PURPOSE: To detect the abnormal state of division line even when a freight car stops halfway because of sudden disturbance, by detecting the line fullness in terms of the speed of conveyors and a signal of a section freight car detector.
CONSTITUTION: The conveyors 1, 2 are fixed to a wire rope 11 and driven by a motor 3. When the difference between the speed of an incoming freight car 7 and that of the conveyor 1 is small, the probability of contact of the conveyor 1 is with the freight car 7 is low. Even if the conveyor 1 comes into contact with the freight car 7, the variation in the speed of the conveyor 1 is small and the conveyor 1 1 conveys the car to the next section. When the freight car comes into contact with another freight car 9 stopped by an endless stop 12 and then stops, the car 8 does not move and the speed of the conveyor 2 falls down to the vicinity of zero even if the conveyor 2 comes into contact with the freight car 8. Then, when the conveyor 2 is disabled from operating by an instruction applied from a controller 10 on the basis of the signal of a section freight car detector 6 and speed of a speed detector 4, the other conveyor normally operates again and it can be detector 4, the freight cars are located in the section at the disabled conveyor
MORI HIROMICHI
MITSUBISHI ELECTRIC CORP