According to the current market research and various national policy adjustments, looking at the disc axle has become a trend of trailers in the future. We all know the difference between the body structure of the disc axle and the drum axle. The new national standard has been implemented since last year. The three axle rail cars and warehouse grid cars widely used in domestic trailers must be equipped with disc axle and air suspension, although it increases the purchase cost of drivers and owners, However, it is more cost-effective in road safety and vehicle transportation efficiency in later maintenance.

Trucks equipped with disc axles and air suspension have been implemented abroad for many years and have a very mature technical system. Due to China's special development situation, the country also tends to standardize and standardize the management of highway transportation industry. The advantage of disc axle is also an important reason for the government to configure trucks with disc axle. Then let's look at the five advantages of footwall axle compared with drum axle:

1. Strong heat dissipation performance: the heat dissipation of the brake pads directly exposed to the air is unmatched by the drum axle. The brake system of the drum axle is in the brake drum. The closed space leads to poor heat dissipation and serious heat attenuation. Therefore, many drum axles must be equipped with a water spraying system to cool the brakes.

2. Brake sensitivity: the brake of disc axle is much more sensitive than that of drum axle. If it is combined with ABS / EBs and other brake assist braking systems, the braking effect of trailer is better.

3. Uniform force: the disc brake force and the left and right brake forces are relatively uniform, and there will be no vehicle tire phenomenon caused by the braking force of the left and right axles of the trailer.

4. Convenient maintenance: the brake pads of the disc axle are directly outside. You can see the brake pads or other structures very intuitively. You can see whether maintenance is needed without dismantling the axle. If maintenance is needed, you only need to replace the brake pads. If maintenance is fast, it can be completed in more than half an hour. The maintenance and replacement of brake pads of drum axle is much more troublesome than that of disc axle. It is necessary to remove the outer cover of axle. It is difficult for one person to complete it independently, which is time-consuming and laborious,

5. Heat attenuation: disc brake, especially the ventilation disc with lightweight design and double-layer structure. The interior of the double-layer ventilation disc is designed with a spoiler air duct. The centrifugal effect generated when the vehicle runs at high speed can quickly take away the heat on the brake disc. Therefore, even if the axle of the ventilation disc is braked continuously, it is difficult to have the problem of overheating. If the hydraulic retarder is added, the driving safety of the trailer can be greatly guaranteed.

These are the five advantages of the disc axle, each of which is very important and can greatly enhance the driving safety of our vehicles. At present, the national standard gb7258-2017 technical conditions for safe operation of motor vehicles has been implemented, which clearly stipulates that "disc brakes shall be equipped for the front wheels of all special school buses and dangerous goods transport trucks, the front wheels of other buses with a length of more than 9m, as well as all wheels of dangerous goods transport semi-trailers and three axle barrier warehouse semi-trailers". From the new regulations, we can see that disc axle + air suspension is a clear development trend of commercial vehicles in the future, not only to improve the transportation efficiency of vehicles, but also for road transportation safety. The vehicle safety of the new national standard is greatly strengthened, which is a good thing for our drivers and can let us go home safely.