Concrete mixer is a special type of vehicle. You can't start well without driving. Improper operation of mixer will lead to overturning and excessive wear of accessories. In addition to affecting the construction and causing unnecessary economic losses, there will be more serious consequences. To drive a good mixer, you must keep the following in mind:

1.搅拌车发动机启动后，搅拌筒应低速运转约10分钟，使液压油温度上升20℃以上后方可工作。

1. After the mixer engine is started, the mixing drum should run at a low speed for about 10 minutes to make the hydraulic oil temperature rise to above 20 ℃.

2.搅拌筒应在此之前倒转

2. The mixing drum should be reversed before this

6.混凝土搅拌机运输的混凝土坍落度不得小于8厘米。从混凝土入罐到出料，温度高时不得超过2小时，雨天温度低时不得超过2.5小时。

6. The slump of concrete transported by concrete mixer shall not be less than 8 cm. From the concrete entering the tank to discharging, it shall not exceed 2 hours when the temperature is high, and it shall not exceed 2.5 hours when the temperature is low in rainy days.

7.混凝土从搅拌车中卸下前，搅拌罐应在卸下前以10-12转/分的速度旋转1分钟。

7. Before the concrete is unloaded from the mixer truck, the mixing tank shall rotate at the speed of 10-12 rpm for 1 minute before unloading.

8.混凝土搅拌车卸料完毕后，应立即用随车软管冲洗进料口、卸料斗、卸料槽等部件，粘附在车体各部分的污垢和残留混凝土，然后向搅拌筒内注入150-200升清水。在返回过程中，搅拌筒应缓慢旋转，以清洁内壁，防止残余渣附着在搅拌筒壁和搅拌叶片上，并在再次装料前排出水。

8. After the unloading of the concrete mixer, the feeding port, discharge hopper, discharge groove and other parts shall be washed with the hose on the truck immediately to remove the dirt and residual concrete adhered to each part of the car body, and then 150-200 liters of clean water shall be injected into the mixing drum. During the return process, the mixing drum should rotate slowly to clean the inner wall, prevent the residual slag from adhering to the mixing drum wall and mixing blades, and discharge water before the re loading.

9.混凝土搅拌车运输混凝土时，发动机转速应在1000-1400转/分的范围内，以确保发动机的扭矩。运输混凝土过程中，车速不得超过40/小时，以确保行车。

9. When the concrete mixer transports concrete, the engine speed should be in the range of 1000-1400rpm to ensure the torque of the engine. During the transportation of concrete, the speed shall not exceed 40 km / h to ensure the safety of driving.

10.水泥搅拌车工作结束后，应清理搅拌车内部和车体，剩余的混凝土不得留在车内。

10. After the work of cement mixing truck is finished, the inside and car body of the truck shall be cleaned, and the remaining concrete shall not be left in the truck.