| 摘要 |
The invention relates to a camera carriage with a vertical lifting column for vertical adjustment of a camera. The column is telescopically extending and has a bottom outer part 10, a middle part 11 and an upper inner part 12. To allow frequent extending of the lifting column, the drive arrangement comprises a reversible electric motor 17 connected to the outer column part 10 for driving at least one endless chain 23, 24 which is guided parallel to the column axis over two end guide wheels 21, 22, 25, 26 between the intermediate and outer column parts 10, 11 and to one run of which the intermediate column part 11 is secured. To move the upper column part 12 there is at least one endless rope 43, 44 within the column parallel to its axis and which is guided over a pair of guide wheels 39, 40, 41, 42 on at least one wheel support 35, 36 extending into the column interior and connected to the intermediate column part 11. One run of the rope 43, 44 is connected to the upper, inner, column part 12 and the other run is connected to the upper end of a clamping bar 53, 54 secured on the bottom, outer, column part 10 and extending into the upper column part 12. <IMAGE> |
