| 摘要 |
PURPOSE: A lifting device using a hydraulic cylinder and a method thereof are provided to safely lift a lifted object without applying heavy load to hydraulic cylinders by having short withdrawal distance of piston rods. CONSTITUTION: A lifting device using a hydraulic cylinder comprises first hydraulic cylinders(110), second hydraulic cylinders(120), and support blocks(130). The first and second hydraulic cylinders are vertically installed on the floor to support the underside of a lifted object(A). The first hydraulic cylinders repeat a lifting motion at a predetermined height. The second hydraulic cylinders alternatively repeat the lifting motion same as the first hydraulic cylinders. The support blocks are fitted in empty spaces between the hydraulic cylinders and the underside of the lifted object to support the lifted object.
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