The invention belongs to the field of helicopter technical systems, and discloses a helicopter main blade folding and fixing device which comprises a blade fixing rod system and a bottom supporting rod system, and the bottom supporting rod system is fixedly installed at the bottom of the belly of a helicopter and extends out of the front end of the helicopter. The paddle fixing rod system is installed above the extending part of the bottom supporting rod system, the paddle fixing rod system extends towards the upper portion of the helicopter to form a supporting structure of the front folding paddle of the helicopter, and the bottom supporting rod system and the paddle fixing rod system are both of a high-rigidity structure; wherein the paddle fixing rod system is respectively provided with a left paddle supporting rod and a right paddle supporting rod which are used for supporting and fixing the two folded paddles. In the folding and fixing design of the main blade of a certain type of helicopter, the device is used for fixing the front folding blade of the helicopter, when the helicopter is transported, the main blade does not collide with the inner wall of a cabin of the transporter, and the design requirements for strength and rigidity are met. And meanwhile, the whole fixing device also considers the convenience of disassembly and assembly, so that daily use and maintenance are facilitated.
本发明属于直升机技术系统领域,公开了一种直升机主桨叶折叠固定装置,包括桨叶固定杆系和底部支撑杆系,底部支撑杆系安装固定在直升机的机腹底部,底部支撑杆系向直升机的前端伸出,桨叶固定杆系安装在底部支撑杆系伸出部分上方,桨叶固定杆系向直升机上方延伸形成直升机前折叠桨叶的支撑结构,底部支撑杆系和桨叶固定杆系均为高刚度结构;其中,桨叶固定杆系分别设有左右两个桨叶支撑杆用于支撑固定折叠后的两个桨叶。某型直升机主桨叶折叠固定设计中,利用此型装置对直升机前折叠桨叶进行固定,该型直升机运输时,主桨叶不会磕碰运输机机舱内壁,满足强度与刚度设计要求。同时整个固定装置还考虑了拆装的便利性,便于日常使用维护。
Helicopter main blade folding and fixing device
一种直升机主桨叶折叠固定装置
2023-09-08
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Main rotor blade fixing assembly for unmanned helicopter
European Patent Office | 2021
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