CONVEYING OVERLOAD DETECTING SYSTEM

摘要

PURPOSE: To eliminate the breakage of a signal line and improve the reliability of detecting function by detecting overload without arranging the signal line between a movable base and a main body base. CONSTITUTION: A sectionally-V-shaped groove is formed in a movable base 5. A shaft 47 perpendicular to the slide direction of the movable base 5 is provided on a carrier pawl 13. The center of an oscillation lever 49 to be in rising attitude during normal operation is supported by the shaft 47 in a rotatable manner and one end is put in internal contact with the groove. A transmission sensor 41 which has the emission side 41a in one slide direction and the receiving side 41b in the other direction is provided except at the movable portion associated with the movable base 5. A flag 55 which is arranged between the emission side 41a and the receiving side 41b to interrupt incident light is provided at the other end of the oscillation lever 49.