With the national road management vehicle transporter, the new type of vehicle in the central axle trailer more and more appear in front of us, then what is the difference between the central axle trailer and the drawbar trailer? What are the pros and cons of this vehicle? Let's look at the comprehensive analysis of the central axle trailer and the drawbar trailer!

1. Middle axle trailer-axle bridge in the middle of the trailer

The definition of the central axle trailer is not difficult to understand, according to the literal meaning of understanding, is to put the bridge in the middle of the trailer. For example, a trailer with two axles, put both axles in the middle of the trailer, this is a central axle trailer.

The drawbar trailer is a trailer with two axles on both sides of the vehicle, which can maintain balance independently. So as long as you look at the position of the trailer axle, you can distinguish the central axle or the drawbar trailer.

2. The two kinds of trailer traction hook position is different

The drawbar trailer and the middle axle trailer are connected to the main vehicle in different positions. The drawbar trailer is connected to the main vehicle by a traction hook mounted on the main vehicle frame, while the traction hook connected to the main vehicle by the middle axle trailer is located under the frame (indirectly connected to the frame).

Because the axle bridge of the central axle trailer is located in the middle, the main trailer of the traction central axle trailer should bear part of the weight of the trailer, but this proportion is generally not too large, the main weight is still on the central axle. However, the drawbar trailer only bears the horizontal action from the trailer, without bearing the vertical weight of the drawbar trailer. This is also a difference between drawbar trailer and middle axle trailer.

3. The drawbar trailer front axle with steering instability driving trouble reversing

The drawbar trailer is mainly composed of carriage, axle, bogie and traction device, in which the front axle and bogie and traction device are combined as a whole, which can be turned along with the direction of the tractor. In addition, the traction device can move up and down, and because of this, the tractor only plays the role of traction, does not bear the weight of the trailer, so the trailer can not rely on the tractor firmly "stand" on the road.

The downside is obvious. It's very troublesome to reverse. The driving skill of the driver is very strictly, even more difficult than semi reversing several orders of magnitude.

However, the number of drawbar trailer is very rare now. After the 1990s, with the improvement of road facilities and the development of expressways, the problem of poor running stability of drawbar trailer has gradually become prominent. Eventually, it was banned from the highway. Now, in addition to the very individual areas of Inner Mongolia can be seen, other areas have basically disappeared.

4. Middle axle trailer is more stable and easy to reverse

Look back on the current up-and-comer in the purchase shaft, although the appearance and all hang very much like, but actually completely different. First of all, the axle is concentrated in the middle of the trailer, second, it has no bogie, and the traction device does not move up and down. Because of this, part of the weight of the central axle trailer must be borne by the tractor. Once you leave the tractor, the trailer will lose its center of gravity and "collapse" on the road.

Overall, the central axle trailer is more like a semi-trailer, so it's easier to reverse than to fully mount.

The middle axle model has the advantage in driving stability that the drawbar trailer can not match, and it can legally drive at high speed. Even in the face of the current heyday semi-trailer, the central axle trailer also occupies a favorable position. In the relevant regulations, the total length of the central axle trailer is relaxed to 22 meters. In the future, the goal of the central axle trailer is to replace the van truck.