The semi-trailer towing device, in simple terms, is a device that connects the semi-trailer with the towing vehicle. When transporting goods, if there is no traction device, then for a semi-trailer, there is no moving force. It is just a simple cargo box. Therefore, for a semi-trailer, the traction device is also a very important component.

What roles does the traction device play in semi-trailers and what aspects of semi-trailers does it affect? Here, I will list one or two for everyone to discuss the issues related to the traction device of semi-trailers. One of the significant functions of the semi-trailer towing device is connection. A semi-trailer merely exists as a single vehicle body. Without a driver's head, it would be a tractor. Connect these two components together, and only then will it be a complete semi-trailer, a semi-trailer capable of carrying goods. If there is no tractor, then for a semi-trailer, it is just scrap iron and of little use. This also indicates what role the traction device plays for a semi-trailer.

The traction device in a semi-trailer plays a crucial role in traction. During operation, they interact with each other, leading to mutual interaction. This is the traction effect of the traction device. This traction effect can alleviate the force friction between the tractor and the semi-trailer and reduce the losses between them.

The traction device also serves the function of support. If only the semi-trailer exists, it cannot maintain the balance of the vehicle. Therefore, there is a support system in the semi-trailer. During the driving process, how to maintain the balance of the semi-trailer? This is where the towing device comes into play, transmitting the weight of the semi-trailer to the towing vehicle.