某厂新铸钢车间23米浇注跨的75吨天车,总重102吨,需要吊到14. 5米高的天车轨道上去,但由于未有重型起重设备,按以往常规,需将天车的大梁部分分开吊,吊上后,在高空进行拼装、测量等作业,然后再 A new cast steel plant 23 meters pouring across the 75-ton overhead crane, weighing 102 tons, the need to hang on to the 14.5-meter overhead crane track, but because there is no heavy lifting equipment, according to conventional, will be required Crane girder part of the crane separately, after hanging, at high altitude assembly, measurement and other operations, and then