1. Before starting the mixer truck, put the mixing drum operation handle in the "stop" position.

2、起动发动机后，应使搅拌筒在低速下转动10分钟左右，使液压油温升到20℃以上后方可工作。

2. After starting the engine, the mixing drum should be rotated at low speed for about 10 minutes to make the temperature of hydraulic oil rise to above 20 ℃.

3、搅拌车在露天停放时，装料前应将搅拌筒反转，将积水和杂物排出，以保证混凝土的质量。

3. When the mixer truck is parked in the open air, the mixing drum should be reversed before loading to discharge water and debris, so as to ensure the quality of concrete.

4、在运输混凝土时，要保证滑斗放置牢固，防止因松动造成摆动，在行进中打伤行人或影响其它车辆正常运行。

4. When transporting concrete, it is necessary to ensure that the sliding bucket is placed firmly to prevent swinging due to looseness, which may injure pedestrians or affect the normal operation of other vehicles.

5、装运搅拌好的混凝土时，搅拌筒转速为2-10转/分，在运输过程中，平坦路面上搅拌筒转速保证在2-3转/分，行驶在侧倾坡度大于50的路面，或左右晃动较大的路面时，应停止搅拌旋转，待路况好转后再恢复搅拌旋转。

5. When transporting the mixed concrete, the speed of the mixing drum shall be 2-10 rpm. During the transportation, the rotation speed of the mixing drum shall be kept at 2-3 rpm on the flat road surface. When driving on the road surface with a roll gradient greater than 50, or the road with large left-right shaking, the mixing rotation shall be stopped and the mixing rotation shall be resumed after the road conditions are improved.

6、 混凝土罐车运送混凝土的时间不能超过搅拌站规定的时间。运送混凝土途中，搅拌筒不得长时间停转，以防混凝土产生离析现象。司机应时常观察混凝土情况，发现异常及时通报调度室，申请做出处理。

6. The time of concrete transportation by concrete tank truck shall not exceed the time specified by the mixing plant. During the transportation of concrete, the mixing drum shall not stop for a long time to prevent the concrete from segregation. The driver shall observe the concrete condition from time to time, report to the control room in case of any abnormality, and apply for handling.

7、车内装有混凝土时，在现场停滞时间不得超过1小时，如超时应立即要求现场负责人给予及时处理。

7. When concrete is loaded in the vehicle, the stagnation time on the site shall not exceed 1 hour. If it exceeds the time limit, the person in charge of the site shall be asked to deal with it in time.

8、混凝土搅拌车运送混凝土塌落度不得低于8cm。从混凝土入罐到排出，气温高时不得超过2小时必须排出，阴雨天气温度低时，不得超过2.5小时。

8. The slump of concrete transported by concrete mixer truck shall not be less than 8cm. From the concrete entering into 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.

9、在排出混凝土之前，应使搅拌筒在10-12转/分的转速下转动1分钟，再进行排料。

9. Before discharging the concrete, the mixing drum should be rotated at the speed of 10-12 rpm for 1 minute before discharging.

10、混凝土搅拌运输车出料完毕，应立即用随车的软管放水将进料口、出料斗及出料溜槽等部位冲洗干净，排去粘结在车身各处的污物及残留混凝土，再向搅拌筒内注水150-200L的清水，在返回途中要让搅拌筒慢速转动，以清洗内壁，避免残余料渣附在筒壁和搅拌叶上，并在再一次装料前将这些水放掉。

10. After discharging, the concrete mixer truck shall immediately flush the inlet, discharge hopper and discharge chute with the hose attached to the truck to drain the dirt and residual concrete bonded on the vehicle body, and then inject 150-200l of clear water into the mixing drum. On the way back, the mixing drum shall rotate slowly to clean the inner wall, so as to avoid the residual slag attached to the cylinder wall and mixing blades And drain the water before loading again.

11、 运送混凝土时，发动机转速在1000-1400转/分范围内工作，以使发动机有扭距，在运送混凝土过程中，车速不得超过40km/h，以保行车。

11. When transporting concrete, the engine speed is in the range of 1000-1400 rpm to make the engine have the maximum torque. In the process of transporting concrete, the speed shall not exceed 40km / h to ensure the driving safety.

12、工作完毕，应把搅拌筒内部和车身清洗干净，不能使剩余的混凝土留在筒内。

12. After the work is finished, the interior and body of the mixing drum shall be cleaned, and the remaining concrete shall not be left in the drum.

13、在水泵工作时，禁止空转，连续使用时不要超过15分钟。

13. When the water pump is working, no idling is allowed, and the continuous use shall not exceed 15 minutes.

14、水箱的水量要经常保持装满，以备急用，冬季停机后，应将水箱、水泵、水管、搅拌筒内的水放净，并停放在朝阳、不积水的地方，以免冻坏机械。

14. The water volume of the water tank should always be kept full in case of emergency. After the shutdown in winter, the water in the water tank, water pump, water pipe and mixing drum should be drained completely, and the water should be stored in the place where there is no water in the morning to avoid freezing damage to the machinery.

15、冬季应及时安装保温套，并使用防冻液对搅拌车加以保护，根据天气变化更换燃油标号，确保机械的正常使用。

15. In winter, the insulation sleeve should be installed in time, and antifreeze should be used to protect the mixer. The fuel label should be changed according to the weather change to ensure the normal use of the machinery.

16、在检查、修理液压传动部分时，应使发动机和液压泵在没有压力的情况下进行。

16. When checking and repairing the hydraulic transmission part, the engine and hydraulic pump should be operated without pressure.

17、在调整各部间隙、行程、压力时，应由专职员检查同意;更换机件时，必须由部长或主管经理签字，否则出现问题后追究有关人员责任。

17. When adjusting the clearance, travel and pressure of each department, the full-time safety officer shall check and approve; when replacing the machine parts, it must be signed by the director or the manager in charge; otherwise, the relevant personnel shall be held responsible for the problems.

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