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主要工作辊道紧靠工作机架，它将轧件喂入轧机和接受轧出轧件，因此它是经常参加工作的辊道，故称主要工作辊道。

轧件长度超过主要工作辊道时，由另一组工作辊道参加工作，这一组辊道叫辅助工作辊道，或称为延伸辊道。

The main work table is close to the work rack. It will feed the rolling piece into the rolling mill and accept rolling and rolling parts. Therefore, it is a roller table that often works. So it is called the main work roller table.

When the length of the rolled piece exceeds the main work roller Road, another group of working rollers is involved in the work. This group of rolls is called the auxiliary work roller, or the extension roller.

单独传动辊道为一个电机带动一个辊子。这种辊道结构简单，操纵灵活，维修方便。选用的输送带安全系数、运行阻力系数偏大，从而造成选用的电动机功率过大，带宽过宽或是抗拉强度要求较高。根据铸坯的断面尺寸计算选择辊子直径和辊身长度，切割区后的辊道辊间距取决于定尺长度。切割前辊道速度与拉坯速度一致，切割后要迅速输送铸坯，辊道速度一般为20～30m/min。

A single drive roller is used as a motor to drive a roller. The roller table is simple in structure, flexible in operation and convenient in maintenance. According to the section size of the slab, the diameter of the roller and the length of the roller are calculated. The roller spacing after the cutting area depends on the length of the length. Before cutting roller speed and casting speed, after cutting to quickly transfer slab, roller speed is 20 ~ 30m/min.

同时双层滚筒输送机采用一台电机进行驱动，和***的两台滚筒线相比，节约了一台电机和电控装置的开支，这样为企业节约了成本，但是要注意在设计时要注意两层滚筒线之间的高度要高于物料的高度。

At the same time, a double layer roller conveyor is driven by a motor. Compared with the two independent lines, it s***es the expenses of an electric motor and electronic device. This s***es the cost for the enterprise, but attention should be paid to the height of the two layers of the roller line when the design is higher than the material.

包胶滚筒的寿命是比较长的，像这种要求就是要寿命长的，因为包在滚筒上边也不是很方便取下来呀，所以这就又验证一点.

The life of the rubber drum is long, and the requirement is long life, because it is not very convenient to take the package on the top of the drum, so this will verify the first point again.