As an essential kind of basic construction machinery in construction engineering, the demand of self loading mixer is not only large, but also has a wide range of applications. Because the working environment of self feeding mixer is generally poor, so in the process of long-term use, there will always be tire wear problems, especially the tire partial wear is particularly serious. So, what are the main reasons for the eccentric wear of self loading mixer tire? What measures should we take to prevent and control it?

很多人認為自上料攪拌車輪胎的偏磨是車輪的外傾角超差造成的，但其實輪胎的偏磨在很大程度上是因前束值的超差造成的

Many people think that the eccentric wear of the self loading mixer tire is caused by the out of tolerance camber angle of the wheel, but in fact, the eccentric wear of the tire is largely caused by the out of tolerance toe in value

很多人認為自上料攪拌車輪胎的偏磨是車輪的外傾角超差造成的，但其實輪胎的偏磨在很大程度上是因前束值的超差造成的，根據(jù)從事四輪定位工作多年的技術(shù)人員總結(jié)的經(jīng)驗和大量的定位檢測數(shù)據(jù)分析認為：正確的前束值完全可以有效的避免輪胎的偏磨。還有一種輪胎偏磨是轉(zhuǎn)向輪較大總轉(zhuǎn)角的超差、車輪外傾角和主銷傾角的不正確導(dǎo)致的，自上料攪拌車在實際的行駛中，大多數(shù)是直線行駛的，轉(zhuǎn)彎、倒車和掉頭時的較大總轉(zhuǎn)角的時間不多，所以由此引發(fā)的偏磨比較少。

Many people think that the eccentric wear of the self feeding mixer tire is caused by the out of tolerance of the camber angle of the wheel, but in fact, the eccentric wear of the tire is largely caused by the out of tolerance of the toe in value. According to the experience of technicians who have been engaged in four-wheel alignment 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. There is another kind of tire eccentric wear, which is caused by the large total angle deviation of the steering wheel, the incorrect camber angle and kingpin angle. In the actual driving of self loading mixer, most of them drive in a straight line, and the time of large total angle when turning, reversing and turning around is not much, so the eccentric wear caused by this is less.

自上料攪拌車輪胎與地面接觸時的柔韌性和隨意變形的特性很大程度上抵消了因車輪外傾角可能造成的輪胎偏磨，即便是高壓輪胎超差的車輪外傾角對輪胎的磨損影響也不大，有很多的廂式貨車在空車的時候為了減少輪胎與地面的摩擦、降低滾動阻力而專門設(shè)計了可變后輪外傾角。

The flexibility and random deformation of the self loading mixer tire when contacting with the ground largely offset the tire eccentric wear caused by the camber angle. Even if the camber angle of the high-pressure tire is out of tolerance, it has little effect on the tire wear. Many vans are specially designed to reduce the friction between the tire and the ground and reduce the rolling resistance when they are empty Variable rear camber.

從設(shè)計上考慮，為了約束自上料攪拌車在直線行駛中車輪外傾角造成的輪胎偏磨，對攪拌車設(shè)定了特定的前束值，由于攪拌車行駛不同的路面情況和顛簸、沖撞、機件磨損等因素的存在，即使是較堅固的攪拌車，它原有的定位角度都要不同程度的因上述原因逐漸改變原前束值。有的數(shù)值一發(fā)生變化，在行駛過程中就能感覺到，比如主銷后傾角、車輪外傾角、比較嚴(yán)重的后輪前束值的改變。自上料攪拌車的輪胎還是很重要的，平時要多注意輪胎的偏磨問題，做好攪拌車輪胎的保

From the design point of view, in order to restrain the tire eccentric wear caused by the camber angle of the wheels of the self feeding mixer in the straight-line driving, a specific toe in value is set for the mixer. Due to the different road conditions and the existence of bumps, collisions, parts wear and other factors, even for the more solid mixer, its original positioning angle should be changed gradually due to the above reasons Change the original toe in value. As soon as some values change, you can feel them during driving, such as kingpin caster angle, wheel camber angle, more serious rear wheel toe in value change. The tire of self feeding mixer is still very important. Usually, we should pay more attention to the partial wear of tire, and do a good job in the maintenance of mixer tire