Where is the lightness of a lightweight trailer?

With the promotion and implementation of weight based toll collection on highways nationwide, as well as strict overloading control measures in various regions, light body suspension is becoming increasingly popular. Many users have switched from heavy body suspension to light body suspension to create better efficiency. Generally speaking, a 13 meter light body trailer can weigh nearly 3 tons less than a heavy body trailer. So, how is the weight of a light body trailer reduced?

The main beam is made of high-strength steel

The weight reduction of lightweight hanging beams mainly uses high-strength steel, mainly T700 high-strength steel, to reduce the thickness of the upper and lower wing plates while ensuring a certain level of strength.

At the height of the main beam, the lightweight suspension should not be less than 500mm. Some manufacturers reduce the height of the main beam to 450mm, 420mm, or even 400mm in pursuit of lightweight, which is not advisable. It is also not advisable to use beam drilling for lightweighting.

There are also lightweight suspension beams that use one-time formed beams for weight reduction, and the weight reduction is very significant. Taking the 13 meter warehouse trailer beam as an example, the lightweight suspension using one-time formed beams is generally around 5.5 tons, while the lightweight suspension using high-strength steel beams is around 6.5 tons. The one-time formed beam can be lighter by nearly 1 ton.

However, the load-bearing capacity of a single formed beam is smaller than that of a high-strength steel "I-beam", and the toughness of the single formed beam is not good, which requires higher road conditions. And it cannot be overloaded, especially not concentrated for carrying.

The crossbeam adopts a "W" - shaped through beam

The weight reduction of crossbeams is mainly achieved through structural design and the use of thinner high-strength steel for weight reduction. Light weight hangers generally use thinner high-strength steel cold-formed edge beams to reduce weight, while ordinary heavy weight hangers generally use channel steel and bottom grooves.

In terms of design, lightweight trailers generally use a "W" - shaped through beam structure. Although it can effectively reduce the weight of the trailer, there is still a certain gap in load-bearing capacity compared to ordinary channel steel.

The bottom plate is made of thinner high-strength steel

The bottom plate is made of thinner high-strength steel to reduce weight. Lightweight trailers generally use 1.5mm or even 1.25mm high-strength steel as the base plate, while ordinary trailers generally use 3mm ordinary steel base plates.

The leaf spring adopts 4 lightweight leaf springs

In terms of leaf springs, the lightweight suspension adopts 4 thick and lightweight leaf springs, while the ordinary heavy suspension generally uses 10 leaf springs, which can reduce the weight by about half on the leaf springs.

Reduce the grade of steel materials such as box boards

Lightweight suspension is mainly achieved by reducing the thickness of steel on the side beams of the carriage and the side panels of the carriage. For example, on the side beams of the carriage, the ordinary hanging of channel steel used 16 # national standard steel, and the lightweight hanging was replaced with 14 # channel steel or bent parts.

● Epilogue:

In fact, there are four main aspects to lightweighting trailers: 1. The actual load range has become smaller and more stable (such as the previous heavy trailer weighing 100 tons, now the light trailer only holds 50 tons); 2. Improve the material grade of steel plates (using high-strength HT700 steel); 3. Optimize design to achieve lightweight (such as the use of W-beams and through-hole design); 4. The use of lighter accessories (single tires, disc brake bridges, air suspension, aluminum alloy aperture, etc. can also be used on heavy body suspensions, which were not mentioned earlier).

Having said all of this, I believe everyone can also see that light body trailers are to some extent "reduced configuration" models compared to heavy body vehicles, and have stricter requirements for users' usage. Users must pay attention when purchasing a car, and when determining the configuration of the car, they must explain their working conditions to the technical personnel of the trailer manufacturer.