| 摘要 |
A lifting cylinder unit (1) has a plunger design, and includes a stationary rod tube (2) having a longitudinal axis (3), two axial end regions, and an outer surface (26). A rod head (4) is arranged in one of the axial end regions of the rod tube (2), the rod head (4) being fixedly connected to the rod tube (2) and including a connecting bore (7). A cylinder tube (14) having two axial end regions and an outer surface (22) is arranged outside the rod tube (2). The cylinder tube (14) is designed and arranged to be movable with respect to the rod tube (2) in the direction of the longitudinal axis (3) of the rod tube (2). A cylinder bottom (15) is arranged in one of the axial end regions of the cylinder tube (14), and is fixedly connected to the cylinder tube (14). A guide bush (18) having an inner surface (23) and including a surface (30) for the application of a force is fixedly connected to the outer surface (26) of the cylinder tube (2). A pressure chamber (31) is arranged inside the rod tube (2), and is designed and arranged to be supplied with a hydraulic medium via the connecting bore (7). A dynamic seal (24) is arranged in the region of the inner surface (23) of the guide bush (18), and is designed and arranged to seal the pressure chamber (31). A running surface (25) is arranged in the region of the outer surface (23) of the rod tube (2), and is designed and arranged to contact the dynamic seal (24).
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