公开(公告)号：JP2014003847A

公开(公告)日：2014-01-09

申请号：JP2012138787

申请日：2012-06-20

申请人： Railway Technical Research Institute ,  公益財団法人鉄道総合技術研究所

发明人： MITSUMOJI TAKESHI ,  SATO YUICHI ,  IKEDA MITSURU

IPC分类号： B60L5/26

摘要： PROBLEM TO BE SOLVED: To provide a dynamic lift adjustment structure of a current collector, which can easily adjust dynamic lift acting on the current collector by reducing aerodynamic force acting on the frame of the current collector with a simple structure.SOLUTION: A turbulent flow transition part 10 allows a laminar flow boundary layer formed on a frame surface 6e by a flow F on the frame surface 6e of a current collector 3 to make a transition to a turbulent flow boundary layer. When there is the turbulent flow transition part 10 on the frame surface 6e, the laminar flow boundary layer on the frame surface 6e makes a transition to the turbulent flow boundary layer, and the flow F is disturbed by the turbulent flow transition part 10, causing active momentum exchange. Thus, the flow F is hardly separated from the frame surface 6e, and the separation of the flow F from the frame surface 6e is retarded. As a result, a separation point of the flow F is moved backward to the downstream side so that Karman vortices generated behind a frame 6 are weakened, and aerodynamic force Lacting on the frame 6 is reduced. Thereby, dynamic lift Lacting on the current collector 3 is adjusted.

摘要翻译： 要解决的问题：提供集电器的动态升力调节结构，其可以通过以简单的结构减小作用在集电器的框架上的空气动力来容易地调节作用在集电器上的动态升力。解决方案：湍流 过渡部分10允许通过集流器3的框架表面6e上的流动F在框架表面6e上形成的层流边界层，以转变到湍流边界层。 当在框架表面6e上存在湍流过渡部分10时，框架表面6e上的层流边界层向湍流边界层转变，并且流动F被湍流过渡部分10扰乱，导致 积极的动力交流。 因此，流动F几乎不与框架表面6e分离，并且流动F与框架表面6e的分离被延迟。 结果，流动F的分离点向后移动到下游侧，使得在框架6后面产生的卡曼涡流减弱，并且降低了在框架6上的空气动力作用。 由此，调整集电器3上的动态升程拉动。