本文研究了螺旋纸管(罐身)各参数之间，以及皮带轮直径和最大纸管外径之间的关系。

In this paper, the relations between the parameters of the spiral wound paper tubes and between the diameter of the pulleys and the maximum outer diameter of the paper tubes have been studied.

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大直径的皮带轮，给皮带提供了更多的接触面积，可减少皮带所受的张力并避免其滑落的可能，进而延长了皮带及轴承的寿命。

The large pulley provide more interface for strap and decrease tension of strap and avoid sliding to prolong the using life of strap and bearing.

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