How is the number of axles and load of the trailer regulated?

As one of the more widely used models in the domestic logistics industry, semi-trailer plays an extremely important role in road transportation. According to the number of axles, the load limit of the semi-trailer is also different.

How to limit the number of axles and load of semi-trailer?

According to the regulations of GB1589 "Automobile, Trailer and automobile train exterior size, axle load and mass limit", the maximum allowable total mass limit of one-axle semi-trailer is 18t, the limit of two-axle semi-trailer is 35t, and the limit of three-axle semi-trailer is 40t. The maximum allowable total mass limit of two-axle drawbar trailer is 18t; The limit of one axle axle trailer is 10t, the limit of two axes is 18t, and the limit of three axes is 24t. The maximum allowable total mass limit is 27 for three-axle automobile trains, 36t for four-axle automobile trains, 43t for five-axle automobile trains, and 49t for six-axle automobile trains.

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After understanding the detailed provisions of the axle number and load of the semi-trailer, we will talk about the axle load of the semi-trailer.

Axle load refers to the load borne by the axle. Regarding the load mass of the axle load, it is generally indicated on the certificate of the vehicle that the force makes each tire wear evenly, meets the main performance requirements of the vehicle, and also takes into account the layout of the vehicle. When the axle design or installation is unreasonable, the axle load will not be evenly distributed, so that a certain part of the axle bears too much load, which affects its service life.

For the maximum allowable axle load limit of semi-trailer, GB1589 also gives clear provisions:

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