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Novel magneto-rheological fluid damper

A magnetorheological fluid and damper technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of loose fracture failure, fatigue damage of mechanical parts or structures, equipment accidents, etc. achieve the effect of shortening the length

Active Publication Date: 2017-06-13
HARBIN ENG UNIV
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Problems solved by technology

[0002] Vibration can cause a series of problems, such as fatigue damage of mechanical parts or structures caused by vibration, or even loosening and fracture failure, directly or indirectly causing equipment accidents

Method used

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  • Novel magneto-rheological fluid damper

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] A novel intelligent damper based on magnetorheological fluid material, characterized in that: said magnetorheological fluid damper includes a working cylinder, a piston assembly, an energy storage group, and an electromagnet group. The piston assembly includes a hollow piston rod, a piston guide coaxially installed on the hollow piston rod, a piston head, and the piston head is fixedly connected with the hollow piston rod; the working cylinder includes a cylinder barrel and an upper cover; the cylinder barrel is filled with magnetorheological fluid ; There are several flow holes inside the piston guide, and the piston guide is fixed by a lock washer; the opening on the side of the cylinder is connected with a number of external accumulators, and a sliding piston is installed inside the accumulator, and the sliding piston connects the accumulator The cavity is di...

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Abstract

The invention belongs to the field of dampers and intelligent materials and in particular relates to a novel magneto-rheological fluid damper composed of a magneto-rheological fluid shearing mode and a magneto-rheological fluid. One part of the novel magneto-rheological fluid damper is formed by periodically arranging an electromagnet group and an energy accumulator group and the other part of the novel magneto-rheological fluid damper is composed of an outer control system; a magneto-rheological fluid impedance applies an electric field by an electromagnet according to the outer environment and then the magneto-rheological fluid damper is adjusted; the magneto-rheological fluid damper comprises a working cylinder, a piston assembly, an energy accumulation group and the electromagnet group; the piston assembly comprises a hollow piston rod and a piston guide device which is coaxially arranged on the hollow piston rod; a piston head is fixedly connected with the hollow piston rod. When current effect is not applied or the control system has faults, the magneto-rheological fluid damper is changed into a traditional damper and also has a certain damping force to realize vibration damping effect.

Description

technical field [0001] The invention belongs to the field of dampers and intelligent materials, in particular to a novel magnetorheological fluid damper composed of magnetorheological fluid shear mode and magnetorheological fluid. Background technique [0002] Vibration can cause a series of problems, such as fatigue damage of mechanical parts or structures caused by vibration, or even loosening and fracture failure, directly or indirectly causing equipment accidents. In view of this, various dampers have been used to reduce vibration and energy in aerospace, marine, automotive and other industries. [0003] Magnetorheological fluid is a kind of field-induced rheological smart material, which can quickly and reversibly transform from a Newtonian fluid with good fluidity to a Bingham elastoplastic with high viscosity and low fluidity under the action of a magnetic field. The magnetorheological fluid can change its state rapidly with the change of the external magnetic field,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/53F16F9/32
CPCF16F9/3207F16F9/3214F16F9/535
Inventor 赵丹刘少刚韩维光冯立锋石新新赵跃超杨加庆陈璐宋科杰张亚鹏
Owner HARBIN ENG UNIV
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