The invention relates to a fairlead for guiding an anchoring element, allowing the anchoring of a unit, such as a floating unit, to an anchoring point, and in particular being applicable to permanent anchoring devices of the submerged fairlead type with an integrated chain stopper, in fields such as
The invention relates to a fairlead for guiding an anchoring element, allowing the anchoring of a unit, such as a floating unit, to an anchoring point, and in particular being applicable to permanent anchoring devices of the submerged fairlead type with an integrated chain stopper, in fields such as the marine, offshore, and renewable marine energy industries. The fairlead comprises guide means 1 to 4 able to guide the translation of the anchoring element between the unit and the anchoring point, and blocking means 5 able to block the translation of the anchoring element in the guide means 1 to 4. The blocking means 5 are mounted on the guide means 1 to 4 at least partially freely rotating around an axis parallel to the longitudinal axis of the anchoring element when the latter is guided in the guide means 1 to 4.
대표청구항▼
1. A fairlead for guiding an anchor line having a longitudinal axis and allowing the anchoring of a unit to an anchoring point, said fairlead comprising a guider able to guide a translation of the anchor line between the unit and the anchoring point, and a lock able to block the translation of the a
1. A fairlead for guiding an anchor line having a longitudinal axis and allowing the anchoring of a unit to an anchoring point, said fairlead comprising a guider able to guide a translation of the anchor line between the unit and the anchoring point, and a lock able to block the translation of the anchor line in the guider along a local longitudinal axis of the anchor line where the lock acts on the anchor line, wherein the lock is mounted on the guider at least partially freely rotatable with respect to the guider around an axis parallel to the local longitudinal axis of the anchor line when the anchor line is guided in the guider. 2. A fairlead for guiding an anchor line having a longitudinal axis and allowing the anchoring of a unit to an anchoring point, said fairlead comprising a guider able to guide a translation of the anchor line between the unit and the anchoring point, and a lock able to block the translation of the anchor line in the guider along a local longitudinal axis of the anchor line where the lock acts on the anchor line, wherein the lock is mounted on the guider at least partially freely rotatable with respect to the guider around an axis parallel to the local longitudinal axis of the anchor line when the latter is guided in the guider, andwherein the guider comprises a bearing ring and a first rotation limiter, and wherein the lock-comprises a pivotable support mounted against the bearing ring and a second rotation limiter able to cooperate with the first rotation limiter to limit the rotation of the lock. 3. The fairlead according to claim 2, wherein the first rotation limiter comprises at least one circular groove forming at least one arc of a circle centered on the rotation axis of the lock, and wherein the second rotation limiter comprises at least one element able to be guided in the circular groove. 4. The fairlead according to claim 2, wherein the lock comprises at least one pivotable block of the gate type mounted on the support between a first blocking position in which the at least one pivotable block is able to block the anchor line from translating in the guider, and a second position without blocking in which the at least one pivotable block permits the anchor line to freely translate in the guider. 5. The fairlead according to claim 4, wherein the at least one block is provided with a mechanical, hydraulic or electric actuator, said actuator, allowing the passage of the at least one block from the blocking position to the position without blocking, and vice versa. 6. The fairlead according to claim 5, wherein the actuator comprises at least one jack wherein one end is connected to the support and the other end is connected to the at least one pivotable block, such that the deployment of the actuator drives the pivoting of the at least one pivotable block from the blocking position toward the position without blocking. 7. The fairlead according to claim 5, wherein the actuator comprises at least one cable fixed on the at least one pivotable block such that traction on the cable drives the pivoting of the at least one pivotable block from the blocking position toward the position without blocking. 8. The fairlead according to claim 1 wherein the guider comprises a first guide assembly configured to guide the anchor line in a first direction, the first guide assembly comprising a fastening interface configured to allow the fairlead to be fastened to the unit, and a second guide, the second guide being pivotably mounted relative to the first guide assembly around an axis and configured to guide the anchor line in a second direction in a nonzero angle relative to the first direction, and wherein the lock is mounted on the second guide. 9. The fairlead according to claim 8, wherein the first guide assembly comprises a guide support rotatably mounted relative to the fastening interface, the guide support being mounted around an axis parallel to the first direction, and a guide defining at least part of a passage for the anchor line. 10. The fairlead according to claim 9, wherein a pivot axis of the second guide relative to a pivot axis the first guide assembly is formed in a first part of the guide and substantially opposite the lock. 11. The fairlead according to claim 8 wherein the guider comprises a transitioner configured to guide the anchor line at the transition between the first and second guide directions. 12. The fairlead according to claim 11, wherein the transitioner comprises a guider wheel rotatably mounted around an axis formed in a second part of the guider. 13. The fairlead according to claim 8 wherein the guider comprises a guide cone configured to facilitate entry of the anchor line in the second guide. 14. The fairlead according to claim 1, wherein the unit is a floating unit. 15. The fairlead according to claim 7, wherein the at least one cable is fixed on the at least one pivotable block with a ring.
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이 특허에 인용된 특허 (12)
Longberg Leif (Landas NOX) Pedersen Hakon S. (Hop NOX), Assembly on a chain sheave/chain-rope system.
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