| 摘要 |
<p>PURPOSE:To control the speed and to detect the position of a carriage train by power supply trolley wires and a signal trolley wire by providing detecting means for detecting the polarity of a power supply line in the train. CONSTITUTION:When a carriage train 9 moves to a signal trolley 9e, a current flows to a photocoupler 29e for detecting the position of the train, and the signal is input to a carriage train service controller 26. If a forward electromagnetic contactor 33e is closed at this time, a current flows to a forward signal receiving photocoupler 20, and a forward command is input to a speed controller 13. On the other hand, if a low speed command switch 27e is closed, a current flowed to the trolley 6e is cut off. Accordingly a low speed command receiving photocoupler 22 becomes OFF, and a slow speed command is input to the controller 13. If the contactor 33e is opened, the power of a power supply trolley wire 4 is interrupted, and an electromagnetic brake is operated to stop the train 9.</p> |
