论文部分内容阅读
卷扬机在吊装作业中,钢丝绳从绳筒上脱出,很容易被剪断,这种事故发生往往造成很严重的后果。钢丝绳滑脱有如下几个原因: 1.卷扬机安装位置偏斜、偏中等; 2.绳筒侧板过窄,内侧外倾等; 3.绳缠绕过满,最外层外边缘已近筒侧板外缘; 4.重物下落时,突然受阻或超过下限,绳在筒上松脱引起打拧或弹出,如未及时发现,再上升就会发生事故,这种情况在高速卷扬机及远控操作的卷扬机上发生几率较大。 1984年下半年我们在塔式起重机的起升
In the hoisting operation of the hoisting machine, the steel wire rope is taken out from the rope drum and is easily cut. This kind of accident often leads to serious consequences. There are several reasons for the slippage of the wire rope: 1. The installation position of the hoist is skewed and partial; 2. The side plate of the rope is too narrow and the inside is inclined; 3. The rope is over-wound and the outermost edge is near the side plate. Outer edge; 4. When the weight falls, it is suddenly blocked or exceeds the lower limit. If the rope is loose on the cylinder, it will cause screwing or ejection. If it is not discovered in time, it will rise if it rises again. This happens in the high-speed winch and remote control operation. There is a greater chance of occurrence on the hoist. In the second half of 1984 we lifted the tower crane