| 摘要 |
<p>PURPOSE:To hook and demount a lower-stage hooking metal fitting and at the same time to hook and demount an upper-stage hooking metal fitting exceedingly smoothly and effectively by pivoltally installing the lower edge of a working rod onto which the elliptical hole ports for hooking a hook-shaped bendable metal fitting are drilled. CONSTITUTION:A swingable plate 6 whose lower edge is screwed onto the edge of a cargo deck in free opening and closing by a hinge 5 is installed between the stay columns 2 and 2 erected and fixed onto the cargo deck 1. Two hook-shaped bendable metal fittings 31 and 32 are installed in projection onto the upper-part outer surface of the stay column 2 through a slender band-shaped supporting plate 4, and a long band-shaped engaging plate 8 on which upper and lower elliptical hole ports 71 and 72 for the insertion and projection of the hook- shaped metal fitting are formed in projection is connected to the swingable plate 6 through a connecting plate 21. Further, the lower edge of an operating rod 19 onto which the elliptical hole ports 181 and 182 for the fitting of the hook-shaped bendable metal fittings 31 and 32 is pivotally installed onto the upper and lower edges, led into an introducing cylindrical body 17 installed in projection onto the engaging plate 8, and a turning arm rod 10 is pulled up, and an operating rod 19 is pulled up, and then the elliptical hole port is released from the hooked metal fitting, and the swingable plate is opened.</p> |
