Aluminum alloy semi-trailer refers to the carriage, side protection, rear protection, traction seat plate, suspension, hinge, canopy bar, etc. all made of aluminum alloy materials, replacing the traditional steel structure. Aluminum alloy semi-trailer has a high popularity in Europe, America, Japan and other countries. Most steel trailers have been replaced by aluminum alloy trailers. Many Trailer enterprises in China have launched aluminum alloy semi-trailer products, but the popularity is far less than that in developed countries.

Nevertheless, the voice of aluminum alloy semi-trailer in the industry is still relatively high. Some people in the industry say that all aluminum alloy semi-trailer is "the star of tomorrow in the transportation industry". In fact, it is not unreasonable. From the general trend, resource consumption and environmental pollution have become global problems. The whole society is paying attention to how to save energy and reduce emissions. Heavy diesel vehicles are one of the sources of air pollution. How to reduce vehicle fuel consumption, improve transportation efficiency and reduce air pollution has become a concern of all countries. Aluminum alloy semi-trailer caters to the trend of energy conservation and emission reduction.

Let's first summarize the advantages of aluminum alloy semi-trailer:

1. Lightweight.

There is no doubt about this. Compared with the traditional steel structure, an obvious advantage of aluminum alloy material is its light weight. It is understood that, just for the carriage, the aluminum alloy semi-trailer can be about 3 tons lighter than the traditional semi-trailer. If the rim and suspension are included, a car can be about 3.5 tons lighter than the whole steel structure.

2. Strong transportation capacity.

This is closely related to lightweight. The weight of the vehicle is reduced by 3.5 tons, which means that the aluminum alloy semi-trailer can load 3.5 tons more goods than the steel structure semi-trailer in each operation. Someone has calculated an account. Assuming that a semi-trailer operates 150000 kilometers a year, an aluminum alloy semi-trailer can earn about 150000-180000 yuan more than a traditional steel structure semi-trailer, which is not a small income.

3. Save fuel.

Because the weight of aluminum alloy semi-trailer is reduced, the fuel consumption of aluminum alloy semi-trailer is much lower when transporting goods of the same weight, and the fuel consumption during no-load operation will also be greatly reduced. According to relevant statistics, if the market share of domestic aluminum alloy semi-trailer can reach 70%, then 7.66 million tons of fuel can be saved and 22 million tons of carbon dioxide emission can be reduced in a year.

4. Long service life.

According to the use experience of developed countries, the life cycle of an aluminum alloy tank is about 15-20 years, but the life cycle of a steel tank is only 7-9 years. In addition, from the perspective of the recovery value after the vehicle is scrapped, the recovery value of the aluminum tank is also much higher than that of the steel structure vehicle, which is also part of the income.

5. Strong safety performance.

The reduction of vehicle weight can not only improve the carrying capacity, but also help to reduce the burden of braking system, and can virtually improve the safety of long-distance transportation.

It can be seen that the advantages of aluminum alloy semi-trailer are indeed many. If analyzed comprehensively, almost all come from one factor: the reduction of self weight. Reasonably speaking, this should be an advantage welcomed by the majority of car owners. However, the implementation speed of aluminum alloy semi-trailer in China is not satisfactory. Why?

The emergence of many new things is always like a double-edged sword, with advantages and disadvantages. Aluminum alloy semi-trailer is no exception. Let's look at the disadvantages of aluminum alloy semi-trailer:

1. The manufacturing resistance is not as good as that of steel structure.

Aluminum alloy materials do have an advantage in self weight, but the corresponding is that the manufacturing resistance is not as good as that of steel structure. Especially for semi trailers, if they are transporting heavy goods such as coal, steel, sand and stone, bumps are inevitable. Can aluminum alloy materials resist such tossing? Although many car companies claim that their manufacturing resistance is reliable in publicity, it is still difficult to change the fixed impression in the hearts of car owners. In particular, China's terrain is complex and the transportation road conditions vary greatly. For example, some mountain transportation has very high requirements for the strength of vehicles. I'm afraid we have to talk about whether the aluminum alloy trailer can be suitable for such transportation conditions. It is difficult to convince the public by advertising alone.

2. Inconvenient maintenance.

After all, it is a new product. Aluminum alloy semi-trailer requires more advanced technology than traditional steel structure, such as welding. Argon arc welding is required for aluminum alloy material welding. If the equipment or technology does not meet the standard, it is likely to damage the material performance and affect the vehicle strength.

3. Relatively poor toughness.

The elasticity of aluminum alloy material is not as good as that of steel structure. I'm afraid it is more bumpy than traditional steel structure in case of bumpy road. Of course, this can be improved or made up through parts. For example, the air suspension can well improve this disadvantage. However, the high price of air suspension still makes many car owners shy.

It can be seen that the popularization of aluminum alloy semi-trailer still has a long way to go. When these problems are solved, perhaps its market share can be further improved.

The lightweight of semi-trailer has always been a concern in the industry. Replacing aluminum alloy materials is a method. In addition, it is also a way to reduce the weight of the vehicle by starting with parts. For example, the rear axle of semi-trailer, as a key component of vehicle load-bearing, its lightweight is a task to test technology and strength. Darong group is one of the enterprises that have successfully developed lightweight axles.

As a time-honored axle enterprise established for 20 years, Darong group has always spared no effort in independent innovation. As early as 2006, Darong group independently developed the domestic leading integrated axle production equipment, becoming the first enterprise to mass produce integrated axle in Liangshan special vehicle production base. Today, Darong Group actively caters to the trend of lightweight reform and develops lightweight axles from the aspects of raw materials, technology, design and technology, which can reduce the self weight of traditional axles by more than 15%. Its product lines are rich and diverse, with extensive coverage of disc axle, drum axle, low flat axle and special axle, so as to fully meet the different use needs of car owners.