CRANE DEVICE
PROBLEM TO BE SOLVED: To prevent interference of a wire rope which achieving down-sizing of a crane device.SOLUTION: Down-sizing of a drum 50 is achieved by adopting duplex winding such that both ends of one wire rope 60 are fixed, one side 60b of the rope 60 is overlapped and wound on the other sid...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To prevent interference of a wire rope which achieving down-sizing of a crane device.SOLUTION: Down-sizing of a drum 50 is achieved by adopting duplex winding such that both ends of one wire rope 60 are fixed, one side 60b of the rope 60 is overlapped and wound on the other side 60a of the rope 60 in two layers. Further, An equalizer 52c is rotatably provided on an elevation side shaft 52x which rotatably supports elevational sheaves 52a, 52b or a stationery side shaft 53x which rotatably supports stationery sheaves 53a, 53b, whereby down-sizing can be achieved without separately requiring any new shaft or installation location. In addition, a distance between wire ropes hung on the equalizer 52c is so made as to be shorter than a distance between ropes hung on the other sheave 52b which is positioned coaxially with the equalizer 52c, whereby a distance between a rope 60r which is wound on the elevational sheave 52b from the drum 50, and a rope 60s which is hung on the equalizer 52c is elongated thereby preventing interference of the rope.SELECTED DRAWING: Figure 6
【課題】小型化を図りつつワイヤーロープの干渉を防止する。【解決手段】1本のワイヤーロープ60の両端部を固定しロープ60の一方側60aの上にロープ60の他方側60bを2層に重ねて巻き取る2条巻きの採用によりドラム50を小型化する。また、イコライザ52cを、昇降シーブ52a,52bを回転可能に支持する昇降側軸52x又は固定シーブ53a,53bを回転可能に支持する固定側軸53xに回動可能に設けることにより、新たな軸や設置場所を別途必要とせず小型化する。また、イコライザ52cに掛けられているワイヤーロープ間の距離を、イコライザ52cと同軸に位置する他のシーブ52bに掛け回されたロープ間の距離より小さくすることにより、ドラム50からの昇降シーブ52bへ掛け回すロープ60rと、イコライザ52cに掛けられているロープ60sとの間の距離を長くしロープの干渉を防止する。【選択図】図6 |
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