A mixer truck is a special vehicle. Not all drivers who can drive can drive a mixer truck. If it does not work properly, it will cause very rapid wear of the tipper, hydraulic pumps, motors and reducers, and even serious consequences. So it should be dealt with as follows: 1. Before starting the mixer truck, the operating handle of the mixer drum must be in the "stop" position. 2. After the mixer truck starts the engine, the mixer drum should be rotated at low speed for about 10 minutes, and the hydraulic oil temperature can reach above 20 degrees before it can work. 3. When the mixer truck is parked in the open air, before loading, the mixing drum must be reversed and the accumulated water and various materials must be discharged to ensure the quality of the concrete. 4. When the mixer truck is carrying concrete, it must be ensured that the sliding bucket is firmly in place to prevent it from swinging due to looseness, injuring pedestrians or affecting the normal operation of other vehicles during the trip. be.
5. When the mixer truck carries the mixed concrete, the rotation speed of the mixing drum is 2-10 rpm. During transportation, the rotation speed of the mixing drum on the smooth road is guaranteed to be 2-3 rpm. Driving on a road with a slope of more than 50 when the road surface, or the road surface that vibrates from side to side, should stop shaking and turning and resume shaking and turning after the road condition improves. 6. The concrete transfer time by the concrete mixer truck cannot exceed the time set by the mixing station. During the transportation of concrete, the mixing drum should not be stopped for a long time to avoid segregation of the concrete. The driver must always observe the condition of the concrete and if any abnormality is observed, report to the dispatch room in time and take action to move it. 7. When the mixer truck is equipped with concrete, the stagnation time on site should not exceed 1 hour. If the time limit is exceeded, the site manager is obliged to deal with it immediately. 8. The concrete slump carried by the mixer truck should not be less than 8 cm. From the concrete to the tank to the discharge, it should be discharged within 2 hours when the temperature is high, and it should be discharged within 2.5 hours in rainy weather. 9. Before the concrete mixer truck unloads, the mixing drum should be rotated for 1 minute at 10-12 rpm before unloading. 10. After unloading the concrete mixer truck, immediately use the hose connected to the truck to drain the water to clean the inlet, discharge funnel and discharge channel, etc., and drain the remaining soil and concrete stuck to the body, and then 150-200 liters of clear water Inject into the mixing drum. On the way back, let the mixing drum rotate slowly to clean the inner wall and prevent the remaining material slag from sticking to the drum wall and mixing blades. loss.
11. When the concrete mixer truck is transporting, the engine speed should be in the range of 1000-1400 rpm so that the engine has maximum torque. During the process of transporting concrete, the speed of the vehicle should not exceed 40 km/h to ensure driving safety. 12. After the work of the track mixer, the inside of the drum and the body of the mixer should be cleaned and the remaining concrete should not remain in the drum. 13. When the mixer truck is working on the water pump, it is forbidden to stand still, and continuous use should not exceed 15 minutes. 14. The concrete mixer truck water tank should always be kept full for emergency use. After shutting down in winter, the water in the water tank, water pump, water pipe and mixing drum should be drained and parked in a sunny place without water accumulation to prevent the machinery from freezing. 15. In winter, the mixer truck should be installed with insulation cover in time, and antifreeze should be used to protect the mixer truck, and the fuel label should be changed according to weather changes to ensure the normal use of the machine. 16. When checking and repairing the hydraulic transmission part of the mixer truck, the engine and the hydraulic pump must be done without pressure. 17. When adjusting the distance, impact and pressure of each part of the concrete mixer truck, it must be checked and approved by the full-time safety officer. When replacing the parts, it must be signed by the minister or the responsible manager, otherwise, in case of problems, the relevant personnel will be responsible.