Simply put, the whole trailer is connected with the truck in front with a hook. 1, the semi-trailer is connected with the traction belt seat of the tractor according to the traction belt pin; 2. Common container transport vehicles are common semi-trailer trains, and the rear part is semi-trailer; 3. The main uses are also different. Full trailers are mainly used for short-distance transportation in factories, ports, docks, warehouses and other areas, while semi-trailers are mainly used for long-distance freight transportation. There are many kinds of full trailers, and their basic frame, body and running system software are basically the same as those of trucks. Flat cars are usually made of cold-rolled steel plates. In order to improve the bending stiffness of the automobile and reduce the quality of the automobile, lateral concave side plates are punched on the automobile side beams and transverse reinforcing ribs are welded. The floor of the carriage is generally made of wood, covered with cold-rolled steel plates or a mixed structure of iron and wood. Usually, the frame is made of 16mn steel plate, pressed into profiles and welded or welded. Slotted pages are mostly used in the longitudinal beams and cross beams of the frame, and the front and rear longitudinal beams are arranged with equal width, which makes the frame have better bending performance.

Million car purchase subsidy