| 摘要 |
<p>PURPOSE:To control the stoppage of a motor driven truck with high reliability by providing a signal AC power source for driving a stoppage control detector separately from a travel drive DC power source. CONSTITUTION:Current collectors 5a, 5b which slidably contact with powered rails 1a, 1b and a current collector 6 which slidably contacts with a signal communication rail 3 are provided at a motor driven truck 2, and a travel drive DC motor 7 is connected between the collectors 5a, 5b. A relay CR3 and a diode 15 are connected in series between an AC power source 4 and a signal communication rail 3. The relay CR3 oscillates a left side signal to a ground side controller upon closing of the a-contact CR3a of the relay CR3. A relay CR4 is excited by a stop command signal in the ground side controller. A photocoupler 12 outputs a stop signal 12a by the operation due to the energization of the photocoupler 12, and a motor driven truck 2 is stopped by opening the stopping b-contact 17 which is interposed in the power source circuit of a motor 7.</p> |
