绪言所谓吊具,除单吊钩、山形吊钩等之外,还有其他品种。这里介绍的是一种称作C形吊钩的吊具,它用于吊运钢板类物料。由于这种吊具相对于其截面尺寸来说,曲率半径相当小,因此可以想得到这类吊具大多具有会导致较大应力集中的形状。对于这种形状的吊钩应考虑其在使用 Introduction The so-called spreader, in addition to a single hook, hook and so on, there are other varieties. Here is a spreader called a C-hook, which is used to lift steel sheets. Due to the relatively small radius of curvature of the spreader relative to its cross-sectional dimensions, it is conceivable that most of these spreaders will have a shape that results in greater stress concentration. Hooks for this shape should be considered for use