Is the trailer air bag bridge good or the steel plate bridge good?

Trailer suspension is used to connect the frame and axle components, the main role is to transmit the force and force torsion between the wheel and the frame, buffer the impact of the road to the body, and maintain the smooth running of the vehicle. After the vehicle is installed with suspension, it can not only ensure the driving stability, but also help the vehicle to cope with complex road conditions, and achieve a certain degree of balance between comfort and operational performance.

At present, the most widely used suspension on ordinary trailers in China is steel plate suspension, which accounts for almost 80%. But to say that the most discussed in the industry, but also to air suspension. As a type of suspension that has been named and forced to be installed by relevant departments on some models, air suspension also continues to develop and grow with its unique advantages.

So the question is: if you can choose the type of suspension to install, plate suspension and air suspension, which is better?

Let's take a quick look at the two suspensions.

Steel plate suspension, the full name is a series of steel plate spring balance suspension, commonly known as leaf spring, steel plate bridge, mainly by the leaf spring, suspension support (commonly known as lifting lug), connecting rod, U-bolt and other parts, the longitudinal force of the body directly falls on the axle.

The air suspension, also known as the air bag bridge, is mainly composed of a compressor, an air reservoir, a height control valve, an air spring, a control rod, etc., in addition to a shock absorber, a guide arm, a transverse stabilizer bar, etc. One of the most obvious features is its airbag type air spring, as an elastic element, the air spring can be from the road impact load, through the trailer axle to the body to moderate, in addition to achieve automatic body height adjustment.

Compared with air suspension, the most obvious advantages of plate spring suspension are simple structure, low cost and maintenance costs, stronger rigidity, and higher carrying capacity; The disadvantage is that its own weight is too large, which increases the weight of the vehicle, and the layout space is also large.

Correspondingly, the advantages and disadvantages of airbag bridge are also relatively clear. Its main advantages are its own light weight, can reduce the body weight, smoothness is better than the steel plate bridge, excellent shock absorption performance, and because the air medium friction in the air bag is small, there is almost no noise when working, the service life can reach 2-3 times that of the leaf spring, and the shock absorption performance is better. The disadvantage is that the structure is more complex than the steel plate bridge, the maintenance and replacement cost is higher, and it is not suitable for transporting heavy goods. In addition, some owners said that the air bag bridge is as bumpy as the steel plate bridge when the car is empty, aging is also fast and easy to damage.

Back to the question of "air bag bridge is good or steel bridge is good" just now, any argument that puts aside the actual use needs and conditions of the vehicle to simply evaluate which kind of suspension is better is playing rogue, because "the honey of a, the arsenic of B" is better for yourself.

Just like the steel plate suspension, it is indeed its own high quality and poor shock absorption performance, but it is suitable for those heavy trailers whose goods are not afraid of bumping, such as trailers transporting wood, steel coil, coal, sand and gravel, and it is suitable for steel plate Bridges. Another example is the airbag bridge, although the maintenance cost is high, the load-bearing performance is also less than the steel plate bridge, but those who transport dangerous goods, flowers, vegetables, fruits, electronic instruments, fragile goods and other trailers are suitable for installing the airbag bridge, because the shock absorption performance is good, the cargo damage is small, and the freight is less.

It should be noted that although the two suspension has its own advantages and disadvantages, from the perspective of the industry trend in recent years, the airbag bridge or will become the national standard focus on the promotion direction, as for the steel plate bridge will slowly be eliminated, perhaps depends on whether the shortcomings of the airbag bridge can be gradually overcome with the improvement of production technology.