Dish-shaped rubber quasi-zero stiffness vibration isolator

A quasi-zero stiffness, vibration isolator technology, applied in non-rotational vibration suppression and other directions, can solve problems such as insufficient compact structure, small bearing capacity, and inability to meet a wide range of applications, achieving light weight, large bearing capacity, and easy maintenance. Effect

Inactive Publication Date: 2013-11-20
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing quasi-zero stiffness vibration isolators are not compact enough in structure, small in load c

Method used

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  • Dish-shaped rubber quasi-zero stiffness vibration isolator
  • Dish-shaped rubber quasi-zero stiffness vibration isolator
  • Dish-shaped rubber quasi-zero stiffness vibration isolator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] like Figure 1 to Figure 3 As shown, in Embodiment 1, a butterfly-shaped rubber quasi-zero stiffness vibration isolator includes a base 1, an upper cover 2 and a bearing joint 6, the inner wall of the upper cover 2 is connected with a butterfly-shaped rubber 3, and the butterfly-shaped rubber The rubber 3 is fixedly connected with the bearing joint 6 and the upper cover 2 to form an elastic element with negative stiffness. The butterfly rubber 3 is provided with a reinforcing rib 9, and the bearing joint 6 is connected with the positive The rigid axial rubber 4 is connected, and the axial rubber 4 is connected to the base 1 through an adjustment sleeve 8 . The butterfly rubber 3 is connected as a whole with the upper cover 2 and the bearing joint 6 by vulcanization. The gland 5 is screwed to the bearing joint 6 , and the axial rubber 4 supports the gland 5 in a hole-fitting manner. A thrust ball bearing 7 is also provided between the adjustment sleeve 8 and the axial ...

Embodiment 2

[0053]The difference between embodiment 2 and embodiment 1 is that in order to provide greater negative stiffness in a limited space, the number of disc rubber 3 in the present invention can be multiple, such as Figure 4 The structure shown has 3 butterfly rubbers 3 .

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Abstract

The invention relates to the field of low-frequency or ultralow-frequency vibration isolators, in particular to a dish-shaped rubber quasi-zero stiffness vibration isolator which aims at solving the problems that an existing quasi-zero stiffness vibration isolator is not compact in structure, low in bearing capacity and not capable of satisfying the requirement for the wide range of application. The dish-shaped rubber quasi-zero stiffness vibration isolator comprises a base, an upper cover and a bearing joint. Dish-shaped rubber is connected with the inner wall of the upper cover. The dish-shaped rubber is fixedly connected with the bearing joint and the upper cover so that an elastic element with negative stiffness can be formed. A reinforcing rib is arranged in the dish-shaped rubber. The bearing joint is connected with axial rubber with positive stiffness through a pressing cover. The axial rubber is connected to the base through an adjusting sleeve. Compared with the existing quasi-zero stiffness vibration isolator, the dish-shaped rubber quasi-zero stiffness vibration isolator has the advantages of being large in bearing capacity, small in size, light in weight and the like and serving as a passive vibration isolator with the small size, the dish-shaped rubber quasi-zero stiffness vibration isolator further has the advantages of being easy to maintain, strong in reliability and the like.

Description

technical field [0001] The invention relates to the field of low-frequency or ultra-low-frequency vibration isolators, in particular to a dish-shaped rubber quasi-zero-stiffness vibration isolator. Background technique [0002] Automobiles, ships, precision machine tools, and aerospace vehicles are very sensitive to vibration environments. Vibration can seriously affect the comfort of cars, the machining accuracy of machine tools, the stealth of ships, and even cause damage to aerospace vehicles. Therefore, vibration isolation technology, especially low frequency broadband vibration isolation technology has important application value. Existing vibration isolators include metal springs, hydraulic type, air springs, and wire rope vibration isolators. The vibration isolation effect of these vibration isolators in the low frequency range is not very ideal, and cannot meet the requirements of ultra-low frequency vibration isolation. [0003] After searching, the Chinese inven...

Claims

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Application Information

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IPC IPC(8): F16F15/04
Inventor 徐道临朱石坚周杰周加喜楼京俊张敬
Owner HUNAN UNIV
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