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The bolster beam is a key component of the trailer suspension system, with the following main functions:

• Balance load: When the trailer travels on uneven roads or when the center of gravity of the cargo is offset, the bolster beam, through its own structural swing or elastic deformation, distributes the load evenly to each wheel, avoiding damage to individual wheels due to excessive force, and ensuring the stability of the vehicle while driving.

• Buffer and shock absorption: In conjunction with components such as springs in the suspension system, it absorbs the impact force generated by road bumps, reducing the impact of vibration on the trailer body, cargo, and chassis components, protecting cargo safety, and extending the service life of the vehicle.

• Maintain vehicle stability: When turning, braking, or accelerating, the bolster beam can suppress the tilting and shaking of the vehicle body, maintaining stable vehicle posture, improving the handling and driving safety of the trailer, which is particularly important for heavy-duty trailers.

Bolster beams are widely used in various types of trailers, such as semi-trailers and full trailers, and are important devices for ensuring the load-carrying capacity and driving stability of trailers.

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