The invention relates to a trolley type undercarriage capable of rotating a frame to be folded and unfolded. The trolley type undercarriage comprises supporting column buffers, the frame, airplane wheels, damping cylinders, a double-parallelogram mechanism, a folding and unfolding actuating cylinder and a supporting rod coordination pull rod. Machine wheels are mounted in front and back of the frame. By utilizing the inherent characteristics of the motion adder of the double-parallelogram mechanism, translation and rotation of the frame are isolated from each other, so that the translation motion of the frame only drives the strut buffer to work, and the rotation motion of the frame only drives the shock absorber to work. Rigid body rotation of the frame is transmitted to the shock absorber through the double-parallelogram mechanism, and the supporting column buffer cannot be affected. In other words, the shock absorber achieves the shock absorption function and also achieves the function of folding and unfolding the landing gear, and two functions are achieved through one mechanism.
本发明涉及一种转动车架收放的小车式起落架,包括支柱缓冲器、车架、机轮、减震筒、双平行四边形机构、收放作动筒和撑杆协调拉杆;所述车架前后安装有机轮。本发明通过利用双平行四边形机构的运动加法器的固有特性,将车架的平动、转动相互隔离,使车架的平动运动只驱动支柱缓冲器工作,车架的旋转运动只驱动减震器工作。车架的刚体转动通过双平行四边形机构传递给减震器,不会影响到支柱缓冲器。也就是说减震器即实现了减震的功能,还是实现了收放起落架的作用,使用一套机构实现了两种功能。
Rotatable frame retractable trolley type undercarriage
一种转动车架收放小车式起落架
2023-05-02
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Retractable Undercarriage Safety
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