Magnetorheological fluid inflatable vibration reducer

Abstract

The invention relates to a magnetorheological fluid inflatable vibration reducer. The magnetorheological fluid inflatable vibration reducer comprises a working cylinder, a piston rod inserted in the working cylinder and capable of performing a reciprocating motion, a piston module arranged at a free end of the piston rod, and a floating piston and a sealed gas chamber arranged below the piston module in sequence; the piston module divides an inner cavity of the working cylinder above the floating piston into a first working cavity and a second working cavity; both the first working cavity and the second working cavity are filled with magnetorheological fluid; the piston module includes a piston fixedly connected with the free end of the piston rod, a magnet exciting coil wound on the outer side wall of the piston, and circulating valves inserted through the piston; the magnetorheological fluid is circulated between the first working cavity and the second working cavity through the circulating valves; and the sealed gas chamber is filled with high-pressure gas. Compared with the prior art, the magnetorheological fluid inflatable vibration reducer is excellent in sealing effect, largely accelerates relative speeds of the piston module and the working cylinder, can generate high enough damping force, is excellent in noise eliminating effect, is high in magnet exciting utilization rate, and is low in energy consumption.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering and relates to a shock absorber, in particular to a magneto-rheological fluid gas-filled shock absorber. Background technique [0002] Magnetorheological fluid is a new type of smart material, specifically, the flow characteristics of magnetorheological fluid will change with the applied magnetic field. When no magnetic field is applied, the magnetorheological fluid behaves as a liquid state, but after adding a magnetic field, the randomly distributed polarized particles in the magnetorheological fluid form a chain or columnar structure along the direction of the magnetic field, which behaves as a solid state, and a change The process of magnetorheological fluid is very short (milliseconds), and the process of changing from a liquid state to a solid state is reversible. Once the magnetic field is eliminated, the magnetorheological fluid will appear as a liquid state again. Magneto-...

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Problems solved by technology

However, in the technical solution disclosed in the above-mentioned patent, when the wheel is subjected to a sudden impact, the vibration is large, the noise is large, the structure is complicated, and the process is complicated.

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