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2. Fifth-wheel coupling - Wikipedia

   en.wikipedia.org/wiki/Fifth-wheel_coupling

   The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin, a 2-or- -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel ...

3. Drawbar (haulage) - Wikipedia

   en.wikipedia.org/wiki/Drawbar_(haulage)

   A large ballast tractor pulling a load using a drawbar. General duty tow hitch from VBG on a truck and a drawbar on a trailer, showing a connected drawbar eye. Rockinger drawbar coupling, in which the drawbar eye gets locked. A drawbar is a solid coupling between a hauling vehicle and its hauled load. Drawbars are in common use with rail ...

4. Tow hitch - Wikipedia

   en.wikipedia.org/wiki/Tow_hitch

   A tow ball mounted on the rear of a vehicle. A screw-on tow hook mounted at the front of a vehicle. A tow hitch (or tow bar or trailer hitch in North America [ 1 ]) is a device attached to the chassis of a vehicle for towing, or a towbar to an aircraft nose gear. It can take the form of a tow ball to allow swiveling and articulation of a ...

5. Trailer (vehicle) - Wikipedia

   en.wikipedia.org/wiki/Trailer_(vehicle)

   A fifth-wheel coupling is also referred to as a kingpin hitch and is a smaller version of the semi-trailer "fifth wheel". Though a fifth wheel and a gooseneck trailer look much the same, their method for coupling is different. A fifth wheel uses a large horseshoe-shaped coupling device mounted 1 foot (0.30 m) or more above the bed of the tow ...

6. Caravan (trailer) - Wikipedia

   en.wikipedia.org/wiki/Caravan_(trailer)

   A fifth-wheel trailer tows more securely than a traditional travel trailer because the hitch weight sits directly over the pickup truck's rear axle or tires. Since part of a fifth wheel sits in the bed of the pickup, it reduces the overall length of the vehicle-and-trailer combination while allowing the same room as a comparable-length travel ...

7. Oshkosh M1070 - Wikipedia

   en.wikipedia.org/wiki/Oshkosh_M1070

   The M1000 has 40 wheels (215/75R 17.5 tires) across five axle lines, these with two half-width axles per line. Each axle has hydraulic pendular suspension, providing a 254 mm stroke, with lateral oscillation accommodating surface undulations. A hydraulic suspension system is provided on the pivoting gooseneck to equalise fifth wheel loads. The ...