1. The vehicle is overloaded for a long time. Vehicle accessories are generally designed according to the load of the vehicle, and the leaf spring is no exception. If the vehicle often transports goods that exceed the rated load, or there are often partial loads, the leaf spring will appear during use. Excessive bending stress greatly weakens its fatigue strength. Therefore, in the daily use of the vehicle, in order to extend the service life of the leaf spring, legal transportation and uniform loading are essential. If the vehicle is often in a state of heavy load or partial weight, it is necessary to consider modifying the leaf spring of the original vehicle to enhance the force bearing capacity of the leaf spring and prolong the service life.
2. Excessive driving speed. When the driving speed of the vehicle is too high, the inertia of the vehicle body and cargo will increase, especially on rough road conditions. Excessive speed will cause the acceleration fatigue of the leaf spring, which will inevitably accelerate the damage of the leaf spring in the long run. Develop good driving habits, properly control the driving speed, and keep the vehicle at different economic speeds according to different road conditions, not only to ensure driving safety, but also to save fuel and reduce the loss of parts.
3. The turning speed is too high. When the vehicle passes through the turning section, it will generate outward centrifugal force, and the load pressure of the outer leaf spring will be stronger than that on the straight section. The faster the vehicle speed, the greater the load on the leaf spring, and the easier it is to cause The leaf spring is damaged. It is recommended that car owners slow down when cornering, which is not only safe, but also reduces the loss and failure of vehicle accessories, protects the cargo, reduces cargo damage, and improves operating income. 4. Frequent emergency braking Frequent emergency braking is also one of the reasons for the premature damage of the leaf spring. When the vehicle brakes in an emergency, the body and cargo will continue to move forward under the action of inertia, causing excessive bending stress and tensile stress to the front leaf spring. Once the stress range is exceeded, the leaf spring may break and be damaged.
