A Helicopter Ring Vibration Isolation Device

A helicopter and vibration isolation technology, which is applied in the direction of shock absorbers, mechanical equipment, vibration suppression adjustment, etc., can solve the problems of high vibration isolation initial frequency of linear vibration isolators, insufficient vibration isolation bandwidth, and affecting service life, etc., to achieve Light weight, less space occupation, good vibration isolation effect
CN110886802BActive Publication Date: 2021-08-13CHINA HELICOPTER RES & DEV INST
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA HELICOPTER RES & DEV INST
Publication Date
2021-08-13

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Abstract

The patent of the present invention relates to the field of helicopter vibration reduction / vibration isolation, and relates to a vibration isolation device structure for helicopter airborne equipment. The novel annular vibration isolation device for helicopter of the present invention comprises an upper connection plate, a lower connection plate, and several groups of vibration isolation mechanisms. The upper connecting plate and the lower connecting plate are hollow ring structures, and the several groups of vibration isolation mechanisms are arranged around the upper and lower connecting plates. The vibration isolation mechanism includes a connection support, a vibration damping plate, an adjustment spring piece, a quality block, and a connection joint. The damping plate is an arc-shaped structure whose shape matches the upper and lower connecting plates. The adjusting spring is set in the middle of the damping plate. The two ends of the sheet and the vibration damping plate are connected and fixed with the upper connecting plate through connecting joints. The invention realizes dual-frequency vibration reduction at different frequencies of vibration isolation and vibration absorption, has effective vibration isolation performance, and has high static connection stiffness at the same time, and can meet the requirements of large maneuvering flight of the helicopter.
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Description

technical field

[0001] The invention relates to the field of helicopter vibration reduction / vibration isolation, and relates to a vibration isolation device structure used for helicopter airborne equipment. Background technique

[0002] Because of its unique structural form and flight mode, the helicopter has been in a complex aerodynamic environment, resulting in a high vibration environment for the helicopter body structure and on-board equipment. With the improvement of the performance of helicopters, the requirements for airborne equipment are getting higher and higher, and the impact of high vibration levels on the performance of airborne equipment is becoming more and more obvious. Therefore, the demand for vibration reduction / vibration isolation of airborne equipment is also becoming stronger and stronger. .

[0003] According to the vibration theory, the vibration isolation effect can only be achieved when the natural frequency of the vibration-isolated object is lo...

Claims

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