| 摘要 |
A fairlead for guiding an anchor chain, intended to equip a ground anchor system for a floating platform, includes a bending structure for guiding a direction change of the associated anchor chain, and a locking structure that includes a grip jaw consisting of two jaws associated with operating elements for rotatably moving the jaws in opposite directions. The operating elements include: (a) an inert mass, referred to as “counterweight”, which is movably coupled to the jaws and which is height-adjustable between a low position and a high position corresponding to an active position and an inactive position of the jaws, respectively, so as to operate and tend to maintain the jaws in the active position, and (b) an actuator driven by control elements, for operating the jaws from the active position to the inactive position and for operating the counterweight from the low position to the high position. |
| 主权项 |
1. A fairlead for guiding an anchor chain (C), intended to equip a system (2) for anchoring a floating platform (P) to the ground (S), wherein said fairlead (1) comprises:
(i) a bending structure (10), for guiding a direction change of said associated anchor chain (C), and (ii) a locking structure (11) which comprises a grip jaw (21) consisted of two jaws (211) articulated around rotation axes (213) parallel to each other, wherein said jaws (211) are associated with means (22) for their operation in rotation in opposite directions, between: an active position, for locking in translation said anchor chain (C) in an upstream to downstream direction, and an inactive position, wherein said jaws (211) are spaced apart so as to allow the translation of the chain (C) within said fairlead (1), characterized in that said operating means (22) comprise: (a) an inert mass (25), referred to as “counterweight”, which is movably coupled to said jaws (211) and which is operable in a height direction between a low position and a high position corresponding to said active position and said inactive position of said jaws (211), respectively, so as to operate and to tend to hold said jaws (211) in said active position, and (b) an actuator mean (26, 35), driven by control means, for operating said jaws (211) from said active position to said inactive position and for operating said counterweight (25) from said low position to said high position. |
