The tractor is a general large truck or semi-trailer that is towed by tools between the front and the trunk. That is, the front of the car can be detached from the original car and pull other car boxes, and the car box can also be separated from the original front. The front is pulled by other...
The tractor is a general large truck or semi-trailer that is towed by tools between the front and the trunk. That is, the front of the car can be detached from the original car and pull other car boxes, and the car box can also be separated from the original front. The front is pulled by other heads. The front of the car with driving capacity is called a tractor, and the rear car with no traction drive ability is called a trailer. The trailer is dragged by a tractor. There are two ways to connect a tractor and a trailer: the first is that the front half of the trailer is caught on the traction saddle above the rear section of the tractor, and the bridge behind the tractor bears part of the weight of the trailer. This is half hanging; The second type is that the front end of the trailer is connected to the rear end of the tractor. The tractor only provides forward pull and drags the trailer, but does not bear the downward weight of the trailer. This is all hanging.
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