Axle refers to the cylinder connecting two wheels on the vehicle and fixing them on the vehicle to bear the weight of the vehicle body. Each pair of left and right wheels are connected by axles. Take a simple example:

For example, the above figure is an axle with relatively simple structure. Of course, the structure of semi-trailer axle is much more complex. It is generally installed and used in the form of axle assembly, that is, the axle we often say. The axle not only needs to bear the weight of the body, but also needs to bear the functions of braking and maintaining the driving of the vehicle, so its performance is particularly important for driving safety.

If you know what an axle is, the wheelbase is easier to understand.

Axle base of semi-trailer refers to the distance from the center of front axle to the center of rear axle, passing through the centers of two adjacent wheels on the same side of the vehicle and perpendicular to the longitudinal symmetry plane of the vehicle.

The wheelbase of semi-trailer can be divided into fixed wheelbase, bogie wheelbase and full wheelbase:

1. Fixed wheelbase refers to the horizontal distance between the axle center lines at the front and rear ends in the main frame of frame type vehicle. In order to pass through the curve, the fixed wheelbase should not be too long.

2. Bogie wheelbase refers to the distance between axle centerlines at both ends of a bogie.

3. Full wheelbase refers to the horizontal distance between the axle center lines at the front and rear ends of the vehicle, that is, the distance from the front axle to the rear axle. It is the main parameter affecting the "turntable length" of the train.

For semi trailers, what is the difference between the length of wheelbase?

1. Long wheelbase

(1) Advantages:

The longer the wheelbase, the larger the turning radius, and the more stable the vehicle driving;

The longer the length of the semi-trailer, the more convenient it is to transport larger types of goods;

To a certain extent, the riding space can be expanded, and the comfort can generally be improved.

(2) Disadvantages:

The longer the wheelbase, the more inflexible the vehicle turns;

Although the riding space is comfortable, the handling is poor and the safety factor is reduced;

It requires more parking space, and long wheelbase means more parking space.

3. Short wheelbase

(1) Advantages:

The wheelbase is short, the vehicle is more flexible, and it is more convenient to enter and exit the curve or park in the parking space;

Short wheelbase, good sportiness and strong handling.

(2) Disadvantages:

Poor stability at high speed;

Transportation of goods is restricted.

As the most widely used model in the transportation industry, semi-trailer plays a very important role, which requires that the axle quality of semi-trailer must be strictly qualified. Especially on the premise that the current lightweight trend is prevalent, we must not blindly sacrifice the bearing performance of the axle in order to achieve the purpose of weight reduction, otherwise once the axle breaks in the process of full load, the consequences will be unimaginable. When car owners buy axles, especially lightweight axles, they must choose regular manufacturers. They must not trust the publicity gimmick of three no products.

Darong heavy industry group is one of the axle / axle enterprises that started earlier in China. It is also the first axle enterprise in Liangshan to mass produce integrated axle body. Through independent innovation, Darong heavy industry group has developed new appearance, new technology and new process to overcome the problem of lightweight. While reducing the self weight, the bearing capacity increases instead of decreasing, so as to fully meet the use needs of vehicle owners. All axles / axles produced by Darong group have gone through 15 precise and rigorous production processes, with reliable quality for decades. In terms of price, Darong group always insists on giving back to users at the most reasonable price, and has won a good reputation among users with its ultra-high cost performance.