The weight difference between different models is very large. It is meaningful to talk about lightweight only when the right model is selected. For example, long-distance heavy-load coal, fruits and vegetables are transported with fences. Van semi-trailers are suitable for the transportation of household appliances, light textile goods, etc.
First, the beam uses high-strength steel. The beam is a very critical load-bearing part of the trailer. The quality of a trailer depends largely on the quality of the beam. At present, the steel used in the trailer beam mainly includes ordinary steel, manganese steel, high-strength steel, etc. Good materials can reduce the weight of the trailer while ensuring the load. The high-strength steel beam of the fence semi-trailer is about 1 ton lighter than the ordinary beam, but the welding of high-strength steel plates requires a strict process and is more difficult.
Second, the suspension system: less leaf springs, air suspension, and the use of lightweight leaf springs can also reduce a lot of weight. For example, the fence semi-trailer using 4-piece lightweight leaf springs can reduce about 100 kilograms compared to ordinary leaf springs. The weight reduction effect of using air suspension is more obvious. It is reported that compared with ordinary leaf springs, air suspension can reduce about 500 kg, but the price is relatively expensive, and ordinary suspension is generally used for loading.
Third, tires: vacuum tires are better than ordinary steel wire tires in terms of weight reduction and heat dissipation. 12R22.5 vacuum tires are about 240 kg lighter than 11.00R20 ordinary steel wire tires. The advantages of ultra-wide vacuum tires in weight reduction are more obvious.
In addition, the reasonable optimization design and production of semi-trailers can also reduce weight to a certain extent.
