The invention provides a variable air plug type buffering supporting column and a supporting column type undercarriage, and belongs to the technical field of undercarriage design. An inner cylinder in the variable air plug type buffering supporting column is installed in an outer cylinder; the throttle valve is fixed on the inner cylinder; inner cavities of the outer cylinder and the inner cylinder are air cavities; the piston rod is assembled in the outer cylinder through a supporting sleeve, an extension limiting cylinder and a supporting ring from top to bottom, the supporting ring is a spherical joint bearing, the extension limiting cylinder supports the supporting sleeve, and the supporting sleeve and the supporting ring support the piston rod in the upper and lower positions; the supporting sleeve limits the piston rod through the limiting nut, and all the assembled assemblies are integrally fixed and limited through the fixing nut. After the buffering supporting column is compressed for a stroke, the boss makes contact with the lower end face of the supporting sleeve, and the piston rod drives the supporting sleeve to move together. The clamping stagnation phenomenon of the buffer supporting column of the outward-falling supporting column type landing gear can be improved, and the design requirement of the outward-falling supporting column type landing gear is met.
本发明提供一种可变气塞式的缓冲支柱及支柱式起落架,属于起落架设计技术领域,该可变气塞式的缓冲支柱中内筒安装在外筒内;节流阀固定在内筒上;外筒和内筒内部腔体为气腔;活塞杆通过自上而下的支撑套、伸长限制筒、支撑环装配在外筒内,支撑环为球形关节轴承,伸长限制筒对支撑套进行支撑,支撑套和支撑环对活塞杆进行上、下两处支撑;支撑套通过限位螺母对活塞杆进行限位,装配后的各组件通过固定螺母进行整体固定和限位;活塞杆设有凸台,在缓冲支柱压缩一段行程后,凸台与支撑套的下端面接触,活塞杆带动支撑套一起运动。本发明可改善外撇支柱式起落架缓冲支柱的卡滞现象,适配外撇支柱式起落架的设计要求。
Variable air plug type buffer strut and strut type undercarriage
一种可变气塞式的缓冲支柱及支柱式起落架
2025-01-03
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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