在进行桥式起重机安全技术检验中,发现多起双梁桥式起重机小车“三条腿”情况,小车在轨道全长或局部路段,只三个轮着轨,一个轮悬空。起重机在小车中,起动、运行、制动过程都或多或少地伴随较明显的震动、走斜和不正常的声响。目测发现这些小车车轮、轨道都有明显的磨损,小车轨 During the inspection of overhead crane safety technology, it was found that more than two double-girder overhead crane trolley “three legs” situation, the car in the full or partial sections of the track, only three rounds of rail, a wheel vacant. Crane in the car, starting, running, braking process are more or less accompanied by more obvious vibration, walking oblique and abnormal sound. Visual inspection found that these car wheels, tracks have obvious wear and tear, small car rails