起重运输机械的供电方式一般采用滑触线。虽然其悬挂及配置安装方式各异,但使用天长日久滑线磨损或其它意外原因,主滑触线容易断线。滑触线的线电压为交流380V,在断线时车间内或露天的工作人员便有触电的危险。为此,我们装设了滑触线断线自动保护装置,用以切除故障滑触线上的电源。该装置具有结构简单,工作可靠等优点,现介绍如下: 图中所示为主滑触线保护装置的 Lifting transport machinery generally use the power line sliding touch. Although its suspension and configuration of different installation methods, but the use of everlasting slippery wear or other unexpected reasons, the main slip line easily broken. The line voltage of the trolley line is AC 380V, so the worker in the shop or in the open will be in danger of getting an electric shock when the line is broken. To this end, we have installed a trolley line break automatic protection device to cut off the power supply on the trolley fault line. The device has the advantages of simple structure, reliable work, etc., are described as follows: The figure shows the main trolley line protection device