As shown in FIG 7, in the lifting assembly 46a on {TAIL ~ the opposite side} of {HEAD ~ the trailer} 20, the DC motor 132 is eliminated 
As shown in FIG 7 , in the lifting assembly 46a on { TAIL ~ the opposite side } of { HEAD ~ the trailer } 20 , the DC motor 132 is eliminated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH