Double-rod variable-orifice passive single-control variable-damping magnetorheological damper

A magneto-rheological damper and orifice technology, applied in vibration suppression adjustment, non-rotational vibration suppression, etc., can solve the problem of limited damping force adjustment range, achieve no upper limit of damping force, save electric energy, and have a simple and reasonable structure Effect

Inactive Publication Date: 2015-12-16
CHANGZHOU UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: aiming at the technical problems such as the limited range of damping force adjustment in the

Method used

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  • Double-rod variable-orifice passive single-control variable-damping magnetorheological damper

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] see figure 1 As shown, the dual-rod variable orifice passive single-control variable damping magneto-rheological damper of the present invention includes a rheological fluid cylinder 1 and two sets of end caps with identical structures that are respectively installed at both ends of the rheological fluid cylinder 1 Module 2, the two groups of completely identical structures are magnet piston modules 3 installed symmetrically inside the rheological fluid cylinder 1; the rheological fluid cylinder 1 is a hollow cylinder; the magnet piston module 3 can move along the rheological fluid cylinder 1 The inner surface movement of the end cover module 2 includes an end cover body 21, a bearing hole 24 located at the center of the end cover body 21, a linear bearing 22 installed in the bearing hole 24, and a sealing device 23 for sealing...

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Abstract

The invention discloses a double-rod variable-orifice passive single-control variable-damping magnetorheological damper and belongs to the field of variable-damping magnetorheological fluid instruments. The variable-damping magnetorheological damper comprises a rheological fluid cylinder body, two end cover modules identical in structure, and two magnet piston modules. The two magnet piston modules are identical in structure and are symmetrically arranged in the rheological fluid cylinder body. The magnet piston modules comprise piston bodies, piston rods, permanent magnets arranged on the inner sides of the piston bodies, and magnet protective layers arranged on the permanent magnets. Orifices with the unchanged internal diameters are formed in the piston bodies. A gradually-changing throttling column parallel to the piston rods is arranged between the two end cover modules. The gradually-changing throttling column is a conical rod, the diameter of the middle of the gradually-changing throttling column is maximal, the diameters of the two ends of the gradually-changing throttling column are minimal, and the diameters of the other portions of the gradually-changing throttling column linearly change. The internal diameters of the orifices are equal to the maximal diameter of the gradually-changing throttling column. The magnetorheological damper is reasonable in structure and free of energy consumption, and damping force has no upper limit range.

Description

technical field [0001] The invention relates to the field of variable damping magnetorheological fluid instruments, in particular to a dual-rod variable throttle passive single-control variable damping magnetorheological damper. Background technique [0002] Magnetorheological damper is an intelligent variable damping vibration reduction instrument, which is widely used in structural vibration reduction control fields such as automobiles, bridges, and buildings. It has the characteristics of small size, fast response, and adjustable damping force. The working principle of the magnetorheological dampers in the prior art is basically the same, that is, the magnetic field generated by the excitation coil is used to change the viscosity of the magnetorheological fluid flowing in the constant working gap to realize the control of the damping force. Although the magnetorheological damper in the prior art realizes variable damping, it still has certain defects: (1) the constant wor...

Claims

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Application Information

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IPC IPC(8): F16F9/53
Inventor 班书昊李晓艳胡爱萍蒋学东谭邹卿席仁强
Owner CHANGZHOU UNIV
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