The axle is one of the three power core assemblies of semi-trailer, which is a vehicle structure connecting the preceding and the following. In addition to bearing the weight of the vehicle body, it also has the functions of driving the vehicle and braking. The axle is also called the axle, and its function is to transmit the forces in all directions between the frame and the wheels. The function of semi-trailer bridge is to bear the load of the vehicle and maintain the normal driving of the vehicle on the road. Do you know the material of semi-trailer axle?
The semi-trailer axle may be made of low-alloy steel, but there should also be manganese steel or spring steel. The rear axle is the bridge behind the car. The rear axle is only one assembly, which is composed of several parts, including castings, forgings, all metals and materials, as well as seals. Some are metal materials and some are non-metallic materials.
According to the difference of driving modes, the trailer axle is also divided into four categories: steering axle, drive axle, steering drive axle and support axle. The steering axle and support axle belong to the driven axle. Most cars use front rear drive (FR), so the front axle is used as the steering axle and the rear axle as the drive axle; The front axle of the front front drive (FF) vehicle becomes the steering drive axle, and the rear axle acts as the support axle.
Standards and requirements for semi-trailer axles
Axle and suspension are important components of automobile trailer. The semi-trailer bridge is connected to the frame by suspension. The wheels are installed at both ends of the semi-trailer bridge, which is used to transmit the forces and moments between the frame and the wheels in all directions. According to the difference of suspension structure, the axle can be divided into integral type and disconnected type. According to the difference of front beam shape, it can also be divided into I-shaped section and tubular section axle. I-shaped section axle is widely used at this stage, and its strength is large, The shape is easy to meet the requirements of the general layout.
The semi-trailer axle has its own standards and requirements: in the trailer axle, the axle inside the brake drum should have sufficient strength and stiffness to safely and reliably bear the force between the wheel and the frame; Ensure that the kingpin and the steering wheel have the correct positioning angle, so that the steering wheel can move stably, and the positioning angle of the steering wheel can remain unchanged. The shimmy of the steering wheel shall be small. The non hanging weight shall be as small as possible.
The semi-trailer axle can safely and reliably transmit various forces and moments between the vehicle body and the wheels. While meeting the requirements of small parts quality, it must also ensure sufficient strength and service life.
