Two-layer plate frame type vibration damping base of composite structure

Abstract

A two-layer plate frame type vibration damping base of a composite structure comprises an equipment installation rigid base, an upper layer composite material plate frame, a middle layer rigid vibration-isolation panel, a lower layer composite material plate frame and a rigid connection transition plate which are sequentially distributed from top to bottom in the vertical direction. The upper end and the lower end of the upper layer composite material plate frame are fixedly connected with the equipment installation rigid base and the middle layer rigid vibration-isolation panel respectively, and the upper end and the lower end of the lower layer composite material plate frame are fixedly connected with the middle layer rigid vibration-isolation panel and the rigid connection transition plate respectively. By means of the two layers of composite material plate frames, a hard-soft-hard-soft-hard elastic vibration-isolation structure is integrally formed, characteristics of a composite material can be fully used, the dual aims of reducing vibration and noise and reducing the weight of the base are achieved on the premise that the rigidity and strength requirements of the vibration damping base structure are met, and low-frequency noise reduction can be achieved.

Description

technical field [0001] The invention relates to the technical field of vibration isolation, in particular to a vibration isolation base of a double-layer plate frame type composite structure applied to ship power machinery and ship equipment. Background technique [0002] The excitation to the hull of various power mechanical equipment on the ship is an important cause of the vibration of the hull structure, and the base is an important connection structure between the hull and the vibration source equipment. The vibration generated by the ship power machinery and equipment during operation, most of which Part of it is directly transmitted to the hull structure through the base, and becomes structure-borne noise. The vibration damping characteristics of the ship foundation structure and the matching relationship with the vibration isolation system directly affect the vibration isolation performance of the entire system. [0003] According to the traditional vibration isolat...

AI Technical Summary

Problems solved by technology

Existing composite material base structures usually "composite" traditional bases without redesigning the structure to achieve sufficient vibration and weight reduction effects, and low-frequency noise reduction is still an important part of the existing vibration isolation base. One of the technical bottlenecks of bases (including traditional rigid, flexible vibration isolation bases and composite material bases)

Images