Title:
PANTOGRAPH
Document Type and Number:
Japanese Patent JP3935285
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pantograph capable of restraining contact fluctuation with a trolley line within a specified range when the fluctuation is caused by the change in lift of a shoe in a pantograph having a wing-shaped shoe capable of reducing air noise.
SOLUTION: A pantograph 3 is equipped with a shoe 13, which is pressed against a trolley line 1 via a slide plate 11, and air holes 21, 31 are formed to let the air in and out on a front edge of the shoe. The air holes 21, 31 are made in the upper and the lower part of the front edge of the shoe, and connected with air tubes 23, 33 in the shoe 13. Throttle valves 25, 35 are installed in the respective air tube 23, 33, and can adjust the amount of the air from the respective air holes 21, 31. the shoe 13 is pivotally fixed around a shaft, and the position of aerodynamical force center of the lift generated in the shoe 13 can be adjusted by operating the adjusting means.
Inventors:
Mitsuru Ikeda
Application Number:
JP6951599A
Publication Date:
June 20, 2007
Filing Date:
March 16, 1999
Export Citation:
Assignee:
Railway Technical Research Institute
International Classes:
B60L5/20; B60L5/26; (IPC1-7): B60L5/26
Domestic Patent References:
| JP7020002U | ||||
| JP9028003A | ||||
| JP5130706A | ||||
| JP7212908A | ||||
| JP5113102A |
Attorney, Agent or Firm:
Atsushi Watanabe