Bionic anti-drag and noise-reducing high-speed pantograph

Abstract

The invention provides a bionic anti-drag and noise-reducing high-speed pantograph, belonging to the technical field of an electrified railway locomotive. The upper surface and the lower surface of a bracket rod are zigzag stripe surfaces, each zigzag stripe surface consists of a plurality of zigzag stripe unit bodies, the cross section of each zigzag stripe unit body is shaped like an isosceles triangle, and the direction of each zigzag stripe is accordant with the running direction of the pantograph. Due to the zigzag stripe surfaces on the upper surface and the lower surface of the bracket rod, the falling of the part trailing vortex is improved, the impulse pressure generated by the unsteady state air current on the surface of the bracket rod part is reduced, the aerodynamics noise generated by the bracket rod when the high-speed pantograph runs is effectively reduced, the environment interference is reduced, and the zigzag stripe surfaces are simple in manufacturing process and easy to realize.

Description

technical field [0001] The invention belongs to the technical field of electrified railway locomotives, and in particular relates to a high-speed pantograph of a bionic resistance-reducing and noise-reducing type. Background technique [0002] At present, with the increase of train speed, especially the operation of EMUs, the mechanical noise of high-speed trains takes a back seat, and the aerodynamic noise becomes more and more obvious. Among them, the aerodynamic noise of the high-speed pantograph is one of the main noise sources of the aerodynamic noise of the train. The transmission of the aerodynamic noise of the high-speed pantograph to the inside of the train will affect the ride comfort of the passengers in the train, and it will be transmitted to the outside of the train. It will bring serious noise pollution to residents on both sides of the railway. [0003] For an electric locomotive with a speed of 280km / h or more, through the comparison test of the three parts...

AI Technical Summary

Problems solved by technology

[0003] For an electric locomotive with a speed of 280km / h or more, through the comparison test of the three parts of the pantograph base, the upper and lower arms and the bow head, the results show that the aerodynamic noise generated by the high-speed pantograph head is caused by the high-speed pantograph air One of the main noise sources of dynamic noise. When the train is running at high speed, the bracket rod at the bow head causes periodic vortex shunting to generate a lot of aerodynamic noise. Therefore, this known structure cannot meet the requirements of high-speed train operation. Noise requirements, the aerodynamic noise of the pantograph severely restricts the increase of train speed

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