1、 As a concrete mixer, first of all, it is necessary to maintain the box of the concrete mixer, and use a new concrete mixer to fix the box bracket near the chassis frame in real time. Every time after transporting the concrete and entering the cleaning tank, it is necessary to know that the concrete is easy to bond with the reinforcement.
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2、 Discharging symmetry is one of the important indexes of concrete mixer, which directly affects the construction quality. When transporting concrete, the rotation speed of mixing drum should be controlled at 2 ~ 5R / min. When the concrete slump is large and the transportation interval is long, the mixing drum should be moved quickly for 5 ~ 10 times before discharging, so that the internal concrete can be fully mixed and the symmetry of discharging can be greatly improved.
In case of water loss during coagulation, water should be added to the construction site for mediation and full mixing. Although this environment should stop, the quality of concrete will not be guaranteed. Some users do not pay attention to speed control during transportation, too fast will increase fuel consumption, too small will cause concrete segregation. Therefore, the rotation speed of the mixing drum should be strictly controlled according to the qualification requirements, so as to improve the transportation quality of concrete.
3、 The maximum height of concrete should not be higher than the maximum volume of storage tank, because the density of concrete varies with the strength grade. High strength concrete generally has high density, and the same volume is not good for cars. The capacity, quality and slump of concrete conveying shall comply with the provisions of vehicle operation manual, and lubricating oil shall be added in real time.
4、 When the concrete mixer truck is parked in the open air, the mixing drum should be removed and rotated before loading, and the water in the cement tank should be discharged, so as to ensure the quality of concrete transportation.
5、 When driving on the expressway, the unloading chute should be lowered to a very low position, and transferred to a vertical position with the body, and locked on the frame with a locking device, so as to prevent the shaking due to insecurity, causing injuries and accidents, and affecting the operation of other vehicles. If the ladder is not in good condition, the oil tank shaft of the tanker will be damaged.
6、 Before unloading, if water evaporates, the slump is too low to be full. When the user needs, water can be added into the mixing drum properly, and then the material can be discharged after 30 turns at the speed of 6 ~ 10 RPM according to the feeding deviation.
7、 The concrete mixer truck shall not move the mixing drum in the process of transporting concrete to avoid concrete segregation.
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