B30。7包括适用于安装在基础或其他支撑结构上的绞车的构造、安装、操作、检查、测试和维护，用于移动荷载。本卷介绍的绞车通常用于工业、建筑和海上应用。本卷中包含的要求适用于由内燃机、电动机、压缩空气或液压装置驱动，并使用卷筒和绳索的绞车。

B30.7 includes provisions that apply to the construction, installation, operation, inspection, testing and maintenance of winches arranged for mounting on a foundation or other supporting structure for moving loads. Winches addressed in this volume are those typically used in industrial, construction and maritime applications. The requirements included in this volume apply to winches that are powered by internal combustion engines, electric motors, compressed air or hydraulics and that utilize drums and rope.