said {HEAD ~ conveying unit} is provided with {TAIL ~ a front side frame} and a rear side frame arranged, spaced at a distance, in the back and forth direction, a support member that couples said frames together, and a conveying belt mechanism arranged between said frames, and is positioned under said support frame spaced at a distance 
is provided with
said { HEAD ~ conveying unit } is provided with { TAIL ~ a front side frame } and a rear side frame arranged , spaced at a distance , in the back and forth direction , a support member that couples said frames together , and a conveying belt mechanism arranged between said frames , and is positioned under said support frame spaced at a distance
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH