What are the criteria for heavy vehicle classification?
Heavy duty vehicles: class M and class N vehicles with a maximum mass greater than 3500Kg. An automobile train consisting of a heavy tractor and a heavy trailer. Large cargo for carrying size and weight over highway traffic regulations.
A single plate trailer can be assembled vertically and horizontally to form a variety of variants to accommodate large shipments of different weights and sizes. There are usually three variations:Combined flat trailer. One or several single plate trailers are spliced together in the required length.
Overhead trailer. A hydraulic lifting platform is added to each of the two flat trailers before and after separation, and a load bridge is installed between the two lifting platforms to make the front and rear trailers, lifting platforms and the load bridge connected together. The loading bridge is the loading part. Bridge trailers are used for larger shipments than for large ones. In addition, the single plate trailer as matrix, also can be composed of other forms, such as clamp type concave flat bed trailer, trailer, semi-trailer gooseneck, suitable for different use requirements.
Trailer. The two flatbed trailer one after the goods according to the long supporting positions require separate proper distance, the installation of the bearing frame can rotate the bearing position is fixed at both ends of the long goods before and after the two flatbed trailer on the bearing frame, so that the goods and vehicles to form a whole.