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Pantograph structure for train

A technology for pantographs and trains, which is applied in the field of rail transit, and can solve the problems of tail instability, affecting the normal operation of trains, and aerodynamic noise, so as to reduce aerodynamic noise and aerodynamic resistance, weaken the phenomenon of Karman vortex street, and improve the stability of train operation sexual effect

Pending Publication Date: 2022-04-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pantograph is often installed directly on the top of the train, and its arm structure is directly exposed to the air, so it will produce serious aerodynamic noise when the train is running, accompanied by a certain amount of aerodynamic resistance
However, most of the existing pantograph arms are cylindrical structures, and there will be a tail loss phenomenon similar to Karman vortex street in the downstream flow field, which will cause certain lateral vibration of the pantograph and seriously affect the high operating speed of the train. normal operation under

Method used

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  • Pantograph structure for train
  • Pantograph structure for train
  • Pantograph structure for train

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Effect test

Embodiment

[0025] like figure 1 As shown, the train pantograph structure of this embodiment includes a boom 1, the horizontal section of the boom 1 is an airfoil structure whose transverse width first increases along the wind direction and then gradually shrinks, and the curved surface of the leeward side of the boom 1 is along the direction of the boom 1. Axial ups and downs. Compared with the surface of the existing cylindrical structure, the airfoil section in this embodiment can effectively guide the air flow in the leeward side of the pantograph arm, adjust the tail airflow through the gradually narrowing airfoil structure on the leeward side, and delay the high-speed airflow in the power receiving area. The strong flow separation on the front and leeward sides of the bow arm weakens the Karman vortex street phenomenon at the rear of the arm and weakens the lateral vibration of the pantograph arm. like Image 6 as shown, Image 6 The above is a conventional cylindrical arm, Ima...

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Abstract

The pantograph structure for the train comprises an arm rod, the horizontal section of the arm rod is of a wing-shaped structure with the transverse width increased firstly and then gradually shrunk, and the curved surface of the leeward side of the arm rod continuously fluctuates in the axial direction of the arm rod. The pantograph structure for the train has the advantages that aerodynamic noise and resistance are reduced, and the running transverse stability performance of the pantograph is improved.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a pantograph structure for a train. Background technique [0002] When the electric rail train is running on the line, it needs to obtain electric energy from the catenary above the line to drive the train. As an important structure for obtaining energy, the pantograph has attracted much attention for its aerodynamic characteristics during train operation. The pantograph is often installed directly on the top of the train, and its arm structure is directly exposed to the air. Therefore, when the train is running, it will generate serious aerodynamic noise, accompanied by a certain amount of aerodynamic resistance. However, most of the existing pantograph arm rods are cylindrical structures, and there will be a tail loss phenomenon similar to Karman vortex street in the downstream flow field, which will lead to certain lateral vibration of the pantograph and seriously affect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L5/22
Inventor 高广军商雯斐王家斌张琰
Owner CENT SOUTH UNIV
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