Magnetorheological fluid damping vibration isolator

A magnetorheological fluid and vibration isolator technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of magnetorheological fluid damping isolators with few phononic crystals

Inactive Publication Date: 2017-08-18
HARBIN ENG UNIV
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Problems solved by technology

[0005] Although the existing vibration and noise reduction structures are various, however, it is not only necessary to use the damping characteristics of magnetorheological fluids to develop magnetorheological fluid dampers, or to use the bandgap characteristics of phononic cry

Method used

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  • Magnetorheological fluid damping vibration isolator
  • Magnetorheological fluid damping vibration isolator
  • Magnetorheological fluid damping vibration isolator

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Embodiment Construction

[0016] A new type of controllable damping vibration isolator based on the coupling effect of a magnetorheological fluid damper and a magnetorheological fluid vibration isolator. The magnetorheological fluid damping vibration isolator includes a working cylinder, a piston assembly, an energy storage, an electromagnetic iron group. The piston assembly includes a hollow piston rod, a piston guide coaxially installed on the hollow piston rod, an electromagnet core and a piston head, and the piston head is fixedly connected with the hollow piston rod; the upper working cylinder includes a cylinder barrel and an upper cover; Filled with magnetorheological fluid, the electromagnet core is a number of I-shaped disc structures, and the excitation coil is evenly wound at the groove of the I-shaped disc structure of the magnetic core. The winding directions between adjacent coils are opposite to prevent the magnetic field from canceling out. There is an insulating gasket between the magn...

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Abstract

The invention belongs to the field of vibration control, and in particular relates to a shear mode magnetorheological fluid damper and a magnetorheological fluid damping vibration isolator with periodic impedance distribution formed by the magnetorheological fluid. The invention comprises a magnetorheological fluid damper and a magnetorheological fluid vibration isolator, the magnetorheological fluid damper and the magnetorheological fluid vibration isolator are connected by a flange, and a sealing ring is arranged at the joint for sealing; the magnetorheological fluid The damper includes three parts: the working cylinder, the piston assembly and the accumulator; the working cylinder includes the cylinder barrel, the upper cover and the piston assembly; the piston assembly includes the hollow piston rod, the piston head installed at the end of the piston rod, Piston guide, magnetic core on piston rod. When no current is applied or the control system fails, the magneto-rheological fluid damping isolator becomes a traditional damper, which also has a certain damping force and can play a role in reducing vibration. The arrangement of multi-layer electromagnets constitutes a phonon crystal structure, and the introduction of a phonon crystal structure can realize the isolation of elastic wave vibration in the middle and low frequency bands.

Description

technical field [0001] The invention belongs to the field of vibration control, and in particular relates to a shear mode magnetorheological fluid damper and a magnetorheological fluid damping vibration isolator with periodic impedance distribution formed by the magnetorheological fluid. Background technique [0002] Vibration can cause a series of problems, such as fatigue damage of mechanical parts, loosening and fracture failure caused by vibration, and equipment accidents directly or indirectly. In view of this, various vibration isolators have been used to reduce vibration and energy dissipation in industries such as aerospace, military guns, and automobiles. [0003] Magnetorheological fluid is an intelligent material that 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. Magneto-rheological fluid can change its own state rapidly (short re...

Claims

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Application Information

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IPC IPC(8): F16F9/53
CPCF16F9/535F16F2222/06
Inventor 赵丹刘少刚韩维光冯立锋石新新赵跃超杨加庆陈璐李征远刘永超
Owner HARBIN ENG UNIV
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