| 摘要 |
PURPOSE: A horizontal placard cradling device using a rotational roller and a wire rope is provided to automatically locate a placard in the center part of a holder by moving a moving clamp which fixes the placard to be bilaterally symmetrical. CONSTITUTION: A mainframe(100) is connected to the ceiling of a stage to be elevated and is extended in a horizontal direction. A rotation roller(200) is combined with the right and left side end points of the mainframe, respectively. A wire rope(300) enables an upper part section and a lower part section to linearly move in an opposite direction with the rotation of the rotation roller. A moving clamp(400) leaves a placard and is selectively combined with the upper section or lower section of the wire rope. The moving clamp moves in a different direction according to the movement of the wire rope. A fixing clamp(500) is combined with the center part of the main frame to be fixed. |
