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.

双层滚筒输送机同样也具备了滚筒的优点。具有输送量大，维护方便等原因。应用于各行业的成品包装箱、周转箱等输送。要求被输送物的底部是平整的。而且每三只滚筒要与底部接触。

Double drum conveyor also has the advantages of drum. It has a large amount of transportation, convenient maintenance and so on. It is applied to the transportation of finished packing boxes and turnover boxes in various industries. The bottom of the conveyer is required to be flat. And every three rollers should be in contact with the bottom.

动力滚筒是输送设备使用的过程中一种非常常见的输送工具，通常来说动力滚筒是由自主驱动输送带或者改变其输送方向的圆筒组成的，这种滚筒的生产技术已经非常的普及，很多企业都可以制作生产这种滚筒，当然也是支持定制的，就是说可以根据客户实际的需求来定制出适合自己的滚筒以及完整的输送带。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。

The power roller is a very common conveyance in the process of the use of the conveying equipment. Usually, the power roller is made up of a cylinder that drives the conveyer belt independently or changes the direction of its tran***ission. The production technology of this drum has been very popular. Many enterprises can make this kind of roller, of course, it is also supported. Customized, that is, according to the actual needs of customers to customize their own drum and the complete conveyor belt.