LIFTING METHOD USING CRANE AND AUXILIARY LIFTING DEVICE

PROBLEM TO BE SOLVED: To provide a lifting method using a crane and an auxiliary lifting device in which a hanging tool can be safely attached to a hung load by preventing the swinging of the hanging tool of a lower end of a hanging wire hung from a crane hook without using complex operation.SOLUTION: A lifting method is characterized by: hanging an auxiliary lifting device 1 to a crane hook 11; connecting and fixing a length adjustment rope 3 to a hanging wire 6 with a hanging tool 6a at a lower end thereof and hung to the crane hook 11; adjusting a distance between the crane hook 11 and the hanging tool 6a so that the swinging of the hanging tool 6a is reduced, by feeding or winding off the length adjustment rope 3 by the auxiliary lifting device 1, when the hanging tool 6a is attached to a hung load 15; and feeding the length adjustment rope 3 by the auxiliary lifting device 1, until a weight of the hung load 15 becomes the length which does not act on the length adjustment rope 3, when the hung load 15 is lifted by the crane 7, after the hanging tool 6a is attached to the hung load 15. 【課題】複雑な操作を用いることなく、クレーンフックから吊り下げられた吊ワイヤの下端部の吊り具の揺れを抑制して、吊り具を吊荷に安全に取り付けることができるクレーンを用いた吊り上げ方法および吊り上げ補助装置を提供する。【解決手段】クレーンフック１１に吊り上げ補助装置１を吊り下げて、長さ調節索３を、下端部に吊り具６ａを有してこのクレーンフック１１に吊り下げられた吊ワイヤ６に接続固定し、吊り具６ａを吊荷１５に取り付ける際には、吊り上げ補助装置１により長さ調節索３を繰り出しまたは巻取りして、吊り具６ａの揺れが小さくなるようにクレーンフック１１と吊り具６ａとの距離を調節し、吊り具６ａを吊荷１５に取り付けた後は、吊荷１５をクレーン７により吊り上げた際に吊荷１５の重量が長さ調節索３に作用しない長さになるまで、吊り上げ補助装置１によって長さ調節索３を繰り出す。【選択図】 図１