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    • 10. 发明专利
    • Chain block and load chain
    • 链块和负载链
    • JP2014108839A
    • 2014-06-12
    • JP2012262615
    • 2012-11-30
    • Kito Corp株式会社キトー
    • ISHIKAWA KAZUMITSUKOSUGE KOSUKE
    • B66D3/16
    • B66D3/16F16G13/12F16G15/00F16G15/12
    • PROBLEM TO BE SOLVED: To provide a chain block and a load chain that can reduce abrasion of the load chain even though the wire diameter thereof is small, by adjusting balance between hardness corresponding to strength of the load chain and hardness of a load sheave.SOLUTION: The chain block 10 comprises: a load chain C1 for suspending a load; and a load sheave member that is supported rotatably between a first frame 11 and a second frame and has a chain pocket 23b around which the load chain C1 is wound and into which the load chain C1 enters. The load chain C1 is formed of a steel material with rockwell hardness C scale (HRC) of 47-51. The load sheave member is formed of a steel material in which at least the chain pocket has rockwell hardness C scale (HRC) of 40-45.
    • 要解决的问题:为了提供链节和负载链,即使线径小,通过调整与负载链的强度对应的硬度和负载滑轮的硬度之间的平衡,也能够减轻负载链的磨损。 解决方案:链条块10包括:用于悬挂负载的负载链C1; 以及负载滑轮构件,其可旋转地支撑在第一框架11和第二框架之间,并且具有链条袋23b,负载链C1绕其缠绕并且负载链C1进入该链环23b。 负载链C1由具有47-51的洛氏硬度C标准(HRC)的钢材形成。 载重滑轮构件由至少链袋具有40-45的洛氏硬度C标尺(HRC)的钢材形成。