| 摘要 |
PURPOSE: A pick-up crane is provided to be restored in a horizontal state by gliding a gliding unit on the top of a main piece when the pick-up crane is inclined. CONSTITUTION: A pick-up crane comprises a main beam(10), a center beam(20), clamping units(100), and a horizontality detecting unit(200). The main beam is connected to an overhead crane(1). The center beam is connected to the main beam and vertically moves under the main beam. The clamping units are installed in both ends of the main beam and the center beam and clamp a main piece. The horizontality detecting unit comprises a horizontal main body(210), a ball(220), and detecting sensors(230a,230b). |
