principle of operation
The truck consists of four parts: engine, chassis, body and electrical system. The movement of the freight car is mainly completed by the engine and chassis, in which the chassis includes transmission system, running system, steering system and braking system.
Although there are many kinds of vehicles, their structures are similar. This should be said to be the credit of standardization and the need of large-scale production line. With the development of society, the progress of science and technology and the change of demand, the appearance of railway vehicles has also begun to change, especially the passenger cars are no longer the same old faces. However, their basic structure has not changed obviously, but the specific parts have more scientific and advanced structural design.