A double-layer vibration isolator in the form of a hoop suitable for an underwater glider and its method

Abstract

The invention discloses a double-layer vibration isolator in the form of a hoop suitable for underwater gliders and a method thereof, belonging to the field of vibration isolation and buffering of underwater vehicles; comprising a first layer of O-shaped rubber vibration isolators, a first layer of hoop, a first layer of The second layer of C-type rubber vibration isolator and the second layer of C-type hoop; the first layer of O-type rubber vibration isolator is sleeved on the power unit cabin; the first layer of hoop includes three rings and a first connecting beam, The three rings are coaxially sleeved on the outer peripheral surface of the first layer of O-shaped rubber vibration isolators and the battery compartments on both sides, and the adjacent rings are rigidly connected by the first connecting beam; the second layer of C-shaped rubber vibration isolation The ring and the second layer of C-shaped hoop are both C-shaped rings, which are coaxially wrapped on the outer peripheral surfaces of the first layer of hoop in the battery compartments on both sides. The invention introduces the battery compartment component as the intermediate mass, which can reduce the vibration isolation frequency of the system and improve the buffer vibration isolation performance of the medium and low frequency bands below 500 Hz.

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] Underwater glider is a new type of underwater vehicle. The internal power devices are mainly buoyancy adjustment device and center of mass adjustment device. It has the characteristics of low cost, strong endurance, high concealment and flexible control. Hydrophones are the main measurement equipment for underwater gliders to conduct environmental observations. When the underwater glider runs at low speed, the hydrophone will be disturbed by the mechanical noise in the power unit, and it is necessary to reduce the transmission of the vibration of the underwater glider power unit to the position of the hydrophone. Vibration isolation systems are one of the most effective ways to reduce the ...

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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