The principle of concrete tank truck is the same as that of concrete mixing bucket, but it is just pulling the mixing bucket with the truck and mixing while walking. When you get to the destination, you can put down the concrete! Under normal circumstances, the concrete in the tank car will not set, because whether the vehicle is running or stopped, as long as there is concrete in the mixing tank, the mixing tank must always maintain low speed rotation. During transportation, the drum speed is about 4 ~ 8 revolutions per minute. There are several advantages to keep rotating: as long as the concrete is not separated, the concrete collapse degree is guaranteed! Secondly, the mixing function makes the concrete more uniform!

混凝土罐車和普通汽車的不同之處就在于液壓傳動系統(tǒng)，因?yàn)榛炷凉扌枰~外動力驅(qū)動旋轉(zhuǎn)，這個就是液壓傳動系統(tǒng)的功勞。動力源自變速箱上面的取力器，取力器驅(qū)動液壓油泵，液壓油泵通過分配器(閥組)來驅(qū)動液壓馬達(dá)旋轉(zhuǎn)，液壓馬達(dá)通過減速系統(tǒng)驅(qū)動混凝土罐旋轉(zhuǎn)。通過分配器改變液壓油的方向來改變滾筒旋轉(zhuǎn)方向，實(shí)現(xiàn)攪拌和放料。

The difference between the concrete tank car and the ordinary car lies in the hydraulic transmission system, because the concrete tank needs additional power to drive the rotation, which is the credit of the hydraulic transmission system. The power comes from the power take-off on the gearbox. The power take-off drives the hydraulic oil pump. The hydraulic oil pump drives the hydraulic motor to rotate through the distributor (valve group). The hydraulic motor drives the concrete tank to rotate through the deceleration system. Through the distributor to change the direction of the hydraulic oil to change the rotation direction of the drum, realize the mixing and discharging.

雖然旋轉(zhuǎn)可以延長混凝土初凝的時間，但是這個時間也不是可以無限延長的！混凝土罐的轉(zhuǎn)速每分鐘在4-8轉(zhuǎn)的時候混凝土初凝時間可以保持在3-5個小時左右，當(dāng)然和天氣溫度、混凝土配合比有一定的關(guān)系，如果發(fā)生堵車可以適當(dāng)提高轉(zhuǎn)速。天氣溫度過高初凝事件縮短也可以適量補(bǔ)水，但是施工方都有嚴(yán)格規(guī)定：途中禁止加水！會影響混凝土質(zhì)量，降低強(qiáng)度等。

Although the rotation can extend the initial setting time of concrete, but this time can not be indefinitely extended! When the rotation speed of concrete tank is 4-8 revolutions per minute, the initial setting time of concrete can be maintained at about 3-5 hours. Of course, it has a certain relationship with weather temperature and concrete mix proportion. In case of traffic jam, the rotation speed can be appropriately increased. If the weather temperature is too high, the initial setting event can be shortened, and the water can be replenished appropriately, but the construction party has strict regulations: no water on the way! It will affect the quality of concrete and reduce the strength.

而意外總是會發(fā)生的：罐車也會因?yàn)楣收匣蛘呤鹿什荒芗皶r的清罐，那么罐內(nèi)混凝土就會凝固！也就是所說的的:“悶罐”！這個時候只能人工清理，別無他法！而且清理耗時耗力！費(fèi)用也在萬元左右！所以有時候就能看到路邊的罐車在扔混凝土，用不完的要及時扔掉，以免在車內(nèi)凝固。

Accidents always happen: the tank car can't clear the tank in time because of faults or accidents, so the concrete in the tank will solidify! That is to say: "stuffy pot"! This time can only be manually cleaned, there is no other way! And it takes time and effort to clean up! The cost is about ten thousand yuan! So sometimes you can see the roadside tanker throwing concrete, and you should throw away the unused ones in time to avoid solidification in the car.

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