| 摘要 |
PROBLEM TO BE SOLVED: To provide a lift adjusting structure in a current collector, which can adjust the lift working on the current collector by simple structure that can adjust the flow rate of air discharged from a collector shoe. SOLUTION: In executing a wind tunnel test while being set up as the entire current collector, a flowfield changes due to interference with other parts as compared with the case of executing the wind tunnel test singly in the collector shoe, so there is necessity to adjust the lift working on the current collector into an appropriate value. For this reason, there is necessity to adjust the flow rate of air discharged from an air discharge port 11. For example, when the lift in the direction of raising the collector shoe 8 works on this collector shoe 8, a flow rate adjuster 13B with the bore of its nozzle small 13b is mounted in the air discharge port 11, and it is adjusted to decrease the flow rate of the air discharged from this air discharge port 11. As a result, the lift in the direction of raising the collector shoe 8 drops, and the lift working on the current collector 3 is set to an appropriate value. COPYRIGHT: (C)2006,JPO&NCIPI
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