How to distinguish the semi-trailer is several lines and several axes?

In the field of road transport in China, a kind of vehicle with high transport efficiency, low transport cost, and more types and quantities of goods is widely used, that is, semi-trailer, especially in medium and long-distance transport, plays an extremely important role.

According to the different types of goods transported, the semi-trailer can be divided into plate, grid, van, skeleton, tank, container, dump, plate, car transport and many other types.

According to the different load of transport goods, the tonnage of the semi-trailer is also different, from a few tons to more than ten tons to dozens of tons, hundreds of tons, etc., are also there. Under normal circumstances, the more the number of trailer axles, the greater the load capacity.

How many axles does a semitrailer have?

The number of axles of ordinary semi-trailers varies from one to six axles, but the application range of three-axis semi-trailers is the widest and usually the most seen.

How to see the semi-trailer is how many axes? In fact, it is very simple, look at the picture above, you may also understand, that is, from the side count, how many groups of tires are installed on the semi-trailer, a group of tires represents an axle.

According to the new GB1589 standard, the maximum load limit of the cargo vehicle is 49t, that is to say, the maximum load of the six-axis semi-trailer is 49t. Then we mentioned above, those transport hundreds of tons of semi-trailers are how many axes?

Strictly speaking, these semi-trailers are not the same as ordinary semi-trailers, which belong to special special models, mainly used for the transportation of large non-removable goods, which can not be used for the transportation of ordinary goods. For example, three-line six-axis semi-trailer, four-line eight-axis semi-trailer, five-line ten-axis semi-trailer, six-line twelve-axis semi-trailer, seven-line fourteen-axis semi-trailer, etc.

These semi-trailers basically belong to the "big MAC" in the industry, and the transport weight limit is far more than the ordinary semi-trailer, such as the three-line six-axis can generally allow the transport of large goods within 80t, the four-line eight-axis can allow the transport of large goods within 100t, the five-line ten-axis can allow the transport of large goods within 120t, and so on.

How to see how many axles such a semi-trailer has installed? Please look at this picture below:

This is a three-line six-axis semi-trailer, that is, three rows of wheels are installed on the semi-trailer, a row of wheels are tied for two axles, a total of six axles, which is the origin of the name "three-line six-axis".

Similarly, the semi-trailer with nine lines and 18 axles below has a total of nine rows of wheels from the side, and two axles are installed side-by-side in a row, for a total of 18 axles. And so on.

You can also see that such large transportation special semi-trailer tires are particularly many, like three-line six-axis, a total of three rows of wheels, a row of two axles, two tires installed at each end of an axle, a total of twenty-four tires. Like the number of axles is a little more, the number of tires is more, so such a semi-trailer is also called "crawling" in the industry. The reason why so many tires are designed is that this semi-trailer is too heavy, the damage to the road is too strong, and the pressure on the road is reduced by increasing the contact area between the tire and the road surface.

The axle of the semi-trailer seems to be insignificant, but it actually bears the full load of the body cargo, in addition to ensuring the driving of the vehicle, but also cooperate with the braking system of the tractor to maintain sensitive, stable and good braking performance. Therefore, whether the performance of a semi-trailer is stable depends largely on whether the trailer axle is selected correctly.

DARO Group is a long-established company specializing in the production of trailer axles and accessories, has accumulated more than 20 years of industry experience, its DARO axles are specially designed for heavy-duty semi-trailers, "one-piece" heat treatment and forming process, shaft beam, brake drum/brake disc, friction plate, etc., higher thickness and greater strength. It can maintain stable and good performance output under heavy load to meet the needs of various semi-trailers.