Common trailers can be divided into semi-trailer, full trailer and center axle trailer
What is a semi-trailer
To put it simply, the front of the car needs to bear part of the weight of the trailer, which is called a semi-trailer. A semi-trailer with wheels on the back and the front on the trailer. The trailer is required to carry a portion of the trailer's weight. The most common one is the semi-trailer.
The advantages are high stability, high speed, and large loading capacity, especially some large goods can only be pulled by semi-trailers, and other trailers are not long enough.
The disadvantage of semi-trailers is that the turning radius is too large, because the distance between the front of the car and the wheels of the trailer is too long, and the requirements for road conditions are relatively high.
2. Full trailer
A full trailer means that there are wheels in the front and rear of the trailer, and its weight is only borne by itself, and the trailer only needs to lead it to run. For example, in the truck in the picture above, the carriage towed behind it is a full trailer.
This tractor is also a standard full-trailer, because the weight of the bricks and blocks behind the whole vehicle is borne by the trailer itself, and the four-wheel tractor only needs to pull the carriage to run.
The advantage of a full trailer is that it is more flexible than a semi-trailer and has a smaller turning radius.
The disadvantage is that the requirements for driving skills are higher, the stability of the trailer is poor, and it cannot be driven at high speed.
3. Center axle trailer
Mid-mounted means to be placed in the middle, and central-axle trailer means that the axle of the trailer is installed in the middle part of the trailer. Because the two ends of the axle are connected to the wheels, its wheels are in the middle of the trailer.
For example, in the trailer in the picture above, the axle is in the middle, but I don't know how the trailer of the family car is divided. This picture is to let you see the characteristics more clearly at a glance.
The advantage of the central axle trailer is that it is flexible, can go on high speed, and the trailer has its own cargo box, and the overall length is dominant after the trailer is added. The disadvantage is that the stability is poor, and although the total length is long, there is a lot of space in the hinged part that is not available, and the transportation of ordinary goods is not dominant. car.