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1. 发明申请

WO2010129960A1 PNEUMATIC BLOW-DOWN ACTUATOR 审中-公开
标题翻译：气动吹风致动器
公开(公告)号：WO2010129960A1
公开(公告)日：2010-11-11
申请号：PCT/US2010/034261
申请日：2010-05-10
申请人： SPECTRUM AERONAUTICAL, LLC
发明人： MASON, Garth, L.
IPC分类号： B64C25/18
CPC分类号： B64C25/18 , B64C25/22 , B64C25/30 , Y10T74/18592
摘要： An electromechanical linear actuator includes a pneumomechanical back-up system to ensure extension of retractable landing gear for landing an aircraft. Structurally, the linear actuator includes a stator forming a channel for receiving a ball screw. Further, the actuator includes a ball screw housing forming a chamber for receiving the ball screw. Specifically, the ball screw and the housing are in threaded engagement to translate rotation of the ball screw into axial extension of the housing. To power electromechanical extension of the actuator, the ball screw is selectively engaged to a motor with a gear train. Importantly, fluid communication between the ball screw housing and a pressurized fluid is selectively provided by a valve. If electromechanical extension of the actuator fails, the gear train is disconnected from the ball screw and the pressurized fluid is introduced into the chamber to drive pneumomechanical extension.
摘要翻译：机电线性致动器包括气动机械备用系统，以确保用于着陆飞机的可伸缩起落架的延伸。在结构上，线性致动器包括形成用于接收滚珠丝杠的通道的定子。此外，致动器包括形成用于接收滚珠丝杠的腔室的滚珠丝杠壳体。具体地，滚珠丝杠和壳体是螺纹接合的，以将滚珠丝杠的旋转转移到壳体的轴向延伸。为了对致动器的机电延伸进行动力，滚珠丝杠选择性地与具有齿轮系的马达接合。重要的是，滚珠丝杠壳体和加压流体之间的流体连通由阀选择性地提供。如果执行机构的机电延伸器故障，齿轮系与滚珠丝杠断开，加压流体被引入腔室，以驱动气力机械延伸。

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