Cam roller negative stiffness structure low-frequency vibration isolator

A cam roller and negative stiffness technology, applied in the field of vibration reduction and vibration isolation, can solve the problems of inconvenient installation of low-frequency vibration isolators, poor adaptability to working conditions, complex structure, etc., to reduce impact, ensure synchronization, and improve applicability Effect
CN107740843APending Publication Date: 2018-02-27BEIJING MUNICIPAL INST OF LABOUR PROTECTION +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
Publication Date
2018-02-27

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Abstract

The invention relates to a cam roller negative stiffness structure low-frequency vibration isolator. According to the low-frequency vibration isolator, a positive and negative stiffness parallel connection principle is adopted, a positive stiffness element and a negative stiffness element are connected in parallel, system resonance is restrained in combination with an added damping device, and protection is provided for drastic situations. A positive stiffness adjustment device and a negative stiffness adjustment device are used for realizing effective and accurate adjustment of the positive stiffness range and negative stiffness range to meet different bearing mass and vibration isolation requirements. The problems that an existing low-frequency vibration isolator is inconvenient to install, complex in structure, poor in work condition adaptability and the like are solved.
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Description

technical field

[0001] The invention relates to the technical field of vibration reduction and isolation, in particular to a low-frequency vibration isolator with a cam roller negative stiffness structure. Background technique

[0002] At present, urban rail transit, as one of the most effective ways to relieve urban traffic pressure, has developed rapidly. However, the environmental vibration induced by it is becoming more and more serious: the impact of gravity loading on the track when the train is running will cause the vibration of the track structure, and the vibration will be transmitted to buildings, equipment, etc. along the sleepers, ballast bed, foundation, etc., which will cause serious environmental damage vibration. Among these environmental vibrations, low-frequency vibration is the difficulty of environmental vibration control.

[0003] On the other hand, with the development of large-scale and lightweight power machinery, the flexibility of components cont...

Claims

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