Tunable multi-layer damping dynamic vibration absorber and making and mounting method thereof and vibration absorbing method thereof

Abstract

The invention discloses a tunable multi-layer damping dynamic vibration absorber and a making and mounting method thereof and a vibration absorbing method thereof. The tunable multi-layer damping dynamic vibration absorber comprises an internal ring adapting ring, a base rubber layer, an internal ring annular mass layer, an external ring annular mass layer, an external ring annular damping layer and an external ring fixing ring. Two semicircular hoop components are mounted on a pipeline or a shaft system in a docked manner to form an integrated circular ring; and then the external ring fixingring is fixed on the external circumferential surface of the integrated circular ring; and by using the tunable multi-layer damping dynamic vibration absorber, the vibration of the pipeline or the shaft system is absorbed. According to the tunable multi-layer damping dynamic vibration absorber, difficult problems that an existing multi-layer damping dynamic vibration absorber technology faces a shaft system high-strength vibration working environment, a low-hardness rubber material is easy to bent, deform and crack and the frequency of vulcanized and molded high-hardness rubber is hard to change are solved; a problem that the fixed frequency of existing rubber cannot realize wide band and small range fine tuning after being vulcanized is solved; and vibration absorption of a low frequencyand a high frequency and even multiple frequencies can be realized within a smaller space.

Description

technical field [0001] The invention relates to the technical field of shafting and pipeline vibration reduction. Background technique [0002] In shipbuilding, heavy machinery and petrochemical industries, large and complex pipeline systems often induce coupling vibrations between the target pipeline structure and the fluid in the pipeline due to internal and external excitations of the system. How to effectively suppress the vibration of the host equipment and the medium from being transmitted through the target pipeline is an important technical topic, which involves many fields of vibration reduction and noise reduction. Most of the existing technologies are supported by theories related to dynamic vibration absorbers. Among them, due to the special structure of the pipeline equipment (the pipeline or shafting equipment is not allowed to be damaged before and after the installation of the vibration absorber), the existing vibration absorbers are mostly composed of two or...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a tunable multi-layer damping dynamic vibration absorber, its manufacturing and installation method, and vibration reduction method, so as to solve the problem that the natural frequency of the existing rubber after vulcanization cannot be fine-tuned in a wide frequency band and in a small range, and can Realize the vibration reduction of low frequency and high frequency or even multiple frequencies in a small space, and effectively reduce the vibration of the target shafting in a wide frequency range

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