塔式起重机主钩钢丝绳使用一段时间后会产生旋转力(绞劲),需要将其拆卸后才能将旋转力释放。我们通过改进钢丝绳的连接方式,使释放旋转力更加容易。1.存在问题我公司1台FZQ1380型塔式起重机,其主钩起升机构位于其顶部平台上,主钩起升钢丝绳直径为24mm、长度为1425m,通过4倍率滑轮起升主钩,钢丝绳的2个端斗固定在主起升卷扬机卷筒上,如图1所示。塔式起重机在运行过程中,钢丝绳受到拉伸会产生旋转力(绞劲),由 Tower crane main hook wire rope after a period of time will have a rotating force (twisting strength), need to be removed before the release of rotational force. We have made it easier to release the rotational force by improving the way the wire rope is connected. 1. Existing problems A FZQ1380 tower crane of our company has a main hook lifting mechanism on the top platform. The main hook lifting wire rope has a diameter of 24mm and a length of 1425m. The main hook is hoisted by a 4-times speed pulley, 2 end bucket fixed in the main lifting winch drum, as shown in Figure 1. Tower crane in operation, the rope will be stretched by the rotation force (twist Jin), from