一、前言桥式起重机(以下简称桥机)是水电站厂内机电安装的主要手段。其容量的大小,是根据水电站机组容量尤其机组的最重组装部件(有时也考虑主变的重量)而定,固此水电站厂内桥机在安装完毕正式使用之前要根据有关文件及规程进行负荷试验。桥机的负荷试验,是对桥机的设计、制造及安装质 First, the foreword Bridge crane (hereinafter referred to as bridge machine) is the main means of mechanical and electrical installation of hydropower plant. The size of its capacity is based on the unit capacity of hydropower units, especially the heaviest assembly of the unit (sometimes taking into account the weight of the main transformer) may be fixed in accordance with the relevant documents and procedures prior to the installation of the bridge machine in the plant test. Bridge machine load test is the bridge machine design, manufacture and installation of quality