| 摘要 |
PURPOSE: A level luffing crane is provided to prevent releasing of a stopper assembled in a spindle by restricting the rotation of the stopper with fixing bodies which are inserted in stopper half holes and coupling half holes. CONSTITUTION: A level luffing crane(1) comprises a fixing part(10), a driving part(20), a link part(30), a spindle(40), and a nipper part(50). The fixing part is installed on the ground. The driving part is rotatably coupled to the fixing part. The link part is arranged in the driving part. The spindle is connected to the link part to vary distance. The nipper part is connected to the link part by a wire(60) to grip cargo. A stopper(70) hanging on the link part is arranged at the end of the spindle. |
