Upgrading method of contact performance for test model of pantograph head with smooth profile

Abstract

In developing a pantograph of a high speed train, reducing aerodynamic noise of the pantograph is one of the most important subjects. For reducing this noise, suitable configuration of pantograph head, which has a smooth cross section profile, is investigated. However, the pantograph head with smooth cross section profile and conventional support system of contact strip sometimes wreak undesirable lift force characteristic. In this presentation, multi-segment pantograph head, which has a new pantograph head structure, is introduced to improve contact performance without deterioration of lift force characteristic. The support system is that the pantograph heads are segmented in lateral direction. This paper describes the validation result of this support system with carbon contact strip by some bench test.