悬梯由直径8毫米的圆铁制成,形状和规格见图。悬梯的使用方法:工人先用粗8毫米左右的牢固绳子围绕树干系一道绳环,并挂一节梯,然后站在已挂好的梯上系第二道绳环,系好后再挂一节梯,如此反复直达到预定高度为止。系绳环最好用双股细绳,在结头处拴一个金属大钉,这样系绳环时一挂即可,可以节省系绳时间。上树时工人应随身带几节梯,其 The ladder is made of round iron with a diameter of 8 mm. The shapes and specifications are shown in the figure. The use of the ladder: workers first with a solid rope about 8 mm thick around the trunk tied a rope ring, and hang a ladder, and then stood on the ladder has been hung on the second ropes, fasten and then hang A ladder, so repeatedly until it reaches a predetermined height so far. The tether ring is best to use double strand rope, tie a metal spike at the knot, so that when the tether loop can be hung, you can save the tether time. The workers should carry several ladders with them when they are on the tree