Windbreak cover and aerodynamic noise reduction structure of the pantograph

摘要

(57) Abstract Objective With reduction of aerodynamic force sound of pantograph, high speedFor run when car height is made low in, the windbreak cover ourDecrease of the aerodynamic force sound which is generated from the body is assured. Constitution Front and back of pantograph 20 on vehicle roof 17It climbs from roof 17 facing toward pantograph 20 gradientTo form the gentle slope 4,6 which it possesses, the top of this gentle slope 4,6The windbreak cover 1 which surrounds around pantograph 20 in the section providingru. Windbreak cover 1 front and back respectively the projection arm of left and right pairTo possess section 1a and 1b, the pantograph 20 approaching at that timeBe able to provide the tilt slant face 2,3 whose width size is small to position, the projection armFrom inside of section 1a and 1b in left and right both sides edge of tilt slant face 2,3 reachingThe ru air current guide face 8,8 is formed. As for gradient of gentle slope10 - 20, tilt slant face 2,3 of windbreak cover 1 and airGradient of the flow guide face makes approximately 45.