A Multi-stage Elastic Penetration Vibration Isolation Device Based on Rubber Vibration Absorption

Abstract

The invention discloses a multi-stage elastic cabin penetrating vibration isolation device based on rubber vibration reduction. The multi-stage elastic cabin penetrating vibration isolation device based on the rubber vibration reduction comprises a shell, two end part connectors, a vibration isolation assembly and two sealing assemblies, wherein the vibration isolation assembly and the two sealingassemblies are arranged in the shell. The outer wall of the shell is fixedly connected with the cabin wall, the sealing assemblies are arranged symmetrically with the vibration isolation assembly asthe center, the sealing assemblies and the vibration isolation assembly coaxially sleeve a pipeline, and the two end surfaces of the sealing assemblies and the vibration isolation assembly are pressedtightly. The two end part connectors are arranged at both ends of the shell correspondingly and connected with the sealing assemblies. The vibration isolation assembly comprises a first stage vibration isolation group, the first stage vibration isolation group comprises a plurality of radial stacking first stage rubber rings, and a plurality of circumferential sawtooth grooves are formed in the outer circumferential surface of the first stage rubber rings. The multi-stage elastic cabin penetrating vibration isolation device based on the rubber vibration reduction has the beneficial effects that the multiple layers of rubber rings with serrated grooves are stacked together to form a rubber ring structure with a cavity, the rubber structure is deformed by extrusion, air in the cavity further has a certain stiffness, and the multi-stage vibration isolation is realized in the radial direction.

Description

technical field [0001] The invention relates to the technical field of ship vibration reduction, in particular to a multi-stage elastic cabin penetration vibration isolation device based on rubber vibration reduction. Background technique [0002] Various mechanical equipment and pipelines are one of the main noise sources of ships. If the vibration is not effectively isolated, the vibration will be transmitted to the bulkhead to cause sound radiation, which will affect its acoustic stealth performance. The elastic penetrating vibration isolation structure is an installation part of the hull bulkhead, which is mainly used for the part where the pipeline penetrates the bulkhead. The elastic penetrating vibration isolation structure is used as a pipeline connection and a hull bulkhead reinforcement, and it also has vibration isolation capabilities compared to other bulkhead installations. However, the traditional elastic penetrating vibration isolation structure mostly uses a...

AI Technical Summary

Problems solved by technology

However, the traditional elastic penetrating vibration isolation structure mostly uses a structure filled with solid rubber and damping material between the pipeline and the inner hole of the penetrating part. The stiffness of this vibration isolation structure is completely determined by the size and elastic modulus of the rubber material. , the stiffness may be further reduced, the vibration isolation effect is average, it is difficult to effectively isolate the vibration from being transmitted to the outside; and the sealing performance is poor, it is difficult to achieve an effective seal between the pipeline and the bulkhead

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