The invention relates to the technical field of lifting arms, in particular to an iron tower crane lifting arm. The iron tower crane lifting arm comprises a first telescopic arm, a second telescopic arm movably inserted in the first telescopic arm, a third telescopic arm movably inserted in the second telescopic arm, a rope and a fixing shell fixedly installed at the end of the third telescopic arm, the fixing shell is fixedly installed at the end of the third telescopic arm, the end of the rope penetrates through the top of the fixing shell and extends to the bottom of the fixing shell, a lifting hook is arranged at the bottom of the fixed shell, and the lifting hook is fixedly connected to the tail end of the rope. Through the arrangement of a water pipe, second fan blades, a sealing box and other mechanisms, when the rope and a fixing shaft generate heat through friction under the high-strength effect, cold water in the water pipe is heated and evaporated through heat transfer and is discharged into the sealing box used for water vapor diffusion through a vapor-water separation layer, and the cooling effect on a fixing shaft is achieved.
本发明涉及起吊臂技术领域,具体为一种铁塔吊车起吊臂,包括第一伸缩臂、活动插设在第一伸缩臂上的第二伸缩臂、活动插设在第二伸缩臂上的第三伸缩臂、绳索以及固定安装在第三伸缩臂端部的固定外壳,所述第三伸缩臂的端部固定安装有固定外壳,所述绳索的端部于固定外壳的顶部贯穿并延伸至固定外壳的底部,所述固定外壳的底部设有吊钩,所述吊钩固定连接在绳索的末端。本发明通过设置水管、第二扇叶、密封箱等机构,在绳索与固定轴之间由于在高强度作用下摩擦生热时,水管中的冷水经过热量传递而升温蒸发,经过汽水分离层排入用于水汽扩散的密封箱内,实现对固定轴的降温作用。
Iron tower crane lifting arm
一种铁塔吊车起吊臂
2022-01-07
Patent
Elektronische Ressource
Chinesisch