公开(公告)号：US20150159332A1

公开(公告)日：2015-06-11

申请号：US14103738

申请日：2013-12-11

申请人： voestalpine Nortrak Inc.

发明人： Gary CLICK ,  Brent DUFFNER ,  Bradley SMITH ,  Martin WEBB

IPC分类号： E01B7/14

CPC分类号： B61L5/04 ,  E01B7/14

摘要： A controller for a spring wing on a frog that utilizes a floating piston rod carrying a fixed piston valve and a free-moving piston head is provided. When the piston rod is actuated by the opening movement of the spring wing, the piston valve separates from the piston head briefly, allowing oil to flow through the piston head in a relatively unrestricted manner. The piston head is spring biased towards the piston valve; upon contact between the piston head and the piston valve, the oil flow through the piston head stops, helping to hold the spring wing in the open position. When the spring wing begins to close, the adjustable oil flow through the controller allows the piston rod to move at a controlled rate, thereby controlling the closure rate of the spring wing.

摘要翻译： 提供了一种用于青蛙上的弹簧翼的控制器，其利用携带固定活塞阀和自由移动活塞头的浮动活塞杆。 当活塞杆由弹簧翼的打开运动致动时，活塞阀短暂地与活塞头分离，使得油以相对不受限制的方式流过活塞头。 活塞头朝向活塞阀弹簧偏压; 在活塞头和活塞阀接触之后，通过活塞头的油流停止，有助于将弹簧翼保持在打开位置。 当弹簧翼开始关闭时，通过控制器的可调节的油流可以使活塞杆以受控的速度移动，从而控制弹簧翼的关闭率。