Difference between trailer suspension and semi trailer suspension

An ordinary semi-trailer consists of a body, an axle and a suspension system. The axle and the suspension system are located at the bottom of the body. The axle is barbell shaped, and wheels are arranged at both ends of the axle, which are horizontally arranged at the bottom of the body. The suspension system is located between the body and the axle to connect the axle and the body: when the body is dragged by an external force, the axle and the suspension system are connected, The vehicle body drives the wheels at both ends of the axle to move through the suspension system.

Semi trailer leaf spring suspension (referred to as leaf spring suspension) is divided into less variable cross-section leaf spring suspension and equal cross-section multi leaf spring suspension. At present, more than 95% of heavy truck suspension systems in China are non independent suspension systems with leaf spring as elastic element and guide device. Its main advantages are simple structure, easy manufacture, convenient maintenance, mature technology and reliable operation.

Trailer suspension is a device that connects the frame of trailer with axle wheels. Its main function is to transfer various forces and moments between the wheel and the frame, and reduce and eliminate the impact load and vibration transmitted from the road through the axle to the frame, so as to improve the ride comfort of the trailer.