| 摘要 |
A towing carriage includes a double H shaped frame having a longitudinal axis and a pair of parallel tubular members transverse to the longitudinal axis. A pair of angle irons are affixed longitudinally between the tubular members. An axle assembly is supported by axle supports affixed to the angle irons. The axle assembly includes a pair of wheels situated so that the tubular members straddle the wheels. A channel beam is affixed to the front tubular member with a downward facing channel opening. A tow bar is pivotably mounted within the channel opeing and extends longitudinally forward toward the towing vehicle. A hitch cup is provieed at the forward end of the tow bar to mate with a trailer hitch on the towing vehicle. A pivot pin passes through the tow bar and channel beam to restrain relative rotation between the tow bar and the carriage frame. In one aspect, a pair of wheel ramps are provided with mounting posts arranged to fit within the transverse openings of the tubular members. Each of the wheel ramps includes a drive up ramp leading to a wheel well for supporting the front wheels of a vehicle to be towed. The wheel ramps can be tilted, along with the carriage frame, to a loading position when the tilt pin is removed. The frame and wheel ramps tilt automatically into a generally horizontal orientation as the towed vehicle drives up the ramp. A draw bar is provided that is rotationally mounted at its front end to the front end of the tow bar and rotationally engaged, via a universal joint, at its aft end to the toward vehicle. The draw bar provides lateral or sway stability while accomodating relative movement between the towed vehicle and the towing carriage when negotiating a turn. In another aspect, a utility trailer includes a pair of base halves, each having attachment posts for mating with the tubular members of the towing carriage.
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