Prismatic tensegrity type quasi-zero stiffness vibration isolator

A technique of tensioning the whole and quasi-zero stiffness, applied in the functional characteristics of spring/shock absorber, spring/shock absorber, coil spring, etc., to achieve the effect of high degree of generalization, simple and reliable structural design, and low production cost

Active Publication Date: 2020-10-13
UNIV OF SCI & TECH BEIJING
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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

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  • Prismatic tensegrity type quasi-zero stiffness vibration isolator
  • Prismatic tensegrity type quasi-zero stiffness vibration isolator

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] This embodiment provides a prismatic tension integral type quasi-zero stiffness vibration isolator, which not only has high static and low dynamic mechanical characteristics, but also can realize adjustable negative stiffness, simple structure, convenient installation, and effective The vibration isolation frequency range is widened, and a reliable method is provided for low-frequency axial vibration isolation control. Such as figure 1 As shown, the prismatic tensegrity integral quasi-zero stiffness vibration isolator of this embodiment includes: a coil spring 7 for providing positive stiffness and a prismatic tensegrity integral structure for providing negative stiffness, which are formed by connecting the two in parallel ;in,...

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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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Application Information

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IPC IPC(8): F16F1/12
CPCF16F1/128F16F2228/06F16F2228/063
Inventor 张立元刘龙岳徐光魁殷旭王朋飞
Owner UNIV OF SCI & TECH BEIJING
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