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[来源:www.syuan-lab.com] [作者:aywl] [日期:17-04-06]

蝴蝶结主要用于吊人升空作业,一般只用于紧急情况或在现场没有其他载人升空机械时使用。如在起重桅杆竖立后,需在高处穿挂滑车等:在作业时,操作者必须在腰部系一根绳,以增加升空的稳定性。蝴蝶结的操作步骤分为五步:   第一步,将绳的中部对折(可在绳的适当部位)形成一个绳环,如图17(a)所示。   第二步,用手拿住绳环的顶部,然后按图17(a)中箭头所示的方向再对折,对折后便形成如图17(b)所示的两个绳环。   第三步,按图17(b)中箭头所示方向,将两个靠在一起的部分绳环互相重叠在一起,形成如图17(c)所示的形状。   第四步,用手捏住两绳环上部的交叉部分,然后向后折,直至与两个绳头相重叠在—起,便形成如图17(d)所示的四个绳圈。   第五步,将两个大绳圈分别从与自己相邻的小绳圈由下向上穿出,便形成如图17(e)所示的蝴蝶结。   在使用蝴蝶结时,先将绳结拉紧,使绳与绳之间互相压紧,不使之移动,然后将腿各伸入两个绳圈中。绳头必须在操作者的胸前,操作者用手抓住绳头便可进行升空作业。
Bowknot is mainly used for lifting people off assignments, generally used only for emergency or when no other manned launch machinery used at the scene. Such as after the ginpole is erect, need to hang on high wear block, such as: in the operation, the operator must be in the waist of a rope, in order to increase the stability of the launch. Bow steps is divided into five steps: first step, the rope in the middle of the folded in half (at proper positions of the rope) to form a rope ring, as shown in figure 17 (a). Second, with the hand took the rope ring at the top of the then according to the figure 17 (a) in the direction of the arrow shown in half again, folded in half and then form as shown in figure 17 (b) the two rope rings. Third step, according to the direction indicated by the arrows in figure 17 (b), the two together some of the rope rings overlap each other, form a shape as shown in figure 17 (c). The fourth step, with the hand hold the upper two rope ring cross section, and then fold back, until with two rope in - head, they form shown in figure 17 (d) four loops. Fifth, respectively from two big ring and from down to up their adjacent small ring wear out, they form shown in figure 17 (e) the bow. When using bows, knot tightened first, make each other between line and line pressure, don't move, then in each leg into two loops. Rope head must be in the breast of the operator, the operator with the hand to catch the rope head can launch operations.
 

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