With the continuous development of domestic logistics and transportation industry, people put forward higher requirements for the quality of goods, and refrigerated transport vehicles are becoming more and more common.

Refrigerated semi-trailer is a kind of semi-trailer, which is similar to semi-trailer in form, except that the body is a closed box, which is mainly used in the cold chain transportation industry to transport goods with high requirements for temperature and freshness, such as fruits and vegetables, pork, seafood, eggs and so on.

Generally, refrigerated semi-trailer is mainly composed of trailer chassis, insulation compartment, refrigeration device and various accessories. According to different use requirements, ventilation device, refrigeration device, shelf, suspension device, article fixing device, etc. can be added.

Transporting goods with refrigerated semi-trailer mainly has the following advantages:

1. The temperature difference of goods is ± 1 °, and the transportation of fresh fruits and vegetables is almost zero loss, so as to improve the transportation efficiency;

2. The transportation fuel saving rate is increased by about 20%, and the transportation loss is greatly reduced;

3. The length of refrigerated semi-trailer can reach 13.5m-15m, which can load more goods and improve the comprehensive economic benefits of highway transportation;

4. The national logistics has higher and higher requirements for the quality of goods. Refrigerated trucks must be used for fresh food, and the supply of goods is relatively stable.

The selection of refrigerated semi-trailer can generally start from three parts: trailer chassis, insulation compartment and refrigeration unit:

1. Chassis selection: in addition to considering the type, weight and volume of transported goods, it is also necessary to comprehensively consider the bearing capacity and reliability of the chassis, so as to reduce or avoid use faults, so as to avoid deterioration of goods and economic losses.

2. Car body selection: focus on the water absorption, air permeability, thermal conductivity, corrosion resistance, etc. of car body materials, which need to have good sealing and thermal insulation.

3. Selection of refrigeration units: non independent units are recommended for short-distance distribution, and independent units are recommended for medium and long-distance transportation.

Compared with ordinary semi-trailer, the goods transported by refrigerated semi-trailer are usually expensive. In addition to not being placed for a long time, they are also afraid of bumping and bumping. In case of potholes and uneven roads, it is very easy to cause cargo damage due to bumping. Therefore, it is very important to choose a high-performance disc axle and air suspension.

Darong disc axle adopts lightweight design, lighter weight, full fuel saving and efficiency. At the same time, the locally strengthened square shaft beam is adopted, the section coefficient is large, and the integrated heat treatment process is added, the torsional and flexural capacity of the shaft body is enhanced, and the bearing capacity is greatly improved. With the air suspension made by Darong group with 3D molding technology, it has multiple advantages in cargo protection, driving safety and tire wear, so as to ensure the attendance rate of refrigerated trailers and improve safety performance and economic benefits.