Precautions for use of disc brake airbag trailer axle

With the development of social economy and the continuous improvement of vehicle technology, the "golden combination" of disc trailer axle + air suspension has attracted more and more attention.

From the perspective of advantages, the disc brake airbag trailer axle brake is sensitive, the braking force output is linear and stable, the dead weight is light, the shock absorption effect is excellent, and it can also realize the flexible lifting of single or multiple axles to improve the ride comfort of the vehicle.

But for car owners who are used to drum trailer axles and leaf spring suspensions, the disc brake airbag bridge is not just reinstalled and replaced, and there are many differences in daily use from before. Today we will take a look together, what should be paid attention to when using the disc brake airbag bridge.

· Disc trailer axle

1. Pay attention to the matching of the main hanger

The brake response speed of the disc trailer axle is fast. If the trailer is equipped with a disc trailer axle, the braking performance of the tractor needs to reach the same level. The dynamic effect will affect the service life of parts, and it will easily lead to accidents such as tail flicking and affect driving safety.

Suggestion table for main suspension brake device matching:

2. Do not spray water to cool down

When using drum trailer axles, water spray cooling is the most common matching device, especially in mountainous areas or long downhill roads. But if the car owner is using a disc trailer axle, then water spraying to cool down must never be used again.

On the one hand, the heat dissipation and thermal attenuation resistance of the disc trailer axle are better than those of the drum trailer axle, and the heat dissipation can be realized through air flow without spraying water to cool down; on the other hand, the brake disc of the disc trailer axle is completely exposed. When it is in a high-temperature red-hot state, it is easy to cause chilling and cracking when it encounters cold water, which affects driving safety.

3. Increase the frequency of self-inspection under harsh working conditions

Because the brake disc of the disc trailer axle is exposed, it is easy to be damaged by foreign objects from the road. Owners who have watched "Flying Life" should be impressed by the stones that appear on the road during the relaxation race, so if the disc trailer axle It is used in gravel roads, mines, field and other working conditions, pay attention to check the brake disc frequently.

4. Do not overload the transport

Never overload a disc trailer axle. As we all know, although the brake response speed of the disc trailer axle is very fast, its braking force output is not as strong as that of the drum trailer axle. Therefore, many car owners will choose to install a hydraulic retarder, ABS, EBS, etc. Compensate for the disc brake's braking force deficiency. If the owner chooses a disc trailer axle, remember to follow the rated load and do not overload the transport. For car owners who often transport gravel, coal, wood, steel and other heavy goods, it is recommended not to choose a disc trailer axle.

· Air suspension

1. Pay attention when parking

The trailer airbag is easily affected by the air circuit of the trailer. When parking or reverse braking, due to the inertia of the vehicle, the rear of the vehicle may stretch upward at the moment of braking. If the owner pulls on the handbrake at the same time, the vehicle The tail will not be able to rebound, the height control valve is always in the exhaust state, and the airbag air pressure will be emptied. When the owner releases the brake, the rear of the vehicle will instantly rebound and cause the airbag to wrinkle.

Therefore, for car owners who have installed air suspension, they should pay attention when parking or reversing, slowly stop the car, and pull up the handbrake after making sure that the car has stopped.

In addition, do not park the car on the curb, and do not let the tires on the front, rear and sides of the vehicle be uneven, otherwise the airbag will be easily damaged.

2. Can not be overloaded

The shock-absorbing medium of the air suspension is air, which is incomparable with the leaf spring in terms of load bearing. It is definitely no problem to run the standard load transportation, but if you want to overload or load heavy goods, then the air suspension may not be able to do what you want. After all, the meaning of air suspension is fundamental. It's not about overloading, it's about high-value transportation.

3. Get rid of bad driving habits

Although the airbags and pistons of the air suspension are resistant to acid and alkali, they are not resistant to the friction of foreign objects and sand particles. Therefore, when facing complex road conditions such as gravel and muddy roads, remember to slow down, so as to avoid damage to the airbags caused by sand and gravel splashes, and encounter potholes on the road. It is also necessary to slow down to avoid severe turbulence from damaging the precision components in the air suspension. In addition, in severe weather such as wind, frost, rain and snow, the air suspension is also easily damaged, which requires extra attention.

4. Do a good job in daily maintenance

The air suspension uses airbags instead of leaf springs, but the internal shock absorber structure is the same as the traditional shock absorber, so daily inspection and regular maintenance are also required. It is recommended to regularly check whether there are faults and hidden dangers in the air pump, distribution valve, and pipeline interface. If there is no hidden danger but a fault code prompt is displayed, a dedicated computer should be used to conduct a comprehensive investigation, and the air bag should also be checked for abnormalities. If found, contact a professional maintenance point. Repair or replace.

It can be seen that although the disc brake airbag bridge is advanced in technology and conforms to the general trend of the industry, it is also unmatched in terms of "delicacy". If the car owner often transports green goods, flowers, electronic instruments, hazardous chemicals, fragile goods, etc., the advantages of choosing the disc brake airbag bridge outweigh the disadvantages. Although the price is higher and there are more things to pay attention to, it can be more efficient. To protect the goods well, even if you encounter poor road conditions, you are not afraid, and you can reduce or avoid damage to the goods; but if the owner often transports heavy goods, it seems that it is not suitable to choose the disc brake airbag bridge, even if it can be used barely, The frequency of maintenance and replacement may not be low. Therefore, car owners still have to consider their own working conditions comprehensively.

It is worth mentioning that the disc brake airbag bridge can also be divided into two types: American and European. It has better performance and is more suitable for the transportation environment with complex road conditions and heavy loads. Car owners can also choose the airbag bridge that suits them accordingly.