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搅拌一体机粘罐原因之设计不合理

来源:http://www.zkhntjbj.com/日期:2022-10-28

概述:经过实践和分析,我们认为搅拌一体机粘罐原因可以分为两大类:即设计不合理和使用不当,下面我们先从搅拌一体机卸料残余率和叶片设计不合理
经过实践和分析,我们认为搅拌一体机粘罐原因可以分为两大类:即设计不合理和使用不当,下面我们先从搅拌一体机卸料残余率和叶片设计不合理方面来讲解一番。
Through practice and analysis, we believe that the causes of tank sticking of the mixer can be divided into two categories: unreasonable design and improper use. Let's explain the discharge residual rate and unreasonable blade design of the mixer first.
从搅拌筒的内部结构看,搅拌运输车的拌筒是依靠回转的筒体带动其中的两条螺旋叶片所产生的螺旋运动,使混凝土获得既有“切向”又有“轴向”的复合运动,从而使搅拌筒具有搅拌和卸料的功能,因此形成这一螺旋运动的有关因素,诸如螺旋叶片的曲线参数,搅拌筒的几何形状和尺寸等对搅拌车的卸料残余率都有重要影响。
From the perspective of the internal structure of the mixing drum, the mixing drum of the mixing truck is driven by the rotating drum to produce spiral movement by two spiral blades, so that the concrete can obtain a composite movement of both "tangential" and "axial", so that the mixing drum has the functions of mixing and unloading. Therefore, the factors related to the formation of this spiral movement, such as the curve parameters of the spiral blades, The geometric shape and size of the mixing drum have an important influence on the discharge residual rate of the mixer truck.
而过大的卸料残余率意味着搅拌车在卸料结束后在搅拌罐里会有更多的余料,因而更有可能因日积月累在搅拌罐中粘料。目前大多数厂家采用的是等角对数螺旋线叶片,在卸料残余率上还有很大的改进空间。
However, excessive discharge residual rate means that the mixer truck will have more residual materials in the mixing tank after discharge, which is more likely to stick materials in the mixing tank due to accumulation over time. At present, most manufacturers use equiangular logarithmic spiral blades, and there is still much room for improvement in the discharge residual rate.
搅拌一体机
此外还有一种情况便是,工地在墙柱等施工中,会用塔吊吊斗车的方法进行浇捣,由于塔吊的料本来塌落度就比泵送的低,更由于施工时间长,卸一车混凝土通常要2~4h,有些驾驶员为了省油而停止搅拌筒的正常转动,这种情况下,特别容易造成粘罐,有时9方车一次粘罐就达一整天,这种情况在夏天更严重。
In addition, in the construction of wall and column, the construction site will use the tower crane bucket truck for pouring and tamping. Because the original slump of the tower crane materials is lower than that of the pump, and because the construction time is long, it usually takes 2-4 hours to unload a truck of concrete. Some drivers stop the normal rotation of the mixing drum to save fuel. In this case, it is particularly easy to cause tank sticking. Sometimes, the 9-way truck can stick to the tank for a whole day at a time, This situation is more serious in summer.
夏季在南方地区白天中午前后,环境温度经常超过30℃,在这种情况下运输混凝土,将会由于混凝土坍落度损失快以及罐体周围温度相对中心更高,因而混凝土更容易粘罐。搅拌一体机的罐体运行是通过液压的传动来运作的,液压油长时间在管路中以一定的速度流动,与管壁摩擦,再加上管路中各种阀件的阻力和油泵的做功,液压油被压缩产生热量,油温上升。
In summer, around noon in the day in the south, the ambient temperature often exceeds 30 ℃. When transporting concrete in this case, the concrete will be easier to stick to the tank because of the rapid loss of concrete slump and the higher temperature around the tank relative to the center. The tank of the agitator is operated by hydraulic transmission. The hydraulic oil flows in the pipeline at a certain speed for a long time and rubs against the pipe wall. In addition, the resistance of various valves in the pipeline and the work done by the oil pump cause the hydraulic oil to be compressed to generate heat and the oil temperature to rise.
总之混凝土在搅拌车拌筒中的工作是一个非常复杂的过程,搅拌一体机粘罐现象的产生原因也是各种各样的。以上就是为您讲解的内容了,对此您有什么问题可随时来我们网站http://www.zkhntjbj.com咨询!
In short, the work of concrete in the mixer drum is a very complex process, and the causes of tank sticking in the mixer are also various. The above is the content explained for you. If you have any questions about it, you can come to our website at any time http://www.zkhntjbj.com consulting service

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