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高速受流是电气化铁道向高速发展必然遇到的关键问题之一,良好的集电性能取决于受电弓和接触网系统之间的相互作用。接触网是一个沿线质量分配、刚度等不同时弹性系统,在受到受电弓动力作用时,其接触面有不同程度的上升、变形和振动。受电弓本身固定在一个垂直、横向加速不断变化着的运动物体(电力机车或动车)上。由于受电弓框架等各部件的重量影响,对于机车运动和接触导线的高度都不可能瞬时作出反映。因此在改善高速受流性能方面必须同时改进受电弓与接触网。
High-speed flow is one of the key problems encountered in the electrified railway to high-speed development. Good current-collecting performance depends on the interaction between the pantograph and the catenary system. The catenary is an elastic system with different mass distribution and stiffness along the line. When it receives the pantograph force, its contact surface will rise, deform and vibrate to some extent. The pantograph itself is fixed to a moving object (electric locomotive or motor car) that is constantly changing in a vertical and lateral direction. Due to the weight of the pantograph frame and other components, it is impossible to react instantaneously to locomotive movements and the height of the contact wires. Therefore, it is necessary to improve the pantograph and the catenary at the same time in improving the high-speed current-carrying performance.