Prismatic tensegrity type quasi-zero stiffness vibration isolator

Abstract

The invention provides a prismatic tensegrity type quasi-zero stiffness vibration isolator, and belongs to the field of vibration control. The isolator comprises a spiral spring for providing positivestiffness and a prismatic tensegrity structure for providing negative stiffness; the prismatic tensegrity structure comprises a bearing platform, a base, multiple rod components and multiple rope components; the bearing platform is located above the base; the spiral spring is arranged between the bearing platform and the base in the vertical direction and is in the pre-compressed state; the multiple rod components and the multiple rope components are arranged between the bearing platform and the base and are used for connecting the bearing platform and the base; and each rod component is hinged to the bearing platform and the base. The isolator is simple in structure, convenient to mount and dismount, reasonable in design and easy to adjust, the design of the quasi-zero stiffness vibration isolator is realized by the aid of special mechanical properties of the tensegrity structure, and the isolator can be popularized to be applied to low-frequency vibration control.

Description

technical field [0001] The invention relates to the technical field of vibration control, in particular to a prismatic tension integral quasi-zero stiffness vibration isolator. Background technique [0002] With the development of engineering technology and the continuous improvement of people's living standards, people pay more and more attention to the research on equipment vibration. According to the vibration theory, the traditional linear vibration isolation method only works when the excitation frequency is greater than the natural frequency of the vibration isolation system. Only when the frequency is high, it has the effect of vibration isolation. If low-frequency vibration is to be isolated, the system stiffness must be very low, which will inevitably affect the bearing capacity of the mechanical system. Therefore, low-frequency vibration isolation is still a major problem in the field of vibration engineering. [0003] To solve this problem. Generally, positive...

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Problems solved by technology

[0004] The invention provides a prismatic tension integral type quasi-zero-stiffness vibration isolator to solve the technical problem that the existing quasi-zero-stiffness vibration isolator generally can only achieve quasi-zero-stiffness under specific load conditions

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