Why national policies also support semi-trailers equipped with air suspension
I believe that many people are familiar with air suspension springs, especially those who play with cars. In fact, air suspension is not only used on high-end cars, but also works well on semi-trailers.
In the GB7258 "Technical Conditions for Motor Vehicle Operation Safety" promulgated by the state, it is mentioned: "The rear axle of dangerous goods transport trucks with a total mass greater than or equal to 12,000 kg, all dangerous goods transport semi-trailers, and three-axle fence-type and warehouse-type semi-trailers should be equipped with air suspension." It can be seen that the semi-trailer is also recognized by the state for equipping air suspension airbags. As for why it is recognized by the state, let's take a look together.
Semi-trailers equipped with air suspension can protect freight safety to the maximum extent. The adjustment of air springs can ensure that the height of the car box is constant, and can reduce the sloshing of liquid caused by bumps, reduce the impact on the tank body, protect freight safety, and increase the service life of tank trucks. Using air suspension can effectively reduce tire wear and reduce fuel consumption. According to statistics, under the same road conditions and cargo load, the fuel consumption per 100 kilometers is reduced by more than 1.2 liters. The air suspension system can more effectively absorb the vibration caused by uneven roads, reduce the distortion and impact of the vehicle during driving, and thus provide better protection for axle parts, tires, frames, boxes, etc.
