High-load vibration isolator capable of adjusting rigidity and damping

Abstract

The invention provides a high-load vibration isolator capable of adjusting rigidity and damping. The vibration isolator comprises a vibration isolating plate, a bearing table, a magnetorheological damper, a diaphragm spring and a support base; the bearing table comprises a bearing plate, a sleeve, an upper diaphragm spring base and a lower diaphragm spring base; the vibration isolating plate is arranged on the upper surface of the bearing plate; the diaphragm spring comprises an upper diaphragm spring and a lower diaphragm spring; the upper diaphragm spring and the lower diaphragm spring sleeve the sleeve; a spacing ring for mounting the diaphragm springs is fixedly arranged on the upper outer side wall of the sleeve; a spacing ring is fixedly arranged on the inner edge of the upper diaphragm spring; the outer edge of the upper diaphragm spring is slidingly matched with the upper diaphragm spring base; the inner edge of the lower diaphragm spring fixedly connected with the spacing ring; and the outer edge of the lower diaphragm spring is slidingly matched with the lower diaphragm spring base. The vibration isolator can meet the requirement of high load, achieves high adaptability,and can adjust the rigidity and the damping to effectively meet the frequency characteristics and the energy dissipation characteristics.

Description

technical field [0001] The invention relates to a vibration isolation device, in particular to a vibration isolator with large load and adjustable stiffness and damping. Background technique [0002] Vibration isolation technology has been widely used in various industries, such as aviation, vehicles, ships, precision machining, etc. The precision instruments and equipment in the spacecraft will be subject to severe impact during launch and landing, which may cause damage to the equipment; when the vehicle is driving on a bumpy road, the seat shakes violently, resulting in a poor experience for the passengers; the propulsion device of the ship brings Vibration noise caused by strong environmental vibration will become the source of underwater radiation noise; the vibration of the exposure machine lens and workpiece table limits the minimum lithography line width of the lithography machine, resulting in the inability to improve its resolution. With the advancement of science...

AI Technical Summary

Problems solved by technology

When the load mass is constant, the stiffness of the vibration isolation support determines its resonance frequency; the damping reflects the vibration energy dissipation capacity of the vibration isolation support; However, rubber will experience fatigue and aging during use and storage, and its performance will gradually decline or even fail as time goes by. Especially in the use of ship vibration isolators, rubber is exposed to high temperature and radiation Corrosion and aging are faster in environments such as sunlight and seawater

Existing metal vibration isolators can work in oily, high and low temperature harsh environments, are not easy to age, and have relatively stable performance, but are not capable of bearing large loads

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