1. It points out that the position of the maximum strain, stress and tension is at first group trough type roller, not at passing poion of pulley if the head drum works as pulley.
2. The pulley block on the head of the main arm can be a combined type pulley block.
所述主臂的头部的滑轮组还可 以是组合式滑轮组。
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3. Cast steel pulley with wall unevenness, many hot pitch points and narrow feeding channel is difficult to be fed by setting up a head.
铸钢皮带轮，壁厚不匀，热节点多，补缩通道狭窄，很难用设置冒口的方法给予补缩。
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4. Engine drives the pulley to rotate, and the grinding head is driven to rotate by the driving belt to grinding the rail;
发动机带动小带轮转动，通过皮带传动带动磨头旋转，对钢轨产生打磨作用；
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5. The utility model provides a belt-pulley overrunning-clutch assembly, which is used for a head-feed dual-purpose combine for rice and wheat, and includes a belt pulley and an inner ring.
本实用新型用于半喂入稻麦两用收割机，是一种皮带轮超越离合器总成。
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6. The head pulley place may raise the type design, the side Then hoop clean and maintenance;
上滚轮座可掀式设计，方便滚轮的清洁与保养；
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7. The head pulley place may raise the type design, the side Then hoop clean and maintenance;
