| 摘要 |
The lifting device (5) has a holding device (11,12), which is connected with a ceiling (2) of a building. A support element for supporting a bus bar (3) with a traction element (55) is activated by a drive device (51). A headpiece (53) is provided, which is connected with a fixing device (1) and has deflection rollers (5321, 5322), over which the traction element is deflected. An auxiliary device (52), which is connected with the drive device, is provided, by which the force (F1) acting on the drive device during the lifting of the bus bar by the traction element is compensated. |
