The invention belongs to the technical field of aerospace, and particularly relates to an undercarriage buffer structure outer cylinder press-fitting device which comprises an outer cylinder, a floating piston, a piston rod and an external connector. The piston rod is provided with an inner cavity and sleeved with the outer cylinder, and the floating piston is sleeved with the inner cavity of the piston rod. The floating piston, the side wall of the piston rod and the outer cylinder form a buffer cavity, and hydraulic oil and compressed air are injected into the buffer cavity according to a preset proportion. The floating piston and the piston rod form a jacking cavity, the jacking cavity is provided with an external connector, hydraulic oil is injected into or discharged out of the jacking cavity through the external connector so that the piston rod can stretch out of or retract into the outer cylinder, the outer cylinder comprises an aluminum alloy outer cylinder body and a thin-wall steel lining, and the thin-wall steel lining is installed in the aluminum alloy outer cylinder body in an interference fit mode. According to the double-layer outer cylinder, the weight of the aircraft landing gear structure is reduced; the wear resistance and the fatigue life of the buffer are improved; and the design and use cost of the aircraft is reduced.
本申请属于航空航天技术领域,特别涉及一种起落架缓冲器结构外筒压装装置,包括:外筒、浮动活塞、活塞杆以及外部接口;活塞杆具有内腔,活塞杆套在外筒内,浮动活塞套在活塞杆的内腔内;浮动活塞、活塞杆侧壁以及外筒形成缓冲腔,缓冲腔中按预设比例注有液压油以及压气体;浮动活塞与活塞杆形成顶升腔,顶升腔具有外部接口,通过外部接口将顶升腔注入或者排出液压油使活塞杆伸出或者缩进外筒,其中,外筒包括铝合金外筒以及薄壁钢衬套,薄壁钢衬套通过过盈配合的方式安装在铝合金外筒内,本申请双层外筒减轻了飞机起落架结构重量;提高了缓冲器的耐磨性及疲劳寿命;降低了飞机的设计及使用成本。
Undercarriage buffer structure and outer cylinder press fitting device
一种起落架缓冲器结构及外筒压装装置
2024-04-19
Patent
Electronic Resource
Chinese
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