Extension spring type quasi-zero stiffness vibration isolator

Abstract

An extension spring type quasi-zero stiffness vibration isolator comprises a base. A platform is arranged above the middle of the base. Pressure springs are arranged below the platform in the verticaldirection. The upper end of each pressure spring abuts against the bottom of the platform, and the lower upper end of each pressure spring abuts against the base. Three or more fixed supporting seatsare annularly arranged above the base with the platform as the center. The bottom end of each fixed supporting seat is fixedly connected with the base. A sliding way is arranged at the top end of each fixed supporting seat in the radial direction. The sliding ways penetrate through the inner edges of the corresponding fixed supporting seats inwards in the radial direction. A sliding block is mounted on each sliding way. The end face, facing the platform, of each sliding block is connected with the outer end of a supporting rod in a hinged manner. Each supporting rod is arranged in the radialdirection. According to the extension spring type quasi-zero stiffness vibration isolator, low-frequency vibration between equipment and an equipment foundation can be effectively isolated, the bearing force is large, the vibration isolation effect is extremely good, and the extension spring type quasi-zero stiffness vibration isolator is especially suitable for vibration isolation of operating tables and multiple kinds of precision mechanical equipment.

Description

Technical field [0001] The invention relates to a tension spring type quasi-zero stiffness vibration isolator. Background technique [0002] With the progress and development of society and the improvement of people's living standards, people have higher and higher requirements for the quality of mechanical vibration around them, especially in vehicles and operating tables, high-precision instruments, high-precision mechanical equipment and other precision or ultra-precision Environment. The existing vibration isolator is an elastic element that connects the equipment and the foundation, and is mainly used to reduce and eliminate the vibration force transmitted from the equipment to the foundation, and the medium and high frequency vibration transmitted from the foundation to the equipment. However, studies have shown that people are most sensitive to low-frequency vibrations. Long-term exposure to low-frequency vibrations can cause people to produce fatigue, anxiety and other a...

AI Technical Summary

Problems solved by technology

However, studies have shown that people are most sensitive to low-frequency vibrations. Long-term exposure to low-frequency vibrations will cause adverse reactions such as fatigue and anxiety; and low-frequency vibrations will also cause greater damage to mechanical equipment, which will reduce the work efficiency of mechanical equipment. Even one of the important causes of fatigue damage

Therefore, it is particularly necessary to isolate low-frequency vibrations and protect people and other machinery from low-frequency vibrations, but existing vibration isolators cannot effectively isolate low-frequency vibrations between equipment and equipment foundations

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