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1. 发明授权

US3802730A Overhead load supporting structure and method 失效
标题翻译： OVERHEAD负载支持结构和方法
公开(公告)号：US3802730A
公开(公告)日：1974-04-09
申请号：US72379268
申请日：1968-04-24
申请人： REPUBLIC STEEL CORP
发明人： HOUGH J
IPC分类号： B66C1/66 , B66C13/00 , B66C1/16
CPC分类号： B66C1/66 , B66C13/00 , B66C2700/017
摘要： A crane structure comprising a trolley, a beam member which is suspended from the trolley by flexible cables, a hoist on the trolley for changing the elevation of the beam, and a pair of hook assemblies. The beam is constructed to provide cam portions adjacent bearing seats so that the hook assemblies are guided from one bearing seat to another when the beam is lowered until the weight of the hook assembly is supported by a surface beneath them. A hook assembly stabilizing mechanism is also provided. The disclosure also includes a novel laminated hook construction which establishes line contact with a support which line forms a pivot axis for hook adjustment.
摘要翻译：一种起重机结构，包括手推车，通过柔性电缆悬挂在手推车上的梁构件，用于改变梁的高度的手推车上的起重机和一对钩组件。梁被构造成提供靠近轴承座的凸轮部分，使得当梁被降低直到钩组件的重量被其下面的表面支撑时，钩组件从一个轴承座被引导到另一个轴承座。还提供了一种钩组件稳定机构。本公开还包括一种新颖的层叠钩结构，其与支撑件建立线接触，该线形成用于钩调节的枢转轴线。

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