameter of the lower end of the piston rod, and the piston head 14 and the auxiliary piston head 8 are all c...

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Abstract

The invention relates to a magneto-rheological damper, in particular to a multistage extrusion-type magneto-rheological damper. The multistage extrusion-type magneto-rheological damper is suitable for the vibration isolation of an engine or other equipment. The damper comprises an upper end cover, an outer cylinder body, a piston rod, a sealing ring, a sealing bolt, a working cavity, a lower end cover and a piston head, and is characterized in that the damper also comprises a magnetic-isolation sleeve, a coil, an upper spacing spring, an auxiliary piston head, an inner cylinder body and a lower spacing spring, wherein the working cavity is divided into an inner working cavity and an outer working cavity by the inner cylinder body; the working cavity is filled with magneto-rheological liquid; the auxiliary piston head and the piston head connected to the piston rod respectively extrude the magneto-rheological liquid back and forth in the two working cavities to generate radial flowing so as to generate damping force; and the coil is arranged between the outer cylinder body and the magnetic-isolation sleeve to provide a magnetic field so as to regulate the magnitude of the damping force in real time. The output force of the multistage extrusion-type magneto-rheological damper is much more than that of a common magneto-rheological damper, and especially, the impact generated when the equipment is greatly and intensively vibrated under the severe environment can be avoided. The multistage extrusion-type magneto-rheological damper has the advantages of reasonability in design, simple construction, high efficiency, high response speed, high working reliability, good vibration damping effect and long service life.

Description

technical field [0001] The invention relates to a magnetorheological damper, in particular to a multi-stage extrusion magnetorheological damper, which is suitable for vibration isolation of engines or other equipment. Background technique [0002] Magneto-rheological damper, as an intelligent shock absorber device whose damping can be adjusted in real time, has been widely used in today's production and life. The magnitude of its damping force can be remotely adjusted steplessly by controlling the current intensity in the coil , the size of the output damping force is not only related to the size of the control current intensity, but also related to the effective working area between the working cylinder and the piston. Magneto-rheological dampers can be divided into valve mode, shear mode, extrusion mode and combination mode among the above modes according to the working mode. Studies have shown that the pressure generated in MR extrusion mode is higher than that generated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53
Inventor 章新杰郭弓孙明郭孔辉郑福淼
Owner JILIN UNIV
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