The invention belongs to the technical field of aerospace, and particularly relates to an undercarriage buffer which comprises a high-pressure cavity floating piston, an outer cylinder, a low-pressure cavity floating piston and a piston rod. The high-pressure cavity floating piston is sleeved at the bottom of the outer cylinder, the outer cylinder is provided with a limiting device for limiting axial displacement of the high-pressure cavity floating piston, the piston rod is sleeved at an opening of the outer cylinder, and the low-pressure cavity floating piston is sleeved in an inner cavity of the piston rod. The high-pressure cavity floating piston and the bottom of the outer cylinder form a first cavity; the high-pressure cavity floating piston, the side wall of the outer cylinder and the low-pressure cavity floating piston form a second cavity; the low-pressure cavity floating piston and the piston rod form a third cavity; wherein the first cavity is communicated with a high-pressure gas circuit, the second cavity is filled with hydraulic oil, and the third cavity is filled with low-pressure gas; the gas cavities are arranged at the two ends of the oil cavity, oil and gas are physically isolated, and therefore oil and gas cannot be fused.
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,包括:高压腔浮动活塞、外筒、低压腔浮动活塞以及活塞杆;高压腔浮动活塞套在外筒底部,外筒具有限制高压腔浮动活塞轴向位移的限位装置,活塞杆套在外筒开口处,低压腔浮动活塞套在活塞杆具有的内腔;高压腔浮动活塞与外筒的底部形成第一腔;高压腔浮动活塞、外筒侧壁以及低压腔浮动活塞形成第二腔;低压腔浮动活塞与活塞杆形成第三腔;其中,第一腔与高压气路连通,第二腔填充液压油,第三腔填充低压气体;通过在油腔两端设置气腔,油跟气物理隔离,这样就不会油气融合。
Undercarriage buffer
一种起落架缓冲器
2024-04-02
Patent
Elektronische Ressource
Chinesisch