| 摘要 |
An apparatus 1, 220 for controlling a load comprises a body 2, at least one energy storage element 3 attached to the body 2, a first elongate flexible element 14, 215 such as wire rope of chain attachable to a suspended load (such as a tender vessel 110 fig. 1a) or a moored vessel (250 fig. 14) or to an element (103 fig 1a) supporting such a load, in which the first elongate element 14, 215 acts upon the energy storage element 3. The first elongate element 14, 215 may form a drag line to stabilise a load against swinging especially when raised by a davit 101 on a mother ship 100 which is pitching, rolling or yawing or it may stabilise a vessel (250 fig. 14) moored to a structure such as an off shore wind turbine tower (200 fig. 10). The energy storage element 3 may be a compressible element in the form of an hydraulic ram 4 coupled to an hydraulic accumulator 43 and a relief valve 41. A carriage 17, 219 may be slidably mounted on rails 32 on the body 2 with the first elongate element 14, 215 attached to one side of the carriage 17 by a pulley 11, 217 and from there to a fixed point 27, 219. A second elongate element 15 may connect the carriage 17 to a fixed point on the body 2 via pulleys 13 on the body 2 and 12 on the piston 5. The elongate element 14 may be wound on a reel (122 fig. 8) which may include a brake whose actuation is controlled by tension in the elongate element 14 to pay out elongate element 14 and avoid damage to the components of the apparatus. |
