A Very Low Frequency Airbag Vibration Isolation System

Abstract

The invention relates to an extremely low frequency airbag vibration isolation system, which mainly comprises a vertical airbag vibration isolator, a side airbag vibration isolator, a rotating structure, a connecting structure and a load platform. Vertical airbag vibration isolators are used to carry loads and achieve vertical vibration isolation. The lateral airbag vibration isolator is used to improve the stability of the system, avoid direct collision between the load platform and the lateral foundation under conditions such as swing, and achieve lateral vibration isolation at the same time. The rotating structure and the connecting structure are used to reduce the adverse effect of the side airbag vibration isolator on the system and ensure the stability of the system under working conditions such as swing. At the same time, on the basis of this structure, the lateral airbag vibration isolator can be designed to reduce its rotational stiffness and provide the system with negative stiffness to further improve the vibration isolation performance. The invention has the advantages of simple structure, high reliability and low cost, and can be used for low-frequency and high-efficiency vibration isolation of mechanical equipment and systems in industrial and civil applications, especially in the field of ships.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction processing, in particular to an extremely low frequency airbag vibration isolation system. Background technique [0002] Controlling the vibration caused by mechanical equipment to meet the standard requirements is the key to the design of industrial, civil, and especially marine machinery systems, and the control of low-frequency vibration is particularly important. Using a vibration isolation system is one of the most effective ways to reduce the vibration transmission of equipment. The airbag vibration isolation system generally consists of a vertical airbag vibration isolator, a lateral airbag vibration isolator, and a loading platform. The vertical airbag vibration isolator supports the load and realizes vertical vibration isolation. The purpose of introducing the lateral airbag vibration isolator is to improve the stability of the system in swaying and other...

AI Technical Summary

Problems solved by technology

"Smart Airbag Vibration Isolation Device" (Patent No. 200910063656.7) is a vibration isolation device built with smart airbag technology, which can better isolate mechanical vibration and has the function of automatic inflation and deflation. Vibration isolation is not ideal

"A Negative Stiffness Adjustable Zero Stiffness Vibration Isolation Device" (Patent No. 201921442791.8) uses an adjustable negative stiffness mechanism to enable the device to be in an ideal state with dynamic stiffness close to zero under static load, avoiding the failure of the vibration isolation system , but the load capacity of the device is limited, and it cannot meet the vibration isolation requirements under large loads and small displacements, and the lateral elastic body is horizontally limited. When used as a device, the lateral elastic body may be short-circuited. Causes the vibration to be transmitted from the limit device

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