In the case of improper use or maintenance is not perfect, the use of steel spring is not long, there is damage, which is not normal, belongs to the early damage. The early damage of leaf spring is more common in the mountain area. The early damage of the steel plate spring is mainly caused by the following reasons:
(1) in the overload or partial load vehicles often used under the condition of the leaf spring is based on the vehicle load weight design, if the vehicle used in actual load greatly exceed rated load car quality, or serious partial load, steel plate spring had bending stress at work will make the resistance the fatigue strength of the steel plate spring is greatly reduced, the early damage of leaf spring.
(2) the vehicle speed is too high, especially in the high-speed road is not good, will make the steel plate spring deformation amplitude increases, the frequency increased, resulting in Baotou beiben accelerated fatigue damage of steel plate spring accessories. In this letter to the user to extend the service life of the spring plate, the vehicle should be the economic speed, in bad road at low speed.
(3) vehicles often use emergency braking. Use the emergency brake in the vehicle when driving, due to the effect of the inertia force, the spring plate especially the front spring to bear large bending stress and tensile stress, when exceeding the allowable stress, will cause the broken steel plate spring. The vehicle should be at a moderate speed in operation, the engine exhaust brake, emergency brake less.
(4) when the vehicle is turning, the speed is too high. The car will have a sharp turn, the centrifugal force is too large, will greatly increase the lateral spring load, accelerate the damage of leaf spring. In order to prolong the service life of the steel plate spring and improve the economic benefit, we should pay attention to the speed reduction when turning.
(5) Baotou beiben accessories Spring Horse bolts loose or loose center bolt, the main leaf of spring load increasing, cause early damage. Should pay attention to the maintenance of the saddle bolt, the central bolt fastening, if damaged should be replaced in time.
(6) Baotou beiben parts lubrication plate spring, damper failure, early failure will cause the leaf spring. Should pay more attention to maintenance, lubrication. Shock absorber failure should be repaired, such as damage should be replaced in a timely manner.