The national energy axle line design takes the carriage bogie, traditional pattern and carriage as inspiration points to extract and optimize the use of bogie, traditional pattern and carriage elements. The door head can distinguish different plant functions and the maintenance areas represented by different elements are different. The axle line is designed with a large slope shape, which fully possesses the characteristics of force and quantity, and fits with the characteristics of the industry. Each machine on the axle line is designed with light prompts, which can effectively display the working status of the machine and avoid unnecessary damage. The color is marked with orange, which is not only beautiful in appearance, but also warned. It is used as a warning line. The color and element use of the axle line are unified. The whole axle line looks clean and tidy, which conforms to the industry attributes and adds a sense of design to the axle line.