Auto mixer accessories are also an important part of the mixer. If you don't know enough about the structure and performance of the machine (especially the new operator) due to mistakes in the operation process, it is easy to cause faults and even mechanical accidents.
Poor lubrication due to the small fit clearance of newly assembled parts, and due to assembly and other reasons, it is difficult to ensure the uniformity of fit clearance. Lubricating oil (grease) is not easy to form a uniform oil film on the friction surface to prevent wear. So as to reduce the lubrication efficiency and cause the early abnormal wear of parts. In severe cases, it will cause scratch or bite on the friction surface of precision fit, resulting in failure.
The wear speed is fast. Due to the influence of processing, assembly and adjustment of new machine parts, the friction surface is rough, the contact area of mating surface is small, and the pressure bearing condition of the surface is uneven. During the operation of the machine, the concave convex parts of the part surface are embedded and rubbed with each other, and the worn metal debris continues to participate in the friction as abrasive, which accelerates the wear of the fitting surface of the part. Therefore, during the running in period, it is easy to cause the wear of parts (especially the mating surface), and the wear speed is fast. At this time, if overloaded operation, it may lead to damage of parts and early failure.
The newly processed and assembled parts are subject to geometric shape and fit size deviation. At the initial stage of use, due to the impact, vibration and other alternating loads, as well as the influence of heating, deformation and other factors, coupled with the rapid wear and other reasons, it is easy to loosen the originally fastened parts.
Leakage occurs. Due to the looseness of parts, vibration and the influence of machine heating, leakage will occur on the sealing surface and pipe joints of the machine. Some casting, processing and other defects are difficult to find during assembly and commissioning. However, due to the vibration and impact during operation, such defects are exposed, manifested as oil (water) leakage. Therefore, Leakage is easy to occur during running in period.
The automatic mixer truck is mainly used in engineering buildings, and its working environment is generally poor, such as heavy dust, uneven roads, etc. in such a harsh environment, the impact on the mixer truck is very great, such as the tires of the mixer truck. The uneven roads will accelerate the wear of the tires. Some mixer truck drivers report that the eccentric wear of the tires is serious, Especially the front wheels.
Many people believe that the eccentric wear of mixer tire is caused by the out of tolerance of wheel camber, but in fact, the eccentric wear of tire is largely caused by the out of tolerance of toe in value. According to the experience summarized by technicians engaged in four-wheel alignment for many years and a large number of positioning detection data, it is considered that the correct toe in value can effectively avoid the eccentric wear of tire.
Another kind of tire eccentric wear is caused by the out of tolerance of the total angle of the steering wheel and the incorrect camber angle and kingpin angle. In the actual driving of the mixer, most of them travel in a straight line, and the total angle of turning, reversing and turning is not much, so the resulting eccentric wear is relatively small.
The flexibility and random deformation of the automatic mixer tire when contacting the ground largely offset the tire eccentric wear caused by the camber angle. Even the camber angle of the high-pressure tire has little effect on the tire wear. There are many Van trucks when empty in order to reduce the friction between the tire and the ground Variable rear wheel camber is specially designed to reduce rolling resistance.
The tires of automatic mixer are still very important. Usually, pay more attention to the eccentric wear of tires and do a good job in the maintenance of mixer tires.