A variable stiffness vibration isolator for vibration isolation of electronic equipment

Abstract

The invention provides a variable rigidity vibration isolator for electronic equipment vibration isolating. The variable rigidity vibration isolator comprises an upper base, a lower base, a magneto-rheological damper unit and a variable rigidity unit. The magneto-rheological damper unit comprises a cylinder-shaped cylinder barrel, a piston rod, a piston head, an upper end cover and a lower end cover. The variable rigidity unit is coaxially arranged outside the magneto-rheological damper unit in a sleeving manner and sequentially comprises a cylindrical magneto-rheological elastomer, a magneto-rheological elastomer magnet exciting coil winding and an outer magnetic conductive barrel from interior to exterior. Compared with the prior art, the variable rigidity vibration isolator has the beneficial effects that independent rigidity changing, independent damping changing and rigidity damping changing can be achieved, three work modes are changed at the same time, and a good vibration isolating effect is achieved; the axial bearing capability of the vibration isolator can be improved, and meanwhile the displacement stroke is enlarged; and effective magnetism conduction can be achieved, and the utilization rate of the magnetic field is increased.

Description

technical field [0001] The invention relates to the field of intelligent vibration isolation technology, in particular to a vibration isolation device with variable stiffness used for vibration isolation of electronic equipment. Background technique [0002] The influence of vibration widely exists in production and life, which will cause a series of problems. For example, in the operating environment of some electronic equipment and instruments, vibration will make equipment measurement inaccurate or reduce the service life of equipment. Under the requirements of precision measurement, it is particularly important to reduce the impact of vibration. At the same time, in order to maximize the efficiency of equipment use, it is also urgent to reduce the damage to equipment parts caused by vibration. [0003] Nowadays, in the fields of automobiles, trains, airplanes, etc., the application of electronic equipment is becoming more and more common, so research on how to reduce the...

AI Technical Summary

Problems solved by technology

At present, most of the vibration isolation systems used for electronic equipment are passive vibration isolation, but among the existing vibration isolators, few of them can realize the adjustment of stiffness and damping at the same time, so a vibration isolator with adjustable stiffness and damping is designed , which is very important to meet higher vibration isolation requirements

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