The invention provides a fuselage box section structure provided with a strut type undercarriage. The fuselage box section structure comprises a front frame, a rear frame, a left beam, a right beam, an upper platform and a lower platform. Wherein the front frame, the rear frame, the left beam, the right beam, the upper platform and the lower platform are riveted to form a closed box body; the directions of the front frame and the rear frame are perpendicular to the course of the aircraft and serve as bearing frames at the bottom of the aircraft; the directions of the left beam and the right beam are parallel to the course of the aircraft and serve as bearing beams at the bottom of the aircraft; the upper platform is a floor of the aircraft, and the lower platform is an external skin of the aircraft; mounting holes are formed in the upper platform and the lower platform and serve as undercarriage connectors, and the undercarriage connectors are in clearance fit with undercarriage supporting columns; and a flange plate mounting surface is arranged at the mounting hole of the lower platform and is connected with a flange plate of the undercarriage through a bolt.

    本发明提供一种安装支柱式起落架的机身盒段结构,包括:前框、后框、左梁、右梁、上平台、下平台;其中,前框、后框、左梁、右梁、上平台、下平台铆接形成一个封闭盒体;前框和后框的方向与飞行器的航向垂直,作为飞行器底部的承力框;左梁、右梁的方向与飞行器的航向平行,作为飞行器底部的承力梁;上平台为飞行器的地板,下平台为飞行器的外部蒙皮;上平台和下平台上均设置有安装孔,作为起落架接口,起落架接口与起落架支柱间隙配合;下平台的安装孔处设置有法兰盘安装面,与起落架的法兰盘通过螺栓连接。


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    Title :

    Fuselage box section structure provided with strut type undercarriage


    Additional title:

    一种安装支柱式起落架的机身盒段结构


    Contributors:
    SUN XIGANG (author) / ZHU SHUAI (author) / QU ZHISEN (author)

    Publication date :

    2025-02-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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