| 摘要 |
1. A lift assembly comprising: (a) a frame (20); (b) a drum (160) rotatably connected to the frame (20) about an axis of rotation and having a plurality of winding sections; a drive mechanism (120) connected to the drum (160) for rotating the drum and translating the drum along the axis of rotation, the drive mechanism including a motor (110) and a gear box (120)
characterized in that a load break (130) is mechanically intermediate the drum (160) and the gear box (120). |
