The invention provides an asynchronous shoulder strap tightening mechanism. Two step surfaces are arranged in a shell and are used for mounting two bearings, an air cylinder, an end cover and an air inlet end cover; the groove in the shell provides a pull-out channel for the shoulder strap; the tape winding wheel is connected with the shoulder strap, the shoulder is connected with the bearing, and the fixing key is installed inside and matched with the stroke control block to form a stroke control structure; the spline shaft is fixedly connected with the screw rod, two ends of the spline shaft are matched with the stroke control block; one end of the piston rod assembly is provided with internal threads and forms a screw pair with the screw, and the outer end surface of the piston rod and the cylinder form a molded surface matching structure; an air inlet is formed in the end cover; and the shoulder straps on the two sides can be independently pulled out through the stroke control device, and the shoulder straps are synchronously withdrawn through a fuel gas during forced withdrawing so that the problem that the shoulder straps of an existing shoulder strap mechanism cannot be asynchronously pulled out and synchronously withdrawn is solved. The mechanism is convenient to implement, wide in adaptability and good in use performance.

    本发明提供了一种异步肩带收紧机构,壳体内部有两个台阶面,用来安装两个轴承、气缸、端盖和进气端盖;壳体上槽提供肩带的拉出通道;卷带轮与肩带连接,凸肩与轴承连接,内部安装固定键,固定键与行程控制块配合,组成行程控制结构;花键轴与螺杆固定连接,花键轴的两端与行程控制块配合;活塞杆组件一端带有内螺纹,与螺杆组成螺旋副,活塞杆的外端面与气缸组成型面配合结构;端盖上开有进气口。通过行程控制装置使得两侧的肩带可以独立的拉出,并在强制收回时,通过燃气将肩带同步收回,解决了现有肩带机构的肩带无法异步拉出,并同步收回的问题。本发明实施方便,适应性广,使用性能好。


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    Title :

    Asynchronous shoulder strap tightening mechanism


    Additional title:

    一种异步肩带收紧机构


    Contributors:
    WANG JIAN (author) / ZENG JIE (author) / MENG SHUAI (author) / LUO JINGWEI (author) / GUO MINGFEI (author)

    Publication date :

    2022-02-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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