Magneto-Rheological Shock Absorber with Double-tube Structure Based on Flow Mode

Abstract

The invention relates to a double-barrel-structure magneto-rheological shock absorber based on a flow mode. The double-barrel-structure magneto-rheological shock absorber comprises an outer cylinder barrel and an inner cylinder barrel which is installed in the outer cylinder barrel, wherein a gap is formed between the outer cylinder barrel and the inner cylinder barrel, the upper end and the lower end of each of the outer cylinder barrel and the inner cylinder barrel are respectively sealed to a base through an end cover, through holes are formed in the circumferential wall of the lower end of the inner cylinder barrel, an inner cavity of the inner cylinder barrel is communicated with the gap between the inner cylinder barrel and the outer cylinder barrel through the through holes, a piston is arranged in the inner cavity of the inner cylinder barrel, the piston is fixedly connected with a piston rod, one end of the piston rod is fixedly connected with the piston, the other end of the piston rod stretches out of the end cover, a through hole which is used for the piston rod to run through is formed in the end cover, the space between the piston and the base in the inner cavity of the inner cylinder barrel is filled with magneto rheological liquid, a magnetic field adjusting device is fixed on the base, and a conducting wire of the magnetic field adjusting device is led out from a leading-out hole formed in the base. By adopting the double-barrel-structure magneto-rheological shock absorber, the working stroke of the shock absorber is increased, the application range of the shock absorber is enlarged, and the dissipation of the working heat of the shock absorber in long time can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of shock absorbers, and in particular relates to a magneto-rheological shock absorber with double-tube structure based on a flow mode. Background technique [0002] Magnetorheological fluid is an intelligent dispersion material composed of soft magnetic suspension phase, organic suspension medium and additives. Under the action of an external magnetic field, its viscosity can be adjusted continuously, rapidly and reversibly. Through the control of the magnetic field, a continuously adjustable damping force is generated. Vibration control technology based on magnetorheological vibration reduction has been used in automobiles, machinery, construction, aviation and other fields. [0003] In the current magnetorheological shock absorber, the excitation coil is mainly wound on the piston, and the excitation coil wire is led out of the shock absorber through the deep hole processing of the piston rod. During the ...

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Problems solved by technology

[0003] In the current magnetorheological shock absorber, the excitation coil is mainly wound on the piston, and the excitation coil wire is led out of the shock absorber through the deep hole processing of the piston rod. During the movement of the piston, a high temperature is generated due to friction, and the coil is energized at the same time. It will also generate heat itself, which will easily cause the heat accumulation of the coil, resulting in the excessive concentration of heat at the piston and the dilution of the magneto-rheological fluid, resulting in a decrease in the damping performance of the shock absorber; as a single-rod shock absorber, it is necessary to set the volume compensation of the piston rod inside mechanism, often the compensation mechanism and the piston are in the same cavity, which seriously limits the working stroke of the shock absorber and restricts the application range of the shock absorber

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