| 摘要 |
The invention relates to a bottom hook block system for a given maximum load, for providing differently portative bottom hook blocks for a crane, especially for a heavy lift crane. The bottom hook block system comprises four individual roller blocks ( 1 a-d) with a plurality of pulley blocks, two load hooks ( 2 a, b) and two intermediate links ( 3 a, b) by means of which two individual roller blocks ( 1 a, b or 1 c, d) can be combined to a double roller block ( 4 ). An equalizing link unit ( 5 ) consists of two equalizing links ( 6, 7 ) that are interlinked via a joint support ( 8 ) with a vertical and at least one horizontal rotational axis. One of the equalizing links ( 6 ) is linked via a first horizontal hinge ( 10 a, b) with the two intermediate links ( 3 a, b). The other equalizing link ( 7 ) is linked via at least one bearing block ( 11 a, b) with a second horizontal hinge ( 12 a, b) with the two load hooks ( 2 a, b). The load hooks ( 2 a, b) can be swiveled about a vertical rotational axis in the respective bearing block ( 11 a, b). A bearing connection ( 13 ) is provided in at least one of the intermediate links ( 3 a, b), the connecting dimensions corresponding to the second horizontal hinge ( 12 a, b).
|
