| 摘要 |
PURPOSE:To produce self-traveling pallets efficiently and to save power consumption by controlling the movement of respective pallets and the distance between the pallets automatically by a transmitter and a receiver attached to each pallet. CONSTITUTION:A self-traveling pallet 1 receives ultrasonic waves, light, high frequency waves, etc. outputted from a back originating device 6 attached to a self-traveling pallet 112 through its front receiving device 7, and when the receiving level reaches a signal level corresponding to a prescribed distance between both self-traveling pallets, the device 7 outputs a speed-reduction indicating signal or a stop indicating signal to control the speed-reduction or stop of an electric motor and keep the distance between both pallets at a prescribed distance or more. When the pallet 1 reaches close to each position, a stop position checking device 9 outputs a cut-off signal A to a stop signal originating device 10 to make the device 10 originate a stop signal when the ultrasonic waves, light, high frequency waves, etc. reach the signal level corresponding to the stop position. |
