为了检查江西省江口水力发电厂固定卷扬启闭机在正常运行水位 69.5m时是否超载 ,采用半桥法测量扭矩 ,计算出水电厂进水口工作闸门启门力、自重 ,并推算出启门力与水位的关系 ,据此判断出该启闭机已超载。同时 ,分析了闸门启闭机超载的症结所在 ,为解决闸门启闭机超载问题提供了科学方案 ,可节约大量的工程改造资金。 In order to check whether the fixed winch hoist of Jiangkou Hydropower Station in Jiangxi Province is overloaded at 69.5m of normal operating water level, the half-bridge method is used to measure the torque and calculate the door opening force and dead weight of the working gate at the water inlet of hydropower plant, and calculate the door opening force And the relationship between the water level, thus determine the hoist has been overloaded. At the same time, the crux of the gate hoist overloading is analyzed, which provides a scientific solution for overloading the gate hoist and can save a lot of engineering funds.