According to the safety anti-falling lifting hook for the crane, a steel wire rope penetrates through the bottom of a shell, the top end of the steel wire rope is movably connected with a guide disc, a swing shaft rod is inserted into the guide disc, and the upper end and the lower end of the swing shaft rod are movably connected with supports; and a flitch plate is movably mounted at the tail end of the bracket and on the front surface of the guide disc, and the flitch plate is movably mounted in the lifting hook head. After a steel wire rope at the top of the lifting hook head is in a motion out-of-control state, the steel wire rope pulls a guide disc to quickly rotate, and a convex rod on the outer surface of the guide disc is in contact with an inclined block on the surface of a poke rod, so that the inclined block at the bottom of the poke rod is driven to be in contact with an inner inclined groove of an insertion rod; and the swinging shaft rod simultaneously drives the flitch at the top end of the bracket to expand outwards, so that the friction between the flitch and the guide disc is increased by utilizing the contact between the friction plate on the outer surface of the flitch and the guide disc, the descending speed of the steel wire rope is reduced, and the normal operation of the crane is prevented from being influenced after the lifting hook head is out of control.
本发明提供一种起重机用安全防坠吊钩,所述钢丝绳贯穿于壳体的底部,且钢丝绳的顶端活动连接有导向盘,所述导向盘的内部插接有摆动轴杆,所述摆动轴杆的上下两端均活动连接有支架,所述支架的末端在导向盘的前表面活动安装有贴板,所述贴板活动安装在吊钩头的内部。在吊钩头顶部的钢丝绳处于运动失控状态后,钢丝绳拉动导向盘快速转动,导向盘外表面的凸杆接触拨动杆表面的斜块后,从而带动拨动杆底部的斜块接触插杆内部斜槽,插杆向下按压摆动轴杆,摆动轴杆同时带动支架顶端的贴板向外侧张开,从而利用贴板外表面摩擦片与导向盘接触,增加与导向盘之间的摩擦力,降低钢丝绳的下降速度,避免吊钩头出现失控状态后,影响起重机的正常运行。
Safe anti-falling lifting hook for crane
一种起重机用安全防坠吊钩
2022-07-29
Patent
Electronic Resource
Chinese