| 摘要 |
PURPOSE: A device for maintaining the balance of a crane is provided to prevent the movement of a ship from becoming transferred to an upper crane since double driving cylinders using high-pressure nitrogen and fluid pressure are installed on the wheels of the upper part of a crane. CONSTITUTION: A device for maintaining the balance of a crane comprises wheels(18), double driving cylinders(16a,16b), and double driving modules(10a,10b). The wheels support and move a crane on a floating member. The double driving cylinders connect the wheels to the body of the crane. The double driving cylinders make a double piston movement so that the movement of the floating member is not directly transferred to the body of the crane. The double driving modules supply oil and gas to the double driving cylinders and control crane to maintain balance through the double piston movement of the double driving cylinders. The double driving cylinders comprise an upper area and a lower area. |
