A three-dimensional vibration isolation device

A vibration isolation, three-dimensional technology, applied in the direction of shock absorber, shock absorber, shockproof, etc., can solve the problems of small horizontal stiffness, damage, swing, etc., and achieve the effect of excellent vibration isolation effect

CN111305630BActive Publication Date: 2021-03-30TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-03-30

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Abstract

The invention is a three-dimensional vibration isolation device, which mainly includes a horizontal vibration isolation device, including guide rails, rubber bearings and Euler beams; a vertical vibration isolation device, including a disc spring, a loading ring, and a coil spring; a connecting and limiting device Wait. The invention utilizes the negative stiffness characteristics of Euler beams, combines rubber bearings and guide rails to obtain lower horizontal stiffness, and has a good horizontal shock isolation (vibration) effect; utilizes the negative stiffness characteristics of disc springs, and combines spiral springs to form Vertical vibration isolation (vibration) device with quasi-zero stiffness characteristics; the motion of the two is decoupled to achieve the effect of three-dimensional isolation (vibration). The invention is suitable for buildings, instruments and equipment sensitive to environmental vibration, has excellent shock isolation (vibration) effect, and has certain tensile capacity.
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Description

technical field

[0001] The invention relates to a three-dimensional vibration isolation device, which belongs to the field of structural vibration isolation and vibration control. Background technique

[0002] Vibration isolation technology has been widely researched and applied in the field of building structure isolation and vibration control of instruments and equipment. The basic principle of vibration isolation is to set a vibration isolation layer with less rigidity through a support or a special structure between the vibration-isolated body and its underlying foundation, and concentrate the deformation on the vibration-isolation layer, thereby reducing external environmental vibration or earthquake action. Below, the dynamic response of the upper isolator.

[0003] However, the existing vibration isolation devices have the following deficiencies: first, when the existing rubber bearings ensure the vertical bearing capacity, it is difficult to achieve a sufficiently s...

Examples

Embodiment 1

[0030] Such as Figure 1-9 as shown,

[0031] A three-dimensional vibration isolation device, characterized in that: comprising

[0032] 1. The support system, including an upper connecting plate 1, an intermediate connecting plate 8, a lower connecting plate 17, and a peripheral plate 4; The middle connecting plate 8 is connected to form a frame body; the upper connecting plate 1 is used to place the vibration-isolated object; the lower connecting plate 17 is connected to the foundation;

[0033] 2. Horizontal vibration isolation device, including rubber bearing 6, guide rail, slide block 5, Euler beam (first Euler beam 21, second Euler beam 22);

[0034] The rubber support 6 is arranged in the center of the entire horizontal vibration isolation device, its upper end surface is connected with the upper connection plate 1, and its lower end surface is connected with the middle connection plate 8. The rubber support 6 provides horizontal restoring force for the entire device,...