To obtain a method of constructing a structure easily even under a viaduct and a lifting device used for the method.SOLUTION: An H-steel 30 is placed on a front end of a fork sheath 20 by an operator and pushed it rearward. The H-steel 30 is slid upward along an inclined surface 23a and then fallen between a front holding surface 23b and a back holding plate 24a to be stored therebetween. Providing the inclined surface 23a makes the operator easily store the H-steel 30 between the front holding surface 23b and the back holding plate 24a only by pushing the H-steel 30 from the front side to the back side. Next, an operator at a riding part 11 turns on a radio switch of an electromagnet 25. Accordingly, the electromagnet 25 is magnetized and the H-steel 30 is magnetically attached to the back holding plate 24a by the magnetic force (holding force) so as to be fixed to the fork sheath 20.SELECTED DRAWING: Figure 1
【課題】高架下であっても容易に構造物を構築する方法及びこれに用いられる揚重装置を得る。【解決手段】作業員が、H鋼30をサヤフォーク20の先方端上に載せ、後方に向けて押す。そうすると、H鋼30は、斜面23aを滑り上がった後、前方押さえ面23bと後方押さえ板24aとの間に落ちて、収められる。斜面23aを設けることにより、作業員は、H鋼30を前方から後方に押すのみで、前方押さえ面23bと後方押さえ板24aとの間にH鋼30を容易に収納することができる。次に、搭乗部11に居る作業員が、電磁石25の無線スイッチをオンにする。そうすると、電磁石25が磁力を帯び、この磁力(保持力)によってH鋼30が後方押さえ板24aに磁着され、サヤフォーク20に固定される。【選択図】図1
METHOD OF CONSTRUCTING STRUCTURE UNDER VIADUCT AND LIFTING DEVICE
高架下に構造物を構築する方法及び揚重装置
2021-08-02
Patent
Electronic Resource
Japanese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / E04G SCAFFOLDING , Baugerüste |
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