| 摘要 |
A fastening mechanism (104) for an apparatus intended for use in liquid comprises two connecting parts (120, 122) for a cylinder structure (100) that are positioned on different sides of the centre of gravity (82) of the cylinder structure (100) in the direction of the longitudinal axis (80) of the cylinder structure (100) and alternately connect to the cylinder structure (100). The fastening mechanism (104) connects to a support structure (90) of the cylinder structure (100). A piston mechanism (106) is shorter than the cylinder structure (100) and comprises two pistons (108, 110) connected to each other, located at the ends of the cylinder structure (100) and prevent liquid (150) from entering the space (136) between the pistons (108, 110). The cylinder structure (100) rotates or rocks on the support structure (90). When one connecting part (120, 122) is at a predefined stage higher than the other connecting part (120, 122), the higher connecting part (120, 122) is connected to the cylinder structure (100) and the other connecting part (120, 122) is disconnected. The pistons (110, 100) move in parallel inside the cylinder structure (100) in the direction of the longitudinal axis (80) of the cylinder structure (100) synchronously with the connection of the connecting parts (120, 122). |
