| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow a power supply system with a simple constitution to receive supply of AC power, even for the power supply system for a travel cart, constituted of a plurality of power supply devices. Ž<P>SOLUTION: A carrying cart 4 runs to receive supply of AC power from trolley lines 5 or 6. The carrying cart 4 is provided with a drive source 9 driving various sections by AC power, a front electrode collector 7a and a back electrode collector 7b for collection AC power, a power supply line 13 for supplying the AC power collected with electrode collectors 7 to the drive source 9, and an electromagnetic switch 8 for supplying the AC power from either one of the electrode collectors 7 to the drive source 9. When the back electrode collector 7b collects electricity, the electromagnetic switch 8 allows the AC power of the back electrode collector 7b to be supplied to the drive source 9 and cuts off the supply of the AC power from the front electrode collector 7a. When the back electrode collector 7b passes through a non-feeding section X, the electromagnetic switch 8 allows the AC power collected from the front electrode collector 7a to be supplied to the drive source 9. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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