What is the difference between a wheel axle and a half axle?

Axle is an important component of the vehicle, which directly affects the performance and cost of the vehicle. Especially for transport vehicles, suitable models, durable trailer axles can greatly improve transport efficiency, increase the owner's operating income. In general, the axle can be divided into four types: steering axle, drive axle, steering drive axle and support axle. Then, what kind of wheel axle and half axle belong to?

From the classification point of view, the wheel axle and axle bridge belong to the drive axle, but there are many different structure and performance.

Half-axle bridge, also called single-stage reduction bridge, many owners also call it the big belly bridge, because its differential shell is relatively large, the shape is similar to the big belly of the axle, hence the name. Its structure is relatively simple, the main reducer is composed of a driving bevel gear (commonly known as angular teeth) and a driven bevel gear (commonly known as basin teeth).

Because of its simple structure, so the weight is relatively light, while the failure rate is relatively low, maintenance is relatively simple. However, when the road conditions are poor, the half-axle bridge appears to be somewhat inadequate. One is that the torque is insufficient, and the other is that the excessively large differential housing affects the passing of the vehicle.

Wheel axle, also known as wheel reduction bridge, its scientific name is two-stage reduction bridge, the structure is relatively more complex, than half axle more than a group of deceleration drive wheel edge, because it is through the two-stage transmission to achieve deceleration ratio, so the differential housing is much smaller than half axle, through better, the same deceleration ratio can withstand greater input torque.

For the wheel axle, the differential housing is smaller, the ground clearance is larger, and the passability is stronger. In addition, the maximum function of the wheel reducer is to reduce speed and increase torque, so its torque is large, the driving force is stronger. Of course, there are advantages and disadvantages, first of all, its structure is more complex, transmission efficiency is relatively poor, followed by high speed driving, because the wheel reducer undertakes most of the task of speed change and torque, so the heat generated by friction between the tire and the ground are concentrated in the wheel end, resulting in poor heat dissipation conditions. In addition, the wheel axle assembly maintenance technology requirements are high, not as simple as half axle.

As for the choice of wheel axle and half axle, we should judge according to the actual use of vehicles. If the vehicle runs at high speed, the road condition is better, and the cargo is mainly loaded, then it is relatively more suitable for the axle bridge, more excellent in lightweight, not only lower fuel consumption, but also do not worry about the high temperature phenomenon of the axle head because of long-term high-speed driving; If the vehicle runs down the road more, or the road condition is more complex, the distributor is mainly heavy load, so it is more suitable for the wheel axle, small volume through high performance, escape performance is stronger.

In fact, for the semi-trailer commonly used in the logistics and transportation industry, the transaxle is mostly installed on the traction vehicle. The trailer bucket loaded with goods is generally installed with the support bridge, which does not bear the steering or driving. The main role is to bear the load, cushion the road turbulence, ensure the vehicle braking and maintain the vehicle driving. It can be subdivided into disc trailer axle, drum axle, low flat axle, three-line six-axle axle and so on. According to the different design and performance, it is suitable for different fields.

1. Axle of disc trailer.

The biggest characteristic of disc axle is lighter weight, exposed brake disc, faster heat dissipation, more sensitive and stable braking, continuous braking is not easy to appear overheating phenomenon, heat attenuation performance is more stable.

In addition to the mandatory installation of three-axle barn fence plate trailer, disc axles are mainly used in cold chain transportation, hazardous chemical transportation, precision equipment or valuable cargo transportation. Due to its relatively small braking force, the general heavy truck is recommended to use hydraulic retarder.

It is worth mentioning that disc axle is more suitable for use with hydraulic retarder, ABS/EBS system, can give full play to their respective performance, so that the vehicle to achieve the best braking effect.

2. Drum trailer axle.

The drum axle is characterized by large braking friction area, large braking force, stronger economy, and more convenient maintenance. However, due to the sealed brake drum, the heat dissipation is poor, in order to avoid heat attenuation, it is necessary to be equipped with water spraying device, continuous braking water cooling. Drum axles are generally more suitable for heavy transport vehicles.

3. Low flat axle.

Low flat axle is specially built for low flat trailer, suitable for a variety of mechanical equipment, large objects, highway construction equipment, large tank, power plant equipment, steel, vehicles and other goods transportation, its center of gravity is lower, height design is shorter than other axles, convenient for cargo loading and unloading, while convenient for vehicles through the height limit section, transportation stability is higher. Low flat axle axle with special thickened steel, higher strength, better bearing performance.

4. Three-line six-axle axle.

Three-line six-axle axle is mainly suitable for large/large transportation, this kind of cargo volume, weight is larger, generally can not be disassembled, need large or special vehicles for transportation. Three-line six-axle axle is specially customized for large transport vehicles, carrying capacity up to 80t, a large number of tires, reduce the average pressure of contact surface, reduce the damage to tires and road surface.

DARO Group is one of the first trailer axle enterprises to mass-produce integrated axles in China, and its casting technology and process are at the leading level in China. DARO Group has a 32000 square meters of standardized plant, from the next to the assembly of more than a dozen processes in accordance with industry standards and specifications, the factory axle are through the online + offline double quality inspection and ultimate performance test, reliable and reliable quality, since the establishment of always adhere to the cost-effective route, aimed at allowing users to buy a higher quality trailer axle at a more affordable price.