Working principle of full trailer

The working principle of full trailer is to pull the trailer by the power and traction device of the tractor. Full trailer refers to a trailer connected to the back of the tractor through a tow bar, and its entire weight is borne by the tractor. The tractor only provides driving force to help the trailer overcome the friction of the road, while the trailer bears all the load by itself and is only connected to the tractor through a hook.