一台浦沅25t起重机的上车转台工作面(与回转支承内圈用螺栓相连的接触面称为工作面),是一个外圈直径为1286mm,内圈直径为1040mm的圆环,圆环的内、外圈是与上车转台焊接成一体,在一次起吊重物时,圆环的内、外圈焊口的1/3被撕开,转台工作面与回转支承内圈连接螺栓也有部分被剪切断。 A Puyuan 25t crane on the car turntable work surface (with the slewing ring inner surface bolted contact surface known as the work surface), is an outer diameter of 1286mm, inner diameter of 1040mm ring, the ring The inner ring and the outer ring are welded together with the turntable on the car. When lifting heavy objects, 1/3 of the inner and outer ring welds of the ring are torn apart, and the connecting faces of the turntable face and the inner ring of the slewing bearing are also partially covered Cut off