Hoop type double-layer vibration isolator suitable for underwater glider and method

Abstract

The invention discloses a hoop type double-layer vibration isolator suitable for an underwater glider and a method, and belongs to the field of vibration isolation and buffering of underwater vehicles. The hoop type double-layer vibration isolator comprises a first-layer O-shaped rubber vibration isolation ring, a first-layer hoop, a second-layer C-shaped rubber vibration isolation ring and a second-layer C-shaped hoop. The first layer of O-shaped rubber vibration isolation ring is sleeved on a power device cabin body. The first-layer hoop comprises three circular rings and a first connecting beam, the three circular rings are coaxially arranged on the peripheral face of the first-layer O-shaped rubber vibration isolation ring and battery cabins on the two sides in a sleeving mode respectively, and the adjacent circular rings are rigidly connected through the first connecting beam. The second-layer C-shaped rubber vibration isolation ring and the second-layer C-shaped hoop are both C-shaped rings and are coaxially coated on the peripheral surface of the first-layer hoop of the battery cabins on the two sides. According to the hoop type double-layer vibration isolator, a battery cabin part is introduced as an intermediate mass, so that the vibration isolation frequency of the system can be reduced, and the middle-low frequency band buffer vibration isolation performance below 500Hz is improved.

Description

technical field [0001] The invention belongs to the field of vibration isolation and buffering of underwater vehicles, and in particular relates to a double-layer vibration isolator in the form of a hoop suitable for an underwater glider and a method thereof. Background technique [0002] The underwater glider is a new type of underwater vehicle. The internal power device is mainly a buoyancy adjustment device and a center of mass adjustment device. It has the characteristics of low cost of use, strong endurance, high concealment and flexible control. The hydrophone is the main measurement device for the underwater glider to observe the environment. When the underwater glider is running at low speed, the hydrophone will be disturbed by the mechanical noise in the power unit, so it is necessary to reduce the transmission of the vibration of the underwater glider power unit to the position of the hydrophone. Vibration isolation system is one of the most effective methods to r...

AI Technical Summary

Problems solved by technology

The vibration isolation design of the power system of the existing underwater equipment is usually a single-layer rubber vibration isolation ring, but the vibration isolation performance of the single-layer vibration isolation system is poor in the middle and low frequency bands. In order to improve the vibration isolation performance, the stiffness of the rubber ring needs to be reduced , making the structure less stable

According to the literature search, the existing literature mainly studies the single-layer rubber vibration isolation ring, mainly by changing the stiffness of the rubber vibration isolation ring to adjust the vibration isolation frequency of the system, because the adjustment method of the single-layer rubber vibration isolation ring is only by changing The structural size and material parameters of the rubber vibration isolating ring can be realized, and the effect of thickening the rubber vibration isolating ring to achieve vibration isolation is limited due to the narrow space around the cabin. Therefore, it is usually difficult to adjust the stiffness of a single-layer rubber vibration isolating ring. Satisfies good vibration isolation requirements for low and medium frequencies below 500Hz

The double-layer vibration isolation system is an effective way to reduce the vibration isolation frequency, but in the traditional design, additional structural mass is introduced to enhance the vibration isolation effect. In the underwater glider, it is necessary to reduce the weight of the body as much as possible, and the space is compact underwater equipment The design of double-layer vibration isolation will be limited

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