正時皮帶的主要作用是用來驅動發動機的配氣機構，使發動機的進、排氣門在適當的時候開啟或關閉，來保證全自動混凝土攪拌車發動機的汽缸能夠正常地吸氣和排氣。
The main function of the timing belt is to drive the valve train of the engine, enabling the intake and exhaust valves of the engine to be opened or closed at appropriate times, to ensure that the cylinders of the fully automatic concrete mixer truck engine can normally inhale and exhaust.
在有的車型中正時皮帶還負責驅動水泵。攪拌車的皮帶屬於橡膠部件，隨著發動機工作時間的增加，正時皮帶和正時皮帶的附件，如正時皮帶張緊輪、正時皮帶張緊器和水泵等都會發生磨損或老化。
In some models, the timing belt is also responsible for driving the water pump. The belt of the mixer truck is a rubber component. As the engine working time increases, the timing belt and its accessories, such as the timing belt tensioner, timing belt tensioner, and water pump, will be worn or aged.
因此，凡是裝有正時皮帶的發動機，廠家都會有嚴格要求，在規定的周期內定期更換正時皮帶及附件，更換周期則隨著發動機的結構不同而有所不同，一般在攪拌車行駛到6萬~10萬公裏時應該更換，具體的更換周期應該以攪拌車的保養手冊說明為準。
Therefore, for engines equipped with timing belts, the manufacturer will have strict requirements to regularly replace the timing belt and accessories within the specified cycle. The replacement cycle varies depending on the structure of the engine. Generally, when the mixer truck reaches 60000 to 100000 kilometers, it should be replaced. The specific replacement cycle should be subject to the instructions in the maintenance manual of the mixer truck.
此外它的日常保養也要做好，比如：
In addition, its daily maintenance should also be done well, such as:
每次出車前應檢查液壓油位置，油位高出2～3㎝為宜；
Before each vehicle departure, the hydraulic oil level should be checked, and it is advisable to increase the oil level by 2-3 cm;
有黃油嘴的地方應每周打一次黃油，保證正常潤滑。另外拖輪和滾道結合麵處應3～4天加一次黃油，保持正常；
Places with grease fittings should be greased once a week to ensure normal lubrication. In addition, the junction surface between the tugboat and the raceway should be buttered once every 3-4 days to keep it normal;
後操縱手柄每次由攪拌變成卸料或由卸料變成攪拌都要在中間位置停頓一下，在攪拌筒停止轉動後再執行下一動作。在手柄扳到極限位置時不能繼續用力，防止油泵卡死；
Each time the rear control handle changes from mixing to unloading or from unloading to mixing, it should pause in the middle position, and then perform the next action after the mixing drum stops rotating. Do not continue to exert force when the handle is pulled to the limit position to prevent the oil pump from getting stuck;
每次收工時要將攪拌筒內外洗幹淨，保證攪拌筒內無積快。如果在工地卸料時間超過2～3小時回來時也要將攪拌筒內清洗幹淨。更多相關內容就來kaiyun網站http://www.skar-bnat.com谘詢了解吧！
At the end of each job, clean the inside and outside of the mixing drum to ensure that there is no accumulation of fast inside the mixing drum. If the unloading time at the construction site exceeds 2-3 hours, the mixing drum should also be cleaned when returning. For more relevant content, please visit our website http://www.skar-bnat.com Consult and understand!
