What is the difference between wheelbase length?

Wheelbase refers to the straight-line distance between two adjacent wheels on the same side of the car, generally the distance from the center of the front axle to the center of the rear axle. Semi-trailer wheelbase is the distance between the front and rear axle of the semi-trailer.

Wheelbase is a very important parameter of semi-trailer, which determines the center of gravity position and space of semi-trailer, and is closely related to the performance of semi-trailer. The change of wheelbase will cause the change of load distribution of axle axle and axle axle, which is related to the braking, maneuverability and ride comfort of vehicle.

So what's the difference between a long wheelbase and a short wheelbase for the same semitrailer?

1. Long wheelbase.

For the tractor, the longer the wheelbase, the greater the riding space, comfort is relatively higher. While wheelbase is not the only factor that determines the space inside the car, it is the fundamental one. For the semi-trailer behind the tractor, the longer the wheelbase, the easier it is to transport the larger type of cargo, the better to load. In addition, the longer the wheelbase of the vehicle, the higher the stability of high-speed driving is relatively higher, the more stable the driving.

But the disadvantages are also obvious, the first is the vehicle flexibility problem, especially when the turn or U-turn, flexibility is not enough. Secondly, although a long wheelbase can provide a more comfortable riding space, it also easily leads to the deterioration of vehicle handling and the reduction of safety factor. In addition, a long wheelbase means vehicles require more parking space.

2. Short wheelbase.

Short wheelbase is the opposite of long wheelbase. Although the riding space is smaller, the vehicle's handling performance is improved. The compact structure reduces the turning radius and makes it more flexible and convenient to enter and exit curves or parking Spaces. At the same time, the shorter wheelbase causes the frame to be less prone to deformation when the local load is borne, and the bearing capacity is stronger. But relatively, the stability of the vehicle is not as good as the long wheelbase, especially when running at high speed, the stability is poor, and the transportation of goods is easy to be restricted.

In summary, it is the long wheelbase semi-trailer with larger riding space, wider types of transport goods and more stable running speed; Short wheelbase semi trailer is more flexible, more maneuverable, more powerful bearing capacity.

It can be seen that long wheelbase and short wheelbase each have advantages and disadvantages, which one is better, but also consider the actual use needs.

If usually run high speed, transport items to light goods, the wheelbase long semi trailer is more appropriate; If the main pull coal, sand and stone or often in the mountains, downhill, curve more road conditions driving more, the short wheelbase semi trailer is more advantageous, uphill strength is greater, turning strength is smaller.

No matter the owner chooses long wheelbase or short wheelbase, it is necessary to do a good job in the selection and screening of the trailer axle, especially the rear axle of the semi trailer is related to the bearing, braking and maintenance performance, and its quality must be guaranteed to meet the strict standards. DARO Group is one of the earliest trailer axle enterprises in China, and also the earliest mass production of integrated axle enterprises in Liangshan special vehicle production base. For 20 years, we focus on the research and development and production of cost-effective trailer axle. With reliable quality and real price, we have established a good and stable cooperative relationship with many trailer enterprises, logistics companies, transport fleets and retail investors.