井字架的第一導向滑輪與卷揚機距離應為多少

井字架的第一(yi)導向滑輪與卷揚機距離應(ying)為多少(shao)？

　　卷(juan)(juan)揚(yang)機卷(juan)(juan)筒(tong)(tong)系帶(dai)槽卷(juan)(juan)筒(tong)(tong)的(de)為卷(juan)(juan)筒(tong)(tong)寬度的(de)15倍；卷(juan)(juan)揚(yang)機卷(juan)(juan)筒(tong)(tong)系無槽卷(juan)(juan)筒(tong)(tong)的(de)為卷(juan)(juan)筒(tong)(tong)寬度的(de)20倍。

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