{HEAD ~ a means} for {TAIL ~ comparison} that compares a load detection value obtained based upon detection signals from said load sensors with a predetermined overload value 
for
{ HEAD ~ a means } for { TAIL ~ comparison } that compares a load detection value obtained based upon detection signals from said load sensors with a predetermined overload value
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH