Concrete mixers are mainly used in engineering buildings. Their working environment is generally poor, such as heavy dust, uneven roads, etc. in such a harsh environment, the impact on mixers is very great, such as the tires of mixers. Uneven roads will accelerate the wear of tires. Some mixer drivers report that the eccentric wear of tires is serious, especially the front wheels. What the hell is going on?
Many people believe that the eccentric wear of the mixer tire is caused by the out of tolerance camber of the wheel, but in fact, the eccentric wear of the tire is largely caused by the out of tolerance toe in value. According to the experience summarized by the technicians engaged in four-wheel alignment for many years and the analysis of a large number of positioning and detection data, it is believed that the correct toe in value can effectively avoid the eccentric wear of the tire.
Another kind of tire eccentric wear is caused by the out of tolerance of the total steering wheel angle, the incorrect camber angle and kingpin angle. In the actual driving of the mixer, most of them drive in a straight line, and the total turning angle during turning, reversing and turning is not much, so the eccentric wear caused by this is relatively small.
The flexibility and random deformation of the mixer tire when contacting the ground largely offset the tire eccentric wear caused by wheel camber. Even if the camber of high-pressure tire is out of tolerance, it has little impact on the tire wear. Many Van trucks specially designed variable rear wheel camber to reduce the friction between the tire and the ground and reduce rolling resistance when empty.
From the design point of view, in order to restrict the tire eccentric wear caused by the camber angle of the mixer truck when driving in a straight line, a certain toe in value is set for the mixer truck. Due to different road conditions and the existence of bumps, collisions, parts wear and other factors, even for a solid mixer truck, its original positioning angle should gradually change the original toe in value due to the above reasons. Once some values change, they can be felt during driving, such as the change of kingpin caster angle, camber angle and rear wheel toe in.
The tire of the mixer is still very important. Pay more attention to the eccentric wear of the tire and maintain the tire of the mixer.
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