某台QT80高层建筑用塔式起重机在工业性考核过程中,曾两次出现交叉滚柱式回转支承装置卡死,造成了摆线针轮减速机损坏和减速机机座破裂的事故。回转支承规格为D_o=1540,d_0=45。1985年在解体检查中发现:滚道两处上下分别出现深达5mm的滚柱边缘刻痕;大部分滚柱符合图纸要求,两端倒圆角为R1.5,而少数几个滚柱则没有倒圆角;部分隔套磨损严重,交叉滚柱与隔套间出现较大的研 During the process of industrial assessment, a tower crane with QT80 high-rise building had twice stuck in the cross-roller slewing ring bearing device, resulting in the damage of the cycloid reducer and the rupture of the reducer base. Slewing bearing specifications for the D_o = 1540, d_0 = 45. 1985 disintegration inspection found: raceway up and down, respectively, up to 5mm roller edge score up to 5mm; most of the roller in line with the requirements of the drawings, both ends rounding R1.5, while a few rollers are not rounding; part of the spacer wear serious cross-roller and spacer between the larger research