There are many kinds of trailers. Their basic frame, body and walking system are basically the same as that of freight cars. The railing type carriage is usually made of thin steel plate, and the longitudinal concave prism plate is punched out on the railing plate of the carriage, which is welded with convex ribs laterally to increase the rigidity of the carriage and reduce the quality of the carriage. Welding or joining willow. The longitudinal and transverse beams of the frame are mostly grooved interface structure, and the two longitudinal beams are arranged with equal width, so that the frame has better bending resistance. 

1.The design technology of vehicle type and fence structure combined with the category of customer goods, reasonable design, to meet the load situation to fully reduce the weight of the car, simple structure, convenient disassembly, reduce investment costs for users, create more profit value.
2. Frame: space frame structure welded by longitudinal beam and integral through beam. It can balance the strength, rigidity and toughness of the frame, and has strong bearing capacity and no permanent deformation.
3. The series of semi trailer frames are all girders, and the longitudinal beams are straight or gooseneck. The web height ranges from 400 to 500, the longitudinal beam is welded by automatic submerged arc welding, the frame is shot blasting, and the cross beam is penetrated into the longitudinal beam and welded as a whole.
4. Suspension system: Adopt a new type of suspension system, high strength, strong impact resistance; each shaft load balance, system pull rod angle reasonable design, in the course of frequent bumps in operation, reduce the friction and slip distance between the tire and the ground, effectively reduce tire wear, and adjustable pull rod, adjustable wheelbase, effectively avoid the wheel The partial deflection of the tire is a phenomenon of gnaw wheel.