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Active dual-control variable-damping magneto-rheological damper for double-rod variable cylinder block

A magneto-rheological damper and variable damping technology, which is applied to liquid shock absorbers, shock absorbers, shock absorbers, etc., can solve the problems of small damping force and poor control effect, and achieve large damping force and simple structure Reasonable, well-controlled performance effects

Inactive Publication Date: 2015-11-18
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magneto-rheological damper in the prior art realizes variable damping, but there are still certain defects: the damping force is too small in the zero-current state with a constant working gap; Poor control of magnetorheological fluids

Method used

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  • Active dual-control variable-damping magneto-rheological damper for double-rod variable cylinder block
  • Active dual-control variable-damping magneto-rheological damper for double-rod variable cylinder block

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Embodiment Construction

[0011] Hereinafter, the present invention will be further described in detail with reference to the drawings and specific embodiments.

[0012] See figure 1 with figure 2 As shown, the dual-rod variable cylinder active dual-control variable damping magnetorheological damper of the present invention includes a gradient working cylinder 1, two sets of end cover modules 2, two identical in structure, respectively installed at both ends of the gradient working cylinder 1. The group structure is exactly the same, the piston module 3 installed symmetrically inside the gradient working cylinder 1, the power supply 6, the working gap 43, and the magnetorheological fluid 5 installed on one of the end cover modules 2. The gradient cylinder cylinder 1 is the middle part of the inner diameter The hollow cylinder with the largest and smallest ends, linearly changing along its axis; the end cover module 2 includes an end cover body 21, a bearing hole 22 opened in the center of the end cover b...

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Abstract

The invention discloses an active dual-control variable-damping magneto-rheological damper for a double-rod variable cylinder block, and belongs to the field of variable-damping magneto-rheological liquid instruments. The damper comprises a gradient work cylinder, two end cap modules identical in structure, two piston modules identical in structure, a power supply, a work gap and magneto-rheological liquid, wherein the two piston modules are symmetrically installed in the gradient work cylinder. The gradient work cylinder is a hollow cylinder, the inner diameter becomes smaller from the middle to the two ends linearly along the axis of the gradient cylinder block. Each piston module comprises a piston, an electrified coil, a coil protective layer and a piston rod, wherein the electrified coil is arranged in a groove outside the piston, and the coil proactive layer is arranged outside the electrified coil; a gap between the outer peripheral wall of the coil protective layer and the inner peripheral wall of the gradient work cylinder form a work gap allowing the magneto-rheological liquid to flow. The magneto-rheological damper is simple and compact in structure, the work gaps are variable, damping force is large, and the two coils are used for precisely controlling the damping force.

Description

Technical field [0001] The invention relates to the field of variable damping magnetorheological fluid instruments, in particular to a dual-rod variable cylinder active dual-control variable damping magnetorheological damper. Background technique [0002] Under the action of a magnetic field, the magnetorheological fluid formed by small soft magnetic particles dispersed in the carrier fluid can realize the mutual transformation between Newtonian fluid and Bingham fluid within milliseconds. Magnetorheological damper made of magnetorheological fluid has the advantages of large output, small size, fast response, adjustable damping force and so on. The prior art magnetorheological damper uses the magnetic field generated by the excitation coil to change the shear yield strength of the magnetorheological fluid flowing in a constant working gap to realize the control of the damping force. The prior art magnetorheological damper achieves variable damping, but it still has certain drawb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/20F16F9/53F16F9/32
CPCF16F9/20F16F9/3235F16F9/535
Inventor 班书昊李晓艳华同曙蒋学东何云松席仁强
Owner CHANGZHOU UNIV
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