Belt conveyor is the major transportation equipment in coalmine production, and driving drum is it's key component.
带式输送机是煤矿生产中的一种主要的运输设备，传动滚筒是其关键部件。
The friction coefficient between driving drum and belt is about 0.25, while the friction coefficient between bionic driving drum and belt is over 0.32.
普通传动滚筒与胶带之间的摩擦系数一般为0.25，而这两种仿生传动滚筒与胶带之间的摩擦系数都在0.32以上。
In order to ensure the safe operation of belt conveyor and improve its transportation efficiency, it is necessary to increase the driving force of the driving drum.
为了保证带式输送机的安全运行，提高其运输效率，就要增大传动滚筒的驱动力。
But as experiment time increases, the effect of increasing friction for driving drum with concave covering-layer is decreased, and much lower than the driving drum with convexity covering-layer.
但是凹坑形仿生非光滑传动滚筒随着实验时间的增长，其增摩效果受到一定的影响，效果不如凸包形仿生非光滑传动滚筒。
But as experiment time increases, the effect of increasing friction for driving drum with concave covering-layer is decreased, and much lower than the driving drum with convexity covering-layer.
但是凹坑形仿生非光滑传动滚筒随着实验时间的增长，其增摩效果受到一定的影响，效果不如凸包形仿生非光滑传动滚筒。
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