Low aerodynamic noise type current collection equipment

Details Low aerodynamic noise type current collection equipment Low aerodynamic noise type current collection equipment

1995-01-20

1996-10-22

Merritt, Karen

Electricity: transmission to vehicles

Collectors

Trolley

191 591, B60L 508, B60L 520

Patent

active

055667996

ABSTRACT:
Low aerodynamic noise type current collection equipment is provided for reducing variations in aerodynamic force applied to a current collector during train operation. A central region (2a) of a current collector (1) having a collector head (2) with a top surface in which a contact strip (3) is embedded is rectangular in cross-section, and each side region is shaped convex in cross-section in the front and rear directions, with e.g. an elliptical shape. The rectangular shape has characteristics such that the magnitude of the aerodynamic lift force would be kept substantially constant even if the inclination angle against the aerial flow would be changed. Accordingly, the cross-sectional shape of the central region (2a) of the current collector (1), which is liable to receive the turbulent aerial flow from the support portion (4) in the current collector (1), makes it possible to suppress the variation in aerodynamic lift force generated in the current collector even if the angle of the aerial flow that would collide against the current collector (1) would be unstable. The cross-sectional shape of each side region (2b) being made convex in the front and rear directions reduces the aerodynamic noise.

REFERENCES:
patent: 4567335 (1986-01-01), Griffiths

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