The on-board weight of container transportation is 50 tons. The national limit on container specifications (including size and weight) is 20 feet * 8 feet * 8 feet 6 inches. The external size of 20 feet container is 40 feet * 8 feet * 8 feet 6 inches, which is 40 feet; The loading weight of overweight container is 27.5 tons or 27 tons.
Container transport vehicle is a kind of transport mode that loads many kinds, different shapes and sizes of goods into special boxes of standard size before transportation, so as to facilitate water, land and air combined transport. It can realize loading and unloading, transport mechanization and standardization. It is a major reform in the traditional transport mode and an important part of the modernization of transportation. This special box is a container; The vehicle specially used to transport containers is the container transport vehicle. Since the 1960s, container transportation has developed rapidly in many countries, and now it has become an important mode of transportation in international transportation.
In the early stage of container transportation development, ordinary trucks were mostly used for transportation because of the small carrying capacity and small quantity of containers. Since the 1960s, with the rapid development of container transportation, countries have developed special vehicles to transport containers. The size of the loading part of the container truck is determined according to the size of the standard container, and a twist lock device for fixing the container is set at the position corresponding to the four corners of the bottom of the container.