Pantograph for high-speed train

The utility model discloses a pantograph for a high-speed train. The pantograph comprises a bottom frame, an upper arm, a lower arm, an upper balance rod, a lower balance rod and a pantograph head; the bottoms of the lower arm and the lower balance rod are arranged on the bottom frame; the lower end of the upper arm and the bottom of the upper balance rod are arranged on the top of the lower arm; the top of the lower balance rod is connected with the bottom of the upper arm; the bottom frame, the upper arm, the lower arm, the upper balance rod and the lower balance rod are movably connected; the tops of the upper arm and the upper balance rod are connected with the pantograph head; the bottom frame is provided with an air bag and a control valve; the control valve is connected with the air bag through a pipeline; the air bag is connected with the lower arm through a cam arranged on the bottom of the lower arm; and the pantograph head has a structure of a single sliding plate. The pantograph for the high-speed train is simple in structure, low in wearing consumption and stable in height, and guarantees that the current collection of the train in the high-speed state is stable; and the maintenance cost of the pantograph is reduced. A backstop on the bottom frame guarantees safety. When gas supply is failed accidently or gas in a gas path is leaked, the train can descend the pantograph automatically, and the whole safety of the train is improved.