Large concrete mixer is mainly used in engineering construction, and its working environment is generally poor, such as large dust, uneven road and so on. In such a bad environment, the impact on the mixer is very large, such as the tire of large concrete mixer, the uneven road will accelerate the tire wear, the tire eccentric wear is more serious, especially the front wheel. What's going on?

很多人认为大型自上料水泥搅拌车轮胎的偏磨是车轮的外倾角超差造成的，但其实轮胎的偏磨在很大程度上是因前束值的超差造成的，根据从事四轮定位工作多年的技术人员总结的经验和大量的定位检测数据分析认为：正确的前束值完全可以有效的避免轮胎的偏磨。还有一种轮胎偏磨是转向轮zui大总转角的超差、车轮外倾角和主销倾角的不正确导致的，搅拌车在实际的行驶中，大多数是直线行驶的，转弯、倒车和掉头时的zui大总转角的时间不多，所以由此引发的偏磨比较少。

Many people think that the eccentric wear of the tire of large concrete mixer is caused by the out of tolerance of camber angle of the wheel, but in fact, the eccentric wear of the tire is caused by the out of tolerance of toe in value to a large extent. According to the experience summarized by the technicians who have been engaged in four-wheel positioning for many years and the analysis of a large number of positioning 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 steering wheel Zui's big total angle, the incorrect camber angle and kingpin angle. In the actual driving, most of the agitators are driving in a straight line, and the time of Zui's big total angle when turning, reversing and turning is not much, so the resulting eccentric wear is relatively less.

大型自上料水泥搅拌车轮胎与地面接触时的柔韧性和随意变形的特性很大程度上抵消了因车轮外倾角可能造成的轮胎偏磨，即便是高压轮胎超差的车轮外倾角对轮胎的磨损影响也不大，有很多的厢式货车在空车的时候为了减少轮胎与地面的摩擦、降低滚动阻力而专门设计了可变后轮外倾角。从设计上考虑，为了约束搅拌车在直线行驶中车轮外倾角造成的轮胎偏磨，对搅拌车设定了一定的前束值，由于大型自上料水泥搅拌车行驶不同的路面情况和颠簸、冲撞、机件磨损等因素的存在，即使是zui坚固的搅拌车，它原有的定位角度都要不同程度的因上述原因逐渐改变原前束值。有的数值一发生变化，在行驶过程中就能感觉到，比如主销后倾角、车轮外倾角、比较严重的后轮前束值的改变。搅拌车的轮胎还是很重要的，平时要多注意轮胎的偏磨问题，做好搅拌车轮胎的保养。

The flexibility and random deformation of large concrete mixer tire in contact with the ground largely offset the tire eccentric wear caused by wheel camber. Even if the wheel camber of high-pressure tire is out of tolerance, it has little impact on tire wear. Many vans are specially designed to reduce tire friction with the ground and rolling resistance when empty Variable rear camber is taken into account. From the design point of view, in order to restrict the tire eccentric wear caused by the wheel camber angle of the mixer during the straight-line driving, a certain toe in value is set for the mixer. Due to the different road conditions of the large concrete mixer driving and the existence of bumps, collisions, machine wear and other factors, that is to say, Zui solid mixer, its original positioning angle should be different degrees because of the above reasons one by one Gradually change the original toe in value. As soon as some values change, it can be felt during driving, such as caster angle, camber angle, and more serious change of rear wheel toe in value. The tires of the mixer are still very important. Usually, we should pay more attention to the eccentric wear of the tires and do a good job in the maintenance of the tires of the mixer.