輪胎鼓脹和開裂

Tire bulging and cracking

鼓包形成后輪胎的壓縮能力會變得非常不均勻，因此應及時用輪胎拆卸機更換輪胎。許多輪胎爆炸是由于維修人員用撬棍或其他工具敲擊輪胎鼓造成的。攪拌車的大胎壓為10kg/cm2，相當于30層樓高水柱底部的壓力。假設輪胎氣壓為每平方厘米5公斤，氣體瞬間爆炸。短距離內產生的沖擊波足以擊碎人體骨骼。

After the bulge is formed, the compression capacity of the tire will become very uneven, so the tire should be replaced with a tire remover in time. Many tire explosions are caused by maintenance personnel hitting the tire drum with crowbars or other tools. The large tire pressure of the mixer truck is 10kg/cm2, which is equivalent to the pressure at the bottom of the 30 story high water column. Assuming that the tire pressure is 5 kg per square centimeter, the gas will explode instantly. The shock wave generated in a short distance is enough to break human bones.

小心使用輔助起動開關

Use the starting aid switch carefully

維修時經常使用自動上料攪拌車上的輔助起動開關。但是，當輔助起動開關短路時，必須確保變速箱處于空檔，否則卡車將掛檔行駛，如果駕駛室沒有司機，將造成嚴重后果。

The auxiliary start switch on the automatic feeding mixer is often used during maintenance. However, when the auxiliary start switch is short circuited, it must be ensured that the transmission is in neutral, otherwise the truck will drive in gear. If there is no driver in the cab, serious consequences will be caused.

雖然有些發動機ECU需要接收空檔開關信號，但有些型號的空檔開關仍然短路，因此建議在使用輔助起動開關時檢查檔位。隨著電控發動機的普及，發動機的維修變得越來越復雜，油管接頭的拆卸需要更加細致的操作。

Although some engine ECUs need to receive the neutral switch signal, some models of neutral switch are still short circuited. Therefore, it is recommended to check the gear when using the auxiliary start switch. With the popularization of electronic control engine, the maintenance of engine becomes more and more complex, and the disassembly of oil pipe joint needs more careful operation.

配備高壓共軌的柴油機工作時，大內部燃油壓力可達2000巴以上。產生的壓力相當于攪拌車壓在釘板上。如果傷人，后果不堪設想。好的方法是等待發動機完全停止并完成泄壓，然后拆下油管。

When the diesel engine equipped with high-pressure common rail works, the internal fuel pressure can reach more than 2000 bar. The generated pressure is equivalent to the pressure of the mixer on the nail plate. If you hurt people, the consequences will be unimaginable. A good method is to wait for the engine to stop completely and complete the pressure relief, and then remove the oil pipe.

隨意打開水箱蓋有隱患

Open the water tank cover at will, which has hidden dangers

發動機過熱運行，散熱效率差，會造成水箱發熱甚至沸騰。此時要避免立即熄火（熄火后散熱器會停止工作），找一個安全的地方停車，保持發動機怠速運轉，以充分散熱。

The engine is overheated and the heat dissipation efficiency is poor, which will cause the water tank to heat up or even boil. At this time, avoid immediate flameout (the radiator will stop working after flameout), find a safe place to stop, and keep the engine idling to fully dissipate heat.

在水箱溫度降到安全水平之前，不要打開水箱蓋，否則會噴出未冷卻的液體。正確的方法是用濕毛巾包住水箱蓋，慢慢打開第一個開關（約1/4圈），待蒸汽壓力完全釋放后再打開水箱蓋。

Do not open the water tank cover before the water tank temperature drops to a safe level, otherwise uncooled liquid will be ejected. The correct method is to wrap the water tank cover with a wet towel, slowly open the first switch (about 1/4 turn), and then open the water tank cover after the steam pressure is completely released.

注意輪胎的正確安裝方法。

Pay attention to the correct installation method of the tire.

安裝輪胎時，應盡量使用專用工具，并在安全的環境下操作。一些專車司機擔心安裝輪胎時螺絲不夠牢固。他們經常用撬棍把它固定住。這不僅會損壞螺釘，而且撬桿反彈可能會傷害操作員。

When installing the tire, try to use special tools and operate in a safe environment. Some special bus drivers worry that the screws are not firm enough when installing tires. They often fix it with crowbars. Not only will this damage the screws, but the rebound of the crowbar may harm the operator.

駕駛室的提升不應含糊不清

The lifting of the cab shall not be ambiguous

在自動上料攪拌車的發動機維修過程中，經常需要將駕駛室提升和翻轉。在操作過程中，不得將駕駛室提升到末端。裝置不能工作，可能在外力作用下墜落。如果有人員在發動機位置，將會造成無法修復的損壞。

During the engine maintenance of the automatic loading mixer, it is often necessary to lift and turn over the cab. Do not lift the cab to the end during operation. The device cannot work and may fall under the action of external force. If someone is in the engine position, irreparable damage will be caused.

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