| 摘要 |
<p>PURPOSE:To prevent carriers from colliding each other due to an abnormal operation by stopping the following carrier when the following carrier enters into the same section trolley wire where the preceding carrier is stopped. CONSTITUTION:When a drive motor 34 is started to allow the first carrier A to abnormally start so that a current collector 14A overrides a section poit 5a into the second section trolley wire 4b, a circuit W of the first powe supply trolley wire 1, a current collector 11A, a control relay 20, a current collector 14A, the second section trolley wire 4b, a current collector 14B, the control relay 20, a current collector 12B and the second power supply trolley wire 2 is formed. When the relay 20 is energized, a relay for operating the drive motor is deenergized to stop the motor 34, and the first carrier A automatically stops driving.</p> |
