| 摘要 |
The within invention relates to a crane with a boom slewable in a vertical pivoting plane and a bracing boom arrangement, particularly a derrick boom arrangement in which a luffing cable is arranged between the boom and the bracing boom arrangement, in which the luffing cable has at least two guying cables that run from two guying points arranged on the opposite side of the pivoting plane, which cables belong to the bracing cable arrangement, to the boom, in which the two guying cables are each movable by means of a winch and in which a mechanical coupling is provided between the two winches by means of which the movement of the two winches can be force coupled. |
| 主权项 |
1. A crane having
a superstructure, a boom (10) directly hinged to the superstructure about a pivot axis (100) in a luffable manner in a vertical pivoting plane (15), a bracing boom arrangement (11) directly hinged to the superstructure about a separate pivot axis (25), and cabling running between the boom (10) and the bracing boom arrangement (1) and arranged to lull the boom (10), wherein the cabling has at least two guying cables (1, 1′) running to the boom (10) over two guying points (50, 50′) of the bracing boom arrangement (11) on opposite sides of the pivoting plane (15), the bracing boom arrangement (11) is pivotable around the separate pivot axis (25) standing perpendicular to the pivoting plane (15) of the boom (10) and has a rigid cross-connection (23) between the two guying points (50, 50′), the bracing boom arrangement (11) comprises first and second booty supports (20, 20′) arranged in combination with the cross-connection (23) to provide a V-shaped structure on an articulation component (21) forming an apex at one end thereof and with the rigid cross-connection (23) spaced away from the articulation component (21) and extending perpendicular to the pivoting plane (15), such that the bracing boom arrangement (11) has a triangular structure defined by the boom supports (20, 20′) and the rigid cross-connection (23) forming bases of such triangular structure, and the at least two guying cables (1, 1′) are mounted to the bracing boom arrangement (11) at the two guying points (50, 50′), by return pulleys (30, 30′; 31, 31′) hinged to the bracing boom arrangement (11) in a rotatable manner around two axes. |
