Part of the car body
The main components of the truck body include side walls (walls), end walls (walls), roofs, and the like. The steel structure of the vehicle body is composed of a plurality of longitudinal beams and transverse beams (pillars), and the vehicle body chassis is supported on the bogie by a core plate or a side bearing. The steel structure of the car body bears the weight, load and weight of the vehicle and the vertical dynamic load generated by the wheel-rail impact and the sprung vibration; the traction and compression impact generated between the vehicles when the train starts, shifts, and goes up and down the slope. Longitudinal load; and lateral loads including wind, centrifugal force, cargo pressure on the sidewall, and the like.
The bus body is an all-metal welded structure, which is welded by four parts: the bottom frame, the side wall, the roof and the end wall. A metal floor is welded to the outside of the steel skeleton. The side wall panel, the roof panel and the end wall panel form a closed casing with a rectangular upper portion and a rectangular portion, which is commonly referred to as a thin-walled tubular structure body. In addition to the longitudinal members and the transverse beams and columns, the inner surface of the casing is also replaced by a wall plate pressing method to enhance the strength and rigidity of the structure to form a reasonable structure for the overall bearing. The bus body must have good thermal insulation properties. In order to make passengers get on and off the bus, the passenger car has a passing platform at both ends, and a folding shed and a ferry plate are arranged at the outer end of the platform to prevent wind and cold and cold air from entering. In addition to the doors, windows, seats and sleepers, the car body also needs to be equipped with sanitary equipment, ventilation, water supply equipment, vehicle electrical equipment, heating equipment, broadcasting equipment and air conditioning equipment.