辊道是利用圆筒式的辊子之转动来输送轧件的运输设备。它把轧制生产过程的各个工序互相联结起来。实现操作机械化，大大改善劳动条件，提高生产效率，为实现自动化操作提供条件。

The roller is the transport equipment that uses the rotation of the cylindrical roller to transport the rolled piece. It joins each of the processes in the rolling process. Mechanization of operation is realized， labor conditions are greatly improved， production efficiency is improved， and conditions for realizing automatic operation are provided.

空转辊道——通常借助轧件重力来推动，所以辊道之平面多做成与水平面之间有斜度，辊道，以利用重力作用，因此又称为重力辊道。一般小型轧机的辊道，特别是升降台上的辊道，圣霖国际辊道，尽可采用重力辊道而不必采用转动辊道。有些工作辊道的延长部分也有采用重力辊道的。

The idle roller table is usually driven by the gravity of the rolled piece， so the plane of the roller table is made of a gradient between the horizontal plane and the horizontal plane，辊道生产商， so as to make use of the gravity effect， so it is also called the gravity roller table. The rolling mill of a small mill， especially the roller table on the lift table， can use the gravity roller without using the rotating roller table. Some of the lengthening parts of the working rollers also use the gravitational 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.

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