水泥自上料搅拌车有时会出现以下几种故障。本文将介绍常见的故障类型，分为四种，来看看吧。

The cement self loading mixer sometimes has the following faults. This article will introduce the common fault types, which are divided into four types. Let's have a look.

其一，水泥自上料搅拌车的活塞偏心磨损，即同一活塞的一侧变尖而另一侧变细。小型泵车的活塞的局部磨损基本上与活塞的质量无关。活塞说：“这是由于输送缸和主油缸的轴不同造成的。这个锅不能扔给我。”

First, the piston of the cement self loading mixer is eccentrically worn, that is, one side of the same piston becomes sharp and the other side becomes thin. The local wear of the piston of a small pump truck is basically irrelevant to the quality of the piston. Piston said, "this is caused by the different shafts of the conveying cylinder and the main cylinder. This pot can't be thrown to me."

其二，水泥自上料搅拌车的活塞会漏出泥浆。一旦浆液泄漏，即活塞清洗室中的水开始变得浑浊，则须及时进行更换。它不能活着使用。容易使沙粒滞留在活塞环中，这很容易损坏输送缸并造成重大损失。毕竟，输送缸比一对活塞贵得多。

Second, the cement will leak out of the piston of the loading mixer. Once the slurry leaks, that is, the water in the piston cleaning room begins to become muddy, it must be replaced in time. It cannot be used alive. It is easy for sand particles to stay in the piston ring, which is easy to damage the conveying cylinder and cause heavy losses. After all, the delivery cylinder is much more expensive than a pair of pistons.

其三，水泥自上料搅拌车的活塞掉落，这很不错是质量问题。这是因为活塞材料的质量达不到标准，并且附着力不足，导致块体脱落。在这种情况下，找到制造商的补偿是的方案。

Third, the cement fell from the piston of the loading mixer, which is a very good quality problem. This is because the quality of the piston material can not meet the standard, and the adhesion is insufficient, resulting in the block falling off. In this case, finding the manufacturer's compensation is the solution.

其四，泵车的活塞正在熔化。这种故障也很常见。当使用C50及以上混凝土时，很容易发生。熔化的原因是传输滚筒太热并且热量散开了。较弱的活塞将更少。

Fourth, the piston of the pump truck is melting. This fault is also common. When C50 and above concrete is used, it is easy to happen. The reason for melting is that the transfer drum is too hot and the heat dissipates. There will be fewer weak pistons.

活塞活塞熔化故障的一步是去除活塞环末端的防尘环，以使洗涤室中的水与活塞活塞充分接触，以尽可能多地散热。如果条件允许，可以多次更换洗手间中的水，排出热水，并添加冷水以加快冷却速度。好的方法是引入长流水进行冷却，并确保一劳永逸。

The step to solve the problem of piston melting is to remove the dust ring at the end of the piston ring, so that the water in the washing room can be in full contact with the piston to dissipate heat as much as possible. If conditions permit, you can change the water in the toilet for many times, drain the hot water, and add cold water to speed up the cooling speed. A good way is to introduce long running water for cooling and ensure that it is done once and for all.

此外要注意点的事项也不少，比如：

In addition, there are many things to pay attention to, such as:

在公路上行驶时，加长溜槽必须翻转放置在卸料溜槽上用挂钩挂牢，再转与车身垂直部位，用锁紧装置把卸料溜槽和加长溜槽锁紧在机架上，防止由于不固定而摇动，造成伤人事故和影响其它车辆运行。输送混凝土的容量，质量及塌落度应符合第二章中的规定。

When driving on the highway, the extended chute must be overturned and placed on the discharge chute, hung firmly with a hook, and then turned to the vertical part with the vehicle body. The discharge chute and the extended chute are locked on the frame with a locking device to prevent shaking due to instability, causing injury accidents and affecting the operation of other vehicles. The capacity, quality and slump of transported concrete shall comply with the provisions in Chapter II.

搅拌车在露天场地停放时，装料前应先将搅拌筒反转，把筒内的积水（或雨水）和杂物卸出，以保证运送混凝土的质量。在出料斗、卸料溜槽旁工作时，要佩戴防护用品。不要接近料斗及搅拌口，也不要向内窥看，更不得用手去摸旋转的搅拌筒。

When the mixer truck is parked in the open air, the mixer drum should be reversed before loading, and the accumulated water (or rainwater) and sundries in the drum should be unloaded to ensure the quality of concrete transportation. Wear protective equipment when working near the discharge hopper and discharge chute. Do not approach the hopper and mixing port, nor look inward, nor touch the rotating mixing drum with your hands.

新车开始使用时，必须进行检查和试车，一切正常时，方可正式使用。交货时，如发现水分蒸发，塌落度偏低不能满足用户要求时，可适当向筒内加水，然后以12-14r/min的速度旋转30转后卸料。

When the new car is put into use, it must be comprehensively checked and tested. It can be officially used only when everything is normal. During delivery, if it is found that the water evaporates and the slump is too low to meet the user's requirements, water can be added to the cylinder appropriately, and then rotate at the speed of 12-14r/min for 30 turns before unloading.

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