From the current Trailer development history, China's highway transportation industry has gone through the previous barbaric development stage and entered a new development process. We can see the advantages of airbag suspension and disc axle to analyze the development trend of trailers in China.

At present, the truck industry in European and American countries develops relatively early. At present, trailers in developed countries are basically air bag suspension + disc brake bridge, mainly because the safety has been greatly improved. Air bag suspension can not only protect the chassis, but also effectively reduce the damage to the overall frame of the trailer.

At present, the new national standard gb7258-2017 compulsorily installs air suspension and disc axle for three axle rail cars and warehouse grid semi trailers, which shows that the country really wants to govern the freight industry. Three axle rail cars and warehouse grid semi trailers account for more than 50% of trailers produced in China, except for some special vehicles for special purposes, Other goods, such as three axle railcar and warehouse grid, can basically meet the demand.

Lightweight airbag suspension with adjustable height:

1. Generally speaking, airbag suspension is to use airbag instead of common steel plate. A sealed air tank is filled with compressed air to realize shock absorption of the vehicle by using the compressibility and elasticity of the gas. You can think of it as a ball. We can squeeze it hard, inflate or deflate it, and can withstand tons of pressure.

2. High comfort and good shock absorption effect: the airbag suspension uses compressed air to realize soft connection. It can relieve most of the impact from the road and reduce the bumpy ride on the awesome road. Not only is it comfortable to ride and ride, but it also provides great protection for goods, especially high value-added items, such as precision instruments, express delivery, tank cars, cold chain transportation, and so on.

3. Lighter weight: now that the new national standard has been implemented, only legally and legally licensed trailers can go further. After determining the load capacity according to the axle standard quota, lightweight is what major manufacturers should do. Airbag suspension must be lighter than steel plate suspension. A set of air suspension is at least more than 100 kg lighter than steel plate suspension, which can effectively increase the weight of goods.

At present, the disc brake axle + air suspension system launched by Darong axle is very comfortable and suitable for highway transportation. It can not only protect the chassis system and tires of the trailer, but also prolong the service life of other parts on the trailer with the support of the air suspension system.

In the long run, the use cost of the trailer is similar to that of the previous plate suspension and drum brake system, so now the state has gradually eliminated the drum brake on the premise of ensuring safety. Now it is only a three-axle rail car and warehouse fence trailer, which may cover other Trailer models in the later stage.