Air suspension is a high-end configuration popular in developed countries and regions and belongs to more advanced products. In recent years, as customers have increasingly higher requirements for the stability, safety and economy of vehicles, this has led to the gradual popularization of air suspension.
So what are the advantages of air suspension? What are the common problems, I will introduce to you today.
The airbag suspension uses air spring as the elastic element and air as the elastic medium. The compressed air is fill in a sealed container. The compressibility of the gas is used to achieve shock absorption for the vehicle by using the elastic effect.
Don’t you understand? Quite simply, if you see a large bucket (airbag) on the rear axle of a truck, then this suspension is an airbag suspension.
First, light weight. The biggest advantage of air suspension is its light weight, which is much lighter than traditional leaf spring suspension.
Second, it can be lifted. Lifting can be reflected in two aspects. One is that the axle can be lifted through air suspension, which reduces tire wear and saves fuel. The next is through the manual height valve in the air suspension system, the height of the vehicle loading platform can be adjusted within a certain range, convenient for loading and unloading fuel.
Third, the fuel tank trailer runs smoothly with good shock absorption performance. Compared with lightweight vehicles, vehicles with air suspension are more stable. The height of the air spring can be adjusted automatically according to the conditions of the road, reducing vibration, which is beneficial to protecting the safety of the cargo.
Air suspension on TITAN fuel tanker semi trailer
The most common failure of an air suspension is that the airbag has no air or airbag wrinkles. The causes of these two situations are different, and the treatment methods are different. Actually, they should be treated differently.
This situation is relatively simple to check. As long as we understand the air suspension structure, where can we start.
The air suspension air source is connected by the braking system, and is stored in a special air cylinder through a pressure protection valve. Work through the filter to the core of the air suspension - the level valve, and then to the left and right airbags.
The reasons for this may be:
1. There is no air or low pressure for the air suspension special air cylinder --- in order to ensure that the braking system has sufficient pressure, when the trailer air pressure is less than 6 kg, the pressure protection valve will temporarily suspend air supply to the air suspension air cylinder;
2. The air pipe is blocked or discounted, but not air;
3. The connecting rod of the level valve falls off;
4. The level valve is damaged (this reason rarely occurs).
As long as you find the cause of the fault, it is not difficult to solve it.
The reasons for this may be:
1. When the fuel tanker trailer is being transported and hoisted, the airbag is stretched out a lot, and it is not reset properly, which causes the airbag to fold.
2. When the vehicle enters or exits the maintenance workshop or on a large slope, it may also cause individual airbags to be stretched excessively, causing airbag wrinkles.
On-site processing method:
Disconnect the rubber connector under the vertical rod of the horizontal height valve to the axle, slowly lift the rod, and after all the airbags are fully inflated, slowly lower the rod to the original position. normal status.
In addition, if such a failure often occurs during driving, it is necessary to consider adding a limit device between the axle and the frame.
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