| 摘要 |
The drive unit (7) has cylinder portion (22) that is sealed against displacer (19), and contains displacement rod (17) and piston rod (16). A flow chamber (A) is provided between displacement rod, piston rod, and outer cylinder (25). A large pressure chamber (B) is provided between closing element (18), guide sleeve (24), outer cylinder, displacement rod, and piston rod. A small pressure chamber (C) is provided between cylinder portion, displacer, and valve unit (8). The flow chamber is directly connected to the pressure chambers via control valve and check valve. |
