| 摘要 |
PURPOSE: A lifting device is provided to achieve displacement of a bar and lifting of target objects connected to the bar by repetitively gripping the bar with a fixing part and displacing the fixing part by a cylinder. CONSTITUTION: A lifting device comprises a bar(L), an upper fixing part(10), a cylinder(30), and a lower fixing part(50). The bar is connected to an object. The upper fixing part fixes the bar to maintain the position of the bar. The cylinder supports the upper fixing part and changes the position of the fixing part. The lower fixing part is arranged under the cylinder and fixes the bar to maintain the position of the bar. The cylinder has a piston(32). According to the displacement of the piston, the positions of the upper fixing part, the bar, and the object connected to the bar are displaced. The piston is displaced in a state where the lower fixing part and the bar are connected, and the position of the bar maintained by the fixing part is released. The position of the object connected to the bar is displaced as the piston displaces the position of the fixing part in a state where the position of the bar maintained by the lower fixing part is released, and the upper fixing part and the bar are connected. |
